Containing the calcium carbonate bulking agent and the said bulking agent for hardening die resin, becomes the hardening die resin constituent

摘要

PROBLEM TO BE SOLVED: To provide a surface-treated calcium carbonate-additive material which is compounded in a resin and gives a resin composition having excellent thixotropy, slump resistance, storage stability, adhesive property, etc.;SOLUTION: A surface on a calcium carbonate additive-material is treated by an aliphatic acid glycerin ester wherein in the aliphatic acid glycerin ester represented by general formula (1) [X₁, X₂, X₃ are each RCOO- or OH-, R is a group represented by C_xH_2x+1, C_yH_2y-1, C_zH_2z-3 or C_wH_2w-5 (x is an integer of ≥0, y is an integer of ≥2, z is an integer of ≥3 and w is an integer of ≥4)], 50-95% of the total number of X₁, X₂ and X₃ are a stearic acid residue and its 50-5% are a palmitic acid resin.;COPYRIGHT: (C)2002,JPO