Patent · US Expired

Composition and process for preparation of thermoplastic polyurethanes (TPU based on a polybutadiene soft segment)

US6166166A · kind A · utility

4Cited by

12References

17Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

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

Key dates

Filing date	Aug 26, 1998
Grant date	Dec 26, 2000
Priority date	—
Expiry date	Aug 26, 2018

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G18/10
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

A process for making a thermoplastic polyurethane material comprising the steps of casting an NCO-terminated prepolymer with 1,4-butanediol to form a casting composition; extruding the casting composition to form at least one strand of a polyurethane elastomer; pelletizing the at least one strand of said polyurethane elastomer to form at least one pellet; and processing the at least one pellet to form a thermoplastic article.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.