US4830774A
Expired / Lapsed
US
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Antidandruff shampoo composition having improved suspension properties
Assignee: Helene Curtis Inc
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Filing: 1987-12-11
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Granted: 1989-05-16
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Expires: 2007-12-11
Abstract
Abstract An antidandruff shampoo composition includes a suspension composition for particulate matter to achieve an unexpected reduction in shampoo separation while maintaining acceptable shampoo viscosities and foaming levels. The suspension composition includes a suspending alkanolamide and/or a wax ester in conjunction with an ethylene-maleic anhydride resin or a polyacrylic acid resin to yield anionic surfactant-based antidandruff shampoos of improved stability and aesthetics.
Inventors
- 👤 Donna M. LaPetina
- 👤 Chaitanya Patel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:20
CPC Classifications
A; A61; A61Q; A61Q5/00; A61Q5/006; A61K; A61K8/00; A61K8/02; A61K8/04; A61K8/044; A61K8/18; A61K8/30; A61K8/40; A61K8/42; A61K8/49; A61K8/4906; A61K8/4933; A61K8/72; A61K8/81; A61K8/8141; A61K8/8147; A61K8/8164; A61Q5/02
Claims Analysis
Total Claims: 57
Claim 1
Independent Claim
96 words
An antidandruff shampoo comprising an anionic surfactant in an amount of about 5% to about 20% by weight; a particulate antidandruff agent in an amount of about 0.2% to about 5% by weight; a water insoluble suspending agent, solid at room temperature, selected from the group consisting of a suspending alkanolamide, a wax ester, and mixtures thereof, in an amount of about 1% to about 3% by weight; a crosslinked ethylene maleic anhydride resin containing a plurality of neutralized carboxyl groups in an amount of about 0.3% to about 1% by weight; and a liquid carrier.
Claim 2
Dependent Claim
96 words
An antidandruff shampoo comprising an anionic surfactant in an amount of about 5% to about 20% by weight; a particulate antidandruff agent in an amount of about 0.2% to about 5% by weight; a water insoluble suspending agent, solid at room temperature, selected from the group consisting of a suspending alkanolamide, a wax ester, and mixtures thereof, in an amount of about 1% to about 3% by weight; a crosslinked ethylene maleic anhydride resin containing a plurality of neutralized carboxyl groups in an amount of about 0.3% to about 1% by weight; and a liquid carrier.
Claim 3
Dependent Claim
53 words
The antidandruff shampoo of claim 1 further comprising from about 1% to about 10% by weight of an amphoteric surfactant selected from the group consisting of alkyl betaines containing 8 to 18 carbon atoms, alkylamidopropyl betaines containing 8 to 18 carbon atoms, alkylamidopropyl sulfobetaines containing 8 to 18 carbon atoms and mixtures thereof.
Claim 4
Dependent Claim
44 words
The antidandruff shampoo of claim 1, wherein the anionic surfactant is an ammonium alkyl sulfate, sodium alkyl sulfate, triethanolamine alkyl sulfate, monoethanolamine alkyl sulfate, ammonium alkyl ether sulfate containing 3 moles of ethoxylation, ammonium nonylphenoxy(ethyleneoxy) sulfates containing 4 moles of ethoxylation or mixtures thereof.
Claim 5
Dependent Claim
24 words
The antidandruff shampoo of claim 3, wherein the anionic surfactant is ammonium lauryl sulfate or ammonium lauryl ether sulfate containing 3 moles of ethoxylation.
Claim 6
Dependent Claim
21 words
The antidandruff shampoo of claim 1 further including a nonionic surfactant in an amount of 1% to about 10% by weight.
Claim 7
Dependent Claim
22 words
The antidandruff shampoo of claim 5, wherein the nonionic surfactant is coconut diethanolamide, coconut monoethanolamide, lauric diethanloamide, lauric monoethanolamide or mixtures thereof.
Claim 8
Dependent Claim
23 words
The antidandruff shampoo of claim 1, wherein the suspending alkanolamide is stearamide MEA stearate, stearamide DEA stearate, stearamide DIBA stearate or mixtures thereof.
