Processing aid for thermoplastic polyurethanes

FIELD: chemistry.

SUBSTANCE: invention relates to a processing aid, which is used in processing of thermoplastic polyurethanes, as well as to its obtaining and application in processing of thermoplastic polyurethanes into self-supporting films. The processing aid contains, wt %: hydrophobised, at least, partly aggregated metal oxide particles of pyrogenic origin, selected from the group, including aluminium oxide, silicon dioxide and mixtures of the said metal oxides 10-50, one or several thermoplastic polyurethanes 20-75, one or several isocyanates 0.5-25, one or several compounds, possessing an action of anti-adhesive or dispersing auxiliary substances 0.5-15. Also described are: a method of obtaining the processing aid and a method of manufacturing the self-supporting film, which includes dosing into an extruder a mixture of thermoplastic polyurethane and the processing aid, used in an amount from 0.5 to 35 wt % counted per the total amount of thermoplastic polyurethane, mixture melting and extrusion through a head for film extrusion with obtaining the film.

EFFECT: simplification of processing of thermoplastic polyurethanes, provision of maximally homogeneous mixing of thermoplastic polyurethane with liquid or viscofluid compounds, containing isocyanate groups.

6 cl, 2 tbl, 7 ex

 

The invention relates to a technological additive, which can be used in the processing of thermoplastic polyurethanes, as well as to its preparation and application. In addition, the invention relates to a method of manufacturing a self-supporting film with the use of such technological additives.

Thermoplastic polyurethanes (TPU) are produced in large quantities and in a wide range. When components of this group of substances due to their good elastic properties associated with the possibility of thermoplastic molding, chemical resistance and wear resistance are of particular interest. Therefore, they are suitable for the manufacture of, for example, mechanically and thermally loaded coatings, hoses, tubes, profiles, working on wear parts and other molded products.

Thermoplastic polyurethanes are constructed from linear polyols, usually of polyether polyols with ester or ether groups, organic diisocyanates and short-chained diols (chain extenders). To accelerate the reaction of formation of such polymers can be added catalysts. Such polyurethanes are semi-crystalline materials and belong to the class of thermoplastic elastomers. Their characteristic feature is segmented structure of macromolecules with what podrazdeleniye on the crystalline (solid) and amorphous (soft) segment this structure defines the properties of thermoplastic polyurethane.

Melting at significantly different temperatures, hard and soft structural parts, which at room temperature to form a physical grid, and unfavorable rheological properties of TPU hot melt determine the complexity of polyurethane processing associated with the irreversible destruction of the polymer chain during thermoplastic processing.

To eliminate these disadvantages in the prior art, it was proposed to subject TPU stitching. As described in WO 2005/054322, known to the formation of cross-linked structures by adding the isocyanate to the molten thermoplastic polyurethane as forprimary cross-linking agents. However, this method due to its complex hardware design to date has not been used in practice. As further disclosed in WO 2005/054322 caused it besides other difficulties with ensuring homogeneous mixing is usually presented in the form of granulate TPU with liquid or plastic compounds containing isocyanate groups.

In addition, the test of thermoplastic polyurethane with compounds containing isocyanate groups, is difficult in solving chemical task, since the molten TPU mixed with what Calimera usually in the extruder, which is too fast or too dense stitching can be blocked.

To overcome such difficulties in conducting the reaction of thermoplastic polyurethanes with compounds containing isocyanate groups, in WO 2005/054322 a method involving the use of aliphatic isocyanates with at least three isocyanate groups, and aromatic isocyanates with two isocyanate groups. This approach should provide a reliable process. The disadvantage of this method is that, as before, remain problems with the handling of isocyanates and their dosage, and the combination of di - and trifunctional isocyanates is not universally applicable and therefore cannot be used in the processing of thermoplastic polyurethanes some types.

Adding diisocyanate to thermoplastic polyurethane during thermoplastic processing is not a new approach. Thus, in particular, in DE 4115508 says that this measure can improve the properties of thermoplastic polyurethane.

In DE 4112329 the claimed method, which should ameliorate problems associated with dispensing the added isocyanate, due to the fact that the original TPU subjected to swelling in the presence of liquid in the processing conditions MDI.

In WO 2006/128793 described method, the implementation of which is obtained by the Sol-gel process silica, polyol and isocyanate is subjected to reaction between the formation of thermoplastic polyurethane, silicon dioxide mixed with at least one of the starting materials. This method should provide greater flexibility polyurethane.

The disadvantages of the known methods is that they only partially solve the complex problem of thermoplastic polyurethanes. As such shortcomings should be called problems with the handling of isocyanates, problems with dosage problems, due to the rheological properties in the recycling process, the insufficient strength of the products and that they have insufficient strain in tension and compression.

The present invention was based on the task to offer a technological additive, which would affect the properties of existing thermoplastic polyurethanes with their thermoplastic molding in such a way as to prevent the manifestation of the above deficiencies. The objective of the invention was further in the development of the method of obtaining such technological additives.

The object of the invention is a technological additive containing:

a) hydrophobizated, less is th least partially aggregated metal oxide particles, selected from the group comprising aluminum oxide, silicon dioxide and mixtures of these metal oxides, in the range from 10 to 50 wt.%,

b) one or more thermoplastic polyurethanes in an amount of from 20 to 75 wt.%,

C) one or more isocyanates in an amount of from 0.5 to 25 wt.%,

g) one or more compounds having antiadhesive action and dispersing auxiliary funds, in the amount of from 0.5 to 15 wt.%,

the total content of components a)to g) is at least 90 wt.%, preferably at least 95 wt.%, in terms of the mass technological additives.

Components of technological additives distributed almost homogeneous.

a) Hydrophobizated metal oxide particles

Under gidrofobizirovannym metal oxide particles according to the present invention refers to hydrophobizated at least partially aggregated metal oxide particles selected from the group comprising aluminum oxide, silicon dioxide and mixtures of these metal oxides. Silicon dioxide should be considered as the metal oxide. The term "mixture" refers to a physical mixture and a chemical mixture in which metal components are mixed at the molecular level.

Under "gidrofobizirovannym metal oxide particles" podrazumen who are such, obtained by reaction of the reactive groups present on the surface dehydrophenylalanine metal oxide particles, for example hydroxyl groups, with a surface modifier.

The term "aggregated" means that these primary particles, which are the source formed by the emergence of dehydrophenylalanine metal oxide particles, in the course of further reaction is firmly connected with the formation of three-dimensional mesh structure. Such linkages unlike agglomerates more impossible to break into conventional dispersing equipment.

