Preparation of water-soluble or self-dispersing resin tanning ag

Details Preparation of water-soluble or self-dispersing resin tanning ag Preparation of water-soluble or self-dispersing resin tanning ag

1982-04-09

1983-09-13

Phynes, Lucille M.

Bleaching and dyeing; fluid treatment and chemical modification

Treatment of hides, skins, feathers and animal tissues

Tanning

8 9421, 528239, 528242, 528254, 528256, C14C 318

Patent

active

044039930

ABSTRACT:
Water-soluble or self-dispersing resin tanning agents are prepared by heating from 5 to 30% by weight of melamine, from 15 to 45% by weight of urea, from 20 to 35% by weight (calculated as anhydrous material) of formaldehyde and from 15 to 55% by weight of sodium bisulfite or of a corresponding amount of some other salt of sulfurous acid for from two to twelve hours in aqueous solution at 40.degree.-120.degree. C. and a pH of from 5 to 9.

REFERENCES:
patent: 3023073 (1962-02-01), Plapper et al.
patent: 3852471 (1974-12-01), Paulus et al.
patent: 4001157 (1977-01-01), Sander et al.
patent: 4132522 (1979-01-01), Fono et al.

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