Patent US3922341A successfully refreshed from Google Patents.
US3922341A
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Aerosol hair sprays containing ethyl or butyl monoester of copolymer of vinyl monomer and maleic acid
Assignee: L'Oréal SA
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Filing: 1974-03-28
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Granted: 1975-11-25
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Expires: 1994-03-28
Abstract
Abstract A hair spray composition for use in aerosol form comprising a mixture a. at least one copolymer containing a repeating unit of the formula WHERE R is ethyl or butyl, and R1 is H or an aliphatic radical containing from 1 to 4 carbon atoms, wherein about 20-35% of the carboxylic groups are neutralized with an organic base; B. AN ALCOHOLIC PHASE COMPRISING ABOUT 20-45% BY WEIGHT OF THE TOTAL WEIGHT OF THE COMPOSITION; C. TRICHLOROFLUOROMETHANE; AND D. A SUFFICIENT QUANTITY OF NITROUS OXIDE TO PROVIDE AN INTERNAL PRESSURE OF BETWEEN 3 AND 8 KG/CM2 WHEN THE COMPOSITION IS PLACED IN A SEALED CONTAINER.
Inventors
- 👤 Jean-Louis Abegg
- 👤 Annie Madrange
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:32
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/02; A61K8/04; A61K8/046; A61K8/18; A61K8/72; A61K8/81; A61K8/8164; A61Q; A61Q5/00; A61Q5/06; Y; Y10; Y10S; Y10S424/00; Y10S424/01; Y10S424/02
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
27 words
A LACQUER COMPOSITION FOR USE AS A HAIR SPRAY COMPRISING A MIXTURE OF A. 0.5-4 WEIGHT PERCENT OF A COPOLYMER CONTAINING A REPEATING UNIT OF THE FORMULA:
Claim 2
Dependent Claim
27 words
A LACQUER COMPOSITION FOR USE AS A HAIR SPRAY COMPRISING A MIXTURE OF A. 0.5-4 WEIGHT PERCENT OF A COPOLYMER CONTAINING A REPEATING UNIT OF THE FORMULA:
Claim 3
Dependent Claim
28 words
The composition of claim 1, wherein 23-28% of the free carboxylic acid functions of the copolymer are neutralized and the internal pressure is between 3 and 4 kg/cm2.
Claim 4
Dependent Claim
16 words
The composition of claim 1, wherein the copolymer is the ethyL monoester of methylvinylether-maleic acid copolymer.
Claim 5
Dependent Claim
16 words
The composition of claim 1 wherein the copolymer is the butyl monoester of methylvinylether-maleic acid copolymer.
Claim 6
Dependent Claim
27 words
The composition of claim 1, wherein the copolymer is present in an amount of about 1-2% by weight with respect to the total weight of the composition.
Claim 7
Dependent Claim
23 words
The composition of claim 1, wherein the organic base used to neutralize the free carboxylic acid functions of the copolymer is an aminoalcohol.
Claim 8
Dependent Claim
19 words
The composition of claim 6, wherein the aminoalcohol is selected from the group consisting of aminomethylpropanol, aminomethylpropanediol, and tri-isopropanolamine.
Claim 9
Dependent Claim
18 words
The composition of claim 1, wherein the alcoholic phase is ethyl or isopropyl alcohol or a mixture thereof.
Claim 10
Dependent Claim
25 words
The composition of claim 1 which also includes dichlorodifluoromethane not in excess of 15 percent by weight based on the weight of the total composition.
Claim 11
Dependent Claim
26 words
The composition of claim 1, wherein the quantity of trichlorofluoromethane is between about 50 and 75% by weight based on the total weight of the composition.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-24 | 1979-05-26 | 1979-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-24 | 1983-05-26 | 1983-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-24 | 1987-05-26 | 1987-11-25 | $7700.00 | Window Closed / Lapsed |