The expression "at least partially aggregated" indicates that the presence of aggregates is a factor of essential importance for the invention. Share units preferably should be high compared with the share of separate individual particles, i.e. at least 80% of the hydrophobized metal oxide particles should be presented in the form of aggregates, respectively, of the particles of metal oxide must be fully represented in aggregated form. The proportion between the unit and separate the individual particle can be determined, for example, through a quantitative analysis of the images obtained by transmission electron microscopy (TEM).

Hydrophobizated metal oxide particles, when they presented the t particles of silicon dioxide, presented in an amorphous form, metal oxide particles, when they are aluminium oxide particles represented in crystalline form, and metal oxide particles, when it comes to mixtures of oxides represented depending on which of the components of a mixture of oxides prevails in it, in amorphous or crystalline form.

As surface modifiers can be used, for example, silanes individually or as a mixture. As their examples include the following:

- organosilane (RO)3Si(CnH2n+1), where R is alkyl, such as methyl, ethyl, n-propyl, isopropyl, butyl, and n denotes a number from 1 to 20;

- organosilane (R1)x(RO)ySi(CnH2n+1), where R is alkyl, such as methyl, ethyl, n-propyl, isopropyl, butyl, R1denotes alkyl, such as methyl, ethyl, n-propyl, isopropyl, butyl, cycloalkyl, n denotes a number from 1 to 20, the sum of x+y=3, x denotes the number 1 or 2, and y denotes the number 1 or 2;

- halogenosilanes X3Si(CnH2n+1), where X denotes Cl, Br, and n denotes a number from 1 to 20;

- halogenosilanes X2(R)Si(CnH2n+1), where X denotes Cl, Br, R denotes alkyl, such as methyl, ethyl, n-propyl, isopropyl, butyl, cycloalkyl, and n denotes a number from 1 to 20;

- halogenosilanes X(R)2Si(CnHn+1 ), where X denotes Cl, Br, R denotes alkyl, such as methyl, ethyl, n-propyl, isopropyl, butyl, cycloalkyl, and n denotes a number from 1 to 20;

- organosilane (RO)3Si(CH2)m-R1where R denotes an alkyl, such as methyl, ethyl, propyl, m denotes a number from 0.1 to 20, R1denotes methyl, aryl, such as-C6H5substituted phenyl residues, C4F9, OCF2-CHF-CF3C6F13, OCF2CHF2, Sx-(CH2)3Si(OR)3;

- organosilane (R2)x(RO)ySi(CH2)m-R1where R1denotes methyl, aryl, such as C6H5substituted phenyl residues, C4F9, OCF2-CHF-CF3C6F13, OCF2CHF2, Sx-(CH2)3Si(OR)3, SH, NR3R4R5where R3represents alkyl, aryl, R4represents H, alkyl, aryl, and R5represents H, alkyl, aryl, benzyl, C2H4NR6R7where R6represents H, alkyl, and R7represents H, alkyl, R2denotes alkyl, the sum of x+y=3, x denotes the number 1 or 2, y represents the number 1 or 2, and m denotes a number from 0.1 to 20;

- halogenosilanes X3Si(CH2)m-R, where X denotes Cl, Br, R denotes methyl, aryl, such as C6H5substituted phenyl OS is atki, C4F9, OCF2-CHF-CF3C6F13, O-CF2-CHF2, Sx-(CH2)3Si(OR1)3where R1represents methyl, ethyl, propyl, butyl, and x denotes the number 1 or 2, SH, a, m denotes a number from 0.1 to 20;

- halogenosilanes R1X2Si(CH2)mR2where X denotes Cl, Br, R1denotes alkyl, such as methyl, ethyl, propyl, R2denotes methyl, aryl, such as C6H5substituted phenyl residues, C4F9, OCF2-CHF-CF3C6F13, O-CF2-CHF2, -OOC(CH3)C=CH2-Sx-(CH2)3Si(OR3)3where R3represents methyl, ethyl, propyl, butyl, and x denotes the number 1 or 2, SH, a, m denotes a number from 0.1 to 20;

- halogenosilanes R12XSi(CH2)mR2where X denotes Cl, Br, R1denotes alkyl, such as methyl, ethyl, propyl, R2denotes methyl, aryl, such as C6H5substituted phenyl residues, C4F9, OCF2-CHF-CF3C6F13, O-CF2-CHF2-Sx-(CH2)3Si(OR3)3where R3represents methyl, ethyl, propyl, butyl, and x denotes the number 1 or 2, SH, a, m denotes a number from 0.1 to 20;

- silazane R2R12SiNHSiR12R2where R1, R 2denote alkyl, vinyl, aryl;

- circular polysiloxane D3, D4, D5, and their homologues, where D3, D4 and D5 refers to cyclic polysiloxanes with 3, 4 or 5 units of the type-O-Si(CH3)2for example, D4 is octamethylcyclotetrasiloxane;

- polysiloxane, respectively silicone (silicone) oil type Y-O-[(R1R2SiO)m-(R3R4SiOn)]u-Y, where R1, R2, R3, R4independently of one another denote alkyl, such as CnH2n+1where n denotes a number from 1 to 20, aryl, such as phenyl residues and substituted phenyl residues, (CH2)n-NH2, N, Y denotes CH3, H, CnH2n+1where n denotes a number from 2 to 20, Si(CH3)3Si(CH3)2H, Si(CH3)2OH, Si(CH3)2(OCH3), Si(CH3)2(CnH2n+1), where n

denotes a number from 2 to 20, m represents the number 0, 1, 2, 3, ..., ∝,

preferably 0, 1, 2, 3, ..., 100000, n denotes the number 0, 1, 2, 3, ..., ∝,

preferably 0, 1, 2, 3, ..., 100000, and u denotes the number of 0, 1, 2, 3, ..., ∝,

preferably 0, 1, 2, 3, ..., 100000.

As an example, commercially available products can be called oil RHODORSIL® OILS of the 47 V 50, 47 V 100, 47 V 300, 47 350 V, 47 V 500, 47 V 1000, silicone oil (Wacker Silicon Fluids AK 0,65, AK 10, AK 20, AK 35, AK 50, AK 100, AK 150, AK 200, AK 350, AK 500, 1000 AK, AK 2000, AK 5000, AK 10000, AK 12500, AK 20000, AK 30000, AK 60000,100000 AK, AK 300000, AK 500000, AK 1000000 or Dow Corning® 200 fluid.

As modifiers of the surface it is preferable to use such, the application of which on the surface modified them hydrophobized metal oxide particles are present/present group/group

,and/or

The detection of such groups is possible by spectroscopic and known to experts in this field.

