(57) Abstract:Usage: as a structural material for the manufacture of shells audio - and video equipment, etc., the Essence of the invention: polymer composition includes a resin plant (ABS) copolymer and a polymeric additive on the basis of a copolymer of styrene (S). As SOS composition contains SOS with 20 - 60 % of methyl methacrylate or SOS with 7 - 10 % of Acrylonitrile and 43 - 50 % of methyl methacrylate in the following ratio, wt. %: ABS 94,0 - 96,5; SOS 3,5 - 6,0. table 1. The invention relates to polymeric compositions based resin plant (ABS) copolymers, which are widely used as structural materials, for example, for the manufacture of shells audio - and video equipment, computers, telephones, etc.For use in these products copolymers ABS must have a sufficiently high impact resistance and good decorative effect. Modern design requirements in some cases prefer glossy (shiny) surfaces of the front panels of the equipment. The glossiness of the surface not only gives the product a commodity, but is a valuable technical characteristics, so ICA and its destruction. However, the copolymers ABS are by nature a matte surface. To make the surface of the ABS Shine apply certain techniques.Known polymer composition comprising a copolymer ABS and polymer additive on the basis of a copolymer of styrene, which contains:
0.1 to 10% acrylate or methacrylate containing epoxy-, hydroxyl - or alkoxy-group;
20-99,9% of alkylacrylate that do not contain epoxy-, hydroxyl - or alkoxy-group;
0-79,9% other copolymerizable vinyl compounds (styrene, Acrylonitrile, methyl methacrylate and other).In known compositions is a copolymer, necessarily contains links acrylate or methacrylate functional groups of the epoxy-, hydroxyl - or alkoxy-groups, and also containing links alkylacrylate 
However, this polymer additive is not possible to get ABS with a high surface gloss and improved weather resistance.Known and other polymer composition that includes a resin plant copolymer and polymer additive on the basis of a copolymer of styrene  which have high level of impact strength and surface gloss 57-60 defined on the gloss FB-2 by comparison is like during polymerization in mass. The introduction of blockcopolymer somewhat complicates the process and copolymers of the road. This significantly degrades the technical-economic indicators of the process and increases the cost of the product. The introduction of additional quantities of rubber leads to accelerated aging of the composition, as the stability of the polymer during operation is determined mainly by the content of the unsaturated rubber.The technical result of the invention of improving the weather resistance of the composition, reducing the cost of its acquisition and expansion of the range of the original products.For this as styrene composition comprises a copolymer of styrene with 20-60% of methyl methacrylate or a copolymer of styrene with 7-10% of Acrylonitrile and 43-50% of methyl methacrylate in the following ratio, wt.Acrylonitrilebutadiene-
styrene copolymer 94,0 to 96.5
The copolymer of styrene 3,5-6,0
As components of the compositions of the invention used:
copolymers ABS, obtained by polymerization in mass, containing 6-12 wt. polybutadiene, stamps ABS M (TU 6-05-2022-86);
copolymers ABS, obtained block-suspension method, containing 6 wt. polybutadiene, ABS grades-B (TU 6-05-2037-87);
the copolymers And the copolymers of styrene and methyl methacrylate (MS), obtained by copolymerization in bulk or suspension of styrene with methyl methacrylate, taken in the ratio (80-40):(20-60), marks MS-20, MS-40 and MS-60 (GOST 12271-76);
copolymers of styrene, Acrylonitrile and methyl methacrylate (sit) obtained by copolymerization in bulk or suspension of styrene, Acrylonitrile and methyl methacrylate, taken in the ratio(50-40):(7-10):(43-50) (GOST 12271-76).The composition of the polymer-polymer compositions may include conventional additives thermal and light stabilizers, antistatic agents, dyes and pigments, and flame retardants such as brominated aromatic compounds in combination with antimony trioxide, etc. In the composition may also contain plasticizers, softeners and other additives.The composition can be prepared by mixing the components in conventional mixing equipment with subsequent granulation. However, it is possible to prepare a concentrate of the dye with the use of copolymers of styrene as a polymer base concentrate and the concentrate is then mixed with ABS.For granulation used conventional extruder-granulator.The composition was investigated on the following parameters:
the melt flow index according to GOST 11645-79;
toughness Alnoe elongation at break according to GOST 11262-80;
the heat Vika according to GOST 15088-83.The surface gloss was determined on the gloss FB-2 by comparing the reflected Shine with the standard.The weather resistance was determined according to GOST 9.708-83 by injection molding samples for modifying the color characteristics of the samples after exposure in the device IPST for 100 hours Full colour difference E and the color differences in the lightness L, the saturation S and hue T was measured by colorimeter "Spectator" when the light source S.P R I m e R 1. 47,5 kg ABS-M 0602 beyond 6-05-2022-86; 2.5 kg of copolymer MS-20 with a melt flow index (MFR) of 29.3 g/10 min, 0.1 kg of stabilizer Irganox 1076 and 0.1 kg of CA stearate loaded into the mixer heavy type (Bunbury) and mixed in the melt for 5-10 minutes at 170-180aboutS, after which the mass is fed to the extruder and granularit. Physico-mechanical properties of the resulting composition are shown in table.P R I m m e R 2. 47,5 kg ABS-M 0602 beyond 6-05-2022-86, 2.5 kg of copolymer MS-20 (MFR of 29.3 g/10 min); 0.1 kg stabilizer Irganox 1076; 0.1 kg of CA stearate download in high speed mixer and stirred for 10-15 min, the resulting mixture is fed into the hopper of twin screw extruder. The mixing is carried out at 190-240about(P is ucaut as in example 1, but as polymer additives took copolymer brand MS-40.P R I m e R 4. 40 kg of copolymer MS-20 with a melt flow index (MFR) of 30 g/10 min and 10 kg of black paste consisting of 2 kg of carbon black mark PM 100V and 8 kg of dioctylphthalate were loaded into the mixer heavy type and mixed for 5-10 minutes at 170-180aboutS, after which the mass was applied to the extruder and granulated.The obtained concentrate dye used for modification and simultaneous staining ABS directly produced in the casting process. For this 2.0 kg ABS ABS grades-M 0602 mixed with 0.1 kg of the obtained concentrate dye directly into the hopper of the molding machine; then were cast samples for testing.Physico-mechanical characteristics of the composition given in the table.P R I m e R s 5-12. Compositions were prepared and tested as in example 1, but used the ABS of different brands and various polymer additives target. The compositions and their physical and mechanical properties are given in table.For comparison, the table also gives the properties used grades of ABS, as well as the composition of the prototype (the last line).As can be seen from the table, the components of the S-plastics while maintaining the overall level of physico-mechanical characteristics; when the melt flow index of the compositions is higher than the original ABS that improves the quality of molded products. In addition, changes in color characteristics, glamour and the absolute value of the total color differences after exposure of the compositions is lower than the original ABS that says more about their high weather resistance. POLYMER COMPOSITION that includes a resin plant copolymer and polymer additive on the basis of a copolymer of styrene, characterized in that as a copolymer of styrene composition comprises a copolymer of styrene with 20
60% of methyl methacrylate or a copolymer of styrene with 7 to 10% of Acrylonitrile and 43 of 50% of methyl methacrylate in the following ratio, wt.Resin plant copolymer 94,0 96,5
The copolymer of styrene 3,5 6,0
FIELD: textile industry.
SUBSTANCE: invention relates to manufacture of nonwoven fabrics possessing sorption ability and can be used in making various-modification filters suitable for cleaning liquid media. Impregnating composition contains blend constituted by latexes based on rigid chain- and flexible chain-nature copolymers taken at ratio between 95:5 and 50:5, respectively, solid filler, and water, wherein ratio of all components is expressed as 1:(2.5-3.0):1. Composition is obtained by mixing and vibration action in resonance mode at frequency 50-150 Hz and action time 5-15 min.
EFFECT: increased aggregative stability of composition and physicomechanical properties of material with no additional components added.
2 cl, 2 tbl, 6 ex
FIELD: manufacture of rubber articles on base of butadiene styrene rubber; manufacture of ebonite battery monoblocks.
