Patent ID: 7405252

Claim:
A vinyl chloride resin composition, comprising: 100 parts by mass of a vinyl chloride resin; and a co-ground mixture obtained by co-grinding a mixture of: (a) 0.001 to 10 parts by mass of at least one member selected from the group consisting of an organic phosphoric ester compound and a salt thereof represented by general formula (I): wherein R 1 , R 2 , and R 3 each represent a hydrogen atom or a straight-chain or branched alkyl group having 1 to 18 carbon atoms; R 4 represents a hydrogen atom or a methyl group; n represents 1 or 2; M represents a hydrogen atom or an alkali metal atom when n is 1, or M represents an alkaline earth metal atom or a zinc atom when n is 2, and (b) 0.001 to 10 parts by mass of a grinding aid.