Binding compositions with carboxymethylcellulose (cmc) thickening system

FIELD: chemistry.

SUBSTANCE: ready-for-use composition of drying-type binding mix includes binding substance, thickening system, filler, water and biocide, with thickening system containing non-linked sodium carboxymethylcellulose (CMC) with bottom limit of degree of substitution (DS) of 0.76 and bottom limit of polymerisation degree (DP) of 1000 at amount of 0.01 to 0.6 wt % of the total composition weight. CMC with degree of carboxymethyl substitution (DCMS) over or equal to 0.76, optionally together with non-ionogenic thickening agent, or CMC with DCMS under 0.75 is used as modifier of rheological properties and partial clay substitute in binding compositions.

EFFECT: elimination of most negative properties of clay in binding substance.

38 cl, 3 tbl

 

The technical field to which the invention relates.

The present invention relates to compositions that can be used as a connective sealing materials in the construction materials industry. Thus, in particular, the present invention relates to the use of carboxymethylcellulose (CMC) with a high degree carboxymethylthio substitution (SKMZ) and to the use of reduced amounts of clay to improve the connecting tracks.

Background of invention

In large panels that are nailed, fix screws or paste on the upright walls of buildings, usually located cladding sheet. Joints where sections of the cladding sheet are connected back to back, cover the connecting part, and then inside the connective close up of a mixture of fiberglass or reinforced paper tape, and then allowed to dry. When connecting the mixture dries on top of this mixture impose the second coupling mixture and allow it to dry. Coverage from the coupling mixture is applied also over the heads of nails or screws or any cracks in the cladding sheet and allow to dry. After connecting the mixture dries, the articulation and the floor on top of the nails or screws lightly sanded with sandpaper and then finish a wall decorin is the missing material, such as paint.

The connecting structure, which is generally referred to as connective mixtures usually contain a binder, spustitelny system, filler, water, biocide, clay and mica. This connecting structure is a ready-to-use composition of the drying type, which is usually sold in five-gallon cans or boxes made of corrugated cardboard. Water and filler are the components in the connection part has the highest mass percentage. Connecting mixtures are either substances normal specific gravity, which belongs to the traditional type, or a lightweight substance. Connecting a mixture of normal specific gravity have a specific gravity of from about 13 to 14 pounds per gallon (lb/Gal) (of 1.55 to 1.65 g/CC), while the lightweight connective mixture have a weight of about 8 to 10 pounds/gallon (from 0.9 to 1.2 g/CC). Lightweight connecting the mixture becomes a composition, which is more significant demand in the industry.

Although the clay to regulate the rheological properties of connective mixtures choose attapulgite, he attaches the connecting part of many undesirable properties. Attapulgite (1) is a key factor causing instability rheological its the TV and the viscosity of the coupling mixture during aging, (2) may cause cracking during drying, (3) able to give the connecting part mealy, grainy structure requiring re-alignment to achieve on the wall smooth surface (4) is a natural product, due to the natural variability requires the consumer or standardization from batch to batch, or continuous changes of water demand and the quantity used clay, (5) causes the variability in the degree of shrinkage during drying, mainly when it is necessary to change the quantities used due to variability from batch to batch, and (6) may cause unwanted variation in staining connective mixture. However, attapulgite, usually used in the range from 1.5 to 3.5 wt.%.

The use of CMC in connection mixtures inherent dignity. She not picks up/traps air, therefore, pozdraviteli after polishing does not give rise to problems. CMC, as a rule, does not report sufficient smoothness of the connective substance. However, this occurs when the number of attapulgite reduce.

Although CMC currently use in connecting the compositions as a substitute for clay and/or mica, its adaptation to the coupling mixture is fraught with problems of a technological nature, mainly due to the presence of the Oia low molecular weight cations, such as Mg++, Al+++and CA++that are present. Even in relatively low concentrations, these cationic materials can form with CMC complex, leading to gelatinization by making connective mixture undesirable rheological properties. Studies have found the way how to do so in certain circumstances special CMC products showed acceptable performance properties.

In the US 3891582 described connecting structure for sealing the cladding sheet containing a resinous binder, limestone, clay, mica, lubricant, stabilizer and thickener, which is mixed with water to form a sealing putty, which, as a rule, are in alignment. As a substitute of asbestos use water-insoluble fibrous CMC.

In the US 5336318 described do not contain clay connective mix, prepared with typical, suitable for industry thickeners in combination with the associative thickener. This composition can not be used when using dolomite limestone.

In the US 5382287 described the use superabsorbent CMC with a degree carboxymethylthio substitution (SKMZ) in the range from 0.35 to 0.75, and a degree of polymerization (SP) in the range of 200 to 4000, so that the structure of the connective mixture, it served as a call is that the swelling agent and could replace the clay and/or mica, when it is used in quantities of from 0.01 to 0.5 wt.%.

In the US 5512616 described the structure of the connective mixture, which is used laboriously kieselguhr HP. Specifically says that rederivation diatomaceous earth can not be used. About reduced quantities of clay no reference is not given. When performing the present invention rederivation diatomaceous earth is used when the number of attapulgite reduced to concentrations far below the accepted normal practice, for example up to a level of from 0.25 to 0.75% (a"typical" is a concentration of from 1.5 to 2.5%).

The essence of the present invention in the literature devoted to the art, are not described. However, despite the fact that it was known from the literature, devoted to the art, there is still a need for a simple means of making the connection mixtures.

Summary of the invention

The present invention relates to ready-to-use composition of the connective drying the mixture comprising a binder, spustitelny system, filler, water and biocide, spustitelny system which includes unstitched the sodium carboxymethyl cellulose (CMC) with the lower limit of the degree of substitution (Sz) 0,76 and the lower limit of the degree of polymerization (CP) 1000 and is contained in an amount of from 0.01 to 0.6 wt.% is calculated on the total weight of the composition. In the proposed composition of the clay and mica may contain small amounts, if kept at all. In other words, clay and mica are optional, and can contain from zero percent to 0.75 wt.%.

Detailed description of the invention

It was found that attapulgite can be used in ready-to-use drying-type connection structures with CMC with SKMZ at least 0,76, if the amount of clay kept at or less than 0.5 wt.% in the connective substance normal specific gravity and 0.75 wt.% lightweight connective substance. Before the creation of the present invention, the clay had a negative impact on the stability of the viscosity of this substance, especially at high temperatures, i.e. above about 100°F, and the exact temperature is a function of the type of connective mixtures, types of raw materials and proportions. Moreover attapulgite also affects the resistance of the connecting mixtures drying type cracking. Therefore, the objective is to substantially reduce or remove attapulgite from the coupling mixtures of these types in order to eliminate such disadvantages of clay.

In accordance with the present invention the compositions of the connective drying the mixture type according to the present invention contain a binder, shasti the compulsory system, filler, water, biocide, clay (object above restrictions) and optional mica. Other components that are usually used in connection mixtures, are preservatives, wetting agents, defoamers and plasticizers. These additional components typically used in small amounts, usually in the range of from about 0.05 to about 1.0% based on the total dry weight of the composition.

