One-component, storage-stable, UV-crosslinkable organosiloxane composition

US11161981B2 · kind B2 · utility

Assignee

• ELANTAS Beck GmbH · DE

Inventors

• Andreas Steinmann · Hamburg, DE
• Kim Bastian Bebenroth · Hamburg, DE

Key dates

• Filing date: Dec 1, 2016
• Grant date: Nov 2, 2021
• Expiry date: May 22, 2037

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L2203/206
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention relates to the use as a coating or impregnating agent of an organosiloxane composition comprising a) 20 to 98.999989 wt % of at least one polyorganosiloxane comprising at least two alkenyl or alkynyl groups, as component A; b) 0.1 to 30 wt % of at least one linear or branched polyorganosiloxane comprising at least 3 Si—H groups, as component B; c) 0.000001 to 1 wt % of at least one UV-activatable, platinum-containing hydrosilylation catalyst, as component C; d) 0.00001 to 5 wt % of at least one alkynol of the general formula (I), where R1, R2 and R3 independently of one another are selected from H, C1-C6 alkyl and C3-C6 cycloalkyl; or R1 is selected from H, C1-C6 alkyl and C3-C6 cycloalkyl, and R2 and R3 are connected to one another and form a 3- to 8-membered ring, as component D; e) 0 to 79.899989 wt % of one or more polyorganosiloxanes comprising two terminal Si—H groups or one terminal Si—H group and one terminal alkenyl group, as component E; f) 0 to 20 wt % of one or more epoxy organosiloxanes, as component F; g) 0 to 5 wt % of one or more organosiloxanes, different from component A and having 1 to 5 Si atoms, and comprising at least two alkenyl groups, as compo…