Caustic-stable modified polycarboxylate compound and method of making the same
AssigneeDiversey, Inc.
InventorsDonald Borseth, David McCall
Life of this patent
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Abstract
A surfactant-modified polymer and method of making the same. The surfactant-modified polymer has a polycarboxylate backbone with non-ionic surfactant chemically associated therewith and is formed by the reaction of a reactant compound selected from the group consisting of carboxylic acids, polycarboxylic acids and mixtures thereof in an aqueous media in the presence of a nonionic surfactant.
Claims16
A surfactant modified polymeric emulsion detergent stabilizer consisting essentially of:
- (a) from about 2 to 7 percent, by weight, based on the total weight of the stabilizer, of a non-ionic surfactant;
- (b) from about 3 to 35 percent, by weight, based on the total weight, of a polycarboxylic acid;
- (c) at least 58 percent water, by weight, based on the total weight;
- and
- wherein at least 0.5 percent, by weight, based on the total polymer weight, of the non-ionic surfactant is grafted onto the acid, the acid defining a polymeric backbone.
A surfactant-modified polymeric emulsion stabilizer which is produced by reacting (a) from about 0.1 to about 2.5 weight percent of an initiator selected from the group consisting of alkali metal persulfates, ammonium persulfates, azobis-(isobutyronitriles), t-butyl hydroperoxide and mixtures thereof with (b) from about 3 to about 35 weight percent of a polycarboxylic polymeric backbone and (c) from about 2.0 to about 7.0 weight percent of either an ethoxylated anionic surfactant or a non-ionic surfactant, the reacting being carried out in at least about 58 weight percent of water, the reaction proceeding at a temperature of 100.degree. F. to 212.degree. F. for a period of time ranging from between about 30 minutes and about 24 hours and a pH of between 2.3 and 6.0.
Dependencies are inferred from the claim text.