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US4528111A Expired / Lapsed US ⏱️ 0.0 years remaining

Shaving cream gel containing interpolymer reaction product of selected cationic polymers and anionic polymers

Assignee: Colgate Palmolive Co
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Filing: 1983-12-22
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Granted: 1985-07-09
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Expires: 2003-12-22
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Abstract

Abstract A stable shaving cream gel having superior foaming and after-feel characteristics containing as the essential ingredient a water soluble gel which is the interpolymer reaction product of a quaternized cationic polymer selected from the group consisting of poly(diallyldimethylammonium chloride-co-acrylamide) and a quaternary ammonium cellulose ether polymer, with an anionic polymer selected from the group consisting of a polysulfonic acid and alginic acid.

Inventors

  • 👤 Dean T. Su

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-03 20:00
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/02; A61K8/04; A61K8/042; A61K8/18; A61K8/30; A61K8/33; A61K8/39; A61K8/72; A61K8/73; A61K8/731; A61K8/733; A61K8/81; A61K8/8141; A61K8/8158; A61K8/817; A61Q; A61Q9/00; A61Q9/02; A61K2800/00; A61K2800/40; A61K2800/54; A61K2800/542; A61K2800/5424; A61K2800/5426

Claims Analysis

Total Claims: 15
Claim 1
Independent Claim 197 words
A stable shaving cream gel comprising 55% to 94% by weight of water; 4% to 30% by weight of a water soluble salt of a carboxylic acid having the formula: R.sub.1 (OC.sub.n H.sub.2n).sub.m R.sub.2 COOH wherein R 1 is an alkyl radical of C 6 -C 16 , n=2 to 4, m=0-20 and R 2 =OCH 2 to OC 3 H 6 or CH 2 to C 3 H 6 ; 1% to 20% by weight of at least one humectant selected from the group consisting of propylene glycol, glycerine and sorbitol; 0.5% to 10% by weight of at least one hydrocarbon propellant selected from the group consisting of n-pentane, isopentane, neopentane, n-butane and isobutane; and 0.05% to 5% by weight of a preformed, water soluble, interpolymer gel reaction product formed by the rapid and intensive agitation of a cationic polymer bearing a positive charge selected from the group consisting of poly(diallyldimethylammonium chloride-co-acrylamide) and a quaternary ammonium cellulose ether polymer and an anionic polymer bearing a negative charge selected from the group consisting of poly(2-acrylamido-2-methylpropane sulfonic acid) and alginic acid, said interpolymer gel being effective to improve the foam characteristics, slip and after-feel properties of said composition.
Claim 2
Dependent Claim 197 words
A stable shaving cream gel comprising 55% to 94% by weight of water; 4% to 30% by weight of a water soluble salt of a carboxylic acid having the formula: R.sub.1 (OC.sub.n H.sub.2n).sub.m R.sub.2 COOH wherein R 1 is an alkyl radical of C 6 -C 16 , n=2 to 4, m=0-20 and R 2 =OCH 2 to OC 3 H 6 or CH 2 to C 3 H 6 ; 1% to 20% by weight of at least one humectant selected from the group consisting of propylene glycol, glycerine and sorbitol; 0.5% to 10% by weight of at least one hydrocarbon propellant selected from the group consisting of n-pentane, isopentane, neopentane, n-butane and isobutane; and 0.05% to 5% by weight of a preformed, water soluble, interpolymer gel reaction product formed by the rapid and intensive agitation of a cationic polymer bearing a positive charge selected from the group consisting of poly(diallyldimethylammonium chloride-co-acrylamide) and a quaternary ammonium cellulose ether polymer and an anionic polymer bearing a negative charge selected from the group consisting of poly(2-acrylamido-2-methylpropane sulfonic acid) and alginic acid, said interpolymer gel being effective to improve the foam characteristics, slip and after-feel properties of said composition.
Claim 3
Dependent Claim 61 words
