Polyurethane polyolefins and prepolymers based on hydroxy functional polybutadiene

US5990340A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Karl W. Haider · Wexford, US
• Jack C. Chan · Peachtree City, US
• E. Haakan Jonsson · Dorpsstraat, US
• Uli Franz · Solingen, DE
• Mark Allen Peters · Fairfax, US
• Ronald P. Taylor · Charlottesville, US

Key dates

• Filing date: Dec 30, 1998
• Grant date: Nov 23, 1999
• Expiry date: Dec 30, 2018

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G18/69
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A di-hydroxy-functionalized linear non-crosslinked polyolefin is disclosed having no pendant chain-branched groups which is prepared by reacting 1,4-diacetoxy-2-butene with 1,5-cyclooctadiene in the presence of a catalyst comprising a ruthenium metal carbene complex, characterized in that the functionality number of said polyolefin as determined by NMR is 2.0 and the viscosity of said polyolefin ranges from about 800 to 16000 mPa.s @25.degree. C. at a number average molecular weight ranging from 2,600 to 6,500 g/mole. A prepolymer comprising the reaction of a polyisocyanate with the polyolefin is also disclosed.