As particularly suitable hydrophobized metal oxide particles should be considered such, received pyrogenic methods. These include the flaming flame hydrolysis and oxidation. While oxidizable and/or hydrolyzable source of the substance oxidized, respectively hydrolyzing usually in a hydrogen-oxygen flame. As starting substances for processing pyrogenic methods you can use organic and inorganic substances. Particularly suitable for this aluminum chloride and silicon tetrachloride.

Received by such metal oxide particles are virtually non-porous and have a surface free hydroxyl group.

At a later stage such metal oxide particles to give them their hydrophobic properties is subjected, as described above, partial or complete entries batch is Yu with a surface modifier. The degree of surface modification can be characterized by such parameters as the methanol wettability or the density of OH groups. Methods of determining these parameters.

According to the present invention as the preferred proven high density of OH groups on the surface of the hydrophobized metal oxide particles constituting not more than 1.0 IT/nm2(definition of reaction with lithium aluminum hydride according J.Mathias and G.Wannemacher, Journal of Colloid and Interface Science 125, 1988).

The most suitable hydrophobizated aggregated particles of silica pyrogenic origin in the form of powders or granules. In the following table 1 shows examples of such powders, which are produced and supplied to the market under the trade names AEROSIL® types R (firm Evonik Degussa).

Table 1
Hydrophobizated particles of silicon dioxide
The type of powder AEROSIL®BET-surfacea)[m2/g]Losses during dryingb)[wt.%]PHC)The carbon content [wt.%]
R 972110±200,53,6-4,40,6-1,2
R 974170±20<0,53.7 to 4.70,7-1,3
R 104150±25->4,01,0-2,0
R 106250±30->3,71,5-3,0
R 202100±20<0,54,0-6,03,5-5,0
R 805150±25<0,53,5-5,54,5-6,5
R 812260±30<0,55,5-7,52,0-3,0
R 816190±20<1,04,0-5,50,9-1,8
R 7200150±25 <1,54,0-6,04.5 to 6.5
R 8200160±25<0,5>5,02,0-4,0
R 9200170±20<1,53,0-5,00,7-1,3
Note: a) determine in accordance with DIN 66131; b) determine in accordance with DIN/IS0787/2, ASTM D 280, JIS K 5101/21; C) determine in accordance with DIN/IS0787/9, ASTM D 1208, JIS K 5101/24, in a mixture of methanol and water in the ratio 1:1 (volume fraction).

According to the invention the proportion of hydrophobized metal oxide particles is from 10 to 50 wt.%, preferably from 20 to 40 wt.%, in terms of the mass technological additives.

Due to the presence of moisture-sensitive isocyanate proposed in the invention process additive relative water content and hydrophobized metal oxide particles should be as low as possible. Usually the relative water content should be less than 1 wt.%, optimally less than 0.5 wt.%, in each case, calculated on the weight of processing AIDS.

The apparent density of the used powder has substantially the th values. You can use powders additionally compacted or structurally modified types. Structural modification may consist in the mechanical effect on the powder by possible subsequent grinding. For structural modification can be used, for example, a ball mill or operating in a ball mill. For subsequent grinding can be used, for example, pneumatic jet mill, toothed-disc mill or pin centrifugal mill.

The use of powders additionally compacted or structurally modified types provides a particularly high processability. However, in the proposed invention the technological additive can also be used usually less expensive unconsolidated hydrophobizated metal oxide particles. Their apparent density is typically about 50 g/l

b) a Thermoplastic polyurethane

For use in the composition proposed in the invention of technological additives in principle suitable all well-known specialists thermoplastic polyurethanes.

Usually they are produced by interaction between a diisocyanate, a complex of the polyester with terminal OH-groups or polyether with terminal OH-groups and one or more compounds having the properties of extension of the ETUI.

As polyesters typically use linear polyesters with an average molecular mass (Mnin the range from 500 to 10000, preferably from 700 to 5000, particularly preferably from 800 to 4000.

Polyesters obtained by esterification of one or more glycols and their interaction with one or more dicarboxylic acids or their anhydrides. When dicarboxylic acids may be aliphatic, cycloaliphatic or aromatic.

As examples of dicarboxylic acids suitable for the production of polyesters, can be called succinic acid, glutaric acid, adipic acid, timelineview acid, azelaic acid, sabotinova acid, dodecadienol acid, isophthalic acid, terephthalic acid, cyclohexanecarbonyl acid.

As an example, glycols suitable for the production of polyesters include ethylene glycol, 1,2-propandiol, 1,3-propandiol, 1,3-butanediol, 1,4-butanediol, 1,5-pentanediol, 1,6-hexanediol, 2,2-dimethyl-1,3-propandiol, 1,4-cyclohexanedimethanol, geometallurgical, dodecanethiol.

Polyethers with terminal OH-groups are given by the interaction of the diol or polyol, mainly ALCALDIA or glycol, with simple ether containing alkalinity with 2-6 carbon atoms, typically ethylene is xed.

As examples of chain extenders suitable for thermoplastic polyurethanes, can be called aliphatic glycols having 2-10 carbon atoms, such as ethylene glycol, diethylene glycol, propylene glycol, dipropyleneglycol, 1,4-butanediol, 1,6-hexanediol, 1,3-butanediol, 1,5-pentanediol, 1,4-cyclohexanedimethanol, neopentylglycol.

The third component when obtaining thermoplastic polyurethane is isocyanate. As isocyanates can be used aromatic, aliphatic, cycloaliphatic and/or analiticheskie isocyanates, preferably diisocyanates, for example, 2,2'-diphenylmethanediisocyanate, 2,4'-diphenylmethanediisocyanate, 4,4'-diphenylmethanediisocyanate (MDI), 1,5-naphthylenediisocyanate (NDI), 2,4-toluenediisocyanate, 2,6-toluenediisocyanate (TDI), diphenylmethanediisocyanate, 3,3'-dimethyldiphenylamine, 1,2-diphenylmethanediisocyanate, delete the entry, trimethylindolenine, tetramethyldisilane, pentamethyldisiloxane, hexamethylenediisocyanate, heptamethylnonane, octamethyltrisiloxane, 2-methylpentanediol-1,5-diisocyanate, 2-ethylbutane-1,4-diisocyanate, pentamethylene-1,5-diisocyanate, butylene-1,4-diisocyanate, 1-isocyanato-3,3,5-trimethyl-5-isocyanatomethyl (isophorondiisocyanate, IPDI), 1,4-bis-(isocyanatomethyl)cyclohexane, 1,3-bis-(isocyanatomethyl)cyclohexane, 1,4-cyclohex antisocial, 1-methyl-2,4-cyclohexadiene, 1-methyl-2,6-dicyclohexylmethane, 4,4'-dicyclohexylmethane (H12-MDI), 2,4'-dicyclohexylmethane and/or 2,2'-dicyclohexylmethane.

