Composition for roofing and waterproofing materials

 

(57) Abstract:

Usage: for roofing and waterproofing materials used in construction. The inventive composition comprises the following components, wt.%: butyl rubber 3,0-5,0; plasticizer 10,0-13,0; filler 10,0-20,0; polybutene 0.5 to 1.5; polyethylene wax 7,0-9,0; bitumen to 100%. table 2.

The invention relates to the use of organic substances as components in bitumen compositions for the manufacture of sheet roll roofing and waterproofing materials used in construction. Quality roofing and waterproofing materials depends on its composition and properties.

The main performance characteristics that determine the suitability of the coating material in the production of roofing and waterproofing materials are primarily hardness, characterized by the penetration depth of the needle, the behavior at low temperatures (brittle Fraas), distensibility, a small variation of plasticity when the temperature that characterizes the elasticity of bitumen, his ability to work on bending, softening temperature.

Known use as a coating material is franich impregnating bitumen grades BOC-45/180 and BOC-45/190 marks.

In accordance with the requirements for high-quality roofing bitumen BOC-90/30 hardness of bitumen (penetration depth of the needle of 0.1 mm at 25oC) must not be above 35; softening temperature of 85-95oC; brittle Fraas not higher than minus 10oC.

Bitumen is a mixture of high molecular weight hydrocarbons and asphalt-resinous substances. The presence of asphaltenes provides hardness and high softening temperature, the resin enhances the ability to cementation and elasticity. The oxidation of the bitumen to obtain BOC-90/40 and BOC-90/30 increases the content of asphaltenes and decreases respectively the tar. In the result, the temperature values of softening on KISH bitumen increases, the hardness increases, but the extensibility, elasticity is deteriorating, especially in sub-zero temperatures.

So, the requirements for the roofing bitumen BOC-90/40 when the fragility of Fraas not higher than minus 20oC allow the hardness values in the range of 35-45 (depth of penetration of the needle of 0.1 mm at 25oC), which is considerably lower compared to bitumen BNK 90/30.

Experience shows that one oxidation it is impossible to achieve a comprehensive improvement of operational characteristics of pokr is estu roll roofing and waterproofing materials must obtain a coating of bitumen is firm and elastic at low temperatures (not below minus 30 to minus 40oC). To achieve a comprehensive improvement of the properties mentioned above the introduction of the coating bitumen additives.

Known composition [1] for the production of roofing material on the insulating base asphalt and/or coal tar pitch with a possible addition of 2-15% of the resin oils, plasticizers containing 50% of esters of phthalic, adipic or sabatinovka acid adsorbed on infusorial earth and/or activated carbon, 0-10% best choice of latex or PVC, and 0-0,2% of an antioxidant, preferably 0-0,15% of the inhibitor, and 0-25% mineral filler. In this composition due to the complex additives and, first and foremost, the best choice latex improves ductility, however, the hardness decreases.

Known bituminous mixture [2] containing 20-80% petroleum bitumen, 20-60% atactic polypropylene and 35% mineral filler, preferably silica. Due to the additive polypropylene mixture maintains its protective properties both at high and at low temperatures, due to the increase of the softening temperature of the bitumen, however, the addition of polypropylene impairs the flexibility of the coating based on the above-mentioned mixture.

The closest (prototype)in the sheet roll roofing and waterproofing materials [3] including synthetic rubber, polyoxypropyleneamine, plasticizer, filler, bitumen in the following ratio, wt.

Synthetic rubber 5-15

Polyoxypropyleneamine mol. m 500-1000 1,5-5

The plasticizer 5-25

Filler 10-20

Bitumen Else

The specified composition with wide possibilities of varying quality and composition ratio of the components is not possible to achieve a comprehensive improvement of the basic performance properties, as well as improve the performance of asphalt aggregates. For example, given five samples of different composition can be stated that due to the introduction of additives, provided the specified composition, the softening temperature of the original bitumen (65-80oC) rises to 110o-130oC, however, the hardness of most of the samples do not meet modern requirements for the composition for the top layer. For comparison in the selected sample N 1 (prototype) that the hardness does not meet the requirements for bitumen BOC-90/30 at high softening temperature and the highest among the samples the performance of the unit.

The technical problem of the invention is to increase the hardness pokryilsya fact, what a composition comprising bitumen, butyl rubber, a plasticizer and a filler further comprises polybutene and polyethylene wax in the following ratio, wt.

