Room temperature curing organopolysiloxane composition

Abstract

Abstract PURPOSE:To provide the titled compsn. consisting of a specified organopolysiloxane, calcium carbonate filler, a specified organic silicone compd., and alcohol or carboxylic acid-modified organopolysiloxane, and exhibiting excellent contamination resistance and durability. CONSTITUTION:The compsn. consists of (A) 100pts.wt. organopolysiloxane showing a viscosity of 300-300,000 cSt at 25 deg.C and having at least two silanol group and Si-linked hydrolyzable group in one molecule, (B)1-400pts.wt. calcium carbonate filler, (C) organosilicon compd. having at least two Si-linked hydrolyzable groups on average in one molecule, in an amount sufficient to render the compsn. curable at room temp. (the total of silanol group or Si-linked hydrolyzable group in one molecule of A and Si-linked hydrolyzable group in C is at least 4.) and (D) 0.5-50pts.wt. alcoholic or carboxylic acid-modified organopolysiloxane.

Inventors

• 👤 Toshio Saruyama
• 👤 俊夫 猿山

Bibliographic Details