Thermoplastic polymer composition
(57) Abstract:Use: for the manufacture of structural parts based assignment thermoplastic polymer composition. The composition comprises, by weight. h: polycarbonate 40 - 95, ABS - Acrylonitrile butadiene and styrene 5 - 60, di-(2,4 - di - tert - butylphenyl) pentaerithritol 0,13 - 0,37, di - (2,6 - di - tert - butyl - 4 - were) pentaerythrityl or di - (2 - tert - butyl - 4 - cumylphenol) pentaerythrityl 0,13 - 0,37. Polycarbonate and ABS pre-dried at 120 and 80 respectively. The components of the composition are mixed in a mixer of the type "drunken barrel, the mixture ekstragiruyut at 240 -280 and shear rate 100-200-1ratio of viscosities of the melt polycarbonate and ABS is 1.4 to 2.6. The resulting composition is dried at 120C until a residual moisture content of not more than 0.02 wt. % getting samples by injection molding with melt temperature 280 280 5C 5 C and the mold temperature 70C. table 2. The invention relates to the plastics industry and the development of impact-resistant thermostable composition based on a mixture of polycarbonate (PC) and a copolymer of Acrylonitrile, butadiene and styrene (ABS) for izgotovlenie aging, high technological properties.Known impact-resistant composition based on blends of PC and ABS. The introduction of ABS in PC contributes to improvement of technological properties of compositions: there is an increase of melt flow index. However, the increase in the content of the ABS leads to a decrease in thermal stability. Dependence of impact strength according to Charpy from the composition of the mixture passes through a maximum at 20 wt. % ABS; it should be noted that the impact strength of the composition with the content of the ABS more than 20 wt. % less than that of the PC.These compositions do not provide the finished structural parts necessary thermal stability and droproot properties in a wide range of concentrations.Also known structural composition based on a mixture of PC and ABS, including the quality of thermal stabilizers esters of phosphorous acid or derivatives of ortho - and para-substituted phenols or bisphenols.However, this composition, providing stability during injection molding, does not provide the level of impact-resistant properties to the details of construction application based on it.The closest technical solution is a thermoplastic poly is 2,4-di-tert-butylphenyl)pentaerythrityl - fit is 0.1 to 5.0. The composition also contains phenolic antioxidant.However, the known arrangement does not provide long-term thermal stability during processing, the level of impact properties and resistance to heat aging detail constructional purposes.The aim of the invention is to improve thermal stability during processing compositions, resistance to heat aging and impact strength of the products based on it.This objective is achieved in that a thermoplastic resin composition comprising a polycarbonate, a copolymer of Acrylonitrile, butadiene and styrene and di-(2,4-di-tert-butylphenyl)pentaerythrit - childerotic, polycarbonate and a copolymer of Acrylonitrile, butadiene and styrene are the ratio of the viscosities of melts measured at 240-280aboutC and a shear rate of 100-200-1, 1,4-2,6, and optionally the composition comprises di(2,6-di-tinder-butyl-4-were) pentaerythrityl or di-(2-tert-butyl-4-cumylphenol) pentaerythrityl in the following ratio of the components of the composition, wt. hours : polycarbonate 40-95
The copolymer Smoot-
lonitrile, buta - diene and styrene 50-60
terphenyl) pentari - trialdirector 0,13-0,37
The use of PC and ABS in the specified range relative viscosity of the melt promotes the formation of a more homogeneous structure of the dispersed type in a wide range of compositions to 60 wt. % ABS inclusive, while the ratio of viscosities outside 1,4-2,6 already at a ratio of 30 wt. % ABS implements the structure of the matrix type. The education structure of the dispersed type provides improved impact strength of structural parts destination.The introduction of the mixture of additives di-(2,4-di-tert-butylphenyl)interfraternity-and di-(2,6-di-tert-butyl-4-were)pentaerythritoltetranitrate or di-(2-tert-butyl-4-cumylphenol)pentaerythritoltetranitrate phenolic compound, which corresponds to the phenolic component, PC, promotes better compatibility of the components of the mixture leads to increased toughness of time thermal stability of the composition and resistance to heat aging.In the composition used aromatic polycarbonate based on bisphenol a with a maul. m Mn(37-42)X103containing 0.15 to 0.2 wt. % di-(2,4-di-tert-butylphenyl)pentaerythritoltetranitrate (TU 6-06-68-89) with a melt flow index MFR of 2 to 12 g/10 min at a temperature of 280aboutAnd the 10 g/10 min (T = 220aboutC, P = 10 kgf), which is obtained by copolymerization of styrene with Acrylonitrile in the presence of butadiene or b butadienestyrene rubber.The invention is illustrated by the following examples.P R I m e R 1. Composition composition, wt. hours : polycarbonate 95 ABS 5
