Aqueous compositions thickened with acrylate-based polymeric rhe

Details Aqueous compositions thickened with acrylate-based polymeric rhe Aqueous compositions thickened with acrylate-based polymeric rhe

1997-08-13

1998-11-24

Reddick, Judy M.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524140, 524147, 524157, 524161, 524284, 524300, 524320, 524321, 524366, 524376, 524378, 524401, 524417, 524419, C08K 541

Patent

active

058407898

ABSTRACT:
The present invention relates to aqueous compositions having pH of less than or equal to about 11 and which contain a thickening amount of an acrylate-based rheology modifier, which modifier contains an emulsion which is prepared by single-stage emulsion polymerization of a C.sub.2 -C.sub.6 alkyl ester of acrylic acid and/or a C.sub.1 -C.sub.6 alkyl ester of methacrylic acid, a monomer chosen from a vinyl-substituted heterocyclic compound containing at least one of a nitrogen or sulfur atom, (meth)acrylamide, a mono- or di-(C.sub.1 -C.sub.4)alkylamino (C.sub.1 -C.sub.4)alkyl (meth)acrylate, a mono or di-(C.sub.1 -C.sub.4)alkylamino (C.sub.1 -C.sub.4)alkyl (meth)acrylamide, and optionally cross-linking monomers and/or associative monomers, in the presence of water, a first surfactant, a free-radical initiator and an alcohol selected from C.sub.2 -C.sub.12 linear or branched alcohols, ethylene glycol, propylene glycol and glycerol, or mixtures thereof, and essentially in the absence of a polymeric colloidal stabilizer such as polyvinyl alcohol, and which compositions further contain an active ingredient selected from the group consisting of an acid and a second surfactant which may be the same as or different than the first surfactant.

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