It is preferable to use 2,2'-diphenylmethanediisocyanate, 2,4'-diphenylmethanediisocyanate, 4,4'-diphenylmethanediisocyanate, 1,5-naphthylenediisocyanate, 2,4-toluenediisocyanate, 2,6-toluenediisocyanate, hexamethylenediisocyanate and/or IPDI.

Along with thermoplastic polyurethanes based on complex and polyether proposed in the invention process additive can also be present in the polyurethane-based polycarbonates. Such polyurethanes can be obtained by an interaction between diisocyanates and polycarbonates with terminal OH-groups in the presence of chain extension.

As an example of a commercially available thermoplastic polyurethanes can be called polyurethanes types Desmopan® from Bayer, polyurethanes types Estane® company Lubrizol or polyurethanes types Elastollan® BASF.

According to the invention the relative content of thermoplastic polyurethane is from 20 to 75 wt.%, preferably from 30 to 60 wt.%, particularly preferably from 40 to 50 wt.%, in each case, calculated on the weight of processing AIDS.

b) Isocyanate

Proposed in the invention process additive can in order to contain and aromatic, and aliphatic isocyanates. In the preferred embodiment, it is about an aliphatic or aromatic diisocyanates and aliphatic or aromatic triisocyanate. As examples of such isocyanates can be called 4,4'-methylene-bis-phenylisocyanate (MDI), m-xylylenediisocyanate, phenylene-1,4-diisocyanate, naphthalene-1,5-diisocyanate, difenilmetana-3,3'-dimethoxy-4,4'-diisocyanate, colorvision (TDI) or aliphatic diisocyanates, such as isophoronediisocyanate (IPDI), 4,4'-dicyclohexylmethane (H12-MDI), hexamethylenediisocyanate, 1,4-cyclohexyldiamine (CHDI), decane-1,10-diisocyanate and dicyclohexylmethane-4,4'-diisocyanate. It is preferable to use 4,4'-methylene-bis-phenylisocyanate (DHS) or modified uretonimine DHS. As an example of commercially available isocyanates can be called the product Desmodur® CD Bayer or product Suprasec 2020 firm Huntsman.

The relative content of isocyanate in the proposed in the invention process additive is from 0.5 to 25 wt.%, preferably from 5 to 22 wt.%, particularly preferably 10 to 20 wt.%, in each case, calculated on the weight of processing AIDS.

d) Release and dispersion tool

Proposed in the invention process additive contains next release and dispersing agent. This means slugotskaya friction of the inner and outer lubricant and improves the rheological properties (fluidity) in the process of obtaining technological additives. Additionally, it reduces or prevents adhesion to the surrounding material. In addition, it serves as a dispersant for the hydrophobized metal oxide particles.

In a preferred embodiment, the anti-adhesion and dispersing agent can be selected from the group including esters and amides of aliphatic carboxylic acids and their salts, in each case with 10-45 carbon atoms.

It should be called a derivative of fatty acids, such as esters of stearic acid, amides of fatty acids, amides such as stearic acid, and amidoamine fatty acids, such as staranimolinar. As typical examples of when this can be called methylene-bis-lauramide, methylene-bis-myristamide, methylene-bis-palmitate, methylene-bis-stearamide, ethylene-bis-beginnig, methylene-bis-oleamide, ethylene-bis-lauramide, ethylene-bis-myristamide, ethylene-bis-palmitate, ethylene-bis-stearamide, ethylene-bis-beginnig, ethylene-bis-MonthName and ethylene-bis-oleamide.

In the claimed invention was, in particular, it was found that the use of fatty acid amides and hydrophobized obtained by pyrogenic particles of silicon dioxide leads to particularly high stabilization of the melt in obtaining technological additives and when it is used in the processing of thermoplastic polyurethanes.

As antiage the ion and dispersing means you can also use substances, containing the block copolymer of the complex polyester and polysiloxane, preferably triple-a block copolymer type (complex polyester)-(polysiloxane)-(complex polyester). Such copolymers include, for example, ternary block copolymers of the type (polycaprolactone)-(polydimethylsiloxane)-(polycaprolactone). As one example of a commercially available representatives of such copolymers can be called the product TEGOMER® H-Si 6440P company Evonik Goldschmidt.

The relative content of release and dispersing funds proposed in the invention process additive is from 0.5 to 15 wt.%, preferably from 2 to 12.5 wt.%, particularly preferably 5 to 10 wt.%, in each case, calculated on the weight of processing AIDS.

Proposed in the invention process additive is a universal technological additive for thermoplastic polyurethanes, i.e. hydrophobizated metal oxide particles, thermoplastic polyurethane, isocyanate and release and dispersion tool can be combined with each other in any way.

In one of the preferred embodiments of the invention offer its technological additive contains:

a) hydrophobizated at least partially aggregated pyrogenic particles of silicon dioxide in the bundle is e from 20 to 40 wt.%,

b) one or more thermoplastic polyurethanes in an amount of from 30 to 60 wt.%,

b) isocyanate in an amount of 5 to 20 wt.%,

d) release and dispersing agent in an amount of 5 to 10 wt.%,

in each case, calculated on the weight of processing AIDS, with the share of these components have at least 90 wt.%, preferably at least 95 wt.%, in terms of the whole mass of technological additives or she consists exclusively of listed components. It is possible, optionally contained in a commercially available thermoplastic polymers substances should be considered as related to thermoplastic polymer.

The next object of the invention is a method for processing AIDS, namely, that the mixture of molten thermoplastic polyurethane and hydrophobized metal oxide particles, isocyanate and antiadhesive and dispersing means is metered into the extruder or device for injection molding. The components proposed in the invention process additives can be dosed together or separately.

In the preferred embodiment, it is possible to use an extruder. By dosing the components of technological additives preferably first blended thermoplastic polyurethane and hydrophoby the new metal oxide particles, then heat the resulting mixture to a temperature at which thermoplastic polyurethane is presented in molten form, and later to dose in the mixture in the extruder isocyanate and antiadhesive and dispersing agent. Received technological additive is then cooled and granularit or cooled by granulation.

As the extruder can be used known in the art devices of this type. The melt temperature is usually from 150 to 240°C, mainly from 180 to 230°C.

