Free-flowing, thermoplastically processible and post-crosslinkable polyurethane powders

US5210127A · kind A · utility

Assignees

• BAYER HEALTHCARE LLC · DE
• Miles Inc. · US

Inventors

• Joachim Werner · Bethel Park, US
• Walter Meckel · Neuss, DE
• Ulrich Liman · Monheim, DE
• Dirk Wegener · Bielefeld, DE
• Werner Rasshofer · Kürten, DE
• James W. Rosthauser · Moundsville, US

Key dates

• Filing date: Oct 21, 1992
• Grant date: May 11, 1993
• Expiry date: Oct 21, 2012

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08J2375/04
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Novel powders useful in the slush molding process are produced by reacting an emulsion of either an isocyanate or an isocyanate reactive material with either an isocyanate reactive material or an isocyanate, depending upon the nature of the component used to make the emulsion in the presence of an at least partially blocked isocyanate and an organic carrier. The final reaction product is subsequently removed from the carrier.