Crystalline polymer composition

摘要

A crystalline polymer composition comprising 100 parts by weight of a crystalline polymer and 0.005 to 5 parts by weight of a compound represented by formula (I):wherein R1 and R2 each independently represent an alkyl group having 1 to 9 carbon atoms; R3 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms; and M represents an alkali metal,the compound having a chlorine content of 500 ppm or less.