Patent · US Expired

Enzyme mixtures and processes for desizing textiles sized with starch

US5769900A · kind A · utility

1Cited by

9References

1Claims

0Family size

Assignees

BAYER HEALTHCARE LLC · DE
GENENCOR INTERNATIONAL, INC. · US

Inventors

Wilfried Hahn · Nienburg, DE
Axel Seitz · Hemmingen, DE
Martin Riegels · Hilden, DE
Rainhard Koch · Neunburg vorm Wald, DE
Michael Pirkotsch · Leverkusen, DE

Key dates

Filing date	Jan 22, 1997
Grant date	Jun 23, 1998
Priority date	—
Expiry date	Jan 22, 2017

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD06L1/14
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

Mixtures of various starch-degrading enzymes (amylases) which comprise at least one high temperature amylase (HTA) and at least one low temperature amylase (LTA) in an activity ratio of HTA to LTA of 10%:90% to 90%:10% develop at least 60% of their maximum activity in the temperature range from 30.degree. to 90.degree. C. Such mixtures can be diluted with water and treated with customary additives. These mixtures are suitable for desizing textiles sized with starch by treatment of the textiles with the mixtures mentioned and subsequent rinsing.

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