Binder

Commonly used binder in ready-to-use drying-type compounds connecting mixtures represent the latex emulsion, such as latex, polyvinyl alcohol, ethylenevinylacetate or polyvinyl acetate latex, which are acidic. The resinous binder is coalescers additive, which during the drying of such cement forms a liquid matrix that holds the clay, mica, limestone, and in this case the CMC. In other words, the binder is a matrix that holds the other components in their own areas so that the result is a target product. Therefore, the binding substance in the connective material is a significant component. Other materials that can be used as binders include starch, casein, p is Lucille and copolymers of acrylamide and acrylic acid. Generally, the amount of latex binder is in the range from a lower limit of about 1% to an upper limit of about 3%, preferably about 2.5 wt.%, in terms of the total weight of the composition.

Spustitelny system

Shutteling system according to the present invention can serve only sodium carboxymethyl cellulose (CMC), which has certain characteristics or spustitelny system can include a mixture of other modifiers rheological properties with CMC. In the connecting structures as a rheology modifier, and a partial or complete substitute for attapulgite you can use the CMC presented in the present description, in combination with either nonionic shared thickener/rheology modifiers, such as MGPC and diatomaceous earth, or other or in combination with other CMC products not covered by the scope of the present invention. This reduction/elimination clay eliminates the negative characteristics associated with the use of clay, while maintaining a positive rheological properties, typically, attached to clay and its interactions with other minerals and water-soluble polymers. Can be significantly reduced amount of mica, one of the functions which consists of the FR is sostoyanii negative aspects of clay (for example, cracking). (Lightweight connecting mixtures of mica do not normally use, but it is a normal component in the products of normal specific gravity).

CMC of the present invention should have a lower limit SKMZ 0,76, preferably 0.78, and an upper limit of 1.5, preferably 1,2. This CMC should also have a lower limit of the degree of polymerization (CP) 5000, preferably 6000, and the upper limit of 25000, preferably 20000.

Other rheology modifiers that can be used in combination with CMC of the present invention, are, for example, metilgidroxiatilzelllozu (AGEC), hydroxyethyl cellulose (SCE), hydrophobically modified hydroxyethyl cellulose, hypromellose (HPMC), methylhydroxyethylcellulose (MHEC), hydroxypropyltrimonium diatomaceous earth and rederivation diatomaceous earth.

The number shutteling system in the structure of the connective mixture may be in the range from a lower limit of about 0.01 wt.%, preferably 0.3 wt.%, in terms of total dry weight of the connecting components of the mixture (excluding water contained in the structure of the connective mixture). The upper limit shutteling system is approximately 0.6 wt.%.

Fillers

Fillers are an important component in the coupling mixture. They serve to unite the nutrient substance objectives an incremental basis, determining the effectiveness of this substance, and regulate the pH of the composition. Conventional fillers that can be used when performing the present invention either alone or in combination, include calcium carbonate, the dihydrate of calcium sulfate (gypsum) and dolomitic limestone. With the aim of improving the regulatory setting time and cracking, and other properties of the connective mixture in the presence of other fillers as a small component, you can use the hemihydrate of calcium sulfate (gypsum plaster).

The preferred filler is powdered calcium carbonate. This filler is a dry powder, which is typically at least about 45 wt.%, preferably 50 wt.%, in terms of the mass structure of the connective mixture, and typically is in the range from about 45 to an upper limit of about 65 wt.%. In order to achieve the target pH of the composition is from 8 to 10 in the filler used main alkaline component, and therefore, it represents the main component that regulates pH. If for any reason, the filler may not provide adequate regulation of the pH, if necessary, to increase the alkalinity of the composition may be added a pH modifier.

Water

To achieve wascott the structure of the connective mixture is usually in the range of from about 300 to about 700 units Brabender to the dry components of the coupling mixture is added water. When the plot mix the dry ingredients, the amount of water added for the preparation of ready-to-use connection moistened mixture or connective mixture, usually depends on the target viscosity.

Biocide

The biocide is an important component of the compositions of the connective mixture. It increases durability during storage and protects the structure from damage. In other words, biocides to prevent the growth of microorganisms such as mold, bacteria and fungi, in the composition, as well as on the walls of the building structure in which it is used. Examples of two effective conventional industrial biocides are:

product Troysan® 174, (2-[(hydroxymethyl)amino]ethanol), a broad-spectrum biocide supplied to the market by the firm Troy Chemical Corp., and

product Proxel® GXL, (1,2-benzisothiazolin-3-one), biocide universal actions supplied to the market by the company ICI Americas.

This biocide usually must be contained in a quantity in the range from a lower limit of about 0.05 to upper limit of about 1.0 wt.% in terms of the total weight of components.

Clay and/or mica

In accordance with the present invention are acceptable for use in connecting the substance of clay represent any environment natural mineral subtly ismel the Chennai, largely crystalline substances from aqueous silicates, usually containing alkaline, alkaline earth metals and iron that make up the group of clay materials. This group includes thick, montmorillonite, bentonite, illite, kaolin and attapulgite. The preferred clay is attapulgite. Attapulgite typically used in concentrations in the range of from 1.5 to 3.5% of the total mass of connective mixture.

When creating the present invention, it was found that the positive effects of clay outweigh the negative effects when it is used in small quantities equal to or less than about 1.0 wt.%, preferably less than about 0.75 wt.%, and more preferably less than 0.5 wt.%, in terms of the total weight of the composition. It should also be noted that the lower limit of the amount of clay in the implementation of the present invention is equal to zero. These intervals cover products all masses, such as light and heavy substances, and they vary based on the target characteristics of the particular substance. Advantages of clay, which, as a rule, use described above in the section "Background of invention". Depending on the variables of composition, the complete elimination of the clay may (but not always, as will be shown in the example in the present description examples) lead to the education connective mixture with a weak consistency of the material, which is difficult to jam and to achieve a uniform thickness of the connective mix with the grout. If clay is used in low concentrations, is shown directly above, in combination with CMC, this potential lack of resolve, and additional positive effects of smaller cracking, more homogeneous and less shrinkage achieved when the clay contains used in smaller quantities, are stored.

Diverse components

If you want a lightweight connective mix drying-type, having improved resistance to cracking, lightweight property can be ensured by the introduction of the specially treated expanded perlite. In the art it is well known that foamed perlite should have particle sizes that pass through a sieve with a mesh size of 100 mesh, if it shall be entered in the coupling mixture. Expanded perlite is a very lightweight material, which contains many fine cracks and crevices that may be permeable to water and would therefore be deprived of its ability to give connective mixture of lightness. The result of expanded perlite are often treated in order to make it insensitive to water. The preferred method is the processing of foamed perlite silicone compound, but to give him insensitivity to water can be used and other materials. Specially treated expanded perlite commercially available from such suppliers as the company Silbrico Corporation. If you use raw perlite, take precautions in order to prevent unwanted absorption of water during preparation and during the intended durability of the connection of the mixture during storage. Examples of lightweight products that are illustrated in the present description, include prepared with the use of the product SilCell® 3534 company Silbrico, perlite with a machined surface, which is usually used in industry. Perlite can be used in quantities, the upper limit of which is about 8.5 wt.%, preferably 6.0 wt.%.

