US4196190A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acrylic hair setting resins having high resistance to moisture and rapid removability from the hair with shampoo
Assignee: Rohm and Haas Co
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Filing: 1978-01-09
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Granted: 1980-04-01
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Expires: 1998-01-09
Abstract
Abstract Acrylic polymer solutions having superior properties when used as hair setting or holding resins are disclosed. Specific polymers disclosed are derived from (1) alkyl acrylates with 2-8 carbon alkyl groups, (2) methyl methacrylate, (3) hydroxyethyl methacrylate, and (4) methacrylic acid in proportions yielding a film forming resin readily soluble in shampoo, with a Tg between about 40 DEG C. and 80 DEG C., a molecular weight between about 25,000 and 250,000 and not more than 50 ppm of unreacted alkyl acrylate monomer.
Inventors
- 👤 David R. Gehman
- 👤 William A. Kirn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:23
CPC Classifications
A; A61; A61Q; A61Q5/00; A61Q5/06; A61K; A61K8/00; A61K8/18; A61K8/72; A61K8/81; A61K8/8141; A61K8/8152; Y; Y10; Y10S; Y10S424/00; Y10S424/01; Y10S424/02; Y10S526/00; Y10S526/936
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
166 words
A hair setting composition for application to human hair to cosmetically set and hold the same for a reasonable period of time and which is readily removable therefrom by shampoo treatment which comprises (A) a film forming copolymer of (1) 10-30% by weight of an alkyl acrylate having a straight or branched chain alkyl group of 2 to less than 8 carbon atoms or mixture thereof, (2) 41-60% by weight of methyl methacrylate, (3) 5-20% by weight of hydroxyethyl methacrylate, and (4) 12-30% methacrylic acid, which copolymer has a calculated glass transition temperature, Tg, within the range of about 40°-80° C., a molecular weight within the range of about 25,000 to 250,000, and not more than about 50 ppm of unreacted alkyl acrylate monomer, and (B) a cosmetically acceptable organic solvent for said film forming copolymer, wherein (A) is dissolved in (B) in an amount of 1 to 15% by weight of the composition with the required amount of organic amine neutralizer to achieve acceptable performance.
Claim 2
Dependent Claim
166 words
A hair setting composition for application to human hair to cosmetically set and hold the same for a reasonable period of time and which is readily removable therefrom by shampoo treatment which comprises (A) a film forming copolymer of (1) 10-30% by weight of an alkyl acrylate having a straight or branched chain alkyl group of 2 to less than 8 carbon atoms or mixture thereof, (2) 41-60% by weight of methyl methacrylate, (3) 5-20% by weight of hydroxyethyl methacrylate, and (4) 12-30% methacrylic acid, which copolymer has a calculated glass transition temperature, Tg, within the range of about 40°-80° C., a molecular weight within the range of about 25,000 to 250,000, and not more than about 50 ppm of unreacted alkyl acrylate monomer, and (B) a cosmetically acceptable organic solvent for said film forming copolymer, wherein (A) is dissolved in (B) in an amount of 1 to 15% by weight of the composition with the required amount of organic amine neutralizer to achieve acceptable performance.
Claim 3
Dependent Claim
19 words
The composition of claim 1 wherein the alkyl acrylate component of the film forming copolymer (A) is n-butyl acrylate.
Claim 4
Dependent Claim
18 words
The composition of claim 1 wherein the molecular weight range of the copolymer is between 50,000 and 150,000.
Claim 5
Dependent Claim
17 words
The composition of claim 1 wherein the calculated Tg is within the range of about 45°-75° C.
Claim 6
Dependent Claim
35 words
The composition of claim 1 wherein the film forming copolymer contains the following components in approximately the indicated proportions by weight: ______________________________________
butyl acrylate 25%
methyl methacrylate 47%
hydroxyethyl methacrylate
10%
methacrylic acid 18%
______________________________________
Claim 7
Dependent Claim
23 words
The composition of claim 1 wherein the methacrylic acid component of the film forming copolymer comprises about 18% by weight of the copolymer.
Claim 8
Dependent Claim
23 words
The composition of claim 1 wherein the hydroxyethyl methacrylate component of the film forming copolymer comprises about 10% by weight of the copolymer.
Claim 9
Dependent Claim
17 words
The composition of claim 5 wherein the film forming copolymer has a molecular weight of about 70,000.
Claim 10
Dependent Claim
46 words
An aerosol hair spray composition comprising between 30 and 70 weight percent of components A and B of claim 1 and between 70 and 30 weight percent of a spraying agent selected from the group consisting of halogenated hydrocarbons, compressed gases, volatile hydrocarbons and mixtures thereof.
Claim 11
Dependent Claim
59 words
A water insoluble, shampoo soluble hair setting polymer which comprises (a) 10-30% by weight of an alkyl acrylate having a straight or branched chain alkyl group of 2 to less than 8 carbon atoms or mixtures thereof (b) 41-60% by weight of methyl methacrylate, (c) 5-20% by weight of hydroxyethyl methacrylate and (d) 12-30% by weight of methacrylic acid.
Claim 12
Dependent Claim
59 words
A water insoluble, shampoo soluble hair setting polymer which comprises (a) 10-30% by weight of an alkyl acrylate having a straight or branched chain alkyl group of 2 to less than 8 carbon atoms or mixtures thereof (b) 41-60% by weight of methyl methacrylate, (c) 5-20% by weight of hydroxyethyl methacrylate and (d) 12-30% by weight of methacrylic 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) | 1983-04-01 | 1983-10-01 | 1984-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-04-01 | 1987-10-01 | 1988-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-04-01 | 1991-10-01 | 1992-04-01 | $7700.00 | Window Closed / Lapsed |