Patent · US Expired

Enzymatic method for hair recovery with concurrent opening of hide structure

US4294087A · kind A · utility

12Cited by

3References

13Claims

0Family size

Assignee

Rohm Co., Ltd. · JP

Inventors

Rolf Monsheimer · Darmstadt, DE
Ernst Pfleiderer · Weiterstadt, DE

Key dates

Filing date	Apr 2, 1980
Grant date	Oct 13, 1981
Priority date	—
Expiry date	Apr 2, 2000

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC14C1/065
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

What is disclosed is a method for the recovery of hair from an animal hide and for a concurrent opening of the hide structure using a proteolytic enzyme, which method comprises first pre-treating the hide, free of preservative salt, in the acid pH region with a material cleaving disulfide bridges and then, without a previous softening, concurrently loosening hair and opening the hide structure by treating said hide with a protease, effective in the alkaline region, at a pH value of about 11 to about 13.

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