Butyl rubber 3,0-5,0

The plasticizer 10,0-13,0

Filler 10,0-20,0

Polybutene of 0.5-1.5

Polyethylene wax 7,0-9,0

Bitumen to 100

As the butyl rubber used butyl rubber 1675N (substandard), which is a waste product of butyl rubber (copolymer of isobutylene and 1-5% isoprene) Togliatti ON sitescheck".

As the plasticizer is taken of the residual extract selective treatment - oil MO-6 on THE other 38.1011217-89.

As the filler used talc. Polybutene beyond 38.101743-81 is a low molecular weight (MM-550) polyisobutylene or a mixture of polymers of isobutylene, butene-1 and butene-2. Polyethylene wax on THE 102162-84 is a by-product in the production of low-pressure polyethylene.

The bitumen is of a low degree of oxidation and softening temperature 70oC. Examples of specific compounds are listed in table 1 (examples according to the invention 2-4).

Table 2 shows the results of tests on samples of the composition according to the invention (the s depth of penetration of the needle), when appropriate prototype values of the fragility of Fraas, and maximum performance of the asphalt aggregate.

Comprehensive improvement of these properties is caused not only by the introduction of additives, but also by the specific interaction of polyethylene wax and polybutene, which is confirmed by the analysis results of the samples 6, 7 in comparison with the declared (samples 2, 3, 4).

The increase in the concentration of additives above the stated limit (sample No. 5), or reduced below the stated limit (sample 1) leads to the deterioration of the performance properties of the compositions.

So, in comparison with the prototype achieves the improvement of the hardness, does not deteriorate the flexibility at sub-zero temperatures while increasing the performance of the asphalt aggregate.

Composition for roofing and waterproofing materials are made on the following technology.

Pre-exercise grinding butyl rubber and dispersion of polyethylene wax. In the mixer load plasticizer MO-6, bring the temperature to 110-120oC, injected polyethylene wax and keep stirring for 1 h Then increase the temperature to 160-180oC, enter the sequence is Orlando add bitumen and filler, total mixing time of about 4 h

The mixture is applied as a covering layer on the prepared subbase by the conventional methods of manufacturing a roll of roofing material.

Positive tests were conducted at SCE "Soft roof", where the process of obtaining the proposed composition will be introduced that will allow to obtain high quality, competitive roofing material and improve the environment of the whole area by reducing the oxidation process of the original bitumen.

Sources of information:

1. Application NDP N 269404, CL 08, publ. 12.06.89,

2. Application NDP N 256737, CL 08, publ. 21.09.87,

3. A. S. N 1558942, CL 08 95/00, publ. 23.04.90,

Composition for roofing and waterproofing materials containing bitumen, butyl rubber, a plasticizer and a filler, characterized in that it further comprises polybutene and polyethylene wax in the following ratio, wt.

Butyl rubber 3,0 5,0

The plasticizer 10,0 13,0

Filler 10,0 20,0

Polybutene 0,5 1,5

Polyethylene wax 7,0 9,0

Bitumen To 100.0 s

 

Same patents:

The invention relates to the production of protective covers for cables, obtained by deposition on the fabric bituminous compositions

The invention relates to the production of insulating polymeric materials that can be used for waterproofing of structures and corrosion protection of metal structures

The invention relates to methods for paints used for coating buildings, equipment, etc

The invention relates to a protective compositions based on polyisobutylene (PIB) having chemical resistance, and can find application in chemical, petrochemical industries, in transport, if necessary, transport and storage of acetaldehyde

FIELD: cathodic protection of metalwork.

SUBSTANCE: proposed paint-and-varnish material for corrosion protection of metalwork includes electrically conducting film-forming agent (electrically conducting polyethylene) and carbon nanotubes, from 10 to 80% of volume of paint-and-varnish material which increase electric conductivity and resistance to aggressive media and consequently mechanical strength of metalwork. Proposed paint-and-varnish material may additionally contain high-dispersed zinc powder ensuring additional cathodic protection from 40 to 90% of volume of paint-and-varnish material.

EFFECT: enhanced efficiency of corrosion protection of metalwork during protracted period of operation due to smooth electrical potential equal to potential of metalwork being protected.

5 cl, 1 tbl

FIELD: chemistry; insulation.