nil)pentaerythrit - childerotic 0,13
terphenyl)Penta - eatricedangit 0,13 mixed in the mixer "drunken barrel". Polycarbonate pre-dried to a residual moisture content of not more than 0.02% at a temperature of 120aboutC, ABS, at a temperature of 80aboutC. the resulting mixture ekstragiruyut at 280aboutC and a shear rate of 200 s-1ratio of the viscosities of molten polycarbonate and ABS conforms to:
Mn(37-42)103< / BR>The resulting composition is dried at 120aboutC to a residual moisture content of not more than 0.02 wt. % getting samples by injection molding with melt temperature 280 5aboutWhen the mold temperature 70aboutC.Properties of the obtained material are given in table. 1.P R I m e R s 2-15. Analogously to example 1 are processed compositions, formulations and modes of processing are presented in table. VA is not more than 15% from the original value of the TPP.Impact strength Charpy determine the tile size (HH) mm sharp notch in accordance with GOST 4647-80.Evaluation of compositions for resistance to heat aging is determined by the change in impact strength notched at 70aboutWith and exposure 960 hoursFor comparison with the composition of the prototype reproduced described composition. In the composition used polycarbonate brand FN 2500 Japanese company Idemitsu. Test data are also given in table. 1.As an indicator of toughness, adopted the characteristic toughness in Sharpie with sharp notch.Comparison of results of tests for impact strength Izod results of tests for impact strength with a sharp notch in Sharpie on experimental and literature data showed that the most informative from the point of view of the choice of songs is the test method for impact strength Charpy (PL. 2).So from the data given in table. 2, it follows that the impact-resistant composition based PC when tested for impact strength Izod have a performance impact strength equal to or less than (SC-250) than the basic PC that is not sootwetstwujiut. When the test PC and compositions based on impact strength Charpy clearly shows the influence of composition on the value of toughness.Tests for impact strength Charpy provide for two types of samples: type a - bar (HH) mm, rectangular notch; type B - bar (HH) mm, acute incision, this type of testing corresponds to the ISO-179.The most informative is the test method for impact strength according to Charpy sharp notch in comparison with other methods.Analysis of the data table. 1 shows that when using the compositions according to the invention in the specified range relative viscosity of melts of the original polymers allows you to:
B2 times, compared with the prototype, to increase the impact strength of structural parts of the material;
B2-fold increase in thermal stability of the composition during processing;
B2-fold increase in resistance to heat aging.When the content of the mixture of cyclic diphosphite less than 0.25% , the effect of stabilization is not observed (example 9), when more content is 0.75% (example 12) the composition has a high level of thermal stability, but there has been a sharp decrease in the impact Vascos the -1126555, C 08 L 69/00, 1985. A THERMOPLASTIC POLYMER COMPOSITION comprising a polycarbonate, a copolymer of Acrylonitrile, butadiene and styrene and di - (2,4 - di - tert - butylphenyl) pentaerythrityl, characterized in that it contains polycarbonate and the specified copolymer with the ratio of viscosities of melts measured at 240 - 280oC and a shear rate of 100 - 200-1, 1,4 - and 2,6 advanced composition comprises di(2,6 - di - tert - butyl - 4 - were) pentaerythrityl or di - (2 - tert - butyl - 4 - cumylphenol) pentaerythrityl in the following ratio, wt. including :
Polycarbonate 40 - 95
A copolymer of Acrylonitrile, butadiene and styrene 5 - 60
Di - (2,4 - di - tert - butylphenyl) pentaerythrityl 0,13 - 0,37
Di - (2,6 - di - tert - butyl - 4 - were) pentaerythrityl or 0,13 - 0,37
Di - (2 - tert - butyl - 4 - cumylphenol) pentaerythrityl 0,13 - 0,37
FIELD: carbon materials.
SUBSTANCE: invention concerns production of polymer material, which can be employed to manufacture construction-destination porous carbon articles. Polymer composition is filled with hardened phenol-formaldehyde resin and powder-like vanadium complex VO(C36H49O5N2) formed when vanadium is recovered from exhausted process solutions produced in processing of ferrous-metallurgy charge slags as product of reaction between metavanadate and bis-amino-phenol-formaldehyde oligomer. Composition also includes lubricant. Proportions of constituents are the following, wt %: pulverized bakelite 36-43.8, hardened phenol-formaldehyde resin 36-43.8, vanadium complex 10-25, and lubricant 2.4-3.0.