Claim 9
Dependent Claim
14 words
The antidandruff shampoo of claim 7, wherein the suspending alkanolamide is stearamide MEA stearate.
Claim 10
Dependent Claim
40 words
The antidandruff shampoo of claim 1, wherein the wax ester is stearyl stearate, myristyl stearate, cetyl stearate, myristyl myristate, cetyl myristate, ethylene glycol monostearate, ethylene glycol distearate, diethylene glycol distearate, propylene glycol monostearate, propylene glycol distearate or propylene glycol monolaurate.
Claim 11
Dependent Claim
19 words
The antidandruff shampoo of claim 9, wherein the wax ester is stearyl stearate, myristyl myristate, or ethylene glycol distearate.
Claim 12
Dependent Claim
16 words
The antidandruff shampoo of claim 9, wherein the wax ester is stearyl stearate or myristyl myristate.
Claim 13
Dependent Claim
29 words
The antidandruff shampoo of claim 1, wherein the suspending alkanolamide, wax ester or mixtures thereof are present in an amount of from about 1.5% to about 2.5% by weight.
Claim 14
Dependent Claim
22 words
The antidandruff shampoo of claim 1, wherein the polymer is present in an amount of about 0.5% to about 1.0% by weight.
Claim 15
Dependent Claim
31 words
The antidandruff shampoo of claim 1, wherein the crosslinked ethylene maleic anhydride resin is neutralized with an alkali metal hydroxide, ammonium hydroxide or alkyl (C 1 to C 4 ) amine.
Claim 16
Dependent Claim
16 words
The antidandruff shampoo of claim 1, wherein the particulate antidandruff agent is zinc pyrithione or sulfur.
Claim 17
Dependent Claim
59 words
A suspending composition for suspending particulate matter in an anionic surfactant-based liquid carrier composition comprising: a suspending alkanolamide, wax ester or mixtures thereof in an amount of about 1% to about 3% by weight; and a crosslinked ethylene maleic anhydride polymer containing a plurality of neutralized carboxyl groups in an amount of about 0.3% to about 1% by weight.
Claim 18
Dependent Claim
59 words
A suspending composition for suspending particulate matter in an anionic surfactant-based liquid carrier composition comprising: a suspending alkanolamide, wax ester or mixtures thereof in an amount of about 1% to about 3% by weight; and a crosslinked ethylene maleic anhydride polymer containing a plurality of neutralized carboxyl groups in an amount of about 0.3% to about 1% by weight.
Claim 19
Dependent Claim
22 words
The composition of claim 16, wherein the suspending alkanolamide is stearamide MEA stearate, stearamide DEA stearate, stearamide DIBA stearate or mixtures thereof.
Claim 20
Dependent Claim
18 words
The composition of claim 17, wherein the suspending alkanolamide is stearamide MEA stearate and the carrier comprises water.
Claim 21
Dependent Claim
34 words
The suspension system of claim 16, wherein the wax ester is stearyl stearate myristyl stearate, cetyl stearate, myristyl myristate, cetyl myristate, ethylene glycol distearate, propylene glycol monostearate, propylene glycol distearate or propylene glycol monolaurate.
Claim 22
Dependent Claim
15 words
The composition of claim 19, wherein the wax ester is stearyl stearate or myristyl myristate.
Claim 23
Dependent Claim
28 words
The composition of claim 16, wherein the suspending alkanolamide, wax ester or mixtures thereof are present in an amount of from about 1.5% to about 2.5% by weight.
Claim 24
Dependent Claim
27 words
The composition according to claim 16 wherein the polymer is neutralized with an alkali metal hydroxide, ammonium hydroxide or alkyl (C 1 to C 4 ) amine.