In the implementation proposed in the invention method, thermoplastic polyurethane can be used in the form of granulates or pellets (tablets), preferably in the form of a granulate. Hydrophobizated metal oxide particles can be used in the form of a powder or granulate.

The application of the proposed invention in technological additives in the processing of thermoplastic polyurethanes increases the stability of the melt, to accelerate crystallization, to reduce friction and to increase the molecular weight. Therefore, another object of the invention is the application of the proposed invention in technological additives in the processing of thermoplastic polyurethanes in films, thin sheets, hoses, cable sheathing, articles obtained by injection molding or fiber.

We offer the technological invention additive is most suitable for manufacturing self-supporting blown or blown film. The definition of "self-supporting" means that when making a film requires no supporting element.

Accordingly another object of the invention is a method of manufacturing a self-supporting film, which is metered into the extruder a mixture of a thermoplastic polyurethane and proposed in the invention process additives used in quantities of from 0.5 to 35 wt.%, preferably from 1 to 20 wt.%, particularly preferably from 5 to 15 wt.%, in each case, calculated on the total amount of thermoplastic polyurethane, the mixture is melted and ekstragiruyut through a die for the extrusion of films with obtaining film.

Examples

A) Receiving proposed in the invention of technological additives

Raw materials:

- AEROSIL® R974, the company Evonik Degussa;

- Estane® 58271: is a TPU-based complex aromatic polyester with a shore hardness 85A, firm Lubnzol;

- Estane® 58300: is a TPU based on aromatic polyether with a shore hardness A, the company Lubrizol;

- Desmopan® W85085A: represents an aliphatic TPU-based polyols with complex and simple polyester groups, the firm Voeg MaterialScience AG;

- Desmodur® CD: modified difenilmetana-4,4'-diisocyanate, Bayer MaterialScience AG;

- Vestanat® 1890-100: cycloaliphatic polyisocyanate based on IPDI, the company Evonik Dgussa;

- Suprasec®: DHS, firm Huntsman;

- CRODA ER: erucamide;

- CRODA EBO: ethylene-bis-oleamide;

- Tegomer® H-Si 6440P: block copolymer type (complex polyester)-(polysiloxane)-(complex polyester), the company Evonik Goldschmidt;

- Acrawax® E: ethylene-bis-stearamide, the company Lonza.

Example 1

A mixture of the product Estane® 58271 in the amount of 50 wt. parts and product AEROSIL® R974 in the amount of 30 wt. parts are batched in dvuhseriynyy extruder operating at a speed of screw rotation of 600 rpm and at a temperature in the range from 160 to 200°C. thereafter, dispense the product Suprasec® in the amount of 20 wt. parts and erucamide/ethylene-bis-oleamide in the amount of 10 wt. parts. The mixture is then granularit.

Examples 2-4

In these examples operate in a similar way. The raw materials and the quantities in which they are used are listed below in table 2.

Table 2
Technological additives raw materials and the quantities used
Example1234
TPUEstane® 58271Estane® 58271Estane® 58300Desmopan® W85085A
Qty wt.%50404030
Hydrophobized. metal oxide particlesAEROSIL® R974AEROSIL® R974AEROSIL® R974AEROSIL® R974
Qty wt.%30303040
IsocyanateMDIMDIDesmodur® CDVestanat® 1890-100
Qty wt.%10202028
Release and dispersion toolerucamide/EVOerucamide/EVOEBO/Tegomer® H-Si 6440PEBO Acrawax E
Qty wt.%1010102

B) the Manufacture of self-supporting blown or Rukan the x films

Example 5

Thermoplastic polyurethane Estane® 58447 and proposed in the invention process additive of example 1 in an amount of 10 wt. parts in terms of a number of thermoplastic polyurethane is melted in the extruder and ekstragiruyut through a die for the extrusion of films to obtain a tubular film.

Example 6

In this example, work similarly to example 5, but instead of the polyurethane Estane® 58447 use polyurethane Desmopan® 786E Bayer.

Example 7

In this example, work similarly to example 5, but instead of the polyurethane Estane® 58447 use polyurethane Desmopan® 3660D Bayer.

Specialists know that used in examples 5-7 thermoplastic polyurethanes only difficult or not suitable for processing in a self-supporting film. When applied as proposed in the invention process of the additive of example 1, this film manages to make all three examples.

In the presence of the proposed invention technological additives can also choose about 15°C higher temperature processing, which can reduce or prevent the dripping of melt extrusion heads, as well as to reduce or avoid the presence of nerasplativshegosya thermoplastic polymer. The presence of the proposed invention technological additives results in the increase of elongation (ultimate tensile strength) in combination with a decrease in elongation.

1. Technological additive for thermoplastic polyurethanes containing:
a) hydrophobizated at least partially aggregated metal oxide particles of pyrogenic origin, selected from the group comprising aluminum oxide, silicon dioxide and mixtures of these metal oxides, in the range from 10 to 50 wt.%,
b) one or more thermoplastic polyurethanes in an amount of from 20 to 75 wt.%
C) one or more isocyanates in an amount of from 0.5 to 25 wt.%,
g) one or more compounds having antiadhesive action and dispersing auxiliary funds, in the amount of from 0.5 to 15 wt.%, selected from the group comprising amides of fatty acids and a block copolymer of a complex of the polyester and polysiloxane, the total content of components a)to d) is 100 wt.% in terms of the mass technological additives.

2. Technological additive according to claim 1, characterized in that on the surface hydrophobized metal oxide particles are present/present group/group
,and/or

3. Technological additive according to claim 1, characterized in that the density of OH groups on the surface of the hydrophobized metal oxide particles is not more than 1 OH/nm2.

4. The way of gaining the technological additive according to one of items 1 to 3, characterized in that the mixture of molten thermoplastic polyurethane and hydrophobized metal oxide particles, isocyanate and antiadhesive and dispersing means is metered into the extruder and the resulting technological additive is then cooled and granularit or cooled by granulation.

5. The use of processing AIDS according to one of items 1 to 3 in the processing of thermoplastic polyurethanes in the film.

6. A method of manufacturing a self-supporting film, characterized in that the extruder is dosed blend of thermoplastic polyurethane and technological additives according to one of items 1 to 3, are used in quantities of from 0.5 to 35 wt.% in terms of the total number of thermoplastic polyurethane, the mixture is melted and ekstragiruyut through a die for the extrusion of films with obtaining film.



 

Same patents:

FIELD: chemistry.

