Modified sulfonated resin surfactants

Details Modified sulfonated resin surfactants Modified sulfonated resin surfactants

1974-02-25

1976-01-20

Schofer, Joseph L.

Bleaching and dyeing; fluid treatment and chemical modification

Treatment of hides, skins, feathers and animal tissues

Tanning

8 82, 8 89, 8173, C09B 900, C09B 4900, D06P 504

Patent

active

039334244

ABSTRACT:
The surfactants of this invention are phenolic-formaldehyde resins that have been sulfomethylated with from 1-13 moles of sulfomethylation per 1000 grams of the starting resin and further modified by reaction with up to 20 moles, preferably 0.25 to 10 moles, per 1000 grams of starting resin of a blocking agent of the type X(CHR).sub.m (CH.sub.2).sub.n Y, wherein X is a halogen, an activated double bond, epoxy ring or halohydrin, Y is a property group such as sulfonate, phosphonate, carboxylate or hydroxyl, R is another property group such as hydrogen, hydroxyl, mercaptan or amine, and n and m are integers from 0 to 5, with n or m being at least 1, to at least partially block the phenolic hydroxyl group of the resin. The phenolic-formaldehyde resin may also be cross-linked to tailor its molecular weight and then treated with urea or ammonia, if desired.

REFERENCES:
patent: 3065039 (1962-11-01), Komarek et al.
patent: 3108087 (1963-10-01), Kirkpatrick et al.
patent: 3606988 (1971-09-01), Walz et al.

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