Urethane polymers and sealant compositions containing the same

US4067844A · kind A · utility

Assignee

• TREMCO INCORPORATED · US

Inventors

• Larry R. Barron · Mentor, US
• Herbert Turk · Remscheid, DE

Key dates

• Filing date: Dec 22, 1976
• Grant date: Jan 10, 1978
• Expiry date: Dec 22, 1996

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G18/10
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Novel, curable polyurethane polymers in which a proportion of the NCO terminations are reacted with certain amino silanes, or with the residual on reaction of a mercaptosilane with a monoepoxide, or with the residual on reaction of an epoxysilane with a secondary amine. Sealant compositions formed with the novel polymers are stable in storage, moisture curable and adhere well to various substrates, obviating the need for a primer.