SUBSTANCE: invention relates to modified with polysiloxane polyhydroxypolyurethane resins. Claimed is polyhydroxypolyurethane resin, modified with polysiloxane, characterised by the fact that it is obtained by interaction of polysiloxane compound with five-membered cyclic carbonate of formula (1) where, A stands for or and amine compound, and content of polysiloxane segments in resin molecule corresponds from 1 to 7 wt %. Also claimed is method of obtaining said resin, versions of claimed resin compositions, thermally sensitive recording material, artificial leather, leather-like material from thermoplastic polyolefin resin, material for sealant processing and sealant, in which said resin is used.

EFFECT: claimed resin can be obtained by environmentally friendly methods and possesses excellent exploitation characteristics (resistance to abrasive wearing, chemical and heat resistance, etc).

24 cl, 3 dwg, 10 tbl, 26 ex

FIELD: chemistry.

SUBSTANCE: claimed invention relates to polyurethane composition for obtaining holographic media. Claimed composition includes: A) polyisocyanate component; B) isocyanate-reactionable component, which includes, at least, 50 wt % calculated per the total mixtute of B) polyetherpolyols B1) with number average molecular weights higher than 1000 g/mol, which have refraction index nD20<1.55 and contain one or several oxyalkyl links of formulae (I)-(III): -CH2-CH2-O- (I), -CH2-CH(R)-O- (II), -CH2-CH2-CH2O- (III), with R being alkyl or aryl residue, which can be substituted or broken with heteroatoms; C) compounds, which have refraction index nD20>1.55 and contain groups, under action of actinic radiation reacting with ethylene-unsaturated compounds with polymerisation (radiation-solidified groups), and do not contain NCO-groups themselves; D) radical stabilisers; E) photoinitiators; F) catalysts if necessary; G) auxiliary substances and additives if necessary. Also described are: method of obtaining media for recording visual holograms, medium for recording visual holograms, application of such medium and method of hologram recording.

EFFECT: obtaining polyurethane composition, providing better contrast ratio and improved hologram brightness without impairing compatibility of matrix polymer and recording monomer.

11 cl, 2 dwg, 7 ex

FIELD: chemistry.

SUBSTANCE: invention relates to modified with polysiloxane polyhydroxypolyurethane resins. Claimed is polyhydroxypolyurethane resin, modified with polysiloxane, characterised by the fact that it is obtained in reaction between five-membered cyclic carbonate and polysiloxane compound, modified with amine, and content of polysiloxane segments in resin molecule constitutes from 1 to 75 wt %. Also claimed is method of its obtaining, versions of claimed resin compositions, thermally sensitive recording material, artificial leather, leather-like material from thermoplastic polyolefin resin, material for sealant processing and sealant, in which said resin is used.

EFFECT: claimed resin can be obtained by environmentally friendly methods and possesses excellent exploitation characteristics (resistance to abrasive wearing, chemical and heat resistance, antistatic properties, etc).

23 cl, 3 dwg, 8 tbl, 10 ex

FIELD: chemistry.

SUBSTANCE: composition contains a hydroxyl-containing compound - oxypropylethylenediamine and an ether based on propylene oxide, a catalyst - dimethylethanolamine, a foaming agent - water, a foam regulator, polyisocyanate and a fire retardant, wherein the foam regulator is a surfactant based on non-hydrolysable silica gel copolymer; the composition further contains an ether based on ethylene oxide with ethylene glycol, a fire retardant in form of trichloropropyl phosphate and a mixture of catalysts - triethylenediamine/dipropylene glycol, pentamethyldiethylenetriamine, with the following ratio of components, wt%: oxypropylethylenediamine 7-12; ether based on propylene oxide 7-9; ether based on ethylene oxide with ethylene glycol 7-9; dimethylethanolamine 1-1,2; triethylenediamine/dipropylene glycol 1.3-1.5; pentamethyldiethylenetriamine 2.8-3; trichloropropyl phosphate 10-12; water 5.2-5.4; non-hydrolysable silica gel copolymer 1.1-1.2; polyisocyanate 50.1-53.1.

EFFECT: improved physical and mechanical properties of the rigid sputtered polyurethane foam, low density, heat-conductivity, water absorption and start time which is sufficient to form a quality foamed article with uniform density in the volume.

2 tbl

FIELD: chemistry.

SUBSTANCE: composition contains a polyether polyol - oxypropylated glycerine, foaming agent - water, catalyst, fire retardant, foam stabiliser, polyisocyanate and additionally contains polyether polyols: polyether obtained by oxypropylation of glycerine and saccharose, polyether obtained by polymerising ethylene oxide with ethylene glycol; foam stabiliser - non-hydrolysable silicone surfactant; catalyst - pentamethyldiethylenetriamine; fire retardant - trichloropropyl phosphate, with the following ratio of components, wt %: oxypropylated glycerine 12.0-18.0; polyether obtained by oxypropylation of glycerine and saccharose 10.0-14.0; polyether obtained by polymerising ethylene oxide with ethylene glycol 1.0-2.0; water 2.0-4.0; pentamethyldiethylenetriamine 0.1-0.5; non-hydrolysable silicone surfactant 0.5-1.0; trichloropropyl phosphate 8.0-10.0; polyisocyanate - the balance.

EFFECT: obtaining an environmentally safe fire-resistant composition, which provides improved strength properties of the finished rigid polyurethane and the required density level according to requirements for heat-insulation materials, water absorption while maintaining an optimum start time sufficient to mould a foamed article with uniform density in the volume and a good outer surface.

2 tbl

FIELD: chemistry.

SUBSTANCE: invention can be used for manufacturing coatings, drums, rollers and wheels. Method of obtaining antistatic or electroconductive components from reactoplastic polyurethanes includes admixing carbon nanotubes to compounds (B), containing groups, active with respect to NCO-groups, and to polyisocyanates (A), mixing components, obtained at the first stage, application of mixture on substrate or into mould and its hardening.

EFFECT: invention makes it possible to obtain electroconductive or antistatic polyurethanes with high electroconductivity and homogeneous distribution of carbon nanotubes, the process being carried out with constant viscosity of reaction mixture.

3 cl, 3 ex

FIELD: physics, optics.

SUBSTANCE: present invention relates to a photopolymer composition for producing holographic media, which contains three-dimensionally cross-linked organic polymers (A) or precursors thereof as a matrix, and compounds (B), which contain groups which, when exposed to actinic radiation, react with unsaturated compounds with ethylene fragments to form polymers (radiation-curable groups), and which are dissolved in said matrix or are located therein in a distributed state, as well as a component (C) which is at least one photoinitiator, wherein density of the polymeric cross-linking of the organic polymer, expressed through average molecular weight MS of two segments connected by polymer bridges, is a value ranging from 2685 g/mol to 55000 g/mol. The invention also describes a medium which is suitable for recording visual holograms, use of said medium and a method for exposure thereof.

