VINYL CHLORIDE RESIN COMPOSITION

• Main Authors: KADOKURA, MAMORU, NAKAJIMA, NOBUMASA, YUI, KOJI, HONGO, SHINYA
• Format: Patent
• Language: English; French; Japanese
• Published: 10.04.2003
• Edition: 7
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; GENERAL PROCESSES OF COMPOUNDING; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; WORKING-UP

A vinyl chloride resin composition extremely excellent in weather resistance and impact resistance, which comprises 2 to 30 parts by weight of (A) a graft copolymer obtained by polymerizing 5 to 30 parts by weight of (a−2) a graft monomer component comprising 92 to 100 wt% of methyl methacrylate and 0 to 8 wt% of one or more monomers selected from among alkyl methacrylates wherein the alkyl group has 2 to 8 carbon atoms, alkyl acrylates wherein the alkyl group has 1 to 8 carbon atoms, unsaturated nitriles, and aromatic vinyls in the presence of 70 to 95 wt% of (a−1) a crosslinked acrylic rubber polymer comprising 81 to 95 wt% of butyl acrylate, 4 to 18 wt% of an alkyl acrylate wherein the alkyl group has 8 to 12 carbon atoms, and 0.2 to 0.8 wt% of a polyfunctional monomer (with the proviso that the total amount of the polymer (a−1) and the monomer component (a−2) is 100 parts by weight) and 100 parts by weight of (B) a vinyl chloride resin. A vinyl chloride resin composition extremely excellent in weather resistance and impact resistance, which comprises 2 to 30 parts by weight of A a graft copolymer obtained by polymerizing 5 to 30 parts by weight of a-2 a graft monomer component comprising 92 to 100 wt% of methyl methacrylate and 0 to 8 wt% of one or more monomers selected from among alkyl methacrylates wherein the alkyl group has 2 to 8 carbon atoms, alkyl acrylates wherein the alkyl group has 1 to 8 carbon atoms, unsaturated nitriles, and aromatic vinyls in the presence of 70 to 95 wt% of a-1 a crosslinked acrylic rubber polymer comprising 81 to 95 wt% of butyl acrylate, 4 to 18 wt% of an alkyl acrylate wherein the alkyl group has 8 to 12 carbon atoms, and 0.2 to 0.8 wt% of a polyfunctional monomer with the proviso that the total amount of the polymer a-1 and the monomer component a-2 is 100 parts by weight and 100 parts by weight of B a vinyl chloride resin. L'invention concerne une composition de résine de chlorure de vinyle remarquable en termes de résistance aux intempéries et aux chocs, qui comprend entre 2 et 30 parties en poids de (A) un copolymère greffé obtenu par polymérisation de 5 à 30 parties en poids de (a-2) un constituant monomère greffé comprenant entre 92 et 100 % en poids de méthyle méthacrylate et entre 0 et 8 % en poids d'un ou de plusieurs monomères sélectionnés dans les méthacrylates d'alkyle, où le groupe alkyle comporte entre 2 et 8 atomes de carbone, les acrylates d'alkyle où le groupe alkyle comporte entre 1 et 8 atomes de carbone, des nitriles insaturés, et des vinyles aromatiques en présence de 70 à 95 % en poids de (a-1) un polymère caoutchouc acrylique réticulé comprenant entre 81 et 95 % en poids d'acrylate de butyle, entre 4 et 18 % en poids d'un acrylate d'alkyle où le groupe alkyle présente entre 8 et 12 atomes de carbone, et entre 0,2 et 0,8 % en poids d'un monomère polyfonctionnel ( sous réserve que la quantité totale du polymère (a-1) et du polymère (a-2) corresponde à 100 parties en poids) et 100 parties en poids de (B) une résine de chlore de vinyle.