EFFECT: increased strength of porous carbon articles.
1 tbl, 7 ex
FIELD: polymer materials.
SUBSTANCE: invention provides elastic and resilient composition containing (A) at least one homopolymer of vinylidene fluoride or copolymer of vinylidene fluoride with at least one other monomer capable of being copolymerized with vinylidene fluoride wherein proportion of this other monomer ranges between 0 and 30 wt parts per 100 wt parts vinylidene fluoride, (B) at least one fluorinated elastomer, which is copolymer of vinylidene fluoride and at least one other fluorinated monomer, and optionally (C) plasticizer. Composition is characterized by that, on the one side, it contains 0.5 to 10 wt parts B and 0 to 10 wt parts C per 100 wt parts A, provided that B+C = 0.5 tp 10.5 wt parts, and, on the other side, such vinylidene fluoride homopolymer or copolymer is chosen in such a way that it has coefficient of fluidity below 5 g/10 min, as measured according to standard ISO 1133 at 230°C under load 5 kg, and critical modulus G ranging between to 5and 22 kPa, as measured in intersection of shear moduli G' and G" in molten state at 190°C.
EFFECT: essentially increased stability of composition in air and in crude oil.
7 cl, 6 tbl, 12 ex
FIELD: UV radiation protectors.
SUBSTANCE: claimed UV degradation-resistant composition contains water-soluble red-shifted light-resistant benzotriazole UV absorbers absorbing within the range 350-400 nm such as 2-(2-hydroxy-3-α-cumyl-5-t-octylphenyl)-2H-benzotriazole and 2-(2-hydroxy-3-α-cumyl-5-t-butylphenyl)-2H-benzotriazole combined with benzotriazoles shifted to red spectrum region. Invention also discloses asymmetric benzotriazoles, which are particularly soluble and suitable for wide application. UV absorbers according to invention also show high solubility in adhesive media. Laminated products made therefrom include isolation-control films, UV-absorbing glasses and class coatings, windscreens, reflecting protective coatings, sign-boards and the like.
EFFECT: expanded possibilities in UV protection area.
22 cl, 5 tbl, 52 ex
FIELD: polymer materials and composites.
SUBSTANCE: invention relates to epoxide compositions, in particular to preparation of hot-molded thermally curable epoxide compositions used as binders in manufacture of composite materials and products thereof. Binder comprises 60-70% 4,4'-isopropylidenediphenol epoxide resin, amine-type curing agent, and additionally 5-15% aliphatic epoxide resin (DEG-1) and 1-5% phenyl glycidyl ether. Curing agent (utilized in balancing amounts) is aniline-formaldehyde condensation product, condensation being carried out in presence of acid catalyst and giving aminobenzylaniline as main condensation product.
EFFECT: achieved high and stable physicochemical characteristics of glass-plastic articles.
2 tbl, 5 ex
FIELD: polymer materials.
SUBSTANCE: invention relates to stabilizer mixture used for stabilizing polyolefin against destruction initiated by visible light, heat, or oxidation and to thus stabilized polyolefin. Stabilizer mixture comprises spatially hindered amine compound and polymer containing polar residues, weight ratio of the two compounds being between 20:1 and 1:20, respectively, provided that (i) polymer cannot be the same compound as hindered amine compound and does not contain groups of formula (1) or (II): . Where G represents hydrogen atom or methyl and G1 and G2, independently of each other, each represents hydrogen atom or methyl or they together form =O; and (ii) polymer cannot contain acidic hydrogen atom.
EFFECT: considerable increased efficiency of stabilizer composition.
22 cl, 4 tbl, 4 ex
FIELD: polymer materials.
SUBSTANCE: invention relates to compositions of polymer materials, which can be used to mold cutouts, fibers, tubes, films, and insulating coating on electric cable. Thermoplastic polymer material comprises polyolefin and additive for improving extrusion processing in amounts from 0.001 to 10 wt parts per 100 wt parts material. Additive is block copolymer based on diisocyanates with softening temperature below thermoplastic molding temperature.
EFFECT: improved appearance and mechanic characteristics and reduced price of manufactured products.
4 cl, 8 dwg, 1 tbl, 4 ex
FIELD: piping systems intended for operation at high temperatures; single-layer and multi-layer pipes, fittings, chambers, valves and reservoirs made from propylene homo-polymers with nucleating agents.
SUBSTANCE: pipes are made from homo-polymers with nucleating crystallization agents in β-form at IR≥0.98, elasticity modulus ≥1500 Mpa, impact viscosity at Charpy notch at 23C°≥30 kJ/m2 softening temperature according to Vicat >90°C and deformation heat resistance >100°C. Specification gives description of method of manufacture of such pipes for chemical works. These pipes are used for carrying natural gas, dangerous fluids and/or toxic fluids.
