Condensates of bis-(4-hydroxyphenyl) sulfone as tanning assistan

Details Condensates of bis-(4-hydroxyphenyl) sulfone as tanning assistan Condensates of bis-(4-hydroxyphenyl) sulfone as tanning assistan

1988-09-20

1990-06-26

Lieberman, Paul

Bleaching and dyeing; fluid treatment and chemical modification

Treatment of hides, skins, feathers and animal tissues

Tanning

8 9424, 8 9425, C14C 304

Patent

active

049368648

ABSTRACT:
A condensate of bis-(4-hydroxyphenyl) sulfone, an aldehyde, a dialdehyde and/or glyoxylic acid and aminoacetic acid or an N-substituted aminoacetic acid is prepared and used as a tanning assistant, in a process for tanning leather in combination with, in particular, aluminum tanning agents.

REFERENCES:
Journal of American Leather Chem. Assoc., vol. 76, 1981, pp. 230-244.
Zhurnal Organicheskoi Khimii, vol. 7, No. 2, pp. 327-330, Feb., 1971.
CA 79(2):6818a (1973).

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