Patent · US Expired

Sulfur containing polyhydroxyalkanoate compositions and method of production

US6495152B2 · kind B2 · utility

44Cited by

7References

12Claims

0Family size

Assignees

Tepha, Inc. · US
Metabolix, Inc. · US

Inventors

Alexander Steinbuchel · Havixbeck, DE
Tina Lutke-Eversloh · Somerville, US
Christian Ewering · Steinfurt, DE

Key dates

Filing date	Aug 17, 2001
Grant date	Dec 17, 2002
Priority date	—
Expiry date	Aug 17, 2021

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC12P11/00
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

A class of biopolymer including sulfur in the form of a thioester in the polymer backbone or a thioether in the polymer side chains has been developed. These are preferably produced by fermentation of bacteria with appropriate sulfur containing substrates, which are incorporated by a broad spectrum polyhydroxyalkanoate (“PHA”) polymerase. The sulfur-containing PHAs allow various applications and uses in industry. Representative embodiments of the applications of the sulfur-containing PHAs include their uses in the packaging industry, medicine, pharmacy, agriculture or food industry, as active agents or as coatings, packaging, or carriers.

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