SUBSTANCE: invention pertains to a cable with a coating layer, made from waste materials. The cable consists of at least, one conductor with at least one transfer element and at least one layer of coating. The coating material contains between 30 mass % and 90 mass % of the overal mass of the coating material, at least, first polyethylene with density not more than 0.940 g/cm3 and melt flow index from 0.05 g/10 min. to 2 g/10 min., measured at 190°C and a load of 2.16 kg in accordance with standard ASTM D1238-00, and quantity from 10 mass % to 70 mass % of the overall mass of the coating material, at least, second polyethylene with density of more than 0.940 g/cm3. The first polyethylene is obtained from waste material. Use of at least, one polyethylene with density of more than 0.940 g/cm3 in the recycled polyethylene allows for obtaining a layer of coating, capable of providing for mechanical characteristics, in particular, breaking stress and tensile strength, comparable to characteristics of primordial polyethylene. The stated coating layer is preferably used as an external protective coating.

EFFECT: obtaining of a new type of cable insulation.

43 cl, 9 dwg, 4 tbl, 10 ex

FIELD: chemistry.

SUBSTANCE: plastic composition with low viscosity, containing polyethylene with molecular mass of 1300-2700 - 100 pts.wt, and polyethylene with molecular mass of 1080-1250, or diesel fuel or engine oil instead of the latter - 10-20 pts. wt.

EFFECT: coating is water resistant, elastic, frost resistant, weather resistant and corrosion resistant.

2 tbl

FIELD: chemistry.

SUBSTANCE: composition with multimodal distribution of molecular weight has density between 0.94 and 0.95 g/cm3 at 23°C and melt flow index (MFI190/5) between 1.2-2.1 dg/min in accordance with ISO 1133. The composition contains 45-55 wt % low molecular weight homopolymer A of ethylene, 30-40 wt % high molecular weight copolymer B of ethylene and another olefin containing 4-8 carbon atoms, and 10-20 wt % ultrahigh molecular weight copolymer C of ethylene and another olefin containing 4-8 carbon atoms. The composition has high processibillity and resistance to mechanical loads and breaking, especially at temperatures below 0°C.

EFFECT: flawless coating for steel pips has mechanical strength properties combined with high hardness.

10 cl, 1 tbl, 1 ex

FIELD: chemistry.

SUBSTANCE: invention relates to tubes with a coating, having a high-mechanical strength layer of multimodal polyethylene. The tube has an inner surface, an outer surface layer (A) and a coating layer (B) covering said outer surface layer (A). The coating layer (B) contains a coating composition (B-2) which contains 80-100 wt % multimodal ethylene copolymer (B-1), having shear thinning index SHI2.7/210 from 10 to 100, where SHI2.7/210 is determined by shear frequency experiments in linear viscosity stress interval at frequencies from 0.05 to 300 rad/s according to ISO 6721-1 as a ratio of complex viscosity values η(2.7 kPa)/η(210 kPa), containing a multimodal ethylene copolymer (B-1), which is a copolymer of ethylene and one or more alpha-olefin comonomers, having 4-10 carbon atoms. The multimodal ethylene copolymer (B-1) also contains (B-1-1) 49-59 wt % low-molecular weight ethylene homopolymer component with respect to weight of the multimodal ethylene copolymer (B-1), wherein said component (B-1-1) has weight-average molecular weight from 5000 g/mol to 70000 g/mol and (B-1-2) from 51 to 41 wt % high-molecular weight ethylene copolymer component with respect to the weight of the multimodal ethylene copolymer (B-1), wherein said component (B-1-2) has weight-average molecular weight from 100000 g/mol to 700000 g/mol and the multimodal ethylene copolymer (B-1) has weight-average molecular weight from 70000 g/mol to 250000 g/mol and flow melt index MFR2, determined according to ISO 1133 at 190°C under a 2.16 kg load, from 0.05 g/10 min to 5 g/10 min, flow melt index MFR5, determined according to ISO 1133 at 190°C under a 5 kg load, from 0.5 g/10 min to 10 g/10 min, and density from 930 kg/m3 to 955 kg/m3; and ratio of weight-average molecular weight to number-average molecular weight Mw/Mn from 24 to 50. Said high-molecular weight ethylene copolymer component has weight-average molecular weight from 100000 g/mol to 700000 g/mol. The multimodal ethylene copolymer (B-1) has weight-average molecular weight from 70000 g/mol to 250000 g/mol and flow melt index MFR2, determined according to ISO 1133 at 190°C under a 2.16 kg load, from 0.05 g/10 min to 5 g/10 min, flow melt index MFR5, determined according to ISO 1133 at 190°C under a 5 kg load, from 0.5 g/10 min to 10 g/10 min, and density from 930 kg/m3 to 955 kg/m3, and ratio of weight-average molecular weight to number-average molecular weight Mw/Mn from 24 to 50.