Depending on local preferences, the structure of the connective mixture can be used by other components. These include, though not limited to, retaining the air agents, surfactants, moisturizers, buffer salts, pH, defoamers and mixtures thereof.

The present invention has many advantages over known in the art technical solutions. It is not based on superabsorbent CMC limited solubility and extremely thixotropic behavior in water is the ed. Therefore, the present invention has the advantage described in US 5382287 that CMC product easier to use, it does not require the implementation of special stages of preparation connective mixture, which may not be available for all producers and consumers of modern technology. In addition, modern technology allows the use of thickeners in lower concentrations than those required when implementing the technology on US 5382287. Also evident assumption that higher SKMZ in excess of 0.75 may be more efficient, which also features modern technology described in the patent 5382287. This is surprising because the higher SKMZ, the higher the probability of reaction between the ionized carboxyl groups of CMC and cationic materials, as a rule, included in the coupling mixture.

Connective mixture, as a rule, can be prepared by combining all wet components and mixing for one minute for homogenization. Next, in a mixing tank with continued mixing add the mixture of all solid materials. The whole mass is stirred in General for up to 20 minutes Different manufacturers can modify this process. In General the higher the concentration of the clay, the more necessary is imoe mixing time. Consequently, the use of low concentrations of clay, as set forth in the present description, in many cases creates the opportunity to reduce the above-mentioned blending with the increase in the overall performance of the installation.

When performing the present invention can be used with CMC SKMZ>0.75 and above the limits of Mw and SP. As thickeners in the connective substance either on its own or shared thickener, and the second thickener is selected CMC, which does not meet the requirements according to the present invention and which cannot be used as the sole thickener in the connective substance that can be used all the products CMC 7H4XF, H-58-3 and H-76-2 company Aqualon, whose properties are given in the present description, product Cekol®100,000 firms Noviant and product Walocel® 40000 firm Wolff, also presented in the present description, or hydroxyethylcellulose, hydrophobically modified hydroxyethylcellulose, hydroxypropyltrimonium kieselguhr, methylhydroxypropylcellulose, rederivation diatomaceous earth, other thickeners, well known to experts in the art, or combinations thereof. If to give the connection a mixture of the required rheological properties should be used attapulgite, t is usually determine the choice of shared thickener and the ratio between the two (or more) thickeners. For example, when a thickener is used in an amount of 0.6%, the use of 7 frequent. noderivatives diatomaceous earth with 3 frequent. product Cekol®100,000 gives the ability to completely eliminate attapulgite. If a mixture of thickeners is a diatomaceous earth product H-76-2 company Aqualon also commonly used in the amount of 0.6% and the mass ratio of 7/3, attapulgite component can also be eliminated. It shows that you can use different products, one with SKMZ 0,76 and SP 9800, the other with SKMZ 0.92 and SP 20000. However, if CMC component is the product of the company Aqualon with the same SP, but lower SKMZ (0,62), in combination with diatomaceous earth in the same ratio, the coupling mixture is noticeably weaker, also gel with the character, which would make alignment very difficult because the coupling mixture leaving would be in a lump. Therefore, it has been found that a lower value SKMZ, 0,62 is unacceptable. Three-component mixture is used in an amount of 0.6%, including a 3.5 frequent. CMC 7H4XF+1,5 frequent. product Cekol 100,000+5,0 frequent. diatomaceous earth enables to reduce the number of attapulgite to less than 0.25%, with the exact optimal level is still not defined (it is limiting, level >0%). Typical used amount of the thickener in the product is the usual specific gravity ranges from 0.4 to 0.5% of the total mass of connective mixture. The work on determining the minimum quantities thickeners, which constitute the object of the present invention. Previous work using either crosslinked, partially insoluble or thixotropic CMC and other standard thickeners (but without soluble CMC and without shared thickener, such as diatomaceous earth) showed that, apparently, such low concentrations as from 0.45 to 0.5%. Due to the nature of diatomaceous product can be assumed that in the connective substance normal specific gravity is possible, apparently, such low total concentration of thickeners, as at least from 0.45 to 0.5%, and lightweight products possible so low as 0.4 percent.

Examples

The following examples illustrate the implementation of the invention, which can find industrial application in the construction industry. In all cases, unless otherwise stated, parts and percentages are mass. The viscosity was determined in units of Brabender (unit B), it was established under ASTM C-474-67. Adhesion was also determined under ASTM C-474-67. Cracking and rabito was determined on horizontal panels through the air, that run through the panel by means of 14-inch vibrating fan for 45 min, and then gave them to dry during the night, using the numeric evaluation: from OUTSTA (10), traces (9), very weak (8), weak (7), moderate (6)moderate/severe (5) or strong (4). Immediately below are also methods for the preparation of connective mixtures, methods of analysis SKMZ and SP.

Standard technology of preparation connecting mixtures

To prepare the coupling mixtures whose properties are presented in the present description, used with the components shown below in table 1. These homogeneous components were mixed using a standard mixer Hobart or planetary mixers Kitchen Aid. Connective mixture was prepared in a 1000-gram quantities, including water. All liquid components were added to a mixing tank and stirred for 20 to 30 seconds Pre-mix all dry ingredients were prepared by otoshiana required quantities of each component in a container of sufficient volume so that the components could briefly shake to shuffle. These dry ingredients were loaded into a mixing tank, already included in the position corresponding to the lowest speed. Add all of the solid components was performed within a 15-second time period. The mixture was stirred for two minutes, and during this time he formed a cohesive paste. Mixing was stopped in order to scrape off the material with side zip pocket wit the walls of the mixing tank and the internal mixing blades and return in the bulk paste. Then the mixing was resumed for 8 min, after which the newly produced Sobrevivencia. To ensure complete wetting and uniform distribution of all components required final 5 minutes of mixing. After that, the coupling mixture was covered and gave "cool" within 16 to 24 hours after this time, after the weak mixing manually determined viscosity, which are presented in tables 2 and 3. If necessary, the viscosity of the coupling mixture was lowered to the level of from 400 to 425 units of B and then adding small amounts of water, typically less than 3 wt.% from the total mass of connective mixture. Next were tested connecting mixtures.

Definition SKMZ CMC products

CMC product was dissolved in water and hydrolyzed in 2-molar triperoxonane acid (TFA). Then, the solution of CMC/TFA was purged with argon and then covered with a tube for 8 h were placed in a heating block at 120°C. After this gidralizovanny CMC was dried using a stream of nitrogen. This material is designated as CMC monosaccharide mixture. To establish SKMZ it analyzed for carboxymethyl substitution by standard methods liquid chromatography.

