Patent · US Expired

Enzymatic unhairing method

US4636222A · kind A · utility

14Cited by

3References

8Claims

0Family size

Assignee

Rohm Co., Ltd. · JP

Inventors

Ernst Pfleiderer · Weiterstadt, DE
Tilman Taeger · Seeheim-Jugenheim, DE
Gertrud Wick · Weiterstadt, DE

Key dates

Filing date	Jul 30, 1985
Grant date	Jan 13, 1987
Priority date	—
Expiry date	Jul 30, 2005

Classification

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

Abstract

An enzymatic method for the unhairing of hides and skins in the alkaline pH range by treating them in a liquor at a pH from 9 to 11 with a proteolytic enzyme having an optimum activity in the pH range from 2 to 7.5, and then unhairing.

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