COUPLING AGENT-TREATED CALCIUM CARBONATE

摘要

PROBLEM TO BE SOLVED: To provide a coupling agent-treated calcium carbonate optimum for reinforcing a resin according to an inexpensive and simple method for production. SOLUTION: The coupling agent-treated calcium carbonate is obtained as follows. Calcium carbonate (A) is subjected to a surface treatment with a silica or a titanium coupling agent (B). The coupling agent-treated calcium carbonate has 0.01-1.0μm average particle diameter and <3 average aspect ratio (L/D) which is the ratio of the average major axis (L) of particles to the average minor axis (D) of the particles. COPYRIGHT: (C)2006,JPO&NCIPI