Patent US4296764A successfully refreshed from Google Patents.
US4296764A
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Hair waving and straightening method
Assignee: Chesebrough Ponds Inc
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Filing: 1979-12-26
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Granted: 1981-10-27
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Expires: 1999-12-26
Abstract
Abstract A process for the waving or straightening of hair by treating with an alkaline bisulphite and or sulfite preparation followed by neutralizing with hydrogen peroxide is improved by using an aqueous neutralizing solution in which the hydrogen peroxide is present in a concentration of from 0.65 to 3.4% by weight and proportional to the concentration by weight of available sulfur dioxide in the waving/straightening solution used prior to neutralization. The process avoids certain disadvantages associated with the prior art.
Inventors
- 👤 Thomas J. Pallone
- 👤 Mark Lynch
- 👤 Janice E. Corvino
- 👤 John P. McCook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:10
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/19; A61K8/23; A61K8/22; A61Q; A61Q5/00; A61Q5/04
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
116 words
In a process for the cold waving or straightening of hair, the improvement which serves to provide longer-lasting results with less tendency to undergo hair lightening and increased tightness and springiness when used as a waving solution, comprising contacting the hair with an alkaline cold waving or straightening solution containing acidic metal sulfite and/or acidic metal bisulfite, capable of generating sulfur dioxide, followed by treating with an aqueous neutralizer solution having a pH between 2.0 and 5.0 and containing hydrogen peroxide in a concentration between 0.65 and 3.4 percent by weight giving a ratio of weight percent hydrogen peroxide in the neutralizer to weight percent sulfur dioxide from the waving/straightening solution of between 0.26 and 0.34.
Claim 2
Dependent Claim
116 words
In a process for the cold waving or straightening of hair, the improvement which serves to provide longer-lasting results with less tendency to undergo hair lightening and increased tightness and springiness when used as a waving solution, comprising contacting the hair with an alkaline cold waving or straightening solution containing acidic metal sulfite and/or acidic metal bisulfite, capable of generating sulfur dioxide, followed by treating with an aqueous neutralizer solution having a pH between 2.0 and 5.0 and containing hydrogen peroxide in a concentration between 0.65 and 3.4 percent by weight giving a ratio of weight percent hydrogen peroxide in the neutralizer to weight percent sulfur dioxide from the waving/straightening solution of between 0.26 and 0.34.
Claim 3
Dependent Claim
29 words
The process of claim 1, in which the cold waving or straightening solution contains acidic metal bisulphite, and/or sulfite, alkali metal borate, an alkali metal carbonate, alkanolamine and water.
Claim 4
Dependent Claim
60 words
The process of claim 2, in which the hair waving and straightening solution has the following composition: ______________________________________
available sulfur dioxide
1.9 to 13.0% by weight
(in the form of acidic
metal bisulphite)
alkali metal borate
0.6 to 8.2% by weight
alkali metal carbonate
0.6 to 8.2% by weight
alkanolamine 1.7 to 9.8% by weight
water q.s. to 100%
______________________________________
Claim 5
Dependent Claim
48 words
The process of claim 2, in which the hair waving and straightening solution has the following composition: ______________________________________
sodium bisulphite 9.69% by weight
sodium borate 3.22% by weight
sodium carbonate 2.16% by weight
monoethanolamine 5.90% by weight
diethanolamine 1.57% by weight
water q.s. to 100% by weight
______________________________________
Claim 6
Dependent Claim
20 words
The process of claims 2 or 4, in which the hair waving and straightening solution also contains a wetting agent.
Claim 7
Dependent Claim
44 words
The process of claims 2 or 4, in which the hydrogen peroxide solution has a peroxide concentration of 1.9 percent by weight and a pH of 3.50 when used as a neutralizer for a waving/straightening solution with 6.5% by weight of available sulfur dioxide.
Claim 8
Dependent Claim
44 words
The process of claims 2 or 4, in which the hydrogen peroxide solution has a peroxide concentration of 1.7 percent by weight and a pH of 3.50 when used as a neutralizer for a waving/straightening solution with 6.5% by weight of available sulfur dioxide.
Claim 9
Dependent Claim
48 words
The process of claim 2, in which the hair waving and straightening solution has the following composition: ______________________________________
sodium bisulphite 6.46% by weight
sodium borate 2.15% by weight
sodium carbonate 1.44% by weight
monoethanolamine 5.90% by weight
diethanolamine 1.57% by weight
water q.s. to 100% by weight
______________________________________
Claim 10
Dependent Claim
20 words
The process of claims 2 or 8, in which the hair waving and straightening solution also contains a wetting agent.
Claim 11
Dependent Claim
44 words
The process of claims 2 or 8, in which the hydrogen peroxide solution has a peroxide concentration of 1.3 percent by weight and a pH of 3.50 when used as a neutralizer for a waving/straightening solution with 4.3% by weight of available sulfur dioxide.
Claim 12
Dependent Claim
44 words
The process of claims 2 or 8, in which the hydrogen peroxide solution has a peroxide concentration of 1.1 percent by weight and a pH of 3.50 when used as a neutralizer for a waving/straightening solution with 4.3% by weight of available sulfur dioxide.
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) | 1984-10-26 | 1985-04-27 | 1985-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-10-26 | 1989-04-27 | 1989-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-10-26 | 1993-04-27 | 1993-10-27 | $7700.00 | Window Closed / Lapsed |