The determination of the degree of polymerization of CMC products

The relative molecular weight CMC was initially identified alprostadil chromatographic split the m polymer in water mobile phase, including dilute lithium acetate at pH 8.5. The calibration Mw was performed using polietilenoksidnoy and polietilenglikolya (PEO/PEG) standards with a narrow distribution. The analysis was quantitative, Mw values were not absolute, but relative to the calibration PEO/PEG. Thus, the desired srednevekovoy molecular weight (Mw) expressed in units of Dalton PEO. This method was applied in relation to CMC.

Protocol analysis

By dissolving 4-unsieved vessels 6 mg of solid CMC in 320 ml of deionized water and stirring for night prepared solutions of CMC. To the solution was added 30 ml of mobile phase double strength, then all was stirred for another hour. These solutions were filtered and analyzed by gel chromatography (GPC). The main detector served differential Refractometer Hewlett-Packard 1047A. The implementation of this particular method for the determination of molecular masses were given the opportunity to install srednevekovoy molecular weight (Mw). The degree of polymerization was obtained from this value, Mw, divided by the molecular weight of the glucose residue of the same Deputy. Therefore, the JV was srednevekovoy degree of polymerization (SPw), which for simplicity in the present description is the designation SP.

Examples of operational properties connecting the mixtures

The specific formulations of connective mixture used to illustrate the scope of the present invention, are presented in table 1. The traditional connection of a mixture of "normal specific gravity" ("heavy") have densities in the range from 12 to 15 pounds per gallon (lb/Gal), while the lightweight connecting mixtures have densities in the range from 7 to 11 pounds per gallon. To illustrate the usefulness of CMC as an active agent in connection mixtures and determine the limits of such utility CMC provides 21 example. In all cases, if the footnotes to the above in the present description tables not specified, you can assume that all coupling mixture showed good initial properties, being easily Semiramida and align on the cladding sheet. In the short-term aging, some were changed, as specified when it was appropriate.

TABLE 1
The specific formulations of the connecting mixtures
ComponentThe amount (quantity), discussed in the present"Typical" used numberThe amount (quantity), discussed in the present"obecnie" used number
descriptiondescription
Normal specific gravityNormal specific gravityLightweightLightweight
Water30-31%30-31%39-41%38-42%
Crushed caso362-64%62-64%49-51%49-51%
Attapulgite0-0,5%5-8%0-0,75%1,5-3,2%
Mica1,5%5-8%--
Biocide0,1%0,1%0,1%0,1%
Latex PVA2,5%2,5%2,5%2-3%
The thickenerof 0.4-0.6%0,4-0,5%0,5-0,6%0,5-0,6%
Perlite6%5-8%

Examples 1 through 9 - Connection of a mixture of normal specific gravity

The following table 2 presents the specific components of these examples and the test results on the viscosity (unit B), cracking, rabito, structure and adhesion.

TABLE 2
Specific compositions of the universal coupling of mixtures of normal specific gravity
Approx. No.Clay, %Mica, %Kieselguhr, %MGPC, %CMC, %Type CMCEd. BCrackingRabinaStructureAdhesion
12,05,000,40-60067One.99%
22,05,00,430,177H4XF76066SP.70%
2A2,05,00,350,157H4XF60077SP.65%
2B2,05,00,290,117H4XF49077SLR.65%
30,251,50,430,177H4XF/td> 55099One.99%
40,251,50,30,3H-76-247589One.95%
50,251,50,30,3H-58-355088One.97%
60,251,50,250,25H-58-349098One.90%
701,50,430,17Cecol 100,00058099One.95%
7A000,430,17Cecol 100,00058089One.95%
801,50,6H-58-3 and 7H4XF53089+One.85%
8A2,01,50,6As in approx. 8560----
90,3751,50.30,3Walocel 4000054089+One.80%
Note: in examples 8 and 8A used to 0.6% CMC, H-58-3:7H4XF in the ratio of 70:30

Example 1 is a control, in which the thickener used the product Culminal®MHPC 20000PFR. Cracking and Rabina was very acceptable. In cases other products Culminal MHPC variable chemical nature of the improvements of these two properties has demonstrated other work.

Example 2 shows that the diatomaceous earth+CMC 7H4XF with 2% attapulgite allowed to prepare granular dense connective mixture whose properties during aging deteriorated even more. It should be noted that in total, used, 0.6% of thickener, not 0.4%as recent experience, including one that is obtained from consideration of the above-mentioned references, patents, showed that the amount of 0.4% would be insufficient. 0,6%number is redundant. In example 2A was achieved properties connecting MESI, when the total amount of the thickener was reduced to 0.5%. It was obvious that the coupling mixture is still kept a granular structure. The viscosity dropped from 760 (example 2) up to 600 units of B, but with age it excessively increased, and the consistency of the product 2A zahustovali not as bad as in example 2, but enough to not be considered a material useful. When the total amount of the thickener was reduced to 0.4% (example 2B), the coupling mixture was initially somewhat weak, with insufficient resistance against stains and bad transfer with the trowel on the cladding sheet. Due to CMC interactions with attapulgite stress at yield point (gel) in a short time unacceptably increased. This behavior was not unexpected, it was noted in cases with other CMC products when attapulgite used at concentrations typical of those in which it is used in industry. This leads to the conclusion that in order to make CMC a useful thickener in the connective substance, the number of attapulgite should certainly greatly reduce.

Example 3 showed the effects of reduced clay content up to 0.25%while other conditions remained the same as in example 2. Used in a total of 0.6% of thickener, CMC 7H4XF+diatomaceous earth. The viscosity of the connection, see the si was 550 units B, the structure was only slightly grainy, adhesion, cracking and resistance to rabini were very good. In the short-term aging, after 3 days of connective mixture zahustovali in a small degree, was suitable and good quality when compared with the products of examples 2 and 2A, which were very thick and unusable, and example 2B, which zagustevat to a lesser extent.

The experiments of examples 4, 5 and 6 were conducted to determine the degree of usefulness of CMC products in connection mixtures, mainly when they were mixed with diatomaceous product. Diatomaceous earth has never received approval from the producers of the connecting mixtures, because it caused the formation of a pasty, difficult to distribute the product. These examples show that it can be used with the cooking quality of the connection mixtures with very good properties when mixed with two significantly different CMC products: CMC X33432-76-2 (SKMZ: 0,92, SP: 20000) and H-58-3 (SKMZ: 1,12, SP: 15600) the company Aqualon. The product of example 4, which tagusari a mixture of diatomaceous earth and CMC X33432-76-2 the Aqualon company in the ratio of 50:50 is a very good coupling mixture, exhibiting excellent properties, including adhesion. The product of example 5 with CMC X33277-58-3 company Aqualon very similar to the product of example 4; his only negative is Toroni is some density to the touch. In order to fix this minor flaw, the total amount of the thickener was reduced to 0.5% (example 6). This coupling mixture has all the advantages of the above features, without any density or tar to the touch. It also contains only 0.25% clay. Also much improved by cracking and ripples within comparison with the control and with the products of examples 2% clay. It was noted that if the diatomaceous earth was the only thickener, the coupling mixture was unstable. Sometimes, depending on the other components, which are contained, and how it was prepared this coupling mixture (for example, duration of mixing, pre-mixing or individual adding key components)during the syneresis (protrusion water). This undesirable drawback was not observed when I attended CMC.