The shaving gel according to claim 1, which additionally includes about 0.1-5% by weight of at least one fatty acid ester having the formula: ##STR7## wherein R 1 is an alkyl radical or a polyhydric alkyl radical derived from glyceryl, polyglyceryl, sorbitol, polyethylene glycol or polypropylene glycol; R 2 is a C 8 -C 18 alkyl radical, and n=1 or 2.
Claim 4
Dependent Claim 45 words
A shaving gel according to claim 1, which additionally contains about 0.1-5% by weight of a fatty alcohol having the formula: R.sub.1 OH, wherein R 1 is an alkyl radical or a polyhydric alkyl radical derived from glyceryl, polyglyceryl, sorbitol, polyethylene glycol or polypropylene glycol.
Claim 5
Dependent Claim 40 words
The shaving gel according to claim 1, wherein the water soluble interpolymer gel is the reaction product of at least 7.5% by weight of poly(2-acrylamido-2-methylpropane sulfonic acid) in water with at least 4% by weight of poly(diallyldimethylammonium chloride-co-acrylamide in water.
Claim 6
Dependent Claim 44 words
The shaving gel of claim 1, wherein the water soluble interpolymer gel is the reaction product of at least 3.8% by weight of poly(2-acrylamido-2-methylpropane sulfonic acid) in water with at least 1.25% by weight of of a quaternary ammonium cellulose ether polymer in water.
Claim 7
Dependent Claim 37 words
The shaving gel according to clam 1, wherein the water soluble interpolymer gel is the reaction product of at least 1% by weight of alginic acid with at least 4% by weight of poly(diallyldimethylammonium chloride-co-acrylamide) in water.
Claim 8
Dependent Claim 37 words
The shaving gel according to clam 1, wherein the water soluble interpolymer gel is the reaction product of at least 1% by weight of alginic acid with at least 4% by weight of poly(diallyldimethylammonium chloride-co-acrylamide) in water.
Claim 9
Dependent Claim 31 words
The shaving gel according to claim 1, wherein the water soluble interpolymer gel is the reaction product of alginic acid with a quaternary ammonium cellulose ether polymer in an aqueous medium.
Claim 10
Dependent Claim 24 words
The shaving gel according to claim 1, wherein the hydrocarbon is a mixture of n-pentane of n-butane, isopentane and neopentane, or isopentane and isobutane.
Claim 11
Dependent Claim 23 words
The shaving gel according to claim 1, wherein the water soluble interpolymer gel constitutes about 0.1% to 1% by weight of the composition.
Claim 12
Dependent Claim 20 words
The shaving gel according to claim 1, which is free of the presence of electrolytes including inorganic salts and acids.
Claim 13
Dependent Claim 46 words
A shaving gel in accordance with claim 1 wherein said carboxylic acid salt is formed in situ by reacting about 3% to 20% by weight of said carboxylic acid with a base selected from the group consisting of monoethanolamine, diethanolamine, triethanolamine, sodium hydroxide and potassium hydroxide.
Claim 14
Dependent Claim 63 words
A shaving gel in accordance with claim 9 wherein said carboxylic acid salt is present in an amount of 8% to 18% by weight, said humectant is present in an amount of 1.5% to 10% by weight, said hydrocarbon is present in an amount of 1.5% to 4% by weight and water is present in an amount of 65% to 85% by weight.
Claim 15
Dependent Claim 57 words
A shaving gel in accordance with claim 12 wherein the water-soluble interpolymer gel is the reaction product of anionic poly(2 acrylamido-2-methylpropane sulfonic acid) polymer with cationic poly(diallyldimethylammonium chloride-co-acrylamide) polymer in an aqueous medium, the initial aqueous mixture containing at least 3.75% by weight of said anionic polymer and at least 2% by weight of said cationic polymer.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1988-07-08 1989-01-07 1989-07-09 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1992-07-08 1993-01-07 1993-07-09 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1996-07-08 1997-01-07 1997-07-09 $7700.00 Window Closed / Lapsed

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