Patent · US Expired

Biodegradable and compostable plastic articles, including flat-shaped articles

US5961906A · kind A · utility

6Cited by

4References

5Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Hanns P. Muller · Leverkusen, DE
Jochen Kalbe · Leichlingen, DE
Rainhard Koch · Neunburg vorm Wald, DE

Key dates

Filing date	Nov 4, 1997
Grant date	Oct 5, 1999
Priority date	—
Expiry date	Nov 4, 2017

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/29
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The use of dispersions of polyurethanes containing urea groups and based on selected starting materials, optionally via the intermediate stage of granules obtained by spray drying the dispersions, for the production of fully biodegradable shaped bodies.

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