Curable polythiol-cyclopolyene sealant compounds

US6486269B2 · kind B2 · utility

Assignee

• PBT Brands, Inc. · US

Inventors

• Jonathan D. Zook · Stillwater, US
• David W. Jordan · San Fernando, US
• Dean M. Willard · New York, US
• George Jones · Tustin, US
• Michael A. Cosman · Valencia, US

Key dates

• Filing date: Mar 9, 2001
• Grant date: Nov 26, 2002
• Expiry date: Mar 9, 2021

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G75/045
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A curable sealant compound comprising: a polythiol; a cyclopolyene having a formula: where X is C1-5 aliphatic, Y is a C1-6 aliphatic, R2 is in each occurrence H, C1-C10 alkyl, C2-C10 alkenyl, Q—R3 where Q is O or S and R3 is C2-10 alkenyl, such that the cyclopolyene has non-conjugated carbon—carbon unsaturated bonds, and in formula (VII) there is one non-conjugated carbon—carbon unsaturated bond within the ring that is non-conjugated to other carbon—carbon unsaturated bonds; and an effective amount of a free radical catalyst.