Examples 7 and 7A show that in the absence of clay you can use a mixture of "diatomaceous earth plus CMC". In these two examples have used the product Cekol®100,000 firms Noviant (SKMZ: 0,76, SP: 9800) when the total number of thickener 0.6 per cent. Rheological properties were slightly different from the properties of the products prepared in examples 4 to 6, containing 0.25% of clay. The products of examples 7 and 7A were less consistent and weaker. One is to these properties are often preferred in regions which are characterized by a cold climate, where, when the temperature drops below the average summer values, such "weaker" connective mixture, typically acquires the consistency. Example 7A shows that the elimination of mica does not have a significant influence on the properties of connective mixture, and the only obvious change is very slight increase in the already low level of cracking. If we turn to the example 1, it can be noted that this control product with 5% mica and without CMC is characterized by the fact that cracking occurs.

Examples 8 and 8A show that CMC can be used in the connective substance as the sole thickeners. In the absence of clay and appropriate precautions surfaces of the connecting mixtures tend to dry out, and usually appears weak consistency. As CMC used products H-58-3 described above, and 7H4XF the Aqualon company in the ratio of 70:30. Product H-58-3 company Aqualon closely matches the operational properties of the product Cekol 100,000 firms Noviant, which was used in examples 7 and 7A. The product of example 8, which was 10 weeks, maintained the rheological characteristics that it possessed when it was first prepared, not zagustevat and koutsokoumnis, and its surface did not show p is Isakov drying. Example 8A shows how a typical 2%clay content causes rapid transformation of the above-mentioned connection of the mixture in koutsokoumnis material. Within less than 3 days, the product of example 8A was acquired elastic, kauchukopodobnoe consistency, lost fluidity and the ability to distribution. These properties could not be eliminated by stirring or the influence of shear force on the coupling mixture. It was found that the amount of 1.0% is excessive, to 0.75% may be acceptable, depending on other variables connective mixture, and 0.5% is usually acceptable. In any case, the concentration of clay <0,5% not determined unacceptable properties of the connective mixture.

Example 9

This example shows that as part of the package thickeners preferably, but not necessary, to use diatomaceous earth. If shared thickener is considered mandatory for specific improvements of this composition, MGPC with CMC connective mixture gives excellent properties. Another earlier work has shown that a well manifest itself polymers GMGEC Nexton®in combination with CMC. I believe that the same results would be obtained with other types of CMC presented in the present description, in conjunction with other typical thickener connective mix/modifier is mi rheological properties, including, though not limited to, hydroxyethyl cellulose, GMGEC Nexton, methylhydroxyethylcellulose and derivateservlet ethers diatomaceous earth.

Examples 10 through 15 - Lightweight connective mixture

Examples 10 through 15 illustrate the advantages and disadvantages of the use of CMC in a lightweight, persistencia compositions. The properties of these coupling compounds are illustrated below. The following table 3 shows the specific components of examples and the test results on the viscosity (unit B), cracking, rabito, structure and adhesion.

TABLE 3
The specific composition of lightweight connecting mixtures
Approx No.Clay, %Mica, %Kieselguhr, %MGPC, %CMC, %Type CMCEd. BCrackingRabinaStructureAdhesion
102,0000,50-45098One.80%
1100000,67H4XF600 88One.85%
11A00000,57H4XF55088One.80%
1200000,6H-76-253099One.90%
12A00000,5H-76-249099One.90%
13000,300,3H-76-251088One.85%
140,7500,300,3H-76-248099One.85%
150,75000,30,3H-76-2520108One.100%

To describe the components presented in the table is 2 and 3, following definitions are used.

Types of CMC:

(1) H-76-2, the company Aqualon, SKMZ: 0,92, SP: 20000

(2) CMC 7H4XF, the company Aqualon, SKMZ: 0,78, SP: 7500

(3) Cekol 100,000, the firm Noviant, SKMZ: 0,76, SP: 9800

(4) H-58-3, the company Aqualon, SKMZ: 1,12, SP: 15600

(5) Walocel 40000, firm Wolff, SKMZ: 0,78, SP: 9800.

Shared thickeners:

diatomaceous earth Galactosol 20H5F1

Culminal: MHPC 20000PFR (connective mixture of normal specific gravity)

Methocel: J75MS (lightweight connective mix)

Numerical estimation of cracking and rabini:

10: no

9: traces

8: very weak

7: weak 6: moderate

5: moderate/strong

4: strong

Structure:One.:
homogeneous
SP.: grainy.
(CL.: slightly)

Adhesion: basic %, a measure of binding paper tape with gypsum sheathing sheet

Example 10 is a control example, which shows the connection properties of the mixture, when the thickener/rheology modifier is a product Methocel®J75MS Dow. This coupling mixture is acceptable in most aspects. Adhesion was found that 80%, it usually is regarded by many as an absolute minimum for technically praml is by connecting mixtures.

Examples 11 and 11A show the properties attached to the connecting substance, when a thickener is used CMC 7H4XF in the absence of clay. Freshly prepared connective mixture had a thick consistency, within 24 hours she zahustovali to the extent that it became neraspredeleno. When it was diluted or prepared with additional amount of water, thickening still occurred, albeit to a lesser degree. If and only if it was used for 5 to 6 h after preparation, this coupling mixture would be unsuitable. (The properties of this connection of the mixture was determined within this time). Example 11A shows that the decrease in the concentration of CMC to 0.5% resulted in weak decrease of adhesion is equal to the adhesion cooked in the control case. In table 3 is not shown, but it should be emphasized that the CMC at a concentration of 0.5% increased stability during aging. The coupling mixture zahustovali to a low degree, but after 3 days of aging was suitable and easily distributable. She still lacked resistance to stains (consistency), despite povyshennuyu viscosity (580 unit B). Similar results were obtained with other examples of CMC, which had SKMZ is less than 0.9. This allowed to conclude that CMC with a minimum value of SKMZ≥0,76 which ACOs can give satisfactory properties lightweight connective mixture, which also is quite stable during aging. As examples 12 and further show that CMC with SKMZ 0,92 gives lightweight connective mixture of the desired properties of the original and (not shown in table 3, but it is approved in the present description) during aging. It was also found that CMC with SKMZ 1,12 behaves the same as in this example. CMC with SKMZ 1,12 has a lower viscosity, molecular weight and SP; therefore, to meet the precise properties, achieved by using CMC with SKMZ 0,92, it would be necessary regulation or the content of CMC, or the amount of water. CMC with SKMZ 1,12 also means preparing stable over time connective mixture.

Examples 12 and 12A show the positive effects of increasing SKMZ and 0.92 in the absence of clay. Contrary to what was shown in examples 11 and 11A, connecting these mixtures showed excellent quality initially and after aging. Adhesion was excellent, and Rabina better than the control substance.

