US3981312A
Expired / Lapsed
US
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Hair waving method with a prebonder
Assignee: Redken Laboratories Inc
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Filing: 1975-07-03
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Granted: 1976-09-21
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Expires: 1995-07-03
Abstract
Abstract A process for cold waving hair includes the step of prebonding the hair by contacting it with both a water soluble polyvalent metal salt and a water soluble reactive polyamide-epichlorohydrin resin.
Inventors
- 👤 Kanu I. Patel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:34
CPC Classifications
A; A61; A61Q; A61Q5/00; A61Q5/04; A45; A45D; A45D7/00; A61K; A61K8/00; A61K8/18; A61K8/72; A61K8/84; A61K8/88
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
77 words
In a process for waving hair which includes the steps of contacting the hair with a reducing agent to reduce the hair followed by contacting the hair with an oxidizing agent to reconstitute the hair, the improvement comprising the step of prebonding the hair prior to contact with the oxidizing agent by contact with at least one polyvalent metal salt in an aqueous solution and at least one water soluble reactive polyamide-epichlorohydrin resin in an aqueous solution.
Claim 2
Dependent Claim
77 words
In a process for waving hair which includes the steps of contacting the hair with a reducing agent to reduce the hair followed by contacting the hair with an oxidizing agent to reconstitute the hair, the improvement comprising the step of prebonding the hair prior to contact with the oxidizing agent by contact with at least one polyvalent metal salt in an aqueous solution and at least one water soluble reactive polyamide-epichlorohydrin resin in an aqueous solution.
Claim 3
Dependent Claim
36 words
A process as claimed in claim 1 wherein the step of prebonding comprises contacting the hair with an aqueous solution containing at least one polyvalent metal salt and at least one reactive water soluble polyamide-epichlorohydrin resin.
Claim 4
Dependent Claim
47 words
A process as claimed in claim 1 wherein the step of prebonding the hair comprises contacting the hair, after reduction, with separate applications of an aqueous solution of at least one polyvalent metal salt and an aqueous solution of at least one water soluble, reactive polyamide-epichlorohydrin resin.
Claim 5
Dependent Claim
47 words
A process as claimed in claim 1 wherein the step of prebonding comprises contacting the hair with an aqueous solution containing the water soluble, reactive polyamide-epichlorohydrin resin in an amount of from about 1.0 to about 4.0% by weight based on the total weight of the solution.
Claim 6
Dependent Claim
43 words
A process as claimed in claim 4 wherein the step of prebonding comprises contacting the hair with an aqueous solution containing the polyvalent metal salt in an amount of from about 20% based on the total weight of the solution to solution saturation.
Claim 7
Dependent Claim
43 words
A process as claimed in claim 1 wherein the step of prebonding comprises contacting the hair with an aqueous solution containing the polyvalent metal salt in an amount of from about 20% based on the total weight of the solution to solution saturation.
Claim 8
Dependent Claim
15 words
A process as claimed in claim 1 wherein the polyvalent metal salt is magnesium sulfate.
Claim 9
Dependent Claim
33 words
A process as claimed in claim 1 wherein the water soluble, reactive polyamide-epichlorohydrin resin is the resin formed by the reaction of epichlorohydrin with the reaction product of diethylene triamine and adipic acid.
Claim 10
Dependent Claim
32 words
A prebonding composition for improving the body of hair in a waving process which comprises an aqueous solution of at least one polyvalent metal salt and a reactive, water soluble polyamide-epichlorohydrin resin.
Claim 11
Dependent Claim
32 words
A prebonding composition for improving the body of hair in a waving process which comprises an aqueous solution of at least one polyvalent metal salt and a reactive, water soluble polyamide-epichlorohydrin resin.
Claim 12
Dependent Claim
34 words
A composition of claim 9 in which the water soluble, reactive polyamide-epichlorohydrin resin is present in an amount from about 1.0 to about 4.0% by weight based on the total weight of the solution.
Claim 13
Dependent Claim
30 words
A composition of claim 10 in which the polyvalent metal salt is present in an amount from about 20% based on the total weight of the solution to solution saturation.
Claim 14
Dependent Claim
30 words
A composition of claim 9 in which the polyvalent metal salt is present in an amount from about 20% based on the total weight of the solution to solution saturation.
Claim 15
Dependent Claim
16 words
The prebonding composition as claimed in claim 9 wherein the polyvalent metal salt is magnesium sulfate.
Claim 16
Dependent Claim
34 words
The prebonding composition as claimed in claim 9 wherein the water soluble, reactive polyamide-epichlorohydrin resin is the resin formed by the reaction of epichlorohydrin with the reaction product of diethylene triamine and adipic acid.
