VINYL CHLORIDE RESIN COMPOSITION

The present invention relates to a vinyl chloride resin composition containing 100 parts by weight of a vinyl chloride resin (A) and 0.1 to 20 parts by weight of a processing aid (B), wherein the processing aid (B) contains 50 to 95 % by weight of a first polymer (b1) and 5 to 50 % by weight of a second polymer (b2), the processing aid (B) has a weight average molecular weight of 100,000 to 4,000,000, the first polymer (b1) of the processing aid (B) has Tg of 5 to 110 °C, the first polymer (b1) of the processing aid (B) is polymerized with 12 to 28 % by weight of a vinyl cyanide compound, 32 to 88 % by weight of an aromatic vinyl compound, 0 to 40 % by weight of an alkyl acrylate, and 0 to 30 % by weight of other vinyl compound copolymerizable with the vinyl cyanide compound, the aromatic vinyl compound, and the alkyl acrylate, per 100 % by weight of the first polymer (b1), the second polymer (b2) of the processing aid (B) has Tg of -40 to 50 °C, and the first polymer (b1) has Tg of 40 °C or higher than that of the second polymer (b2) .