Fillers having vinyl siloxane groups bonded to the surface thereof and copolymers thereof with ethylenically unsaturated polymerizable monomers

Claim 1

AN ARTICLE OF MANUFACTURE COMPRISING A MEMBER OF THE GROUP CONSISTING OF FIBERS AND INORGANIC PULVERULENT SOLIDS AND A SOLID IN SITU POLYMERIZED SYNTHETIC ORGANIC POLYMER OF A LIQUID OLEFINIC COMPOUND AND AN INTERFACIAL LAYER ON SAID MEMBER OF SAID GROUP AND IN CONTACT WITH SAID SOLID POLYMER, SAID LAYER COMPRISING THE RESIDUE FROM THE INTERACTION OF VINYL SILOXANE GROUPS ON SAID GROUP MEMBER WITH SAID GROUPS IN SAID POLYMERIZABLE LIQUID WHICH REACT WITH OLEFINES, VINYL GROUPS OF SAID VINYL SILOXANE GROUPS ON SAID GROUP MEMBER BEING ATTACHED DIRECTLY TO SILICON, SAID SURFACE LAYER ON SAID GROUP MEMBER PRIOR TO POLYMERIZATION BEING VINYL SILOXANE GROUPS AND BEING DIFFERENT FROM THE BODY OF SAID GROUP MEMBER AND FROM SAID SYNTHETIC ORGANIC POLYMER, SAID GROUP MEMBER PRIOR TO ADHERING VINYL SILOXANE GROUPS THERETO NORMALLY HAVING HYDROXYL GROUPS ON THE SURFACE THEREOF.