SUBSTANCE: ebonite mix on base of butadiene styrene rubber contains reclaim, sulfur, diphenyl guanidine, magnesium oxide, kaolin, paraffin, phthalic anhydride with synthetic fatty acid, soap-surfactant, petrolatum oil and filler. Used as filler is ion-exchange resin -cationite KY-2 ground preliminarily to fraction of 1-40 mcm and taken in the amount of 180-360 parts by mass.
EFFECT: improved physico-mechanical parameters of vulcanizers; reduction of deficiency of rubber phase in ebonite; utilization of used ion-exchange resins.
SUBSTANCE: invention refers to technology of hull-kernel particles which can be used to modify impact strength of poly(met)akrylate moulding compositions. According to method a) water and emulsifier b) are added with 25.0 to 45.0 mass fractions of the first composition containing A) alkylmetacrylate 50.0 to 99.9 mass fractions, B) alkylakrylate 0.0 to 40 mass fractions, C) cohesive monomers 0.1 to 10.0 mass fractions, and D) styrene monomers 0.0 to 8.0 mass fractions, and polymerised, c) added 35.0 to 55.0 mass fractions of the second composition containing E) (met)akrylates 80.0 to 100.0 mass fractions, F) cohesive monomers 0.05 to 10.0 mass fractions, and G) styrene monomers 0.0 to 20.0 mass fractions, and polymerised, d) added 10.0 to 30.0 mass fractions of the third composition containing H) alkylmetakrylates 50.0 to 100.0 mass fractions I) alkylakrylates 0.0 to 40.0 mass fractions and J) styrene monomers 0.0 to 10.0 mass fractions, and polymerised. Method is distinctive in that e) each polymerisation cycle is performed at temperature within 60 to 90°C and f) fractional content of all substances is selected so that total weight A) to J) per total weight of aqueous dispersion exceeds 50.0 mass %. Presented method is used to produce impact strength modifiers minimum content of which provides sufficient improvement of impact strength when tested on cut moulding composition samples, not degrading at the same time other important properties of moulding composition.
EFFECT: production of impact strength modifiers minimum content of which provides sufficient improvement of impact strength when tested on cut moulding composition samples, not degrading at the same time other important properties of moulding composition.
17 cl, 8 tbl
SUBSTANCE: described is a foaming polystyrene composition in form of granules, containing: (1) 100 pts. wt polystyrene, preferably with average molecular weight Mw ranging from 150000 to 400000 Da, (2) 3 to 20 pts. wt of foaming agent, which is water or a mixture of water and at least one other foaming agent, for example, hydrocarbon, (3) 0.1 to 12 pts. wt of at least one modified clay, with at least a partial lipophilic property. Also described is a method of producing a foaming polystyrene composition in form of granules, which involves polymerisation of styrene and optionally at least one comonomer, which is brought into an aqueous suspension and mixing by reacting 100 pts. wt styrene and optionally a comonomer or comonomers with at least one radical polymerisation initiator and at least one suspension agent. This method is characterised by that, the reaction process is also carried out in the presence of (a) 4 to 23 pts. wt of foaming agent, which is water or a mixture of water and at least one other foaming agent, for example hydrocarbon foaming agent, and (b) 0.5 to 12 pts. wt of at least one modified clay, with at least a partial lipophilic property. Described also is use of the said foaming polystyrene composition in form of granules in making moulded and foamed objects, preferably with bulk density ranging from 5 to 50 kg/m3, preferably from 5 to 30 kg/m3.
EFFECT: increased effectiveness of the composition.
17 cl, 6 ex
SUBSTANCE: elastomeric polymer moulding composition can be used for making capacitor insulating layers, medical devices and fuel element seals. An elastomeric polymer moulding composition is described, which contains an elastomeric polymer, which can be cured by peroxide, is completely soluble (i.e. does not contain gel), does not contain divinyl benzene and extracting impurities. Material made based on the said composition is safe during production and use. The composition is an alternative to XL-10000 based compositions (butyl rubber, partially cross linked with divinyl benzene).
EFFECT: increased effectiveness of the composition.