Example 13 illustrates the usefulness of diatomaceous earth as a shared thickener with the same CMC. The coupling mixture was again found to be quite acceptable, possessing a slightly higher density to the touch than those prepared in the above example 12, possessing the same concentric is her thickener, but at 100% CMC. Resistance against stains was slightly better than in example 13. It is possible that if these connective mixture to dilute for use with automatic device, there may be obvious differences in properties during application. Which one would be preferred, is, of course, subject to the personal taste of the consumer (and producer), and mention of this in the present description are only intended to show that the differences arise due to diatomaceous earth.

Examples 14 and 15 illustrate the properties achieved in the presence of the clay content of 0.75%, when for thickening of the connective mixtures using a combination of either CMC+diatomaceous earth, or CMC+MGPC. Both are excellent quality. Their rheological properties are different due to the presence of clay. Which one would be preferred, is also a matter of personal preference. If the clay content is increased to 1%, you'll note some instability and grit. This allowed us to conclude that when CMC is the whole or part of a package of thickeners, in order to maximize the properties of connective mixtures, the clay content should not exceed about 0.75%. It was also shown that acceptable properties have achieved in the absence of clay. In a preferred embodiment the differences realogy the definition of property is a matter of personal choice. It is also clear that the amount used containing CMC thickeners can be reduced to as low concentrations as 0.4 percent.

Although the invention is described with reference to specific ways of its implementation, it should be borne in mind that they are not intended to limit its scope and that many variations and modifications, mainly mixtures of polymers, can be performed without exceeding the scope, objectives and essence of the present invention.

1. Ready-to-use composition of the connective drying the mixture comprising a binder, spustitelny system, filler, water and biocide, spustitelny system which includes unstitched the sodium carboxymethyl cellulose (CMC) with the lower limit of the degree of substitution (Sz) 0,76 and the lower limit of the degree of polymerization (CP) 1000 and is contained in a quantity from 0.01 to 0.6% based on the total weight of the composition.

2. Ready-to-use composition of the connective drying the mixture type according to claim 1, spustitelny system which is an unstitched CMC, which has a lower limit of the Sz 0,78.

3. Ready-to-use composition of the connective drying the mixture type according to claim 1, spustitelny system which is an unstitched CMC, which has a lower limit of the Sz 0,90.

4. Ready-to-use composition of the connective mixture drying tee is as according to claim 1, spustitelny system which is an unstitched CMC, which has an upper limit NW 1,5.

5. Ready-to-use composition of the connective drying the mixture type according to claim 1, spustitelny system which is an unstitched CMC, which has an upper limit Sz 1,2.

6. Ready-to-use composition of the connective drying the mixture type according to claim 1, spustitelny system which is an unstitched CMC, which has a lower limit SP 5000.

7. Ready-to-use composition of the connective drying the mixture type according to claim 1, spustitelny system which is an unstitched CMC, which has a lower limit SP 6000.

8. Ready-to-use composition of the connective drying the mixture type according to claim 1, spustitelny system which is an unstitched CMC, which has an upper limit SP 25000.

9. Ready-to-use composition of the connective drying the mixture type according to claim 1, spustitelny system which is an unstitched CMC, which has an upper limit SP 20000.

10. Ready-to-use composition of the connective drying the mixture type according to claim 1, spustitelny system which is an unstitched CMC, mixed with other commercially available CMC products that give the properties of standard clinostigma soy is IntelliJ mixtures, but in the absence of any clay.

11. Ready-to-use composition of the connective drying the mixture type according to claim 10, in which connection the CMC includes CMC with SKMZ less than 0,75.

12. Ready-to-use composition of the connective drying the mixture type according to claim 1, spustitelny system which includes shared thickener selected from the group comprising metilgidroxiatilzelllozu (AGEC), hydroxyethyl cellulose (SCE), hydrophobically modified hydroxyethyl cellulose, hypromellose (HPMC), methylhydroxyethylcellulose (MHEC), hydroxypropyltrimonium diatomaceous earth and rederivation diatomaceous earth.

13. Ready-to-use composition of the connective drying the mixture type according to claim 1, in which the lower limit of the number shutteling system is 0.3 wt.%.

14. Ready-to-use composition of the connective drying the mixture type according to claim 1, the binder which is selected from the group comprising polyvinyl alcohol, ethylene-vinyl acetate latex, polyvinyl acetate latex, starch, casein, polyacrylamide and copolymers of acrylamide and acrylic acid.

15. Ready-to-use composition of the connective mix drying-type 14, in which the binder is contained in an amount of from a lower limit of about 1.0 wt.% and an upper limit of about 3.0 wt.%.

16. Ready KJV is to use the structure of the connective drying the mixture of the type indicated in paragraph 15 in which the binder is contained in an amount of about 2.5 wt.%.

17. Ready-to-use composition of the connective drying the mixture type according to claim 1, the filler which is selected from the group including calcium carbonate, dihydrate calcium sulphate, dolomite, limestone, and mixtures thereof.

18. Ready-to-use composition of the connective mixture drying type 17, in which the filler is a calcium carbonate.

19. Ready-to-use composition of the connective drying the mixture type according to claim 1, in which the lower limit of the amount of filler is about 45 wt.%.

20. Ready-to-use composition of the connective drying the mixture type according to claim 1, in which the lower limit of the amount of filler is about 50 wt.%.

21. Ready-to-use composition of the connective drying the mixture type according to claim 1, in which the upper limit of filler is about 65 wt.%.

22. Ready-to-use composition of the connective drying the mixture type according to claim 1, which contains a pH modifier to maintain the target pH values from 8 to 10.

23. Ready-to-use composition of the connective drying the mixture type according to claim 1, biocide selected from the group comprising 2-[(hydroxymethyl)amino]ethanol and 1,2-benzisothiazolin-3-one.

24. Ready-to-use composition of the connective mixture you housego type according to item 23, in which the biocide is contained in the number with the lower limit of from about 0.05 to about 1.0 wt.%.

25. Ready-to-use composition of the connective drying the mixture type according to claim 1, which contains clay, or mica, or mixtures thereof.

26. Ready-to-use composition of the connective mix drying-type A.25, which contains clay, which is chosen from the group comprising thick, montmorillonite, bentonite, illite, kaolin and attapulgite.

27. Ready-to-use composition of the connective mix drying-type p, in which the clay is attapulgite.

28. Ready-to-use composition of the connective mix drying-type A.25, in which the clay is contained in the number with an upper limit of 1.0 wt.%.

29. Ready-to-use composition of the connective mix drying-type A.25, in which the clay is contained in the number with an upper limit of 0.75 wt.%.

30. Ready-to-use composition of the connective mix drying-type A.25, in which the clay is contained in amount with the upper limit of 0.50 wt.%.

31. Ready-to-use composition of the connective mix drying-type A.25, in which mica is contained in the number with an upper limit of 1.5 wt.%.

32. Ready-to-use composition of the connective drying the mixture type according to claim 1, which contains perlite.

33. Ready apotre the governance structure of the connective drying the mixture type according to claim 1, in which the perlite is contained in amount with the upper limit of 8.5 wt.%.

