Patent · US Expired

Aliphatic thermoplastic polyurethanes and use thereof

US6632866B2 · kind B2 · utility

2Cited by

2References

5Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Wolfgang Kaufhold · Recklinghausen, DE
Henricus Peerlings · Solingen, DE
Hans-Georg Hoppe · Leichlingen, DE

Key dates

Filing date	Apr 17, 2001
Grant date	Oct 14, 2003
Priority date	—
Expiry date	Apr 17, 2021

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G18/4854
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

A thermoplastic molding composition that contains an aliphatic thermoplastic polyurethane (TPU) resin is disclosed. The TPU is the product of a reaction of A) a diisocyanate reactant that contains predominantly hexamethylene diisocyanate, and B) a polyol reactant that contains polytetramethylene glycol and C) a chain extending reactant that contains primarily 1,6-hexanediol. The TPU that is further characterized in the equivalence ratio of A to B and NCO index exhibits improved properties.

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