Surface modified layered silicate material and compositions containing the same

摘要

Intercalated layered materials prepared by co-intercalation of a multi-charged onium ion spacing/coupling agent and a matrix polymer between the planar layers of a swellable layered material, such as a phyllosilicate, preferably a smectite clay. The spacing of adjacent layers of the layered materials is expanded at least about 3 ANGSTROM , preferably at least about 5 ANGSTROM , usually to about 15-20 ANGSTROM , e.g., 18 ANGSTROM with the di-charged onium ion spacing/coupling agent. The intercalation of the matrix polymer then increases the spacing between adjacent layers to at least about 15 ANGSTROM , preferably to about 20 ANGSTROM to about 30 ANGSTROM .