EFFECT: coating can be applied on tubes with high output and cost-effectiveness; coating has good mechanical properties.

26 cl, 1 dwg, 2 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to tubes with a polymer coating and more specifically to coated metal tubes used at high temperatures. The tube has an inner surface, an outer surface layer (A) and a coating layer (B) covering said outer surface layer (A). The coating layer (B) contains a coating composition (B-2) which contains a multimodal ethylene copolymer (B-1) which is a copolymer of ethylene and one or more alpha-olefin comonomers with 6-10 carbon atoms. The multimodal ethylene copolymer (B-1) has weight-average molecular weight from 70000 g/mol to 250000 g/mol, and flow melt index STR2, determined according to ISO 1133 at 190°C and a 2.16 kg load, from 0.05 g/10 min to 5 g/10 min, flow melt index STR5, determined according to ISO 1133 at 190°C and a 5 kg load, from 0.5 g/10 min to 10 g/10 min. Density of said multimodal ethylene copolymer (B-1) ranges from 946 kg/m3 to 956 kg/m3. The coating composition (B-2) contains 80-100 wt % multimodal ethylene copolymer (B-1) with respect to total weight of the coating composition (B-2). The invention also relates to a method of making a coated tube. Coating composition (B-2) is deposited on a tube having an outer surface layer (A) to form a coating layer (B).

EFFECT: obtaining a coated tube, where the coating has high hardness, good properties at high temperatures and acceptable cracking properties under stress.

33 cl, 1 dwg, 2 tbl

FIELD: construction.

SUBSTANCE: pipe comprises an inner surface, an outer surface layer (A) and a coating layer (B), coated with the above outer surface layer (A). The coating layer (B) contains a coating composition (B-2), including a multimodal copolymer of ethylene (B-1). The multimodal copolymer of ethylene (B-1) is a copolymer of ethylene and one or more comonomers of alpha-olefins having from 4 to 10 atoms of carbon and has an average weighted molecular mass from 70000 g/mole to 250000 g/mole, the ratio of the average weighted molecular mass to the number average molecular weight, Mw/Mn, from 15 to 50, melt index MFR2, determined in compliance with ISO 1133 at 190°C and the load of 2.16 kg, from 0.05 g/10 min to 5 g/10 min, melt index MFR5, determined in accordance with ISO 1133 at 190°C and the load of 5 kg, from 0.5 to 10 g/10 min, the density from 930 kg/m3 to 955 kg/m3.

EFFECT: pipes with coating have higher mechanical strength and may be manufactured with high throughput capacity and high efficiency of production.

30 cl, 1 dwg, 2 tbl

FIELD: construction.

SUBSTANCE: pipe comprises an inner surface, an outer surface layer (A) and a coating layer (B), coating the above outer surface layer (A). The coating layer (B) contains a coating composition (B-2), with a wear resistance ratio of 30 at the highest, and including a multimodal ethylene copolymer (B-1). The multimodal copolymer of ethylene (B-1) is a copolymer of ethylene and one or more alpha-olefin comonomers containing from 6 to 10 atoms of carbon and has an average weighted molecular mass from 70000 g/mole to 250000 g/mole, the melt index MFR2 determined in compliance with ISO 1133 at 190 °C and the load of 2.16 kg, from 0.05 g/10 min to 5 g/10 min, melt index MFR5, determined in accordance with ISO 1133 at 190 °C and the load of 5 kg, from 0.5 to 10 g/min, density from 930 kg/m3 to 950 kg/m3 and the ratio of the average weighted molecular mass to the number average molecular weight, Mw/Mn, from 15 to 50.

EFFECT: coated pipes have improved mechanical properties, for instance, very high resistance to cracking under stress, pipes may be coated with high efficiency and good cost-effectiveness of production.

28 cl, 1 dwg, 2 tbl

FIELD: chemistry.

SUBSTANCE: described is an electroconductive thermoplastic material for electrotyping, which contains a binding substance and electroconductive filler, where the binding substance is a mixture of polyethylene wax and paraffin in ratio of 2/1 to 1/3, and the electroconductive filler is graphite, with the following ratio of components, pts.wt: polyethylene wax 10-20, paraffin 10-30, graphite 60-70.

EFFECT: material enables free casting of an original article with electroconductive material when making a mould at low temperature and simplifies the technology of making moulds.

1 tbl, 1 ex

FIELD: chemistry.

