Patent · US Expired

Polyester urethanes

US6852825B2 · kind B2 · utility

89Cited by

4References

14Claims

0Family size

Assignee

MNEMOSCIENCE GMBH · DE

Inventors

Andreas Lendlein · Berlin, DE
Annette Schmidt · Neuss, DE
Karl Kratz · Berlin, DE
Jürgen Schulte · Aachen, DE

Key dates

Filing date	Apr 17, 2003
Grant date	Feb 8, 2005
Priority date	—
Expiry date	Apr 17, 2023

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G2280/00
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The present invention relates to polyester urethanes comprising polypentadecalactone segments. These polyester urethanes do show good properties which may be adjusted in a controlled manner. In preferred embodiments the polyester urethanes display additionally polycaprolactone segments. Such polymer may show shape memory effects.

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