Stabilization of dilute aqueous solutions of high molecular weig

Details Stabilization of dilute aqueous solutions of high molecular weig Stabilization of dilute aqueous solutions of high molecular weig

1984-09-24

1986-04-08

Ivy, C. Warren

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

523175, 524123, 524124, 524239, 524418, 524419, 524521, 524555, 252 855D, C08K 332, C08K 553, C08K 517, C08K 330

Patent

active

045814058

ABSTRACT:
Dilute aqueous solutions of high molecular weight polymers of acrylamide or methacrylamide or of homopolymers or copolymers of salts of ethylenically unsaturated C.sub.3 -C.sub.5 -carboxylic acids are stabilized to thermal degradation by adding (a) at least 20 ppm of an inorganic sulfur compound, in which the sulfur has an oxidation number of +2 to +5, and (b) at least 20 ppm of a complexing agent for metal ions.

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Periodic Table of Elements, Side 1, Sargent-Welch Scientific Company, 1979.
Chemical Abstracts, 82, 1975, 172029.
Chemical Abstracts, 91, 1979, 176219.

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