Polyester polyols liquid at room temperature and their preparation and use in preparing plastics by polyisocyanate addition polymerization

US4778830A · kind A · utility

Assignee

• BASF SE

Inventors

• Joachim Streu · Dachau, DE
• Matthias Marx · Fürstenfeldbruck, DE
• Peter Weyland
• Dietrich Scherzer · Neustadt, DE
• Wolfgang Straehle · Heidelberg, DE

Key dates

• Filing date: Dec 1, 1987
• Grant date: Oct 18, 1988
• Expiry date: Dec 1, 2007

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G63/16
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Disclosed are polyester polyols liquid at 25.degree. C., having an average functionality of from 2 to 3, a hydroxyl number of from 25 to 400, an acid number smaller than 10 and a viscosity at 25.degree. C. of from 200 to 10,000 mPas, which contain in bonded form units having at least one of the structures EQU --O--CH.sub.2 --CH(CH.sub.3)--CH.sub.2 --CH.sub.2 --CH.sub.2 --O--, EQU --O--CH.sub.2 --CH(C.sub.2 H.sub.5)--CH.sub.2 --CH.sub.2 --O--, EQU --OC--CH(CH.sub.3)--CH.sub.2 --CH.sub.2 --CO--and EQU --OC--CH(C.sub.2 H.sub.5)--CH.sub.2 --CO-- which are prepared by the polycondensation or transesterification of 2-methyl-1,5-pentanediol, 2-ethyl-1,4-butanediol, 2-methyl-glutaric acid and/or 2-ethyl succinic acid or their derivatives, optionally while using other organic polycarboxylic acids and multivalent aliphatic alcohols and are useful for preparing non-cellular or cellular polyurethane plastics or polyurethane-polyurea plastics.