摘要:
When the impact resistant resin composition comprising a graft polymer in which an aromatic alkenyl compound and an alkenyl cyanide compound are grafted on a rubbery polymer, and a matrix consisting essentially of an aromatic alkenyl compound-alkenyl cyanide compound copolymer satisfies the following conditions, the composition has an improved vacuum formability and the molded articles obtained by vacuum-forming the same have smaller variations in thickness at any given area and there is a smaller reduction of strength due to contact with foamed polyurethane:(1) the proportion of the rubbery polymer in said impact resistant resin composition is 10-30% by weight,(2) the graft polymer has a degree of grafting of 70-120% by weight,(3) the matrix has an intrinsic viscosity of 0.55-0.80 dl/g as measured at 30.degree. C. in methyl ethyl ketone, and(4) the weight ratio of the aromatic alkenyl compound to the alkenyl cyanide compound in the impact resistant resin composition is in the range of 2.0-2.8. When said resin composition contains further 0.01-2.0% by weight of a diorganopolysiloxane having a viscosity of 5-100,000 centistokes at 25.degree. C. and/or 0.1-3% by weight of a metal salt of a fatty acid, its ability to maintain the strength upon contact with foamed polyurethane is enhanced.
摘要:
A flame-retardant styrene resin composition comprising 100 parts by weight of a styrene resin, 1 to 25 parts by weight of at least one flame retarder (A) represented by the formula (I): ##STR1## wherein X is Br or Cl; and each of h and i is an integer of 2 to 5, and 1 to 25 parts by weight of at least one flame retarder (B) represented by the formula (II): ##STR2## wherein X is Br or Cl; each of l and m is an integer of 1 to 4; n means that the number of repeating units is 1 to 50; each of R.sup.1 and R.sup.2 is a C.sub.1-12 alkyl group; and each of R.sup.3 and R.sup.4 is a hydrogen atom, a lower alkyl group, an alkylphenyl group or a phenyl group, the total amount of (A) and (B) being 2 to 40 parts by weight. This composition has excellent heat resistance and excellent heat stability in addition to flame retardancy.
摘要:
A process for producing a thermoplastic resin by polymerizing a monomer mixture consisting of an unsaturated nitrile monomer and an alkenyl aromatic hydrocarbon monomer in the presence of a rubbery polymer latex, characterized in that(a) at first, a monomer mixture having an unsaturated nitrile monomer content of 0 to 20 weight % is polymerized in an amount of 30 to 70 weight % based on the amount of the whole monomer mixture,(b) subsequently, the residual monomer mixture having an unsaturated nitrile monomer content of 35 to 90 weight % is polymerized, and the unsaturated nitrile monomer content in the polymer part formed by polymerization in said (a) and (b) steps is 28 to 38 weight %. The thermoplastic resin obtained according to this process has a high chemical resistance, an excellent impact resistance and an excellent processability.
摘要:
A resin compound having superior electrical, mechanical, and molding properties that includes a synthetic resin and carbon fibrils. At least 50 wt % of the fibrils are intertwined to form fibril agglomerates whose diameter is in the range of 0.10-0.25 mm.
摘要:
A thermoplastic resin composition comprising(A) 1-90% by weight of a polyamide elastomer and(B) 99-10% by weight of at least one of the following (a) and (b):(a) a rubber-modified thermoplastic styrene resin consisting of a rubber-modified styrene polymer containing a hydroxyl group-containing alkenyl monomer as a copolymerized component or a mixture of rubber-modified styrene polymer with a styrene polymer, in which mixture at least one of these polymers contains a hydroxyl group-containing alkenyl monomer as a copolymerized component,(b) a mixture or reaction product of (1) 40-99% by weight of a thermoplastic polyurethane with (2) 60-1% by weight of a functional group-containing styrene resin in which a styrene resin is copolymerized with an unsaturated compound having at least one functional group selected from the group consisting of a carboxyl group, an acid anhydride group, an amino group, an epoxy group and a hydroxyl group.The above thermoplastic resin composition has a permanent antistatic property and is superior in mechanical properties, heat resistance during molding, moldability and surface appearance.
摘要:
A flame retarding resin composition comprising 100 parts by weight of a specific rubber-reinforced resin, 1-200 parts by weight of a phenol resin, 1-200 parts by weight of an organic phosphorus compound, 1-50 parts by weight of a nitrogen-containing compound, 0-40 parts by weight of an oligomer-type polymer containing a functional group, 0-30 parts by weight of a metal compound, a silicon compound, and/or polytetrafluoroethylene, and 0-300 parts by weight of a styrene-type resin. The composition has high impact resistance, excellent heat resistance, and a superior self-fire-extinguishing characteristic.
摘要:
A flame-retardant rubber-modified styrene resin composition comprising, as essential components, (A) a rubber-modified styrene resin, (B) a halogenated bisphenol type polycarbonate oligomer, (C) a halogenated bisphenol type compound, and (D) a halogenated polyolefin compound. The resin composition contains these components (A), (B), (C), and (D) at specific proportions, and its contents of the components (B) and (C) must be at a specified ratio. The resin composition is not only flame-retardant but also possesses such excellent characteristics as a high degree of light resistance, heat resistance, impact resistance and fluidity when it is molded. It can be molded into articles of various shapes and has a wide variety of applications in business machines, electric appliances, and automobile parts.
摘要:
A flame retardant resin composition including the following components (A), (B) and (C) in the ratio (A):(B):(C)=15-99:0-84:1-30% by weight; and wherein the molar ratio of bromine atom and antimony atom is 1.2-4.5:1. Component (A) is a rubber reinforced resin composition including 10-100% by weight of graft copolymer (A-1) which is obtained by the polymerization of (b) 90-30% by weight of monomer components including 5-50% by weight of bromostyrene and 95-50% by weight of one or more monomers selected from the group consisting of aromatic vinyl monomers, cyanated vinyl monomers, (meth)acrylic acid ester monomers, maleic anhydride, and maleimide monomers in the presence of (a) 10-70% by weight of a rubber-like polymer [(a)+(b)=100% by weight] and 90-0% by weight of copolymer (A-2) obtained by the polymerization of 60-90% by weight of aromatic vinyl monomers and 40-10% by weight of one or more monomers selected from the group consisting of cyanated vinyl monomers, (meth)acrylic acid ester monomers, maleic anhydride, and maleimide monomers. Component B is a bromine-containing copolymer obtained by the polymerization of 5-50% by weight of bromostyrene and 95-50% by weight of one or more monomers selected from the group consisting of aromatic vinyl monomers, cyanated vinyl monomers, (meth)acrylic acid ester monomers, maleic anhydride, and maleimide monomers. Component (C) is an antimony oxide.