34. Ready-to-use composition of the connective drying the mixture type according to claim 1, in which the perlite is contained in the number with an upper limit of 6.0 wt.%.

35. Ready-to-use composition of the connective drying the mixture type according to claim 1, which contains at least one additional component selected from the group comprising holding the air additives, surfactants, humectants, defoamers and mixtures thereof.

36. Ready-to-use composition of the connective drying the mixture type according to claim 1, whose density is from 7 to 11 pounds per gallon (lb/Gal).

37. Ready-to-use composition of the connective drying the mixture type according to claim 1, the density of which is from 12 to 15 pounds per gallon.

38. Ready-to-use composition of the connective drying the mixture type according to claim 1, in which water is present in sufficient quantity to ensure that the viscosity of this composition connective mixture in the range of from about 300 to about 700 damage Brabender (unit B).



 

Same patents:

FIELD: chemistry.

SUBSTANCE: invention concerns multicomponent local foam system for obtaining foam polyurethanes for local construction purposes, consisting of polyisocyanate (component A), and polyene containing water (component B), stored in separate containers, and epoxy resin based on bisphenol A and bisphenol F, and/or siloxane forpolymer with average mol weight from 200 g/mol to 10000 g/mol with reactive end alcoxy groups (component C), generic catalyst for polyurethane generation reaction and/or generic binding agent for siloxane forpolymer (component D) in spatially divided form, and optional filler, one or more colourants or pigments and generic additives. When mixed, the components of foam system form interpenetrating polymer mesh structure out of foamed polyurethane and at least one other polymer, with excellent adhesion to adjoining wall material, thus reducing water penetration or forming mechanically stable cork in case of fire to render resistance to fire. Claimed foam system is foaming and solidifying in severe conditions on construction site, e.g. at temperatures from 0°C to 40°C, and non-homogeneously filling of volume.

EFFECT: sealing of fractures and/or through orifices in building walls and/or floors.

23 cl, 2 tbl, 2 ex

FIELD: chemistry.

SUBSTANCE: proposed paste contains non-equilibrium content alloy powder with excess metal, capable of diffusion hardening and thermal reaction when heated with gallium. Gallium, saturated with nitrogen at pressure of not less than 5 MPa and temperature equal to melting point of gallium, is used in the paste. Minimum weight content of gallium is between 30% and 60%. Diffusion hardening temperature of the paste lies between 29.7°C and 700°C and the time interval lies between 2 and 8 hours.

EFFECT: increased strength of the paste.

3 ex

FIELD: chemistry.

SUBSTANCE: invention relates to anaerobic sealing compositions used for sealing and locking threaded cylindrical or flanged joints. The composition contains ether of methacrylic acid, i.e. a mix of aromatic and aliphatic oligo ether acrylates containing at least 10 wt % of aromatic oligo ether acrylate, the initiating additive and accelerating additive, i.e. pre-alloyed mix of sulphonamide, amine and hydrazine compounds taken in the molar ratio of (2-2.5):1:1, a stabilising additive and filler.

EFFECT: improved quality of anaerobic composition due to reduction in time of assembling at ambient temperature after introducing proposed composition into threaded cylindrical or flanged joint.

2 tbl, 20 ex

FIELD: chemistry.

SUBSTANCE: invention refers to adhesive polymer composite material, method of production thereof, product keeping its shape, and hermetic or adhesive composition containing mentioned composite material used in automotive engineering, constructional engineering, wood working, printing industry, footwear industry, as well as in sealing materials and insulation substance. The task in view is solved due to application of polymer composite including at least one hydrogenated or nonhydrogenated polymer nitrile rubber with Mooney viscosity (ML 1+4 at 100°C) less than 30 at least one cross-linking agent or vulcanizing system, and if required at least one bulking agent. Hydrogenated or nonhydrogenated polymer nitrile rubber is derived from metathesis reaction of polymer nitrile rubber with one or several compounds of general formulas I, II, III or IV. If required it is followed by hydrogenation.

EFFECT: development of composite material with long adhesive capacity, elasticity and thermal stability.

9 cl, 3 tbl, 3 ex

FIELD: chemistry.

SUBSTANCE: hardened by moisture composition of hermetic contains (in wt %): amorphous poly-alpha-olefin polymer with silane functional group (5-80), thermoplastic elastomer (10-75) and gluing agent (5-60), as well as versions of insulating glass packets with application of claimed hermetic.

EFFECT: hermetic composition is suitable for combination of glass with various substrates.

12 cl, 1 tbl, 3 ex

FIELD: construction.

SUBSTANCE: grouting compound contains, wt %: mineral binding agent - expanding alumina, gypsum alumina cement, portland cement, lime, salts of silicic or phosphoric acids or their mixture - 50-95, and expanding additive, which is a product of acid and/or base interaction with cement - 5-50. To produce compound expanding additive is prepared by acid and/or base interacting with cement in water-disperse medium, suspension curing, drying, milling and mechanical mixing all compound components.

EFFECT: prevention of all leaks and reinforcement of element fixing in construction structures.

8 cl, 2 tbl, 7 ex

FIELD: chemistry.

SUBSTANCE: oxidised styrene-butadiene thermoplastic elastomer is used as the bonding agent, which has at its ends macromolecules of reactive carboxyl or hydroxyl groups, with a prevalence of the later; as the hardening agents of the polyisocyanates with a fraction of the total mass of the isocyanate groups not less than 30%, as the filler fine-dispersed mineral powders or pigments, as the modifying components - micro-reinforcing filler - wollastonite, as the plasticiser - dibutyl phthalate, additionally added is a curing agent - oil-thallous siccative and a stabiliser - styrenated diphenylamine BTC-150 or BC-30A; with the following ratio of components by mass %: oxidised styrene-butadiene thermoplastic elastomer 52.0-60.0; hardening agent polyisocyanate 7.0-9.0; hardening agent siccative 1.2-1.7; filler - fine-dispersed mineral powder or inorganic pigments 20.0-29.0; plasticiser - dibutyl phthalate 0.6-0.8; modified additive - wollastonite 6.0-8.0; phenol type stabiliser BTC-150 BC-30A 1.2-1.5, and the composition does not contain any organic solvents.

EFFECT: reduction in the shrinking deformation, increasing hardness, lowering the temperature of using the composition.

1 cl, 2 tbl, 13 ex

FIELD: technological processes.

SUBSTANCE: sheet material for production of article from it contains metal wafer and system of polymer coating fixed to it. Internal layer of coating contains PET and modified PET as layer for adhesion of this system with wafer. As barrier layer coating contains layer that includes PET and PBT. External layer contains PET with non-sticking properties, for prevention of this material sticking to blanking tools at normal working temperatures of industrial blanking. Metal wafer is made of steel, or aluminium, or aluminium alloy. System of coating may be produced by extrusion of single layer or joint extrusion of at least two layers. Coating system may be produced by preliminary production of film and its fastening with wafer.

EFFECT: invention makes it possible to improve quality of drink cans production and to increase their shelf life and preservation of taste properties.