EFFECT: enhanced rigidity of pipes; enhanced impact viscosity.
FIELD: polymer materials.
SUBSTANCE: invention relates to technology of manufacturing films designed for packaging textile, leather, and fur industry products during storage and transportation periods. Film is made from biologically active layer based on insecticide-modified polyethylene and adhesively joined with reinforcing barrier layer. Film may be non-perforated or have through holes 0.2 to 2.0 mm in diameter. Insecticide-modified layer 10-30 μm thick is in a gel state and dispersion liquid thereof is insecticide or its solution in polyethylene plasticizer.
EFFECT: reduced film preparation laboriousness and enabled release of all introduced insecticides out of film.
2 cl, 2 dwg, 1 tbl
FIELD: production of light-sensitive dispersions.
SUBSTANCE: proposed light-sensitive dispersion contains pigment imparting the oxidizing reducing properties under action of light radiation, salt of metal, complexion agent for salt of metal, liquid film-forming polymer composition, compound of main nature, organic solvent and water. Light sensitivity of dispersion is extended to wave length band from 190 to 450 nm. For production of proposed dispersion, use is made of low-cost metals. Method of application of dispersion on surface of insulating substrate includes selective and non-selective application in form of film, drying of this film and exposing to radiation by ultraviolet rays and/or laser beams at wave length band from 190 to 450 nm and energy within 25 mJ/cm2 to 100 mJ/cm2.
EFFECT: enhanced efficiency.
24 cl, 2 ex
FIELD: mechanical engineering; transportation of liquids and gases.
SUBSTANCE: invention relates to pressure pipe made of polypropylene composition and designed for transportation of liquids and gases, for instance, water or natural gas at increased pressure. Proposed pressure pipe with increased resistance to pressure acting during long period made of polypropylene composition of partially crystallized in β modification random propylene copolymer containing 73.0-99.0 mass % of propylene and 1-20 mass % of one or several C4-C8 α olefins and/or up to 7.0 mass % of ethylene.
EFFECT: provision of higher operating properties, reduced dependence of measured times of breakage under applied ring load.
13 cl, 10 ex, 2 tbl, 1 dwg
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
SUBSTANCE: invention relates to composite polymer materials based on a highly processable butadiene-acrylonitrile elastomer, which can be used to produce vulcanisates with high tensile strength, tear resistance, good dynamic properties and heat-ageing resistance. The polymer composition based on butadiene-acrylonitrile elastomer (SKN-26) and polyvinyl chloride (PVC) is modified with aluminium oxide nanoparticles. The polymer composition based on butadiene-acrylonitrile elastomer (SKN-26) polyvinyl chloride (PVC) contains sulphur, captax, thiuram, stearin and aluminium oxide.
EFFECT: improved operational characteristics: strength and dynamic mechanical properties.
1 tbl, 17 dwg
SUBSTANCE: flame-extinguishing polymer composition contains a combustible polymer mixed with a bromated flame-extinguishing additive selected from one or more compounds given below: (i) a copolymer containing styrene and 2,3-dibromopropylmaleimide repeating units; (ii) a bromated polyester containing bromine atoms bonded with aliphatic groups; (iii) an allyl ether which is bromated on a novolac resin ring; (iv) 3-bromo-2-hydroxypropyl ether of novolac resin; (v) 2,3-dibromopropyl ether cresol-novolac resin, and (vi) a bromated polymer or a copolymer obtained via ROMP.
EFFECT: stability of the flame-extinguishing additive at high temperatures, low toxicity and avoiding significant loss of physical properties of the polymer during use thereof.
7 cl, 10 ex
SUBSTANCE: invention relates to polymers that are suitable for use in making rubber articles, such as tyre treads. The method of producing a functionalised polymer involves conducting a reaction between a polymer with an active terminal group, which contains a diene monomer moiety, and a compound which contains a disilylamino group and a group which is capable of reacting with polymers with an active terminal group selected from keto, thioketo, epoxy and epithio groups. The polymer contains a diene monomer moiety and a terminal moiety which contains a disilylamino group and a residue of a group which contains a heteroatom. Said terminal moiety has the general formula , where values of radicals are given in the claim. Also disclosed is a vulcanisate which contains said polymer, and an article made therefrom.
EFFECT: said polymers and articles made therefrom are characterised by improved tensile properties, improved wear resistance and fatigue resistance and low hysteresis loss.
15 cl, 7 tbl, 22 ex