SUBSTANCE: method of producing nanostructured polymer composite coating material involves mixing polyethylene and montmorillonite master-batch obtained beforehand via organo-modification of montmorillonite and addition thereof to a polymer, in a twin-screw extruder with unidirectional rotation at a temperature which enables polyethylene to melt, followed by extrusion of the obtained material.

EFFECT: invention increases cracking resistance the material, corrosion resistance, heat resistance, frost resistance, wear resistance, abrasion resistance, adhesion of the coating to substrate material, improves uniformity of distribution of montmorillonite particles in the polymer matrix.

5 cl, 1 ex

FIELD: chemistry.

SUBSTANCE: composition contains the following in pts. wt: 100 oligobutadiene diol, 5-30 plasticiser, 80-100 mineral filler, 1-5 trifunctional low molecular weight alcohol, 14-24 polymethylene polyphenylene polyisocyanate containing 29.5-31.0% isocyanate groups, 0.01-1.10 organotin catalyst, 0.5-1.5 2,4,6-tri-tertbutylphenol, 0.1-0.5 copper diacetate-di-ε-caprolactamate and 0.5-1.5 modifier. The modifier is modified montmorillonite obtained by reacting montmorillonite and 1,1,5-trihydroperfluoropentanol-1.

EFFECT: invention enables to obtain a composition with improved dynamic and physical and mechanical properties, as well as resistance to thermal-oxidative and light ageing.

2 tbl, 10 ex

FIELD: chemistry.

SUBSTANCE: curable polymer composition contains a linker which contains at least one organic polymer with silane groups, having molecular weight higher than 1000, and selected from a group of polymers consisting of aromatic or aliphatic polyurethanes which are partially or completely fixed with silane, polyethers and polyesters, polycarbonates, polyacrylate, polybutadiene, polyether with hydrolysable silane groups and mixtures thereof, at least one reactive polyorganosiloxane polymer having molecular weight from about 1000 to about 200000 and, optionally, an organic polymer without functional silane groups.

EFFECT: improved weather resistance.

15 cl, 4 ex

FIELD: petrochemical industry; production of the cold mastic for hydraulic insulation and sealing works.

SUBSTANCE: the invention is pertaining to production of the cold mastic for hydraulic insulation and sealing works, in particular, to compositions of the cold bitumen-polymeric protective coatings, in particular, to the bituminous- butyl rubber protective coatings and may be used for the hydraulic insulation and sealing of the metallic and concrete surfaces. The mastic contains bitumen, the mixture of petropolymeric resin and-or petropolymeric boiled oil and halogenated butyl rubber, red ochre, stearic acid, zinc oxide, commercial carbon and dissolvent. The technical result of the invention is creation of the composition possessing the high humidity resistance at saving of the mechanical strength: adhesion to the metallic surfaces, the bending and impact strength.

EFFECT: the invention ensures, that the created composition possesses high humidity resistance at saving of the mechanical strength, high adhesion to the metallic surfaces, the bending and impact strength.

2 tbl

FIELD: chemistry.

SUBSTANCE: coating is made of polymer composition containing reaction product of multifunctional polyisobutylene with chain-terminal allylic groups and multifunctional polysiloxane with SiH links. Herewith daily diffusion rate of gas hydrogen sulphide, mercaptan through the membrane containing mentioned composition of thickness within approximately 10 to approximately 30 mils, at 50°C is smaller than approximately 0.0010 gram of hydrogen sulphide per one square meter of membrane. Multifunctional polyisobutylene with chain-terminal allylic groups, cross-linked with multipurpose polysiloxane with SiH links allows for composition more or less impenetrable with respect to gas sulphurous compounds, such as hydrogen sulphide, mercaptan that makes possible to produce protective coating for various finished product, particularly components of electronic devices, and method of protection of various finished products from specified gas sulphurous compounds.

EFFECT: production of composition more or less impenetrable with respect to gas sulphurous compounds.

12 cl

FIELD: chemistry.

SUBSTANCE: curable polymer composition contains a linker which contains at least one organic polymer with silane groups, having molecular weight higher than 1000, and selected from a group of polymers consisting of aromatic or aliphatic polyurethanes which are partially or completely fixed with silane, polyethers and polyesters, polycarbonates, polyacrylate, polybutadiene, polyether with hydrolysable silane groups and mixtures thereof, at least one reactive polyorganosiloxane polymer having molecular weight from about 1000 to about 200000 and, optionally, an organic polymer without functional silane groups.

EFFECT: improved weather resistance.

15 cl, 4 ex

Up!