US4590249A
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Cationic ampholytic tetrapolymers and cosmetic compositions containing them
Assignee: Clariant Finance BVI Ltd
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Filing: 1984-10-10
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Granted: 1986-05-20
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Expires: 2004-10-10
Abstract
Abstract The invention relates to new cationic ampholytic water-soluble tetrapolymers for cosmetic compositions for treating keratinous fibers and resulting from copolymerization of: a moles of acrylamide, AAM, b moles of 2-acrylamido-2-methyl-propane sulfonic acid, AMPS, b moles of a basic monomer selected from the three following monomers: dimethylaminoethyl acrylate, ADAME, N-(3-dimethylamino-1-propyl) acrylamide, DMAPA, N-(3-dimethylamino-1-propyl) methacrylamide, DMAPMA, c moles of a cationic monomer selected from the four following monomers: N,N,N-3-trimethylacrylamido-propanaminium chloride, APTAC, N,N,N-3-trimethylmethacrylamido-propanaminium chloride, MAPTAC, N,N,N-2-trimethylacryloyloxy-ethanaminium chloride, CMA, dimethylaminoethyl acrylate hydrochloride, CHA, with the following relations: a+2b+c=100 30<a<75 10<b<25 5<c<20.
Inventors
- 👤 Jean Cabestany
- 👤 Daniel Siegel
- 👤 Roland Righetti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:43
CPC Classifications
C; C08; C08F; C08F220/00; C08F220/02; C08F220/52; C08F220/54; C08F220/56; A; A61; A61K; A61K8/00; A61K8/18; A61K8/72; A61K8/81; A61K8/8141; A61K8/8158; A61Q; A61Q5/00; A61Q5/12; A61K2800/00; A61K2800/40; A61K2800/54; A61K2800/542; A61K2800/5428
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
103 words
A cationic ampholytic water-soluble tetrapolymer for cosmetic compositions for treating keratinous fibers, the tetrapolymer having the following general formula: ##STR2## in which A represents an oxygen atom or an NH group, R represents a hydrogen atom or a methyl group when A represents an NH group, and only a hydrogen atom when A represents an oxygen atom, n is equal to 2 when A represents an oxygen and and n is equal to 3 when A represents an NH group, with a, b, c representing the molar percentages of each monomer used and responding to the following relations: a+2b+c=100 3< a<75 10<b<25 5<c<20.
Claim 2
Dependent Claim
103 words
A cationic ampholytic water-soluble tetrapolymer for cosmetic compositions for treating keratinous fibers, the tetrapolymer having the following general formula: ##STR2## in which A represents an oxygen atom or an NH group, R represents a hydrogen atom or a methyl group when A represents an NH group, and only a hydrogen atom when A represents an oxygen atom, n is equal to 2 when A represents an oxygen and and n is equal to 3 when A represents an NH group, with a, b, c representing the molar percentages of each monomer used and responding to the following relations: a+2b+c=100 3< a<75 10<b<25 5<c<20.
Claim 3
Dependent Claim
70 words
A cationic ampholytic water-soluble tetrapolymer according to claim 1 resulting from copolymerization of: a moles of acrylamide; b moles of 2-acrylamido-2-methyl-propane sulfonic acid; b moles of a basic monomer selected from the group consisting of dimethylaminoethyl acrylate, N-(3-dimethylamino-1-propyl)acrylamide, and N-(3-dimethylamino-1-propyl)methacrylamide; c moles of a cationic monomer selected from the group consisting of N,N,N-3-trimethylacrylamido-propanaminium chloride, N,N,N-3-trimethylmethacrylamide-propanaminium chloride, N,N,N-2-trimethylacryloyloxy-ethanaminium chloride, and dimethylaminoethyl acrylate hydrochloride; with the following relations: a+2b+c=100 30<a<75 10<b<25 5<c<20.
Claim 4
Dependent Claim
25 words
A tetrapolymer according to claim 1, containing in molar proportions 75% of acrylamide, 10% of 2-acrylamido-2-methyl-propanesulfonic acid, 10% of N-(3-dimethylamino-1-propyl)-methacrylamide, and 5% of N,N,N-3-trimethylmethacrylamido-propanaminium chloride.
Claim 5
Dependent Claim
25 words
A tetrapolymer according to claim 1, containing in molar proportions, 40% of acrylamide, 20% of 2-acrylamido-2-methyl-propanesulfonic acid, 20% of N-(3-dimethylamino-1-propyl)-methacrylamide and 20% of N,N,N-3-trimethylmethacrylamido-propanaminium chloride.
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) | 1989-05-19 | 1989-11-18 | 1990-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-05-19 | 1993-11-18 | 1994-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-05-19 | 1997-11-18 | 1998-05-20 | $7700.00 | Window Closed / Lapsed |