Claim 17
Dependent Claim
44 words
A kit for waving of hair comprising: a. a packaged reducing solution for the hair; b. a packaged aqueous prebonding solution of at least one polyvalent metal salt and a reactive water soluble polyamide-epichlorohydrin resin; and c. a packaged oxidizing solution for the hair.
Claim 18
Dependent Claim
44 words
A kit for waving of hair comprising: a. a packaged reducing solution for the hair; b. a packaged aqueous prebonding solution of at least one polyvalent metal salt and a reactive water soluble polyamide-epichlorohydrin resin; and c. a packaged oxidizing solution for the hair.
Claim 19
Dependent Claim
37 words
A kit as claimed in claim 15 wherein the prebonding solution contains the water soluble, reactive polyamide-epichlorohydrin resin in an amount from about 1.0 to about 4.0% by weight based on the total weight of the solution.
Claim 20
Dependent Claim
31 words
A kit as claimed in claim 16 wherein the polyvalent metal salt is present in an amount from about 20% based on the total weight of the solution to solution saturation.
Claim 21
Dependent Claim
33 words
A kit as claimed in claim 15 wherein the prebonding solution contains the polyvalent metal salt in an amount from about 20% based on the total weight of the solution to solution saturation.
Claim 22
Dependent Claim
15 words
A kit as claimed in claim 15 wherein the polyvalent metal salt is magnesium sulfate.
Claim 23
Dependent Claim
33 words
A kit as claimed in claim 15 wherein the water soluble, reactive polyamide-epichlorohydrin resin is the resin formed by the reaction of epichlorohydrin with the reaction product of diethylene triamine and adipic acid.
Claim 24
Independent Claim
185 words
A method for waving hair comprising the steps of: a. reducing the hair by contacting the hair with an aqueous reducing solution comprising: i. a first stage comprising a urea compound selected from the group consisting of urea, methyl urea, ethyl urea and mixtures thereof; and ii. a second stage comprising water, a water soluble thiol and a water soluble protein, where the first stage is added to the second stage alone or with water forming a net solution having a pH between about 6.0 and about 6.8, the net solution having a urea compound concentration of from about 1 to about 4 molar, a water soluble thiol concentration of from about 0.8 to about 1.4 molar and a water soluble protein content of from about 2 to about 5 percent by weight based on the total weight of the net solution; b. prebonding the hair by contact with at least one polyvalent metal salt in an aqueous solution and at least one water soluble, reactive polyamide-epichlorohydrin resin in an aqueous solution; and c. oxidizing the hair by contacting the hair with an oxidizing solution.
Claim 25
Independent Claim
185 words
A method for waving hair comprising the steps of: a. reducing the hair by contacting the hair with an aqueous reducing solution comprising: i. a first stage comprising a urea compound selected from the group consisting of urea, methyl urea, ethyl urea and mixtures thereof; and ii. a second stage comprising water, a water soluble thiol and a water soluble protein, where the first stage is added to the second stage alone or with water forming a net solution having a pH between about 6.0 and about 6.8, the net solution having a urea compound concentration of from about 1 to about 4 molar, a water soluble thiol concentration of from about 0.8 to about 1.4 molar and a water soluble protein content of from about 2 to about 5 percent by weight based on the total weight of the net solution; b. prebonding the hair by contact with at least one polyvalent metal salt in an aqueous solution and at least one water soluble, reactive polyamide-epichlorohydrin resin in an aqueous solution; and c. oxidizing the hair by contacting the hair with an oxidizing solution.
Claim 26
Dependent Claim
47 words
A method as claimed in claim 21 wherein the step of prebonding comprises contacting the hair with an aqueous solution containing the water soluble, reactive polyamide-epichlorohydrin resin in an amount of from about 1.0 to about 4.0% by weight based on the total weight of the solution.
Claim 27
Dependent Claim
43 words
A method as claimed in claim 22 wherein the step of prebonding comprises contacting the hair with an aqueous solution containing the polyvalent metal salt in an amount of from about 20% based on the total weight of the solution to solution saturation.
Claim 28
Dependent Claim
43 words
A method as claimed in claim 21 wherein the step of prebonding comprises contacting the hair with an aqueous solution containing the polyvalent metal salt in an amount of from about 20% based on the total weight of the solution to solution saturation.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-09-21 | 1980-03-22 | 1980-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-09-21 | 1984-03-22 | 1984-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-09-21 | 1988-03-22 | 1988-09-21 | $7700.00 | Window Closed / Lapsed |