PROCESS FOR TREATING A POROUS SUBSTRATE TO ACHIEVE IMPROVED WATER AND OIL REPELLENCY

摘要

porous substrate repulsion improves (10) to the water and oil by treating with a solution of a monomer (16) of the formula: (C n F 2n + 1) (CH2) X (CHR) OCOCH = CH2 wherein n is an integer; X is 0,1,2 or 3 and R is H or CH 2 OCOCH = CH2. The monomer is polymerized in situ on the substrate to form a coating (16 ') matching the shape of the substrate and protecting the porous structure.