US4115547A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sunscreening compositions
Assignee: 3M Co
•
Filing: 1976-10-20
•
Granted: 1978-09-19
•
Expires: 1996-10-20
Abstract
Abstract Sunscreening compositions are disclosed which comprise a pharmaceutical extending medium having incorporated therein a substantive, dermally non-irritating, ultraviolet light absorbing compound which is a polyfunctional organic molecule containing two or more ultraviolet absorbing moieties connected by two or more polar linking groups to one or more aliphatic bridging groups. These sunscreening compositions are resistant to removal by water and mild abrasion but are readily removed by soap and water.
Inventors
- 👤 Peter John Degen
- 👤 Anthony James Lucas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:22
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/08; C07F9/09; A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/40; A61K8/42; A61K8/44; A61K8/445; A61K8/49; A61K8/4973; A61K8/498; A61Q; A61Q17/00; A61Q17/04; C07C; C07C275/00; C07C275/28; C07C275/38; C07C275/42; C07D; C07D277/00; C07D277/60; C07D277/62; C07D277/64; C07D277/66; C07D311/00; C07D311/02; C07D311/04; C07D311/06; C07D311/08; C07D311/16
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
144 words
In a sunscreening composition comprising a pharmaceutical extending medium and an effective sunscreening amount of a dermally non-irritating, ultraviolet light-absorbing compound, the improvement wherein the dermally non-irritating, ultraviolet light-absorbing compound is a substantive compound of the formula (XE).sub.n --R--(AY).sub.n.spsb.1 Wherein R is the aliphatic portion of polymerized 18-carbon fatty acids and contains 34, 51, 68, 85 or 102 carbon atoms; A and E are independently ##STR43## X and Y are aromatic, ultraviolet light absorbing moieties characterized by ultraviolet light absorption maxima in the range of 280 nm to about 360 nm, and when n + n 1 is greater than 2, Y may be hydrogen or an alkyl radical containing 1 to 6 carbon atoms; n l and n 1 are independently integers from 1 to 6 designating different or the same (XE)-- and --(AY) respectively, except n + n 1 must equal 2-6.
Claim 2
Dependent Claim
144 words
In a sunscreening composition comprising a pharmaceutical extending medium and an effective sunscreening amount of a dermally non-irritating, ultraviolet light-absorbing compound, the improvement wherein the dermally non-irritating, ultraviolet light-absorbing compound is a substantive compound of the formula (XE).sub.n --R--(AY).sub.n.spsb.1 Wherein R is the aliphatic portion of polymerized 18-carbon fatty acids and contains 34, 51, 68, 85 or 102 carbon atoms; A and E are independently ##STR43## X and Y are aromatic, ultraviolet light absorbing moieties characterized by ultraviolet light absorption maxima in the range of 280 nm to about 360 nm, and when n + n 1 is greater than 2, Y may be hydrogen or an alkyl radical containing 1 to 6 carbon atoms; n l and n 1 are independently integers from 1 to 6 designating different or the same (XE)-- and --(AY) respectively, except n + n 1 must equal 2-6.
Claim 3
Dependent Claim
13 words
A composition according to claim 1 wherein A and E are independently ##STR44##
Claim 4
Dependent Claim
13 words
A composition according to claim 2 wherein X and Y are independently ##STR45##
Claim 5
Dependent Claim
12 words
The composition according to claim 2 wherein A and E are ##STR46##
Claim 6
Dependent Claim
17 words
The composition according to claim 3 wherein the compound is ##STR47## and R contains 34 carbon atoms.
Claim 7
Dependent Claim
17 words
The composition according to claim 3 wherein the compound is ##STR48## wherein n is 2.65 to 2.75.
References Cited (Backward Citations)
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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) | 1981-09-18 | 1982-03-20 | 1982-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-18 | 1986-03-20 | 1986-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-18 | 1990-03-20 | 1990-09-19 | $7700.00 | Window Closed / Lapsed |