Claim 25
Dependent Claim
102 words
An antidandruff hair shampoo composition comprising a topically effective amount of a particulate, water insoluble antidandruff agent; a water soluble anionic sulfate detergent containing 8 to 22 carbon atoms; a water dispersible nonionic fatty acid alkanolamide containing from about 8 to about 14 carbon atoms; a crosslinked ethylene maleic anhydride resin containing a plurality of neutralized carboxyl groups in an amount of about 0.3% to about 1.0% by weight; and at least about 1.0% by weight of a water insoluble fatty acid alkanolamide or water insoluble fatty acid ester containing from about 16 to about 22 carbon atoms in a suitable carrier.
Claim 26
Dependent Claim
102 words
An antidandruff hair shampoo composition comprising a topically effective amount of a particulate, water insoluble antidandruff agent; a water soluble anionic sulfate detergent containing 8 to 22 carbon atoms; a water dispersible nonionic fatty acid alkanolamide containing from about 8 to about 14 carbon atoms; a crosslinked ethylene maleic anhydride resin containing a plurality of neutralized carboxyl groups in an amount of about 0.3% to about 1.0% by weight; and at least about 1.0% by weight of a water insoluble fatty acid alkanolamide or water insoluble fatty acid ester containing from about 16 to about 22 carbon atoms in a suitable carrier.
Claim 27
Dependent Claim
17 words
The composition of claim 23, wherein the composition has a pH of about 5.0 to about 6.5.
Claim 28
Dependent Claim
22 words
The composition of claim 23, wherein the anionic sulfate is present in an amount of about 5% to about 20% by weight.
Claim 29
Dependent Claim
23 words
The composition of claim 23, wherein the water dispersible fatty acid alkanolamide is present in an amount of about 1% to about 10%.
Claim 30
Dependent Claim
15 words
The composition of claim 23, wherein the crosslinked neutralized resin is a neutralized ethylene-maleic anhydride.
Claim 31
Dependent Claim
31 words
The composition of claim 23, wherein the water insoluble fatty acid alkanolamide or ester is stearyl stearate, myristyl myristate, stearamide MEA stearate, stearamide DEA stearate, ethylene glycol distearate or mixtures thereof.
Claim 32
Dependent Claim
10 words
The composition of claim 23, wherein the carrier comprises water.
Claim 33
Independent Claim
94 words
A method of treating dandruff and cleansing human hair comprising contacting the hair with a composition comprising a topically effective amount of a particulat antidandruff agent homogeneously dispersed and suspended in a water soluble anionic sulfate detergent containing 8 to 22 carbon atoms; a cross-linked ethylene maleic anhydride resin containing a plurality of neutralized carboxyl groups in an amount of about 0.3% to about 1.0% by weight; and about 1.0% to about 3.0% by weight of a water insoluble fatty acid alkanolamide or wax ester in a suitable carrier; and thereafter rinsing the hair.
Claim 34
Independent Claim
94 words
A method of treating dandruff and cleansing human hair comprising contacting the hair with a composition comprising a topically effective amount of a particulat antidandruff agent homogeneously dispersed and suspended in a water soluble anionic sulfate detergent containing 8 to 22 carbon atoms; a cross-linked ethylene maleic anhydride resin containing a plurality of neutralized carboxyl groups in an amount of about 0.3% to about 1.0% by weight; and about 1.0% to about 3.0% by weight of a water insoluble fatty acid alkanolamide or wax ester in a suitable carrier; and thereafter rinsing the hair.
Claim 35
Dependent Claim
37 words
The method of claim 30, wherein the anionic sulfate is ammonium lauryl sulfate or ammonium lauryl ether sulfate containing 3 moles of ethoxylation and is present in an amount of about 5% to about 20% by weight.
Claim 36
Dependent Claim
18 words
The method of claim 30 wherein the resin is present from about 0.3% to about 0.6% by weight.
Claim 37
Dependent Claim
43 words
The method of claim 30, wherein the water insoluble fatty acid alkanolamide or wax ester is stearyl stearate, myristyl myristate, stearamide MEA stearate, stearamide DEA stearate or mixtures thereof, and are present in an amount of about 1.0% to about 3.0% by weight.
