Patent DE51741C successfully refreshed from Google Patents.
US3583408A
Expired / Lapsed
US
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Simultaneously deforming and strengthening hair
Assignee: P&G Hair Care Holding Inc
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Filing: 1968-06-25
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Granted: 1971-06-08
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Expires: 1988-06-25
Abstract
Abstract Simultaneously deforms hair, e.g., waves or straightens hair and strengthens hair by treating hair with a reducing agent and a vinylic monomer containing acid groups; the vinylic monomer is polymerized during the process.
Inventors
- 👤 Robert A Wall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:21
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/46; A61K8/33; A61K8/36; A61Q; A61Q5/00; A61Q5/002; A61Q5/04; A61K2800/00; A61K2800/80; A61K2800/95
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
18 words
A process according to claim 1 including neutralizing the action of said reducing agent with an oxidizing agent.
Claim 2
Dependent Claim
26 words
A process according to claim 2 wherein said polymerization is effected by means of the redox couple formed by said reducing agent and said oxidizing agent.
Claim 3
Dependent Claim
97 words
A process for deforming hair comprising treating said hair with a first composition comprising a reducing agent and a water-soluble polymerizable vinylic monomer containing an acid group or salts thereof, allowing said composition to remain in contact with said hair for sufficient time to cause the softening of said hair; and then treating said hair with a second composition containing an oxidizing agent capable of rehardening said hair and a bridging agent whereby long-chain polymers of said vinylic monomers bridged by said bridging agents are formed in said hair; said vinylic monomer being a compound of formula:
Claim 4
Dependent Claim
21 words
A process according to claim 4 wherein said hair is wound on a mandrel during treatment whereby the hair is waved.
Claim 5
Dependent Claim
27 words
A process according to claim 4 wherein the hair treated is curly hair and the hair is combed periodically during treatment whereby the curly hair is straightened.
Claim 6
Dependent Claim
72 words
A process according to claim 4 wherein said reducing agent comprises about 1.5 percent to 10 percent by weight of said first composition; said vinylic monomer comprises about 2 percent to 20 percent by weight of said first composition; said oxidizing agent comprises about 2 percent to 15 percent by weight of said second composition and said bridging agent comprises about 0.1 percent to 5 percent by weight of said second composition.
Claim 7
Dependent Claim
41 words
A process according to claim 4 wherein said reducing agent is selected from the class consisting of sodium bisulfite and ammonium thioglycollate; said vinylic monomer is sodium acrylate; said oxidizing agent is ammonium persulfate and said bridging agent is calcium chloride.
Claim 8
Dependent Claim
53 words
A process for simultaneously deforming hair and polymerizing therein a vinylic monomer which comprises treating said hair with a reducing agent and a polymerizable vinylic monomer, and bridging the polymeric chain so formed with a bridging agent whereby the solubility of said polymer is reduced; said vinylic monomer being a compound of formula:
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) | 1974-06-07 | 1974-12-07 | 1975-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-07 | 1978-12-07 | 1979-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-07 | 1982-12-07 | 1983-06-08 | $7700.00 | Window Closed / Lapsed |