18 cl, 2 dwg, 7 tbl

FIELD: chemistry.

SUBSTANCE: composition for manufacturing hermetising and hydroinsulating materials, roofing and anticorrosion coating contains polysulphide oligomer - liquid thiocols with average numeric molecular weight 1700-5500 and viscosity at 25°C 7.5-50 Pa·s, manganese dioxide, plasificator-glycerol, manganese dioxide, accelerator 2,4,6-tris-(dimethylaminomethyl)-phenol and additionally oligobutadiendiol, polyisocyanate, catalyst of uretane-formation, diatomite.

EFFECT: increase of physical and mechanical properties and hydrolytic stability of hydroinsulating and anti-corrosion materials.

2 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to impregnation and hermetisation of porous products with thermally hardened compositions based on (meth)acrylic monomers. Claimed is thermally hardened composition for impregnation and hermetisation of porous products, containing (in mass fraction): 100 (meth)acrylic monomer, 0.1-0.5 nitronitrile, 0.01-0.04 hydrohynone, 0.004-0.03 disodium salt of ethylendiaminetetraacetic acid, 0.001-0.03 2,2,6,6-tetramethyl-4-oxopiperidin-1-oxyl and 0.5-5.0 non-ionogenic emulsifying agent. Method of impregnation and hermetisation of porous products includes their vacuum processing with further impregnation under vacuum and atmospheric pressure with abovementioned composition and hardening at temperature ≥90°C. Thermally-hardened composition has higher serviceability and allows to increase productivity of impregnation and hermetisation method essentially.

EFFECT: increasing productivity of method of impregnation and hermetisation of porous products by means of thermally-hardened compositions.

2 cl, 1 tbl, 15 ex

Putty // 2327662

FIELD: construction.

SUBSTANCE: said utility invention relates to construction materials and may be used for levelling concrete plastered surfaces intended for painting with polystyrene paints. The putty contains the following components, % weight: ground chalk 58-62, 10% polystyrene lacquer 38-41.6, clay 0.07-0.12, surfactant 0.094-0.116.

EFFECT: increased adhesion strength and plastic properties.

2 tbl

FIELD: manufacture of building materials; raw mixes for manufacture of heat-insulating articles used for walls, floors and partitions.

SUBSTANCE: proposed raw mix for manufacture of heat-insulating articles contains wood filler, phenol formaldehyde resin, hydrolysis lignin and powder-like material obtained by grinding rejected compact disks to specific surface of 2000-2500 cm3/g at definite ratio of components.

EFFECT: enhanced strength of articles made from this mix.

1 tbl

FIELD: building material industry, particularly plastic material production and for heat-insulation and structural material manufacturing.

SUBSTANCE: mix comprises filler, grinded thermoplastic waste material, namely polyethylene terephthalate and polyethylene waste, as well as mineral component. The filler is burnt quartz sand. The mineral component is chalk and fine silicon oxide. All above components are taken in the following amounts (% by weight): burnt quartz sand - 30-40, polyethylene terephthalate waste - 60-50, polyethylene waste - 5.0-10, chalk - 2.5-3.5, fine silicon oxide - 2.5-2.0. Thermoplastic waste material used for mix production is preliminarily grinded along with thermomechanical treatment thereof in the presence of chalk and then is atomized in the presence of fine silicon oxide.

EFFECT: increased flexural strength and impact elasticity, as well as decreased water absorption capacity of article formed of above mix.

1 tbl, 3 ex

FIELD: building materials.

SUBSTANCE: composition for preparing heat-insulating materials comprises unfibered waste in textile and weaving manufacture as a fibrous component and/or waste in manufacture of nonweaven materials with unoriented fiber structure characterizing by average length 18-60 mm and average diameter 6-12 mm. As a binding agent the composition comprises 3-9% solutions of polystyrene foam and/or polystyrene waste in organic solvents, and ammonium bromide as an antipyrene in the following content of components, wt.-%: indicated binding agent, 14.5-28.3; indicated fibrous component, 66.0-82.1; ammonium bromide, 3.4-5.7. Heat-insulating material prepared on the proposed composition base shows the following properties: average density is 150-200 kg/m3, heat conductivity is 0.022-0.025 Wt/(m x K), bending strength limit is 0.2-0.4 MPa, rupture strength limit is 0.24-0.36 MPa, strength at 10% of deformation is 0.020-0.054 MPa. The composition shows biological stability and difficulty combustibility. Invention provides decreasing the coefficient of heat conductivity, cost of material and retaining its physical-mechanical indices. Invention can be used in preparing heat-insulating materials used in building industrial and municipal buildings and in rural building also.

EFFECT: improved and valuable properties of composition.

2 tbl

FIELD: building, particularly forming coating on sport ground and similar structures.

SUBSTANCE: method involves securing vertical rods in load-bearing layer, arranging zigzag heating wires connected with power source on load-bearing layer; connecting heating wires to vertical rods and applying coating material on load-bearing layer. Coating material is concrete of the following composition (% by weight): low-molecular oligodiene - 8-11; sulfur - 3-6.5; thiuram - 0.3-0.7; zinc oxide - 1.5 - 5.0; calcium oxide - 0.3-0.6; ash from heat power plant - 7-10; remainder - quartz sand. Uninsulated heating wire is used as coating layer reinforcement. Rod height corresponds to coating layer thickness. Electric power is supplied from power source for 55-56 min to obtain coating layer temperature of 85-95°C and then for 180-200 min to maintain 115-125° temperature thereof. Rate of temperature change may not exceed 1°C per minute.

EFFECT: reduced power inputs along with increased coating strength.

2 tbl, 2 dwg

FIELD: building materials, in particular new artificial stone.

SUBSTANCE: claimed stone contains 25-75 vol.% of inorganic filler and resin. Stone has coarse surface with uncovered inorganic filler, wherein average depth of downward grooves is 0.02-1.0 mm. Stone of present invention has complex structure, is massive to the feel and has clear, deep, and marble-like color. Moreover stone has high surface hardness, good formability, and excellent nonslip properties being in contact with bare feet and hard footgear sole.

EFFECT: improved artificial nonslip stone for floor manufacturing.

18 cl, 11 tbl, 2 ex, 9 dwg

Rolled fiberglass // 2178357
The invention relates to the production of rolled fiberglass using a thermosetting binder, widely used as thermal insulation of pipelines inside and outside of buildings

Astringent // 2168476
The invention relates to the construction materials industry, namely the composition of the charge of white Portland cement
Complex additive // 2307806

FIELD: manufacture of building materials; additives for binders in manufacture of concretes and mortars.

SUBSTANCE: proposed complex additive contains amylose, hepta magnesium sulfate - MgSO4·7H2O; it contains additionally aluminum hydroxide at the following ratio of components, mass-%: amylose, 10-30; magnesium sulfate, 50-60; aluminum hydroxide, 20-30.

EFFECT: reduced setting time of concrete and mortar; reduced shrinkage.

1 tbl, 1 ex

Up!