Viscoelastic cleaning compositions with long relaxation times
AssigneeThe Clorox Company
InventorWilliam L. Smith
Life of this patent
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Abstract
A thickened aqueous cleaning composition is viscoelastic, with a long relaxation time to provide a thick solution with consumer-acceptable pour properties. The composition has utility as a drain opening composition or as a hard surface cleaner having a cleaning-effective residence time on non-horizontal surfaces. The composition includes a cleaning active, and a binary thickener comprising a betaine or sulfobetaine having a C.sub.14-18 alkyl, or C.sub.10-18 alkylamino or alkylamido group, and an organic, anionic counterion. The composition preferably has a relaxation time of at least about 5 seconds and a relative elasticity between about 10-500 sec/Pa.
Claims14
A thickened cleaning composition having a viscoelastic rheology comprising, in aqueous solution
- (a) an active cleaning compound, present in a cleaning effective amount;
- and
- (b) a viscoelastic thickening system consisting essentially of a betaine or sulfobetaine having a C.sub.14-18 alkyl group, or a C.sub.10-18 alkylamino or alkylamido group;
- and an anionic organic counterion, selected from the group consisting of C.sub.2-6 alkyl carboxylates, aryl carboxylates, C.sub.2-10 alkyl sulphonates, aryl sulphonates, sulfated C.sub.2-10 alkyl alcohols, sulfated aryl alcohols, and mixtures thereof;
- and wherein the betaine and counterion are present in an amount to thicken and result in a viscoelastic rheology.
A thickened viscoelastic drain opening composition comprising, in aqueous solution
- (a) a drain opening active, selected from the group consisting of acids, bases, oxidants, reductants, solvents, enzymes, detergents, thioorganic compounds, and mixtures thereof;
- and
- (b) a viscoelastic thickening system consisting essentially of a betaine or sulfobetaine having a C.sub.14-18 alkyl group, or a C.sub.10-18 alkylamino or alkylamido group;
- and an anionic organic counterion, selected from the group consisting of C.sub.2-6 alkyl carboxylates, aryl carboxylates, C.sub.2-10 alkyl sulphonates, aryl sulphonates, sulfated C.sub.2-10 alkyl alcohols, sulfated aryl alcohols and mixtures thereof;
- and wherein the betaine and counterion are present in an amount to thicken and result in a composition relative elasticity between about 10-500 sec/Pa.
A thickened viscoelastic drain opening composition comprising, in aqueous solution
- (a) an alkali metal hydroxide;
- (b) an alkali metal hypochlorite;
- and
- (c) a viscoelastic thickening system, consisting essentially of a C.sub.14-18 alkyl betaine or sulfobetaine;
- and an anionic organic counterion, selected from the group consisting of C.sub.2-6 alkyl carboxylates, aryl carboxylates, C.sub.2-10 alkyl sulphonates, aryl sulphonates, sulfated C.sub.2-10 alkyl alcohols, sulfated aryl alcohols and mixtures thereof;
- and wherein
- (c) is present in an amount sufficient to thicken and result in a relative elasticity between about 10-500 sec/Pa, a density greater than that of water, and a viscosity of at least about 20 cP.
A thickened viscoelastic hypochlorite composition comprising, in aqueous solution
- (a) a hypochlorite-producing source, present in an amount sufficient to produce a bleaching-effective amount of hypochlorite;
- and
- (b) a viscoelastic thickening system, consisting essentially of a C.sub.14-18 alkyl betaine or sulfobetaine;
- and an anionic organic bleach-resistant counterion, selected from the group consisting of C.sub.2-6 alkyl carboxylates, aryl carboxylates, C.sub.2-10 alkyl sulphonates, aryl sulphonates, C.sub.2-10 sulfated alkyl alcohols, aryl alcohols, and mixtures thereof;
- and wherein
- (c) is present in an amount to thicken and result in a relative elasticity between about 10-500 sec/Pa, and a viscosity of at least about 20 cP.
Dependencies are inferred from the claim text.