US4304244A
Expired / Lapsed
US
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Hair straightening process and hair curling process and compositions therefor
Assignee: Carson Products Co
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Filing: 1977-06-09
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Granted: 1981-12-08
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Expires: 1997-06-09
Abstract
Abstract Compositions and methods for curling hair and for straightening hair are disclosed, wherein the compositions contain, as the principal active ingredient thereof, guanidine hydroxide. The guanidine hydroxide may be conveniently prepared by reacting calcium hydroxide and guanidine carbonate. Hair is curled by contacting the hair with the composition while the hair is on curlers, or otherwise maintained in a curled configuration. After the desired treatment time, the hair is rinsed and neutralized, with long lasting curls of the so-called "permanent wave" nature resulting. Hair may be straightened by contacting the hair with the composition and maintaining the hair in a generally straight configuration over at least a portion of the time that the hair is contacted by the composition. Thereafter the hair may be rinsed and neutralized.
Inventors
- 👤 Mario J. de la Guardia
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:14
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/40; A61K8/43; A61Q; A61Q5/00; A61Q5/04; A61Q5/06
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
58 words
A method of treating hair to cause the hair to maintain a desired configuration, said method comprising contacting the hair while in said desired configuration with an aqueous composition comprising, as the principal active ingredient, guanidine hydroxide, wherein said guanidine hydroxide is formed by reacting calcium hydroxide and guanidine carbonate, and thereafter removing said composition from the hair.
Claim 2
Independent Claim
58 words
A method of treating hair to cause the hair to maintain a desired configuration, said method comprising contacting the hair while in said desired configuration with an aqueous composition comprising, as the principal active ingredient, guanidine hydroxide, wherein said guanidine hydroxide is formed by reacting calcium hydroxide and guanidine carbonate, and thereafter removing said composition from the hair.
Claim 3
Independent Claim
107 words
A method of treating hair to cause the hair to maintain a desired configuration, said method comprising contacting the hair while in said desired configuration with an aqueous composition, said composition comprising the reaction product formed by reacting in an aqueous medium at least one water-soluble inorganic hydroxide selected from the group consisting of calcium hydroxide, barium hydroxide, strontium hydroxide and mixtures thereof, with at least one water-soluble guanidine salt selected from the group consisting of guanidine carbonate and guanidine sulfate, wherein the anion of said guanidine salt forms a substantially water-insoluble salt with the cation of said hydroxide, and thereafter removing said composition from the hair.
Claim 4
Independent Claim
107 words
A method of treating hair to cause the hair to maintain a desired configuration, said method comprising contacting the hair while in said desired configuration with an aqueous composition, said composition comprising the reaction product formed by reacting in an aqueous medium at least one water-soluble inorganic hydroxide selected from the group consisting of calcium hydroxide, barium hydroxide, strontium hydroxide and mixtures thereof, with at least one water-soluble guanidine salt selected from the group consisting of guanidine carbonate and guanidine sulfate, wherein the anion of said guanidine salt forms a substantially water-insoluble salt with the cation of said hydroxide, and thereafter removing said composition from the hair.
Claim 5
Dependent Claim
18 words
Method of claim 2, wherein said inorganic hydroxide is calcium hydroxide, and said guanidine salt is guanidine carbonate.
Claim 6
Dependent Claim
111 words
A two-component system for forming a reaction product for treating, when in the form of an aqueous solution, hair in a desired configuration to cause the hair to maintain the desired configuration, one of the components comprising at least one water-soluble inorganic hydroxide selected from the group consisting of calcium hydroxide, barium hydroxide, strontium hydroxide and mixtures thereof, the other of said components comprising at least one water-soluble guanidine salt selected from the group consisting of guanidine carbonate and guanidine sulfate, the anion of said salt forming a substantially water-insoluble salt with the cation of said hydroxide in an aqueous medium, and an emollient in at least one of said components.