7 cl, 1 tbl, 5 ex, 2 dwg
SUBSTANCE: described is a dispersion composition which is in form of an oil based suspension containing the following in wt % (per total weight of the dispersion composition): plant oil 50-90, UV-light absorber 0.001-0.1, bactericidal agent 0.001-0.1, ultrahigh molecular α-olefin-styrene polymer which lowers liquid flow resistance 5-40 and lubricant 2-25. To obtain the dispersion composition, the UV-light absorber and bactericidal agent are added to plant oil and a first mixture is obtained. The mixture is stirred to homogeneous state for use as a dispersant. The lubricant is then added to the polymer and a second mixture is obtained. The second mixture is crushed at temperature equal to lower than -90°C. The obtained powder is added to the dispersant and the mixture is stirred to obtain a suspension.
EFFECT: obtaining high content of dry composition substance, improved stability of the composition with the polymer.
14 cl, 7 tbl, 7 ex
SUBSTANCE: composition contains from 30 wt % to less than 50 wt % propylene-alpha-olefin copolymer and from more than 50 wt % to 70 wt % styrene block-copolymer. The propylene-alpha-olefin copolymer has at least 70 wt % links formed from propylene, and from 10 to 25 wt % links formed from C2- or C4-C10-alpha-olefin and has heat of fusion less than 37 J/g and melt flow index from 0.1 to 100 g/10 min. The composition has modulus of elasticity in tension less than 20 MPa, ultimate tensile stress of at least 5 MPa and elongation at failure of at least 900% and low relative instantaneous shrinkage.
EFFECT: composition has good physical properties such as elasticity and flexibility, and can also be easily processed using traditional equipment for processing polyolefins.
21 cl, 8 dwg, 2 tbl
SUBSTANCE: invention relates to the technology of producing granular foamed compositions based on vinyl aromatic compounds and can be used in making articles from foam plastic. The foamed composition contains a polymer matrix selected from a copolymer containing 90-99.995 wt % of at least one vinyl aromatic monomer and 0.005-10 wt % salt or C1-C4 alkyl ether of styrenesulphonic acid; or a polymer mixture containing 92-99.995 wt % vinyl aromatic (co)polymer and 0.005-8 wt % of a product selected from a salt or C1-C4 alkyl ether of styrenesulphonic acid and a copolymer of styrene and a salt or C1-C4 alkyl ether of styrenesulphonic acid; 1-10 wt % with respect to weight of the polymer matrix of the foamed additive selected from aliphatic or cycloaliphatic hydrocarbons containing 3-6 carbon atoms, or mixtures thereof, halogenated derivatives of aliphatic hydrocarbons containing 1-3 carbon atoms, and carbon dioxide. Foamed beads, foamed articles and methods of producing granular foamed compositions in an aqueous suspension or in a mass are also described.
EFFECT: obtaining foamed granules having low density and low electrostatic charge.
9 cl, 9 ex
SUBSTANCE: invention relates to a polymer composition which is used to make sterilisable containers, for example, sterilisable bags or medical packaging for intravenous solutions, for example. The composition contains a heterophase propylene copolymer and styrene-based elastomer(s), wherein the ratio of the flow rate MFR2 (230°C) of the heterophase propylene copolymer to the flow rate MFR2 (230°C) of the styrene-based elastomer (MFR2 (230°C) (A)/MFR2 (230°C)(B))≤1.0. The heterophase copolymer contains a polypropylene matrix and an elastomeric propylene copolymer which contains at least one comonomer selected from a group comprising ethylene and C4-C20 alpha-olefins. The weight content of styrene in each styrene-based elastomer is equal to less than 15%, and the total weight content of styrene-based elastomers (B) from the total amount of polymers in the polymer composition ranges from 16.0 to 46.0%. The polymer composition disclosed herein is particularly suitable for making heat-sealable films.
EFFECT: polymer composition provides high air-tightness of articles made therefrom after sterilisation while maintaining high strength and dullness.
22 cl, 3 tbl
SUBSTANCE: composition contains at least one latex polymer, at least one pigment, water and at least one auxiliary additive. The auxiliary additive is ethoxylated tristyrenephenol and is present in an amount higher than about 1.3 wt % with respect to the weight of the polymer.
EFFECT: improved freeze-thaw stability, as well as other properties such as film setting time, colour stability, low film-formation temperature, film-forming resistance, blocking resistance, adhesion and sensitivity to water.
