Patent · US Expired

Thermoplastic block copolyesters capable of being composted for use as packaging materials

US5455311A · kind A · utility

5Cited by

5References

2Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Ernst Grigat
Ralf Dujardin · Willich, DE
Ralf Timmermann · Krefeld, DE
Hans-Georg Rast · Odenthal, DE

Key dates

Filing date	Aug 8, 1994
Grant date	Oct 3, 1995
Priority date	—
Expiry date	Aug 8, 2014

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G63/64
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The object of the present invention is the production of thermoplastically workable copolymers capable of being composted, characterized in that they consist of partially crystalline soft segments formed from aliphatic esters and also of amorphous hard segments and that the proportion of soft segments amounts to 70% to 95% by weight.

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