| 摘要 |
1524900 Coating composition; clay; chalk MOORE BUSINESS FORMS Inc 21 April 1976 [20 June 1975] 16203/76 Heading C1A [Also in Division D2] A formulation for coating receiver sheets in carbonless copying systems comprises water, an "active bentonite-type clay", an inactive material selected from kaolinite, chalk, and a mixture of chalk and kaolin, and a binder, the formulation having a solids content of from 43% to 60% by weight and a viscosity of from 700 to 7000 cps. An "active bentonite-type clay" is a bentonite clay containing montmorillonite, an acid-leached bentonite clay as defined in the Specification, or montmorillonite. |
