US3880174A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Permanent hair shaping composition and method for using the same
Assignee: Procter and Gamble Deutschland GmbH
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Filing: 1973-12-26
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Granted: 1975-04-29
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Expires: 1993-12-26
Abstract
Abstract A two step permanent hair shaping composition comprising a component A to be used in the first step comprising a salt of a mercapto carboxylic acid and a component B to be used in the second step comprising a salt of a mercapto carboxylic acid and a hydrophilic mercapto carboxylic acid ester wherein said ester is added just prior to use, and a method for using the same.
Inventors
- 👤 Theodor Wajaroff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:00
CPC Classifications
A; A61; A61Q; A61Q5/00; A61Q5/04; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/46; A61K8/64; A61K8/66
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
92 words
PROCESS FOR PERMANENTLY SHAPING HUMAN HAIR COMPRISING IN A FIRST STEP APPLYING TO THE HAIR A NEUTRAL OR ALKALINE SHAPING COMPOSITION CONTAINING A MERCAPTOCARBOXYLIC ACID SALT, PERMITTING SAID SHAPING COMPOSITION TO ACT ON THE HAIR, THEREAFTER IN A SECOND STEP APPLYING A FURTHER QUANTITY OF THE COMPOSITION USED IN STEP 1 TO WHICH THERE HAS NOW BEEN ADDED A HYDROPHILIC MERCAPTOCARBOXYLIC ACID ESTER, PERMITTING SAID COMPOSITION TO ACT ON THE HAIR, WASHING SAID COMPOSITIONS OFF FROM THE HAIR AND THEN APPLYING TO THE HAIR A SETTING COMPOSITION FOR PERMANENTLY SETTING THE HAIR.
Claim 2
Dependent Claim
92 words
PROCESS FOR PERMANENTLY SHAPING HUMAN HAIR COMPRISING IN A FIRST STEP APPLYING TO THE HAIR A NEUTRAL OR ALKALINE SHAPING COMPOSITION CONTAINING A MERCAPTOCARBOXYLIC ACID SALT, PERMITTING SAID SHAPING COMPOSITION TO ACT ON THE HAIR, THEREAFTER IN A SECOND STEP APPLYING A FURTHER QUANTITY OF THE COMPOSITION USED IN STEP 1 TO WHICH THERE HAS NOW BEEN ADDED A HYDROPHILIC MERCAPTOCARBOXYLIC ACID ESTER, PERMITTING SAID COMPOSITION TO ACT ON THE HAIR, WASHING SAID COMPOSITIONS OFF FROM THE HAIR AND THEN APPLYING TO THE HAIR A SETTING COMPOSITION FOR PERMANENTLY SETTING THE HAIR.
Claim 3
Dependent Claim
17 words
Process according to claim 1 wherein said shaping composition as used in said first step contains urease.
Claim 4
Dependent Claim
27 words
Process according to claim 1 wherein following said first step, the hair is rolled up on permanent wave rollers and thereafter the second step is carried out.
Claim 5
Dependent Claim
27 words
Process according to claim 1 wherein the hair shaping composition is permitted to act on said hair in the second step for about 5 to 20 minutes.
Claim 6
Dependent Claim
20 words
Process according to claim 1 wherein said mercaptocarboxylic acid salt is a water soluble salt of thioglycolic or thiolactic acid.
Claim 7
Dependent Claim
15 words
Process according to claim 5 wherein said salt is an ammonium, sodium or potassium salt.
Claim 8
Dependent Claim
18 words
Process according to claim 1 wherein said hydrophilic mercaptocarboxylic acid ester is a glycol, glycerine or methoxyethanol ester.
Claim 9
Dependent Claim
25 words
Process according to claim 1 wherein an ester splitting enzyme is present in said composition for accelerating the splitting of said hydrophilic mercaptocarboxylic acid ester.
Claim 10
Dependent Claim
10 words
Process according to claim 8 wherein said enzyme is pancreatin.
Claim 11
Dependent Claim
16 words
Process according to claim 1 wherein said shaping is for the purpose of straightening the hair.
Claim 12
Dependent Claim
16 words
Process according to claim 1 wherein said shaping is for the purpose of waving the hair.
Claim 13
Dependent Claim
37 words
Process according to claim 1 wherein the hair shaping composition is permitted to act on said hair in the first step for from 5 to 10 minutes and in said step for about 10 to 20 minutes.
Claim 14
Dependent Claim
25 words
Process according to claim 1 wherein said salt is present in said composition in an amount of 5 to 10 wt. percent calculated as acid.
Claim 15
Dependent Claim
24 words
Process according to claim 1 wherein said ester is present in said composition in an amount of about 5 to about 10 wt. percent.
Claim 16
Dependent Claim
18 words
Process according to claim 10 wherein said composition is applied in the form of a cream or gel.
Claim 17
Dependent Claim
19 words
Process according to claim 11 wherein said composition is applied in the form of a liquid solution or emulsion.
References Cited (Backward Citations)
US3109777A
Cited
US3157578A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-28 | 1978-10-28 | 1979-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-28 | 1982-10-28 | 1983-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-28 | 1986-10-28 | 1987-04-29 | $7700.00 | Window Closed / Lapsed |