12 cl, 1 dwg, 24 tbl, 10 ex
SUBSTANCE: composition contains the following in %: a) 35-78% aromatic polycarbonate, b) 6-55% thermoplastic polyester - polyethylene terephthalate, c) 5-15% halogenated acrylate, d) 3-15% impact resistance modifier, e) 2-15% phosphate-containing compound and f) 0.05-0.5% fluorinated polyolefin. The acrylate contains repeating structural units of the following formula: in which R1, R2, R3, R4 and R5 denote hydrogen, alkyl or aryl, n ranges from 0 to 5, m ranges from 10 to 10000, and R denotes halogen. The phosphate-containing compound is selected from a compound of formula (III) O-P-[-OCH2C(CH2Br)3]3 (III) and compounds of formula , in which R1, R2, R3 and R4 denote C1-C8-alkyl, C5-C6-cycloalkyl, C6-C20-aryl or C7-C12-aralkyl, unsubstituted or substituted with alkyl, n equals 0 or 1, N equals 0.1-30, X denotes a mono- or polycyclic aromatic residue with C6-C30 or a linear or branched aliphatic residue with C2-C30.
EFFECT: invention enables to obtain a composition with higher impact resistance and fire resistance.
3 cl, 1 tbl, 4 ex
SUBSTANCE: invention relates to a thermoplastic moulding composition which is flame retardant and impact resistant. The thermoplastic moulding composition for making moulded articles contains aromatic polyester carbonate, polyalkylene terephthalate, graft copolymer having a nucleus-shell morphology, having a graft shell which contains polymerised alkyl(meth)acrylate, and a nucleus made from composite rubber which contains interpenetrating and inseparable polyorganosiloxane and poly(meth)alkyl acrylate components in form of particles having size from 0.05 to 5 mcm and glass transition temperature lower than 0°C, and where the weight ratio polyorganosiloxane/poly(meth)alkyl acrylate/hard shell equals 70-90/5-15/5-15, and a phosphorus-containing compound (IVa), where R1, R2, R3 and R4 denote phenyl, R5 denotes hydrogen, n equals 1, q ranges from 1 to 2, Y denotes C(CH3)2 and fluorinated polyolefin.
EFFECT: high resistance to inflammation and impact strength.
8 cl, 1 tbl
SUBSTANCE: composition contains (A) a bisphenol-based homopolycarbonate in amount of 10-90% of the weight of the composition (weight parts), B) 10-90 pt.wt first graft (co)polymer containing a graft copolymerisation base selected from a group consisting of polyurethane, ethylene-vinyl acetate, silicone, ethylene-propylene-diene rubber, ethylene-propylene rubber, acrylate rubber, diene rubber and polychloroprene. When the first graft copolymer contains 3-50% rubber component, and when the graft phase contains 49-96% polymerised monovinyl diene aromatic monomer and 1-48% monoethylene unsaturated polar monomer, wherein the percentage relates to the weight of the first graft (co)polymer. The composition also contains 1-20 pts.wt linear polymer (C) with glycidyl ester functional groups, containing repeating units based on one or more glycidyl ester monomers. The composition contains 1-20 pts.wt second graft (co)polymer (D) containing a nucleus and a shell. The molecular structure of the nucleus includes an all-permeating mesh structure made from poly(meth)alkyl acrylate. The shell is made by polymerising methyl methacrylate.
EFFECT: low light-reflecting power and high impact strength at low temperatures.
17 cl, 2 tbl
SUBSTANCE: composition contains (A) about 10-80 wt % soft rubber-like resin based on a vinyl aromatic copolymer, (B) about 4-60 wt % rubber-modified resin based on a vinyl aromatic copolymer and (C) about 5-80 wt % resin based on a vinyl aromatic-vinyl cyanide copolymer. Resin (A) contains as a dispersion phase rubber particles with content of graft polymer of about 40-90%, and average particle diameter of about 6-20 mcm. The moulded article is made by moulding from said thermoplastic resin composition and has a soft surface touch with average surface roughness of about 400-800 nm.
EFFECT: invention enables to obtain moulded articles with a pleasant low lustre and high impact viscosity.
16 cl, 5 dwg, 2 tbl, 10 ex