Patent US4485034A successfully refreshed from Google Patents.
US4485034A
Expired / Lapsed
US
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Aromatic oxamides useful as stabilizers
Assignee: Clariant Finance BVI Ltd
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Filing: 1983-09-06
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Granted: 1984-11-27
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Expires: 2003-09-06
Abstract
Abstract Oxalanilides of formula I <IMAGE> I in which R is C6-22 alkyl or C6-22 alkoxy R1 and R2 are independently, hydrogen, C1-8 alkyl, C1-12alkoxy, C1-12 alkylthio, phenoxy or phenylthio; provided that R1 and R2 may not both be selected from alkylthio, phenoxy and phenylthio; and R3 is hydrogen or C1-8 alkyl certain of which are novel, are useful as UV-stabilizers in organic polymers and organic polymer-containing coatings, particularly automotive finishes. The compounds have low volatility and excellent solubility in organic solvents such as are used in liquid finishes.
Inventors
- 👤 Lajos Avar
- 👤 Evelyne Kalt
- 👤 Hellmuth Reinshagen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:31
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/20; C09; C09D; C09D7/00; C09D7/40; C09D7/48; Y; Y10; Y10S; Y10S524/00; Y10S524/906; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31511; Y10T428/31515; Y10T428/31522; Y10T428/31551; Y10T428/31605; Y10T428/31678; Y10T428/31681; Y10T428/31688; Y10T428/31692
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
32 words
A mixture of compounds of formula Ia ##STR9## in which R a is C 8-18 alkyl and R 1a is methoxy or ethoxy, said compounds having differing isomers of R a .
Claim 2
Dependent Claim
32 words
A mixture of compounds of formula Ia ##STR9## in which R a is C 8-18 alkyl and R 1a is methoxy or ethoxy, said compounds having differing isomers of R a .
Claim 3
Dependent Claim
13 words
A mixture according to claim 1 wherein R a is C 10-14 alkyl.
Claim 4
Dependent Claim
11 words
A mixture according to claim 1 wherein R a is dodecyl.
Claim 5
Dependent Claim
11 words
A mixture according to claim 1 wherein R 1a is ethoxy.
Claim 6
Dependent Claim
11 words
A mixture according to claim 2 wherein R 1a is ethoxy.
Claim 7
Dependent Claim
11 words
A mixture according to claim 3 wherein R 1a is ethoxy.
Claim 8
Dependent Claim
35 words
A mixture according to claim 1 which is soluble in an organic solvent to the extent of at least 30% by weight, based on the total weight of the dissolved mixtue and the organic solvent.
Claim 9
Dependent Claim
35 words
A mixture according to claim 2 which is soluble in an organic solvent to the extent of at least 30% by weight, based on the total weight of the dissolved mixture and the organic solvent.
Claim 10
Dependent Claim
35 words
A mixture according to claim 7 which is soluble in an organic solvent to the extent of at least 50% by weight, based on the total weight of the dissolved mixture and the organic solvent.
Claim 11
Dependent Claim
32 words
A mixture according to claim 7 wherein the organic solvent is selected from the group consisting of benzene, toluene, xylene, hexane, octane, methyl ethyl ketone, ethyl acetate and diethylene glycol methyl ether.
Claim 12
Dependent Claim
32 words
A mixtue according to claim 9 wherein the organic solvent is selected from the group consisting of benzene, toluene, xylene, hexane, octane, methyl ethyl ketone, ethyl acetate and diethylene glycol methyl ether.
Claim 13
Dependent Claim
12 words
A mixture according to claim 8 wherein the organic solvent is xylene.
Claim 14
Dependent Claim
12 words
A mixture according to claim 10 wherein the organic solvent is xylene.
Claim 15
Dependent Claim
11 words
Mixture according to claim 11 wherein the organic solvent is xylene.
Claim 16
Dependent Claim
16 words
A mixture according to claim 14 wherein R a is dodecyl and R 1a is ethoxy.
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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) | 1987-11-27 | 1988-05-28 | 1988-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-11-27 | 1992-05-28 | 1992-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-11-27 | 1996-05-28 | 1996-11-27 | $7700.00 | Window Closed / Lapsed |