Reaction products of a polyacrylamide formaldehyde, a secondary

Details Reaction products of a polyacrylamide formaldehyde, a secondary Reaction products of a polyacrylamide formaldehyde, a secondary

1978-11-24

1981-02-17

Schofer, Joseph L.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

525157, 525158, 525160, 525161, 525162, 525163, 525164, 525336, 525375, 525379, 525380, 162168NA, C08F 828, C08L 6102, C08L 6120

Patent

active

042514100

ABSTRACT:
The reaction between (a) a polymerisate of acrylamide and/or methacrylamide and optionally of one or more further types of polymerizable ethylenic-unsaturated monomers, (b) formaldehyde, (c) a secondary amine and (d) a functional derivative of an acid having stabilizing properties against further polymerization of (a) and containing in the functional radical at least one NH group capable of entering into equilibrium reaction with formaldehyde under the reaction conditions used, e.g. urea, under neutral or basic conditions and in certain molar ratios, produces products, which in free base, acid addition salt or quaternary ammonium salt form are useful as flocculation agents, and particularly as retention aids for paper manufacture.

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Indust. & Eng. Chem., vol. 48 #12, pp. 2132-2137.
Chem. Abs. 81, 4379(a) 1974.
JACS, 66, pp. 222-225.

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