Steven K Manning

US Patent:

20030158365, Aug 21, 2003

Filed:

Jan 9, 2002

Appl. No.:

10/043738

Inventors:

Wolfgang Brauer - Leverkusen, DE
Herbert Heidingsfeld - Frechen, DE
Hans-Georg Hoppe - Leichlingen, DE
Wolfgang Kaufhold - Koln, DE
Bernhard Schulte - Krefeld, DE
Jack Chan - Mission Viejo CA, US
Steven Manning - Imperial PA, US
Nicholas Nardo - Weirton WV, US

International Classification:

C08G018/00

US Classification:

528/044000

Abstract:

A continuous process for the preparation of a thermoplastic polyurethane elastomer is disclosed. The process is carried out at 130 to 250 C. and comprises reacting at least one polyether diol with at least one organic diisocyanate and 1,4-di-(2,2′-hydroxyethyl)-hydroquinone, in the presence of tin dioctoate as a catalyst. The resulting thermoplastic polyurethane has a glass transition temperature (T) below 50 C. The inventive thermoplastic polyurethane is suitable for making injection molded or extruded articles.