Claim 38
Dependent Claim
10 words
The method of claim 30, wherein the carrier comprises water.
Claim 39
Dependent Claim
89 words
An antidandruff shampoo comprising an anionic surfactant in an amount of about 5% to about 20% by weight; a particulate antidandruff agent in an amount of about 0.2% to about 5% by weight; a water insoluble suspending agent, solid at room temperature, selected from the group consisting of a suspending alkanolamide, a wax ester, and mixtures thereof, in an amount of about 1% to about 3% by weight; a cross-linked ethylene maleic anhydride resin in an amount of about 0.6% to about 1% by weight; and a liquid carrier.
Claim 40
Dependent Claim
89 words
An antidandruff shampoo comprising an anionic surfactant in an amount of about 5% to about 20% by weight; a particulate antidandruff agent in an amount of about 0.2% to about 5% by weight; a water insoluble suspending agent, solid at room temperature, selected from the group consisting of a suspending alkanolamide, a wax ester, and mixtures thereof, in an amount of about 1% to about 3% by weight; a cross-linked ethylene maleic anhydride resin in an amount of about 0.6% to about 1% by weight; and a liquid carrier.
Claim 41
Dependent Claim
89 words
An antidandruff shampoo comprising an anionic surfactant in an amount of about 5% to about 20% by weight; a particulate antidandruff agent in an amount of about 0.2% to about 5% by weight; a water insoluble suspending agent, solid at room temperature, selected from the group consisting of a suspending alkanolamide, a wax ester, and mixtures thereof, in an amount of about 1% to about 3% by weight; a cross-linked ethylene maleic anhydride resin in an amount of about 0.3% to about 1% by weight; and a liquid carrier.
Claim 42
Dependent Claim
89 words
An antidandruff shampoo comprising an anionic surfactant in an amount of about 5% to about 20% by weight; a particulate antidandruff agent in an amount of about 0.2% to about 5% by weight; a water insoluble suspending agent, solid at room temperature, selected from the group consisting of a suspending alkanolamide, a wax ester, and mixtures thereof, in an amount of about 1% to about 3% by weight; a cross-linked ethylene maleic anhydride resin in an amount of about 0.3% to about 1% by weight; and a liquid carrier.
Claim 43
Dependent Claim
81 words
An antidandruff shampoo comprising an anionic surfactant in an amount of about 5% to about 20% by weight; a particulate antidandruff agent in an amount of about 0.2% to about 5% by weight; a water insoluble suspending alkanolamide, solid at room temperature, in an amount of about 1% to about 3% by weight; a crosslinked ethylene maleic anhydride resin containing a plurality of neutralized carboxyl groups in an amount of about 0.3% to about 1% by weight; and a liquid carrier.
Claim 44
Dependent Claim
81 words
An antidandruff shampoo comprising an anionic surfactant in an amount of about 5% to about 20% by weight; a particulate antidandruff agent in an amount of about 0.2% to about 5% by weight; a water insoluble suspending alkanolamide, solid at room temperature, in an amount of about 1% to about 3% by weight; a crosslinked ethylene maleic anhydride resin containing a plurality of neutralized carboxyl groups in an amount of about 0.3% to about 1% by weight; and a liquid carrier.
Claim 45
Dependent Claim
82 words
An antidandruff shampoo comprising an anionic surfactant in an amount of about 5% to about 20% by weight; a particulate antidandruff agent in an amount of about 0.2% to about 5% by weight; a water insoluble suspending wax ester, solid at room temperature, in an amount of about 1% to about 3% by weight; a crosslinked ethylene maleic anhydride resin containing a plurality of neutralized carboxyl groups in an amount of about 0.3% to about 1% by weight; and a liquid carrier.
Claim 46
Dependent Claim
82 words
An antidandruff shampoo comprising an anionic surfactant in an amount of about 5% to about 20% by weight; a particulate antidandruff agent in an amount of about 0.2% to about 5% by weight; a water insoluble suspending wax ester, solid at room temperature, in an amount of about 1% to about 3% by weight; a crosslinked ethylene maleic anhydride resin containing a plurality of neutralized carboxyl groups in an amount of about 0.3% to about 1% by weight; and a liquid carrier.