Claim 7
Dependent Claim
111 words
A two-component system for forming a reaction product for treating, when in the form of an aqueous solution, hair in a desired configuration to cause the hair to maintain the desired configuration, one of the components comprising at least one water-soluble inorganic hydroxide selected from the group consisting of calcium hydroxide, barium hydroxide, strontium hydroxide and mixtures thereof, the other of said components comprising at least one water-soluble guanidine salt selected from the group consisting of guanidine carbonate and guanidine sulfate, the anion of said salt forming a substantially water-insoluble salt with the cation of said hydroxide in an aqueous medium, and an emollient in at least one of said components.
Claim 8
Dependent Claim
55 words
In a method of straightening hair comprising contacting the hair with an aqueous keratin-breaking composition, placing the hair in a straightened configuration, and thereafter fixing or neutralizing the composition on the hair, the improvement comprising using, as said composition, the aqueous reaction product formed by reacting in an aqueous medium calcium hydroxide and guanidine carbonate.
Claim 9
Dependent Claim
55 words
In a method of straightening hair comprising contacting the hair with an aqueous keratin-breaking composition, placing the hair in a straightened configuration, and thereafter fixing or neutralizing the composition on the hair, the improvement comprising using, as said composition, the aqueous reaction product formed by reacting in an aqueous medium calcium hydroxide and guanidine carbonate.
Claim 10
Dependent Claim
82 words
A composition for treating hair to cause the hair to assume a desired configuration, said composition comprising an aqueous solution of guanidine hydroxide having a pH of at least about 11.8 and a concentration of about 1% by weight to about 50% by weight of guanidine hydroxide, based on the total weight of said composition, said guanidine hydroxide being the principal active ingredient of said composition, and at least a stoichiometric amount of at least one water-soluble inorganic hydroxide, and an emollient.
Claim 11
Dependent Claim
82 words
A composition for treating hair to cause the hair to assume a desired configuration, said composition comprising an aqueous solution of guanidine hydroxide having a pH of at least about 11.8 and a concentration of about 1% by weight to about 50% by weight of guanidine hydroxide, based on the total weight of said composition, said guanidine hydroxide being the principal active ingredient of said composition, and at least a stoichiometric amount of at least one water-soluble inorganic hydroxide, and an emollient.
Claim 12
Dependent Claim
86 words
A composition for treating hair when applied thereto, comprising a water-soluble inorganic hydroxide ingredient and a water-soluble guanidine salt ingredient, said ingredients being selected such that reaction products thereof are guanidine hydroxide and a substantially water-insoluble inorganic salt formed by the cation of said inorganic hydroxide ingredient and the anion of said guanidine salt ingredient whereby the reaction producing said guanidine hydroxide will be driven towards completion, and said inorganic hydroxide ingredient being present in at least a stoichiometric amount relative to said guanidine salt ingredient.
Claim 13
Dependent Claim
86 words
A composition for treating hair when applied thereto, comprising a water-soluble inorganic hydroxide ingredient and a water-soluble guanidine salt ingredient, said ingredients being selected such that reaction products thereof are guanidine hydroxide and a substantially water-insoluble inorganic salt formed by the cation of said inorganic hydroxide ingredient and the anion of said guanidine salt ingredient whereby the reaction producing said guanidine hydroxide will be driven towards completion, and said inorganic hydroxide ingredient being present in at least a stoichiometric amount relative to said guanidine salt ingredient.
Claim 14
Dependent Claim
18 words
A composition as claimed in claim 7 wherein said inorganic hydroxide ingredient is an alkaline earth metal hydroxide.
Claim 15
Dependent Claim
15 words
A composition as claimed in claim 7 wherein said guanidine salt ingredient is guanidine carbonate.
Claim 16
Dependent Claim
15 words
A composition as claimed in claim 7 wherein said guanidine salt ingredient is guanidine sulfate.
Claim 17
Dependent Claim
16 words
A composition as claimed in claim 8 wherein said alkaline earth metal hydroxide is calcium hydroxide.
Claim 18
Dependent Claim
16 words
A composition as claimed in claim 8 wherein said alkaline earth metal hydroxide is barium hydroxide.
Claim 19
Dependent Claim
16 words
A composition as claimed in claim 8 wherein said alkaline earth metal hydroxide is strontium hydroxide.
