Process for the production of matte, non-blocking, thin-walled molded articles from linear thermoplastic polyurethane elasotomers containing polyadducts and their use

US4656199A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Georg Niederdellmann · Dormagen, DE
• Wilhelm Goyert · Leverkusen, DE
• Bernd Quiring · Leverkusen, DE
• Hans Wagner · Dormagen, DE

Key dates

• Filing date: Jan 30, 1986
• Grant date: Apr 7, 1987
• Expiry date: Jan 30, 2006

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L75/04
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention is directed to a process for the production of matte, non-blocking, thin-walled molded articles, films or tubes from polyurethane elastomers prepared from high molecular weight polyols which contain dispersed polyadducts based on polyisocyanate polyaddition products. The use of these high molecular weight polyols contained dispersed polyadducts allows for the preparation of thin-walled, molded articles which have reduced surface tackiness. The present invention is additionally directed to the molded articles produced by this process and to their use for forming polyurethane foam composites.