US4426376A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Neutralizer for permanent wave
Assignee: Helene Curtis Inc
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Filing: 1982-01-28
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Granted: 1984-01-17
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Expires: 2002-01-28
Abstract
Abstract A neutralizer for permanent waving of hair is disclosed. The neutralizer contains (A) 0.5-16% (w/v) of an oxidizing agent capable of reforming ruptured disulfide bonds in reduced hair and (B) 0.1-5% (w/v) of a cationic dextran derivative or its salt as indispensible components, and has a pH value range of from about 2 to about 10.5.
Inventors
- 👤 Sachiko Shirakura
- 👤 Hiroo Namiki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:12
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/72; A61K8/73; A61Q; A61Q5/00; A61Q5/04; A61K2800/00; A61K2800/40; A61K2800/54; A61K2800/542; A61K2800/5426
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
107 words
A neutralizer for permanent wave processing comprising 0.5-16% (w/v) of (A) and 0.1-5% (w/v) of B as indispensible components, where (A) denotes an oxidizing agent capable of reforming ruptured disulfide bonds in reduced hair and (B) denotes a cationic dextran derivative or its salt represented by formula (1) ##STR5## wherein R is selected from the group consisting of hydrogen and a quaternary nitrogen-containing group represented by formula (2) ##STR6## at least one R of formula (1) contains a quaternary nitrogen represented by formula (2), wherein R 1 , R 2 and R 3 , are lower-alkyl, and n is a positive number having a value between 1-8000.
Claim 2
Dependent Claim
107 words
A neutralizer for permanent wave processing comprising 0.5-16% (w/v) of (A) and 0.1-5% (w/v) of B as indispensible components, where (A) denotes an oxidizing agent capable of reforming ruptured disulfide bonds in reduced hair and (B) denotes a cationic dextran derivative or its salt represented by formula (1) ##STR5## wherein R is selected from the group consisting of hydrogen and a quaternary nitrogen-containing group represented by formula (2) ##STR6## at least one R of formula (1) contains a quaternary nitrogen represented by formula (2), wherein R 1 , R 2 and R 3 , are lower-alkyl, and n is a positive number having a value between 1-8000.
Claim 3
Dependent Claim
31 words
A neutralizer for permanent wave as set forth in claim 1, wherein the component (A) is selected from the group consisting of alkali metal bromates, hydrogen peroxide and alkali metal perborates.
Claim 4
Dependent Claim
27 words
A neutralizer for permanent wave as set forth in claim 1 wherein the component (A) is present in an amount from about 3.5 to about 16% (w/v).
Claim 5
Dependent Claim
20 words
A neutralizer for permanent wave as set forth in claim 1 wherein the pH is not higher than about 8.
Claim 6
Dependent Claim
38 words
A neutralizer for permanent wave as set forth in claim 1 wherein the component (A) is hydrogen peroxide present in an amount from about 1 to about 2% (w/v) and the pH is from about 3.5 to 4.0.
Claim 7
Dependent Claim
20 words
A neutralizer for permanent wave as set forth in claim 1 wherein the component (A) is an alkali metal bromate.
Claim 8
Dependent Claim
26 words
A neutralizer for permanent wave as set forth in claim 1 wherein the component (A) is an alkali metal perborate and the pH is about 10.
Claim 9
Dependent Claim
22 words
A neutralizer for permanent wave as set forth in claim 7 wherein the value of n is about 50 to about 200.
Claim 10
Dependent Claim
40 words
A method for neutralizing reduced hair that has been reduced with a mercaptan reducing agent applied to the hair for permanent waving which comprises applying to said reduced hair, after rinsing, an effective amount of the neutralizer of claim 1.
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) | 1987-01-16 | 1987-07-18 | 1988-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-01-16 | 1991-07-18 | 1992-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-01-16 | 1995-07-18 | 1996-01-17 | $7700.00 | Window Closed / Lapsed |