Scorch resistant additives for polyurethane foams

US6051620A · kind A · utility

Assignee

• CK WITCO CORPORATION · US

Inventors

• Ibrahim S. Bechara · Carmel, US
• Thomas Baranowski · Würselen, DE
• James Stogis · Joliet, US
• Thomas Morong · Bridgeview, US

Key dates

• Filing date: Jun 11, 1997
• Grant date: Apr 18, 2000
• Expiry date: Jun 11, 2017

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G2110/0083
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Polyester polyols which contain at least one dihydrazide linkage --C(.dbd.O)--NHNH--C(.dbd.O)-- reduce the incidence of scorching when used as a reactant in the manufacture of polyurethane foam. Also disclosed are compounds of structures (2) and (3): EQU D--HN(--NH--C(.dbd.O)--R--C(.dbd.O)NH).sub.0-1 --NH--D (2) EQU (A--C(.dbd.T)--NH)--.sub.2 (3)