Claim 20
Independent Claim
128 words
A method of treating hair, comprising the steps of: (a) providing a first quantity of a first ingredient comprising a water-soluble guanidine salt; (b) providing a second quantity of a second ingredient comprising a water-soluble inorganic hydroxide in at least a stoichiometric amount relative to said guanidine salt; (c) mixing said first and second ingredients to form a mixture so that said guanidine salt reacts with said inorganic hydroxide causing the formation of guanidine hydroxide and a water-insoluble inorganic salt formed by the cation of said inorganic hydroxide and the anion of said guanidine salt whereby the reaction producing said guanidine hydroxide will be driven towards completion; (d) applying said mixture of the hair for a selected period of time; and (e) removing said mixture from the hair.
Claim 21
Independent Claim
128 words
A method of treating hair, comprising the steps of: (a) providing a first quantity of a first ingredient comprising a water-soluble guanidine salt; (b) providing a second quantity of a second ingredient comprising a water-soluble inorganic hydroxide in at least a stoichiometric amount relative to said guanidine salt; (c) mixing said first and second ingredients to form a mixture so that said guanidine salt reacts with said inorganic hydroxide causing the formation of guanidine hydroxide and a water-insoluble inorganic salt formed by the cation of said inorganic hydroxide and the anion of said guanidine salt whereby the reaction producing said guanidine hydroxide will be driven towards completion; (d) applying said mixture of the hair for a selected period of time; and (e) removing said mixture from the hair.
Claim 22
Dependent Claim
14 words
A method as claimed in claim 14 wherein said guanidine salt is guanidine carbonate.
Claim 23
Dependent Claim
14 words
A method as claimed in claim 14 wherein said guanidine salt is guanidine sulfate.
Claim 24
Dependent Claim
14 words
A method as claimed in claim 14 wherein said inorganic hydroxide is calcium hydroxide.
Claim 25
Dependent Claim
14 words
A method as claimed in claim 14 wherein said inorganic hydroxide is barium hydroxide.
Claim 26
Dependent Claim
14 words
A method as claimed in claim 14 wherein said inorganic hydroxide is strontium hydroxide.
Claim 27
Dependent Claim
101 words
A manufacture for use in treating hair comprising a first ingredient and a second ingredient which are disposed in separate containers and which are combined to produce guanidine hydroxide that is applied to the hair, said first ingredient comprising a water-soluble inorganic hydroxide and said second ingredient comprising a water-soluble guanidine salt, the reaction products of said first and second ingredients being guanidine hydroxide and a substantially water-soluble inorganic salt formed by the cation of said first ingredient and the anion of said second ingredient, said inorganic hydroxide being present in at least a stoichiometric amount relative to said guanidine salt.
Claim 28
Dependent Claim
101 words
A manufacture for use in treating hair comprising a first ingredient and a second ingredient which are disposed in separate containers and which are combined to produce guanidine hydroxide that is applied to the hair, said first ingredient comprising a water-soluble inorganic hydroxide and said second ingredient comprising a water-soluble guanidine salt, the reaction products of said first and second ingredients being guanidine hydroxide and a substantially water-soluble inorganic salt formed by the cation of said first ingredient and the anion of said second ingredient, said inorganic hydroxide being present in at least a stoichiometric amount relative to said guanidine salt.
Claim 29
Dependent Claim
17 words
A manufacture as claimed in claim 20 wherein said inorganic hydroxide is an alkaline earth metal hydroxide.
Claim 30
Dependent Claim
25 words
A manufacture as claimed in claim 20 wherein said inorganic hydroxide is selected from the group consisting of calcium hydroxide, barium hydroxide and strontium hydroxide.
Claim 31
Dependent Claim
23 words
A manufacture as claimed in claim 20 wherein said guanidine salt is selected from the group consisting of guanidine carbonate and guanidine sulfate.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-12-07 | 1985-06-08 | 1985-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-12-07 | 1989-06-08 | 1989-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-12-07 | 1993-06-08 | 1993-12-08 | $7700.00 | Window Closed / Lapsed |