Stabilization of organic polyisocyanates

US5175349A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Pramod Gupta · Bedburg, DE
• Christian König · Echterdingen, DE
• Hans-Jurgen Rabe · Leverkusen, DE
• Hans-Wilhelm Engels · Kerpen, DE
• Wilfried Nolte · Leverkusen, DE
• Chiraranjan Podder · Dormagen, DE

Key dates

• Filing date: Mar 1, 1991
• Grant date: Dec 29, 1992
• Expiry date: Mar 1, 2011

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C263/18
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The present invention relates to the use of nucleus-substituted 4-hydroxyphenyl propionic acid compounds for stabilizing organic polyisocyanates.