Reactive polyurethanes

US5356945A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Joachim Werner · Bethel Park, US
• Ulrich Liman · Monheim, DE
• Walter Meckel · Neuss, DE
• Armin Zenner · Dormagen, DE
• Wolfgang Pätzold · Northeim, DE

Key dates

• Filing date: Jun 15, 1993
• Grant date: Oct 18, 1994
• Expiry date: Jun 15, 2013

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G2170/20
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention relates to polyurethanes with softening temperatures above 80.degree. C. which are NCO-free, which are reactive via masked isocyanates, which are essentially linear and extensively pre-lengthened, and their preparation. The polyurethanes can be used as powders which can be processed like thermoplastics and post-cured.