EFFECT: producing photopolymer compositions for use as holographic media, which can be produced without subsequent thermal or wet chemical treatment, and use of which enables to obtain holograms which are colourless after exposure, with high diffraction efficiency and high brightness.

13 cl, 3 dwg, 4 tbl

FIELD: chemistry.

SUBSTANCE: claimed invention relates to polyurethane composition for production of holographic media. Composition contains: (A) polyisocyanate component, which contains at least one polyurethane prepolymer with terminal NCO-groups exclusively on base of oligomeric or polymeric dysfunctional compounds, reaction-able with respect to isocyanates, with average molecular weights from 200 to 10000 g/mole, in which NCO-groups are bound with primary residues, (B) polymers, reaction-able with respect to isocyanates, (C) compounds, which contain groups, which when exposed to actinic irradiation react with ethylene-unsaturated compounds with polymerisation (radiation - solidified groups), and themselves do not contain NCO-groups, (D) stabilisers of radicals and (E) photoinitiators, with compounds, applied in component C), having refractive index nD20>1.55. Also described are: method of producing medium of recording of visual holograms, application of such medium and method of hologram recording.

EFFECT: obtaining novel polyurethane composition, in which good compatibility of polymeric matrix with recording monomer and other components, contained in composition is ensured, which leads to improvement of hologram brightness.

12 cl, 2 dwg, 7 ex

FIELD: chemistry.

SUBSTANCE: invention relates to composite abrasives and can be used in polishing or finishing metal surfaces in a wide range. The surface treatment article contains an organic matrix and binder. The binder contains a reaction product of a block polyurethane prepolymer and a mixture of aromatic amines. The aromatic amines include polymethylene polyanilines, characterised by functionality equal to or greater than 4.

EFFECT: invention enables surface treatment without contamination, improves product longevity and improves heat resistance.

15 cl, 2 ex

FIELD: chemistry.

SUBSTANCE: invention relates to a refractory composition for making casting moulds. The composition contains (a) at least 85 pts.wt refractory material, (b) 0.5-10 pts.wt binder and (c) manganese cyclopentadienyl tricarbonyl, a derivative thereof, in amount of about 0.0005 pts.wt to about 4 pts.wt, where the parts by weight are given with respect to 100 pts.wt of the refractory composition. Also disclosed are methods of making a casting mould and a method of moulding metal parts.

EFFECT: invention enables to make casting moulds with improved exothermic properties.

13 cl, 4 tbl, 2 ex

FIELD: chemistry.

SUBSTANCE: polymer composition contains a polycarbonate polymer (component A), coated hexaboride particles (component B) as well as metal nitride particles (component C). The hexaboride particles consist of particles of a hexaboride of at least one element selected from a group consisting of Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Sr and Ca and a coating layer containing a metal oxide. The composition contains particles of a nitride of a metal selected from a group consisting of Ti, Zr, Hf, V, Nb and Ta. The composition is obtained by mixing in molten state coated particles of hexaboride, metal nitride and a polymer dispersant with a polycarbonate polymer.

EFFECT: invention provides the article with efficient heat-reflecting properties, excellent transparency and water-resistance.

13 cl, 1 dwg, 1 tbl, 5 ex

FIELD: chemistry.

SUBSTANCE: method of producing hybrid organic-inorganic material comprises the following steps: (a) peptisation of material of inorganic particles selected from oxides, sulphides, sulphates, phosphates, arsenides and arsenates of noble metals and mixtures thereof, in anhydrous sulphuric acid or hydrogen fluoride, to obtain a solution of material of inorganic particles; (b) fractionation of the solution obtained at step (a) to obtain a solution of inorganic particles having particle size ranging from 5 nm to 100 nm; (c) mixing the fractionated solution obtained at step (b) with an organic solvent; (d) reacting the mixture from step (c) with a solution of a reactive organic monomer with silane functional groups in an organic solvent.

EFFECT: method of obtaining hybrid organic-inorganic monomer material enables to obtain monomer materials which combine desired products of material of inorganic particles and an organic monomer, in addition to unique nanoparticle properties.

15 cl

FIELD: chemistry.

SUBSTANCE: in order to obtain layered nanoparticles, layered material selected from clay and boehmite is mixed with a separating agent selected from diols. The separated layered material reacts with a cross-linking agent in the presence of water and acid. The cross-linking agent has formula RaXY4-a, in which R is a hydrogen atom or a hydrocarbon radical containing 1-40 carbon atoms, and groups R can be identical or different, X is a silicon, zirconium or titanium atom, Y is an alkoxy group containing 1-12 carbon atoms, or a halogen, and a equals 1, 2 or 3. The obtained layered nanoparticles are separated. The loss on ignition value of the layered nanoparticles is higher than 6%, preferably higher than 12% and even more preferably higher than 16%.

EFFECT: invention increases distance between layers of layered nanoparticles meant for reinforcing polymers.

10 cl, 5 ex

FIELD: chemistry.

SUBSTANCE: thermoplastic mixture contains the following (in wt %): thermoplastic polymer (40-99) and silanised, silicon dioxide which is structurally modified by mechanical means and prepared by pyrogenic means (0.1-60), where dimethylsilyl and/or monomethylsilyl groups are fixed on the surface.

EFFECT: preparation of a thermoplastic mixture with improved mechanical properties.

2 cl, 3 tbl, 2 ex

FIELD: chemistry.

SUBSTANCE: hydrophobic silicon dioxide was obtained pyrogenically, by oxidation in the flame or (which is more preferentially) by hydrolysis in the flame; it contains potassium in the range from 0.000001 to 40 wt %. Silicon dioxide potassium-doped with aerosol hydrophobic can be superficially modified using one or more compounds. The method of such silicon dioxide obtaining and the silicon rubber containing the latter as filler are claimed.

EFFECT: increase of cut-growth resistance and transparency after curing of the liquid rubber mixture.

8 cl, 6 tbl, 6 ex

FIELD: chemistry.

SUBSTANCE: invention relates to composite applied for filling elastomers in coverings, glues, foam materials, tyres and construction and to method of its production. Composite represents segregated clay, held in form of column inclusions on carbonised matrix. Method of obtaining composite includes dispersing and segregating under impact of multi-layer clay shift in matrix, which contains carbonised organic material, obtaining composite precursor and its further heating at temperature from 200 to 700°C during time from 1 to 120 minutes in order to obtain held in form of column inclusions, dispersion of segregated clay in carbonised matrix.

