Process for producing sulfomethylamide polymers

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...

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5253294, C08F 834

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active

050047868

ABSTRACT:
Polyacrylamide is reacted with formaldehyde and bisulfite at a temperature of at least about 100.degree. C. and at an initial reaction mixture pH of less than about 12, preferably about 3 to about 8, to produce sulfomethylpolyacrylamide.

REFERENCES:
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patent: 4762894 (1988-08-01), Fong
Author: B. Jansan, G. Ellinghorst; Title: "Radiation Initiated Grafting of Hydrophillic & Reactive . . ."; Radiation Physical Chemistry, vol. 18, No. 5-6, pp. 1195-1102, 1981.
Author: Kh. Verani, I. Mladenov and M. Pundeva; Title: "Amination of Polyacrylonitrile Hydrolysate by the Hoffman Reaction"; Yearbook of the Institute of Chemical Technology--Bougas, vol. 10, 1973.
Author: Savitskaya, M. N. & Kholodova, Yu. D.; Title: "Polyacrylamide And its Derivatives"; Inst. of Plant Physiology, Ukr. S.S.R. Academy of Sciences (Mar. 18, 1963).

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