US4780310A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cosmetic compositions based upon N-hydroxypropyl-chitosans, new N-hyroxypropyl-chitosans, as well as processes for the production thereof
Assignee: Procter and Gamble Deutschland GmbH
•
Filing: 1986-11-21
•
Granted: 1988-10-25
•
Expires: 2006-11-21
Abstract
Abstract Cosmetic compositions are disclosed, for the treatment of skin or hair, with a content of new N-hydroxypropyl-chitosan derivatives, composed of (a) 4 to 40 Mol-% units of Formula (I) <IMAGE> (I) and (b) 60 to 96 Mol-% units of Formula (II) <IMAGE> (II) wherein R1 and R2 are the same or different and are each hydrogen or the group <IMAGE> with n being equal to an integer from 1 to 5, with the proviso that in at least 50% of the units of (II), R1 and R2 are not simultaneously hydrogen, or the salts thereof; along with new N-hydroxypropyl-chitosan derivatives and their salts as well as a process for the production of these new compounds from propylene oxide and chitosan.
Inventors
- 👤 Guther Lang
- 👤 Gerhard Maresch
- 👤 Harald Wendel
- 👤 Eugen Konrad
- 👤 Hans-Rudi Lenz
- 👤 Jurgen Titze
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:04
CPC Classifications
A; A61; A61Q; A61Q5/00; A61Q5/02; A61K; A61K8/00; A61K8/18; A61K8/72; A61K8/73; A61K8/736; A61Q19/00; A61Q5/06; A61Q5/065; A61Q5/12; C; C08; C08B; C08B37/00; C08B37/0006; C08B37/0024; C08B37/0027; C08B37/003; A61Q5/04; A61Q5/10
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
110 words
Cosmetic composition for the treatment of hair or skin, comprising as active ingredient an effective amount of N-hydroxypropyl-chitosan composed of (a) 4 to 40 Mol-% units of the Formula (I) ##STR10## (b) 60 to 96 Mol -% units of the Formula (II) ##STR11## wherein R 1 and R 2 are the same or different and are each hydrogen or the group ##STR12## with n being equal to an integer from 1 to 5, with the proviso that in at least 50% of the units of Formula (II), R 1 and R 2 are not simultaneously hydrogen, or the salts thereof in the form of an aqueous, alcoholic or aqueous-alcoholic preparation.
Claim 2
Dependent Claim
110 words
Cosmetic composition for the treatment of hair or skin, comprising as active ingredient an effective amount of N-hydroxypropyl-chitosan composed of (a) 4 to 40 Mol-% units of the Formula (I) ##STR10## (b) 60 to 96 Mol -% units of the Formula (II) ##STR11## wherein R 1 and R 2 are the same or different and are each hydrogen or the group ##STR12## with n being equal to an integer from 1 to 5, with the proviso that in at least 50% of the units of Formula (II), R 1 and R 2 are not simultaneously hydrogen, or the salts thereof in the form of an aqueous, alcoholic or aqueous-alcoholic preparation.
Claim 3
Dependent Claim
18 words
The composition according to claim 1, containing said N-hydroxypropyl-chitosan in an amount from 0.05 to 10.0% by weight.
Claim 4
Dependent Claim
18 words
The composition according to claim 2, provided in the form of a solution, cream, gel, dispersion or emulsion.
Claim 5
Dependent Claim
13 words
The composition according to claim 1, having a pH-value from 2 to 11.
Claim 6
Dependent Claim
66 words
The composition according to claim 1, further comprising a film-forming, synthetic or natural cosmetic polymer which is selected from the group consisting of shellac, alginate, gelatin, pectin, cellulose derivatives, polyvinylpyrrolidone, polyvinylacetate, acrylic acid-polymerizates methacrylic acid-polymerizates, basic polymerizates of esters of acrylic acid basic polymerizates of esters of methacrylic acid with aminoalcohols, the salts of these basic polymerizates quaternization products of these basic polymerizates, polyacrylonitrile and polyvinylpyrrolidone-vinyl-acetate.
Claim 7
Dependent Claim
34 words
The composition according to claim 1, further comprising at least one hair dye in a concentration from 0.01 to 2.0% by weight, and provided in the form of a dye strengthener or tone strengthener.
Claim 8
Dependent Claim
27 words
The composition according to claim 1, further comprising at least one cationic, non-ionic, amphoteric or anionic tenside, and provided in the form of a hair wash composition.
Claim 9
Dependent Claim
26 words
The composition according to claim 7, containing said tenside in a concentration from 3 to 50% by weight, and displaying a pH-value between 3 and 9.
Claim 10
Dependent Claim
50 words
The composition according to claim 1, wherein said aqueous, alcoholic or aqueous-alcoholic preparation, further comprises a propellant liquefied under pressure, said composition being intermixed with said propellant, said mixed composition and propellant being filled into a pressure container and provided in the form of an aerosol spray or aerosol foam.
Claim 11
Dependent Claim
93 words
Macromolecular, N-hydroxypropyl compound derived from chitosan, composed of (a) 4 to 40 Mol-% units of the Formula (I) ##STR13## (b) 60 to 96 Mol-% units of the Formula (II) ##STR14## wherein R 1 and R 2 are the same or different and are each hydrogen or the group ##STR15## with n being equal to an integer from 1 to 5, with the proviso that in at least 50% of the units of Formula (II), R 1 and R 2 are not simultaneously hydrogen, and the soluble salts thereof with organic or inorganic acids.
Claim 12
Dependent Claim
93 words
Macromolecular, N-hydroxypropyl compound derived from chitosan, composed of (a) 4 to 40 Mol-% units of the Formula (I) ##STR13## (b) 60 to 96 Mol-% units of the Formula (II) ##STR14## wherein R 1 and R 2 are the same or different and are each hydrogen or the group ##STR15## with n being equal to an integer from 1 to 5, with the proviso that in at least 50% of the units of Formula (II), R 1 and R 2 are not simultaneously hydrogen, and the soluble salts thereof with organic or inorganic acids.
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) | 1991-10-25 | 1992-04-25 | 1992-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-10-25 | 1996-04-25 | 1996-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-10-25 | 2000-04-25 | 2000-10-25 | $7700.00 | Window Closed / Lapsed |