Toilet soap containing polymeric thickener

Claim 2

A toilet soap in a solid form devoid of cationic polumer selected from cellulose derivatives containing quaternary ammonium groups and cyclic polymers which soap had improved processability, improved texture, improved humectant properties, and improved lather quality and quantity comprising (a) a major proportion of a soap base selected from natural soap, synthetic detergent, and mixtures thereof; (b) an effective amount of a thickener having molecular weight in excess of about 750,000 selected from homopolymers of mono- and dicarboxylic acids of 3 to 5 carbon atoms and copolymers thereof with up to 75% by weight of one or more copolymerizable monomers, said copolymers containing polymerized therein not more than 30% by weight of an acrylic amide; homopolymers of lower alkyl acrylates and copolymers containing polymerized therein in excess of 50% by weight of said lower alkyl acrylates; salts of said thickeners; and mixtures of aid thickeners and salts thereof; and (c) from 0.01 to 10% of a crosslinking agent.

Claim 3

Toilet soap of claim 1 wherein amount of said thickener is about 0.2 to 1 weight percent, based on the weight of said soap; wherein said thickener is selected from homopolymers of an acrylic acid defined as follows: ##STR3## where R is selected from hydrogen, halogen, cyano, alkyl, aryl, aralkyl, alkaryl, and cycloaliphatic groups, and salts of said acid; copolymers of said acid or its salt with 1 to 50% by weight of one or more suitable comonomers; homopolymers of lower alkyl acrylates and copolymers thereof with one or more suitable comonomers; and mixtures thereof; and wherein molecular weight of said thickener is in the range of up to about 5,000,000.

Claim 4

Toilet soap of claim 2 wherein said thickener is selected from water-swellable homopolymers of acrylic acid itself or a salt thereof and copolymers of acrylic acid itself or a salt thereof with 1 to 50% by weight of one or more suitable comonomers; wherein said thickener has molecular weight of up to 4,000,000; and wherein amount of said crosslinker is about 0.01 to 2% by weight.

Claim 5

Toilet soap of claim 3 wherein said comonomers are selected from acrylates of the following formula: ##STR4## where R' is selected from hydrogen, methyl, and ethyl groups; and R is selected from alkyl groups of 10 to 30 carbon atoms and from alkyl, alkoxy, haloalkyl, and cyanoalkyl groups containing 1 to 9 carbon atoms; and wherein said crosslinking agent is selected from allyl sucross, allyl pentaerythritol, trimethylolpropane diallyl ether, and mixtures thereof.

Claim 6

Toilet soap of claim 3 wherein said comononers are selected from alkyl acrylates and methacrylates containg 1 to 20 carbon atoms in the alkyl group, acrylonitrile, methacrylonitrile, acrylamide, methacrylamide, N-methyl acrylamide, N-t-butyl acrylamide, N-methylol acrylamide, N-ethanol acrylamide, N-methylol methacrylamide, N-ethanol methacrylamide, N-methylol-p-vinyl benzene, N-butoxymethyl acylamide, ethylene, proplene, butadiene, vinyl acetate, styrene, vinyl methyl ether, methyl vinyl ketone, alpha-cyanomethyl acrylate, vinyl cloride, vinylidene cloride, and mixtures thereof.

Claim 7

Toilet soap of claim 2 wherein said acrylic acid is selected from acrylic acid, methacrylic acid, and mixtures of such acids; and amount of said comonomers is 1 to 50% by weight which are selected from alkyl acrylates and methacrylates containing 1 to 20 carbon atoms in the alkyl group; said homopolymers and copolymers, in acid or salt form, have molecular weight in the range of up to about 4,000,000.

Claim 8

Toilet soap of claim 2 wherein said thickener is selected from homopolymers of acrylic acid; homopolymers of methacrylic acid; and copolymers of an acrylic acid selected from acrylic acid itself, methacrylic acid, and mixtures thereof, with one or more comonomers selected from alkyl acrylates and methacrylates containing 1 to 20 carbon atoms, said copolymers containing about 15 to 30% by weight one or more polymerized comonomers; wherein molecular weight of said thickener is in the range of up to about 4,000,000; and wherein said crosslinking agent is selected from allyl sucrose, allyl pentaerythritol, trimethylolpropane diallyl ether, and mixtures thereof.

