Enzymatic method for hair recovery with concurrent opening of hi

Details Enzymatic method for hair recovery with concurrent opening of hi Enzymatic method for hair recovery with concurrent opening of hi

1980-04-02

1981-10-13

Lawson, Patrick D.

Leather manufactures

Processes

Skiving or splitting

8 9415, C14C 106

Patent

active

042940877

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.

REFERENCES:
patent: 2374836 (1945-05-01), Ruedebush
patent: 3269858 (1966-08-01), Mattei
patent: 3471518 (1969-10-01), Hager
Textile Research J. 30, 1-10 (1960), [Chem. Abstr. 54, 6135].
Textile Research J. 37, 1085-1086 (1967), [Chem. Abstr. 68, 96688h].
Ullmanns Encyclopedia of Tech. Chem., 4th Ed., vol. 12, p. 442.
DE-OS 21 57 034 [Chem. Abstr. 79, 54900t].
French Pat. No. 1,469,512 [Chem. Abstr. 67, 8460].
Technicuir 1974, 8 (7), 12-19 [Chem. Abstr. 82, 32473r].
Austrian Pat. No. 183,540 [Chem. Abstr. 50, 594c].

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