Claim 47
Dependent Claim
36 words
The antidandruff shampoo of claim 38, wherein the wax ester is selected from the group consisting of ethylene glycol monostearate, ethylene glycol distearate, diethylene glycol distearate, propylene glycol monostearate, propylene glycol distearate or propylene glycol monolaurate.
Claim 48
Dependent Claim
90 words
An antidandruff hair shampoo composition comprising a topically effective amount of a particulate, water insoluble antidandruff agent; a water soluble anionic sulfate detergent containing 8 to 22 carbon atoms; a water dispersible nonionic fatty acid alkanolamide containing from about 8 to about 14 carbon atoms; a crosslinked ethylene maleic anhydride resin containing a plurality of neutralized carboxyl groups in an amount of about 0.3% to about 1.0% by weight; and a water insoluble fatty acid ester in an amount of at least about 1% by weight in a suitable carrier.
Claim 49
Dependent Claim
90 words
An antidandruff hair shampoo composition comprising a topically effective amount of a particulate, water insoluble antidandruff agent; a water soluble anionic sulfate detergent containing 8 to 22 carbon atoms; a water dispersible nonionic fatty acid alkanolamide containing from about 8 to about 14 carbon atoms; a crosslinked ethylene maleic anhydride resin containing a plurality of neutralized carboxyl groups in an amount of about 0.3% to about 1.0% by weight; and a water insoluble fatty acid ester in an amount of at least about 1% by weight in a suitable carrier.
Claim 50
Dependent Claim
24 words
The antidandruff hair shampoo of claim 40 wherein the fatty acid of the water insoluble fatty acid ester is lauric acid or stearic acid.
Claim 51
Dependent Claim
19 words
The antidandruff hair shampoo of claim 40 wherein the glycol of the ester is ethylene glycol or propylene glycol.
Claim 52
Dependent Claim
38 words
The antidandruff hair shampoo of claim 40 wherein the water insoluble fatty acid ester or is selected from the group consisting of ethylene glycol monostearate, ethylene glycol distearate, propylene glycol distearate and propylene glycol monolaurate; or mixtures thereof.
Claim 53
Independent Claim
94 words
A method of treating dandruff and cleansing human hair comprising contacting the hair with a composition comprising a topically effective amount of a particulate antidandruff agent homogeneously dispersed and suspended in a water soluble anionic sulfate detergent containing 8 to 22 carbon atoms; a crosslinked ethylene maleic anhydride resin containing a plurality of neutralized carboxyl groups in an amount of about 0.3% to about 1.0% by weight; and a water insoluble fatty acid wax ester in an amount of at least about 1% by weight in a suitable carrier; and thereafter rinsing the hair.
Claim 54
Independent Claim
94 words
A method of treating dandruff and cleansing human hair comprising contacting the hair with a composition comprising a topically effective amount of a particulate antidandruff agent homogeneously dispersed and suspended in a water soluble anionic sulfate detergent containing 8 to 22 carbon atoms; a crosslinked ethylene maleic anhydride resin containing a plurality of neutralized carboxyl groups in an amount of about 0.3% to about 1.0% by weight; and a water insoluble fatty acid wax ester in an amount of at least about 1% by weight in a suitable carrier; and thereafter rinsing the hair.
Claim 55
Dependent Claim
19 words
The method of claim 44 wherein the fatty acid of the wax ester is lauric acid or stearic acid.
Claim 56
Dependent Claim
17 words
The method of claim 44 wherein the glycol of the ester is ethylene glycol or propylene glycol.
Claim 57
Dependent Claim
32 words
The method of claim 44 wherein the wax ester is selected from the group consisting of ethylene glycol monostearate, ethylene glycol distearate, propylene glycol distearate and propylene glycol monolaurate; or mixtures thereof.
References Cited (Backward Citations)
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