Patent · US Expired

Polymer blends containing starch and polyurethane

US6008276A · kind A · utility

21Cited by

7References

6Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

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

Key dates

Filing date	Nov 24, 1997
Grant date	Dec 28, 1999
Priority date	—
Expiry date	Nov 24, 2017

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08L75/00
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Thermoplastically moldable, biodegradable, starch-containing polymer blends consisting essentially of PA1 A) 100 parts by weight of anhydrous starch, PA1 B) from 0.1 to 70 parts by weight of polyurethane containing urea groups and based on selected starting materials, PA1 C) from 0.5 to 70 parts by weight of a plasticizer component and PA1 D) from 2 to 20 parts by weight of water, a process for producing these blends by mixing the individual components in plastics processing machines and their use for producing moldings, films, fibers, coatings or laminates by thermoplastic processing.

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