EFFECT: obtaining composite possessing improved mechanical and thermophysical properties.

19 cl, 7 ex, 6 dwg

FIELD: chemistry.

SUBSTANCE: present invention pertains to silane binding substances, methods of making them and their use in making rubber. The invention seeks to make silane binding substances, in which the released hydrolysable groups help improve the rubber mixture and/or properties of the end product. The proposed composition contains at least, one silane binding substance for binding an elastomer and filler. The silane contains at least, one hydrolysable group, which, after mixing the silane and the elastomer and the filler, which is released, obtaining a compound which further improves process properties of the mixed composition or properties of the end rubber product, or either of the two. The silane binding substance is chosen from a group consisting of silanes, separate structures of which are presented in at least one of the following general formulae: [J-S-G1-(SiX2X3)][-Y2-(X2Si-G1-S-J)]m-X1; [X1X2X3Si-G2-Sx-G3-Si(X2X3)][-Y2-(X2Si)-G2-Sx-G3-(SiX1X2X3)]m-X1; [X1X2X3Si-G2-Sx-G3-Si(X2X3)][-Y2-(X2X3Si)-G2-Sx-G3-(SiX2X3)]m-X1; [(-Y2-)y/2(X23-bSi)-G'-S-J]m[(-Y2-)j/2(X23-jSi)-G2-Sx-G3-(SiX23-k)(-Y2-)k/2]n, where the subscript h independently represents an integer from 1 to 3; subscripts j and k independently represent an integer from 0 to 3, with the condition that, j+k>0; subscript m independently represents an integer from 1 to 1000; subscript n independently represents an integer from 1 to 1000; subscript x independently represents an integer from 2 to 20; X1 is independently chosen from a group of hydrolysable residue, containing Y1, -OH, -OR1 and R1C(=O)O-, in which in each case R1 independently represents any hydrocarbon fragment, obtained by removing one hydrogen atom from a hydrocarbon, containing from 1 to 20 carbon atoms. R1 contains arylgroups and any alkyl, alkenyl, arenyl or aralkyl groups with a branched straight chain; X2 and X3 are independently chosen from a group containing hydrogen, R1 and X1; G1, G2 and G3 are independently chosen from a group containing hydrocarbon fragments, obtained by removing one hydrogen atom from any of the groups given above for R1; J is independently chosen from a group containing R1C(=O)-, R1C(=S)-, R12P(=O)-, R12P(=S)-, R1S(=O)- and R1S(=O)2, where in each separate case, R1 assumes values given above; Y1 independently represents -O-G-(O-G-)pOR or -O-G-(O-G-)pOH, and Y2 independently represents -O-G-(O-G-)qO-; subscript p independently represents an integer from 1 to 100; subscript q independently represents an integer from 1 to 100; G is independently chosen from a group containing hydrocarbon fragments, obtained by removing one hydrogen atom from any of the groups given above for R1 ; and R is independently chosen from a group, where R1 assumes values given above. Proposal is also given of a method of making the proposed binding substance, elastomer composition filled with the binding substance and a method of binding the elastomer and the filler.

EFFECT: design of silane binding substances in which released hydrolysable groups help improve the rubber mixture and/or properties of the end product.

19 cl, 1 tbl, 10 ex

FIELD: structural materials.

SUBSTANCE: invention relates to structural materials based on fiber glass-filled polyolefins. The polymeric casting structural composition comprises polypropylene, polyethylene, elastomer, powder-like inorganic filling agent and fibrous filling agent wherein fiber glass dressed with organosilane is used as a fibrous filling agent showing fiber diameter 8-13 mm and characteristic ratio 25-35. Invention provides creature of polypropylene composition possessing the high impact viscosity value being both at normal and decreased temperatures, bending elasticity module, rigidity and hardness and retention of good esthetic properties. Invention can be used in automobile manufacture, railway building and furniture industry.

EFFECT: improved and valuable technical properties of composition.

5 cl, 2 tbl, 7 ex

FIELD: rubber industry.

SUBSTANCE: invention relates to high-filled silicone rubber compositions containing modified kaolin and production processes thereof. Invention provides modified kaolin-containing silicone rubber composition essentially composed of organopolysiloxane, modified kaolin, curing agent, and, optionally, additives selected from group consisting of one or several rheology modifier representatives, pigments, dyes, antitack agents, plasticizers, adhesion promoters, foaming agents, fire retardants, and drying accelerators, said composition essentially containing no enhancing extenders. Composition is obtained by mixing organopolysiloxane and modified kaolin at ambient temperature, adding curing agent to the resulting mixture, and curing it at temperature higher than ambient temperature. Thus obtained compositions are suitable to extrude profiled products from silicone, in coatings for conductors and cables, and as sealing materials in glazing operations and in construction.

EFFECT: enabled production of rubber compositions with only one extender.

10 cl, 8 tbl, 11 ex

FIELD: rubbers organic chemistry.

SUBSTANCE: invention relates to silane-modified modified oxide or silicate filling agent for rubber mixtures. Silane-modified oxide or silicate filling agent comprises at least one oxide or silicate filling agent modified with mercaptosilane of the general formula (I): (R1)3Si-R2-SH (I) wherein substitutes R1 have similar or different values and mean alkoxy-group or alkyl and wherein at least one group R1 represents alkoxy-group; R2 means hydrocarbon group with a double bond and alkylsilane chosen from hexadecyltriethoxysilane, octadecyltriethoxysilane, hexadecyltrimethoxysilane or octadecyltrimethoxysilane. Invention provides preparing silane-modified oxide or silicate filling agent that shows ability for homogenous distribution on surface and provides improved dynamic properties of rubber.

EFFECT: improved preparing method, improved and valuable properties of filling agent.

7 cl, 7 tbl, 7 ex

Polymer composition // 2519402

FIELD: chemistry.

SUBSTANCE: invention relates to chemical industry, in particular to production of rubber products, intended for application as mechanical rubber products. Polymer composition can be used for manufacturing rubber products for different household purposes, working in contact with aggressive media, at higher temperatures, and for creation of construction products together with rubbers on the base of general purpose rubbers. Polymer composition contains butadiene-nitryl rubber CKH-40, sulphur, altax, diphenylguanodine, zinc white, stearic acid, dibutylphthalate, modifier - mixture of fullerenes of fraction C50 - C92 and anti-ageing agents - acetonanyl R and diaphene FP and filling agent - mixture of technical carbon P-234 and chalk GPC.

EFFECT: elaboration of formula of polymer composition with improved technological properties, increased strength and resistance to impact of aggressive media.

2 tbl, 3 ex

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