Claim 9

A toilet soap selected from soap bars and soap flakes devoid of cationic polymers selected from cellulose devatives containing quaternary ammonium groups and cyclic polymers which soap has improved processability, improved texture, improved humectant properties, and improved lather quality and quantity comprising (a) a major proportion of a soap base selected from natural soap, synthetic detergent, and mixtures thereof; (b) an effective amount of a thickener having molecular weight in excess of about 750,000 selected from homopolymers of monounsaturated monocarboxylic and dicarboxylic acids of 3 to 5 carbon atoms and copolymers thereof with up to 75% by weight of one or more copolymerizable monomers, said copolymers containing polymerized therein not more than 30% by weight of an acrylic amide; homopolymers of lower alkyl acrylates and copolymers thereof with one or more suitable comonomers, said copolymers containing polymerized therein in excess of 50% by weight of lower alkyl acrylates; salts of said thickeners; and mixtures of said thickeners and salts thereof; and (c) form 0.01 to 10% of a crosslinking agent.

Claim 10

A toilet soap selected from soap bars and soap flakes devoid of cationic polymers selected from cellulose devatives containing quaternary ammonium groups and cyclic polymers which soap has improved processability, improved texture, improved humectant properties, and improved lather quality and quantity comprising (a) a major proportion of a soap base selected from natural soap, synthetic detergent, and mixtures thereof; (b) an effective amount of a thickener having molecular weight in excess of about 750,000 selected from homopolymers of monounsaturated monocarboxylic and dicarboxylic acids of 3 to 5 carbon atoms and copolymers thereof with up to 75% by weight of one or more copolymerizable monomers, said copolymers containing polymerized therein not more than 30% by weight of an acrylic amide; homopolymers of lower alkyl acrylates and copolymers thereof with one or more suitable comonomers, said copolymers containing polymerized therein in excess of 50% by weight of lower alkyl acrylates; salts of said thickeners; and mixtures of said thickeners and salts thereof; and (c) form 0.01 to 10% of a crosslinking agent.

Claim 11

Toilet soap of claim 8 wherein amount of said thickener is 0.2-1% by weight, based on the weight of said toilet soap; and wherein said natural soap comprises a mixture of salts of fatty acids of 12 to 18 carbon atoms and said synthetic detergent comprises 30 to 70 weight parts surfactant, 10 to 30 weight parts plasticizer/binder, 10 to 30 weight parts filler, 3 to 10 weight parts water, and up to 20 weight parts additives that excludes said thickener.

Claim 12

Toilet soap of claim 9 wherein said thickener is water-swellable and is selected from homopolymers of monounsaturated monocarboxylic and dicarboxylic acids of 3 to 5 carbon atoms, and salts thereof, and copolymers thereof with 1 to 50% by weight of one or more copolymerizable monomers; homopolymers of lower alkyl acrylates and copolymers thereof with one or more suitable comonomers; and mixtures thereof.

Claim 13

Toilet soap of claim 10 wherein said thickener is selected from homopolymers of an acrylic acid defined as follows: ##STR5## where R is selected from hydrogen, halogen, cyano, alkyl, aryl, aralkyl, and cycloaliphtic groups, and salts of said acid; copolymers of said acid or its salt with 1 to 50% by weight of one or more suitable comonomers; homopolymers of lower alkyl acrylates and copolymers thereof with one or more suitable comonomers; and mixtures thereof.

Claim 14

Toilet soap of claim 11 wherein said thickener is water-swellable selected from homopolymers of acrylic acid itself or a salt thereof and copolymers of acrylic acid itself or a salt thereof with 1 to 50% by weight of one or more suitable comonomers selected from alkyl acrylates and methacrylates of 1 to 20 carbon atoms in the alkyl group; wherein said homopolymers and copolymers, in acid or salt form, have molecular weight in the range of about up to about 5,000,000; and wherein amount of said crosslinker is about 0.01 to 2% by weight.

Claim 15

Toilet soap of claim 12 wherein said thickener is water-swellable polyacrylic acid homopolymer having molecular weight of up to about 4,000,000; and wherein said crosslinking agent is selected from allyl sucrose, allyl pentaerythritol, trimethylolpropane diallyl ether, and mixtures thereof.