公开(公告)号：CA1277891C

公开(公告)日：1990-12-18

申请号：CA525997

申请日：1986-12-22

Applicant: PCR

Inventor： DE PASQUALE RALPH J ,  WILSON MICHAEL E

IPC: C04B41/62 ,  C04B41/49 ,  C04B41/82 ,  C04B41/84 ,  C08L83/06 ,  C09D201/00 ,  C09K3/18 ,  C09K3/00 ,  C09D4/00

Abstract: There is provided an aqueous emulsion of (a) a hydrolyzable silane having the general formula: Rn - Si - (R')4-n wherein R is a hydrocarbyl group containing from 1 to 20 carbon atoms, R' is a hydrolyzable group and n is 1 or 2, and oligomers thereof, e.g., dimers and trimers, and other oligomers, (b) an emulsifying agent having an HLB value of from 4 to 15, and (c) water. The emulsion is useful for rendering porous ceramic materials water repellant.

公开(公告)号：CH647512A5

公开(公告)日：1985-01-31

申请号：CH411881

申请日：1981-06-22

Applicant: PCR

Inventor： DE PASQUALE RALPH J ,  SCHUMAN PAUL D

IPC: C07D239/30 ,  C07D239/54 ,  C07D239/553