Freeze-thaw stable polyacrylamide emulsions

Details Freeze-thaw stable polyacrylamide emulsions Freeze-thaw stable polyacrylamide emulsions

1990-08-27

1992-05-05

Michl, Paul R.

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...

524801, C08F 232, C08J 300, C08K 506

Patent

active

051108534

ABSTRACT:
Water-in-oil emulsions of water-soluble polymers, i.e. polyacrylamides, which are subject to freeze-thaw degradation are stabilized against repeated freeze-thaw cycles by incorporating specific ethoxylated alkylphenol surfactants containing low levels of ethoxylation. Moreover, the resultant emulsions exhibit superior resistance to sheet gel formation under ambient storage conditions.

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patent: 4022736 (1977-05-01), Schmitt
patent: 4052353 (1977-10-01), Scanley
patent: 4171296 (1979-10-01), Connelly et al.
patent: 4435528 (1984-03-01), Domina
patent: 4506051 (1985-03-01), Rance
patent: 4785036 (1988-11-01), Robinson et al.

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