Moisture-hardening one-component polysiloxane compositions

US4870130A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Theo Achtenberg · Leverkusen, DE
• Hans-Gerd Metzinger · Leverkusen, DE
• Hans Sattlegger · Odenthal, DE
• Karl-Heinz Sockel · Leverkusen, DE
• Wilhelm Weber · Neustadt, DE

Key dates

• Filing date: Oct 19, 1988
• Grant date: Sep 26, 1989
• Expiry date: Oct 19, 2008

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S528/901
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Polysiloxane compositions which harden in the presence of moisture by elimination of alcohols, which have high stability in storage while unvulcanized in the absence of moisture, which exhibit good adhesion to substrates, and which are improved by the presence of stabilizing silyl derivations of N-methyl benzamide contain: PA0 (A) 100 parts by weight of a polydimethyl siloxane which contains terminal diorganyloxyorganosilyl or triorganyloxylsilyl groups and which has a viscosity of 0.1 to 100 Pas, PA0 (B) 0 to 100 parts by weight of an .alpha.,.omega.-bis(trimethylsiloxy)-polydimethyl siloxane which has a viscosity of from 0.04 to 10 Pas, PA0 (C) 0 to 5 parts by weight of an alkoxysilane having the formula EQU R.sup.1.sub.a Si(OR.sup.2).sub.4-a, PA0 in which PA1 R.sup.1 is C.sub.1 -C.sub.6 alkyl, C.sub.2 -C.sub.6 alkenyl or C.sub.5 -C.sub.6 aryl; PA1 R.sup.2 is C.sub.1 -C.sub.6 alkyl, and a is 0 or 1, PA0 (D) 0.1 to 5 parts by weight of an aminoalkyl alkoxysilane containing one or more basic nitrogen atoms attached to a silicon atom through at least 3 carbon atoms, PA0 (E) 5 to 250 parts by weight of a reinforcing or non-reinforcing filler or filler mixture, PA0 (F) 0.01 to 2 parts…