US4842852A
Expired / Lapsed
US
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Hydrocarbon tolerant hair fixing compositions
Assignee: Akzo Nobel NV
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Filing: 1988-03-10
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Granted: 1989-06-27
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Expires: 2008-03-10
Abstract
Abstract This invention presents two series of novel hair fixing compositions, the first comprising copolymers of acrylates, N-substituted acrylamides and acrylic acid; and the second comprising copolymers of vinyl acetate or propionate, vinyl esters of α-branched carboxylic acids, and alkyl maleates. Such materials, when neutralized with NaOH, KOH, or mixtures of these bases with certain long amines, exhibit an enhanced tolerance of non-halogenated hydrocarbons and are particularly useful.
Inventors
- 👤 Frank A. Nowak, Jr.
- 👤 Albert L. Micchelli
- 👤 William M. Rouse 3
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:52
CPC Classifications
A; A61; A61Q; A61Q5/00; A61Q5/06; A61K; A61K8/00; A61K8/02; A61K8/04; A61K8/046; A61K8/18; A61K8/72; A61K8/81; A61K8/8141; A61K8/8158; A61K8/8164
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
99 words
An improved hair fixing composition having increased hydrocarbon tolerance, for use in aerosol formulations, comprising a terpolymer of 40-60% (by wt.) of a C 3 -C 11 alkyl methacrylate, 20-40% (by wt.) of a C 4 -C 10 N-substituted alkyl acrylamide, and 10-25% (by wt.) of acrylic acid or methacrylic acid, wherein all percentages total 100% and the improvement comprises neutralizing at least 70% of the carboxylic acid functionalities with an alkaline neutralizing agent comprising at least one base selected from the group consisting of NaOH or KOH, such that the tolerance of the copolymer to hydrocarbons is enhanced.
Claim 2
Dependent Claim
99 words
An improved hair fixing composition having increased hydrocarbon tolerance, for use in aerosol formulations, comprising a terpolymer of 40-60% (by wt.) of a C 3 -C 11 alkyl methacrylate, 20-40% (by wt.) of a C 4 -C 10 N-substituted alkyl acrylamide, and 10-25% (by wt.) of acrylic acid or methacrylic acid, wherein all percentages total 100% and the improvement comprises neutralizing at least 70% of the carboxylic acid functionalities with an alkaline neutralizing agent comprising at least one base selected from the group consisting of NaOH or KOH, such that the tolerance of the copolymer to hydrocarbons is enhanced.
Claim 3
Dependent Claim
16 words
The composition of claim 1, wherein at least 90% of the carboxylic acid functionalities are neutralized.
Claim 4
Dependent Claim
13 words
The composition of claim 1, wherein the neutralizing agent is NaOH or KOH.
Claim 5
Dependent Claim
21 words
The composition of claim 1, wherein the neutralizing agent is a mixture of NaOH or KOH and a long chain amine.
Claim 6
Dependent Claim
24 words
The composition of claim 1, wherein the terpolymer comprises 45-55% (by wt.) isobutylmethacrylate, 25-35% (by wt.) N-t-octyl acrylamide, and 10-25% (by wt.) acrylic acid.
Claim 7
Dependent Claim
23 words
The composition of claim 1, wherein the terpolymer comprises 51% (by wt.) isobutylmethacrylate, 30% (by wt.) N-t-octylacrylamide, and 19% (by wt.) acrylic acid.
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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) | 1992-06-26 | 1992-12-26 | 1993-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-06-26 | 1996-12-26 | 1997-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-06-26 | 2000-12-26 | 2001-06-27 | $7700.00 | Window Closed / Lapsed |