US4867971A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low pH shampoo containing climbazole
Assignee: Colgate Palmolive Co
•
Filing: 1988-04-22
•
Granted: 1989-09-19
•
Expires: 2008-04-22
Abstract
Abstract A stable homogeneous liquid antidandruff shampoo comprising about 0.10 to 2.0% by weight of 1-imidazolyl-1-(4-chlorophenoxy)-3,3-dimethylbutan-2-one (Climbazole) solubilized in an aqueous vehicle containing an acidic surfactant system of about pH 4 to pH 5.5 and further comprising a major amount of an anionic surfactant and minor amounts of either a nonionic, cationic, or amphoteric surfactant or a mixture thereof.
Inventors
- 👤 Joyce Ryan
- 👤 Malcolm Stansfield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:01
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/49; A61K8/494; A61K8/4946; A61Q; A61Q5/00; A61Q5/006; A61Q5/02
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
69 words
A homogenous liquid antidandruff shampoo composition comprising about 0.1-2.0% by weight of 1-imidazolyl-1-(4-chlorophenoxy)-3,3-dimethylbutan-2-one (Climbazole) solubilized in an aqueous vehicle containing a low pH surfactant system which is adjusted with an agent to about pH 4 to 5, said surfactant system comprising an anionic surfactant as the primary surfactant and minor amounts of a supplemental surfactant selected from the group consisting of nonionic, amphoteric, and cationic surfactants and mixtures thereof.
Claim 2
Dependent Claim
69 words
A homogenous liquid antidandruff shampoo composition comprising about 0.1-2.0% by weight of 1-imidazolyl-1-(4-chlorophenoxy)-3,3-dimethylbutan-2-one (Climbazole) solubilized in an aqueous vehicle containing a low pH surfactant system which is adjusted with an agent to about pH 4 to 5, said surfactant system comprising an anionic surfactant as the primary surfactant and minor amounts of a supplemental surfactant selected from the group consisting of nonionic, amphoteric, and cationic surfactants and mixtures thereof.
Claim 3
Dependent Claim
15 words
The composition according to claim 1, wherein the aqueous vehicle constitutes about 70-95% by weight.
Claim 4
Dependent Claim
28 words
The composition according to claim 2, wherein the anionic surfactant constitutes about 6-25% by weight and the supplemental surfactant or mixture of surfactants constitutes about 1-7% by weight.
Claim 5
Dependent Claim
26 words
The composition according to claim 3, wherein the surfactant system comprises a combination of anionic and nonionic surfactants in a weight ratio of 14/3, anionic/nonionic surfactant.
Claim 6
Dependent Claim
26 words
The composition according to claim 3, wherein the surfactant system comprises a combination of anionic and amphoteric surfactants in a weight ratio of 8/2, anionic/amphoteric surfactant.
Claim 7
Dependent Claim
27 words
The composition according to claim 3, wherein the surfactant system comprises a combination of anionic, amphoteric and cationic surfactants in a weight ratio of 8/2/0.2, anionic/amphoteric/cationic surfactant.
Claim 8
Dependent Claim
28 words
The composition according to claim 3, wherein the surfactant system comprises a combination of anionic, nonionic, amphoteric and cationic surfactants in a weight ratio of 8/1/1/0.1, anionic/nonionic/amphoteric/cationic surfactant.
Claim 9
Dependent Claim
10 words
The composition according to claim 5, additionally containing triethanolamine myristate.
Claim 10
Dependent Claim
26 words
The composition according to claim 3, wherein the anionic surfactant is a water soluble sulfate or sulfonate salt having an alkyl radical of 10-18 carbon atoms.
Claim 11
Dependent Claim
54 words
The composition according to claim 9, wherein the anionic surfactant is represented by the formula: R.sub.1 --O(CH.sub.2 CH.sub.2 O).sub.n SO.sub.3 M, wherein R 1 is an alkyl radical having 10-18 carbon atoms, n is an integer having a value of 0-5, and M is an alkali metal, ammonium, alkylol ammonium or an organic amine.
Claim 12
Dependent Claim
21 words
The composition according to claim 10, wherein the anionic surfactant is sodium lauryl ethenoxy ether sulfate containing 2-ethoxy radicals per molecule.
Claim 13
Dependent Claim
35 words
The composition according to claim 4, wherein the nonionic supplemental surfactant is a mono- or di-ethanolamide of a higher fatty acid having 8 to 18 carbon atoms, in an amount of about 1-5% by weight.
Claim 14
Dependent Claim
12 words
The composition according to claim 12, wherein the nonionic surfactant is cocodiethanolamide.
Claim 15
Dependent Claim
32 words
The composition according to claim 5 wherein the amphoteric surfactant is selected from the group consisting of betaines, sulfobetaines, amidobetaines, amidosulfobetaines and mixtures thereof, in an amount of about 1-5% by weight.
Claim 16
Dependent Claim
13 words
The composition according to claim 14, wherein the amphoteric surfactant is cocoamidopropyl betaine.
Claim 17
Dependent Claim
33 words
The composition according to claim 3, wherein the cationic surfactant is a polymeric quaternary ammonium salt consisting of acrylamide and dimethyl diallyl ammonium chloride monomers, in an amount of about 0.05-0.5% by weight.
Claim 18
Dependent Claim
14 words
The composition according to claim 4, containing 1% Climbazole and having a pH 4.
Claim 19
Dependent Claim
14 words
The composition according to claim 4 containing 2% Climbazole and having a pH 4.
Claim 20
Dependent Claim
23 words
A method of removing dandruff from the scalp and hair comprising shampooing with the liquid composition of claim 1 at least twice weekly.
Claim 21
Dependent Claim
17 words
A composition according to claim 1, wherein the agent for adjusting the pH is a strong base.
Claim 22
Dependent Claim
17 words
A composition according to claim 1, wherein the agent for adjusting the pH is a strong acid.
References Cited (Backward Citations)
US3658985A
Cited
US3812142A
Cited
US3903287A
Cited
GB1502144A
Cited
US4321156A
Cited
US4329336A
Cited
US4329335A
Cited
US4329334A
Cited
US4457938A
Cited
US4581351A
Cited
US4636329A
Cited
EP0160269A2
Cited
GB2161172A
Cited
EP0202621A2
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-09-18 | 1993-03-20 | 1993-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-09-18 | 1997-03-20 | 1997-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-09-18 | 2001-03-20 | 2001-09-19 | $7700.00 | Window Closed / Lapsed |