초록 ▼

Ground polymeric elastomer or other polymeric plastic, particularly from recovered scrap, is surface modified by treatment with a gaseous mixture containing a minor amount of fluorine and a larger amount of at leasts one reactive gas in an inert gaseous carrier. By the treatment the ground material

Ground polymeric elastomer or other polymeric plastic, particularly from recovered scrap, is surface modified by treatment with a gaseous mixture containing a minor amount of fluorine and a larger amount of at leasts one reactive gas in an inert gaseous carrier. By the treatment the ground material is made more compatible for admixture with polyfunctional polymer-forming liquids, thereby obtaining novel composites of controlled physical properties. The other reactive gas is preferably oxygen or one of the gases from the group consisting of: chlorine and SO2 with or without added oxygen.

대표청구항 ▼

A composition of matter prepared by surface treating styrene-butadiene rubber material, in finely divided form, with a gaseous medium comprising fluorine and a reactive gas selected from the group consisting of Cl2, SO2, Br2, BrCl3, BrCl, CO and mixture thereof, under conditions sufficient to chemic

A composition of matter prepared by surface treating styrene-butadiene rubber material, in finely divided form, with a gaseous medium comprising fluorine and a reactive gas selected from the group consisting of Cl2, SO2, Br2, BrCl3, BrCl, CO and mixture thereof, under conditions sufficient to chemically modify the surface of said styrene-butadiene rubber material, and subsequently incorporating said treated material into a matrix or binder material formed from a polyurethane-forming liquid.