US4412024A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concentrated solutions of aromatic oxamide stabilizers
Assignee: Clariant Finance BVI Ltd
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Filing: 1981-09-14
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Granted: 1983-10-25
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Expires: 2001-09-14
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, C1-12 alkoxy, 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
2026-10-23 06:28
CPC Classifications
C; C09; C09K; C09K15/00; C09K15/04; C09K15/20; C09K15/22; C08; C08K; C08K5/00; C08K5/16; C08K5/20; C09K15/24; C09K15/28; 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: 21
Claim 1
Independent Claim
99 words
A solid or liquid concentrate comprising a solution of at least 30% by weight of a mixture of compounds of formula I ##STR8## in which R is C 6-22 alkyl or C 8-14 alkoxy R 1 and R 2 are independently, hydrogen, C 1-8 alkyl, C 1-12 alkoxy, C 1-12 alkylthio, phenoxy or phenylthio; provided that R 1 and R 2 may not both be selected from alkylthio, phenoxy and phenylthio; and R 3 is hydrogen or C 1-8 alkyl in a solid or liquid organic solvent, said mixture containing compounds of formula I having different isomers of R.
Claim 2
Dependent Claim
99 words
A solid or liquid concentrate comprising a solution of at least 30% by weight of a mixture of compounds of formula I ##STR8## in which R is C 6-22 alkyl or C 8-14 alkoxy R 1 and R 2 are independently, hydrogen, C 1-8 alkyl, C 1-12 alkoxy, C 1-12 alkylthio, phenoxy or phenylthio; provided that R 1 and R 2 may not both be selected from alkylthio, phenoxy and phenylthio; and R 3 is hydrogen or C 1-8 alkyl in a solid or liquid organic solvent, said mixture containing compounds of formula I having different isomers of R.
Claim 3
Dependent Claim
46 words
A concentrate according to claim 1 comprising a solution of at least 30% by weight of a mixture of compounds of formula Ia ##STR9## in which R a is C 8-18 alkyl and R 1a is methoxy or ethoxy in a solid or liquid organic solvent.
Claim 4
Dependent Claim
19 words
A concentrate according to claim 1 in which the organic solvent is a hydrocarbon solvent liquid at room temperature.
Claim 5
Dependent Claim
38 words
A liquid finish comprising a solution or dispersion of one or more organic polymers or polymer precursors in an organic solvent, and containing 0.02-5% by weight of a mixture of compounds of formula I, stated in claim 1.
Claim 6
Dependent Claim
13 words
A liquid finish according to claim 4 which is a stoving automotive finish.
Claim 7
Dependent Claim
22 words
A liquid finish according to claim 5 which is a clear top coat to be applied over a layer of metallic finish.
Claim 8
Dependent Claim
20 words
A finish in cured form after application to a substrate, obtained by curing a liquid finish according to claim 4.
Claim 9
Dependent Claim
19 words
A concentrate according to claim 1 wherein, in the compounds of formula I, R is in the 4' position.
Claim 10
Dependent Claim
12 words
A concentrate according to claim 8 wherein R is C 8-18 alkyl.
Claim 11
Dependent Claim
10 words
A concentrate according to claim 9 wherein R is docecyl.
Claim 12
Dependent Claim
27 words
A concentrate according to claim 1 wherein, in the compounds of formula I, R 1 and R 2 are hydrogen, methyl, ethyl, C 1-8 alkoxy or methylthio.
Claim 13
Dependent Claim
22 words
A concentrate according to claim 11 wherein R 1 is C 1-8 alkoxy and R 2 is hydrogen or C 1-8 alkoxy.
Claim 14
Dependent Claim
21 words
A concentrate according to claim 9 wherein R 1 and R 2 are hydrogen, methyl, ethyl, C 1-8 alkoxy or methylthio.
Claim 15
Dependent Claim
18 words
A concentrate according to claim 12 wherein R 1 is methoxy or ethoxy and R 2 is hydrogen.
Claim 16
Dependent Claim
20 words
A concentrate according to claim 14 wherein R is dodecyl and R 1 is ethoxy and R 3 is hydrogen.
Claim 17
Dependent Claim
27 words
A concentrate according to claim 1 wherein the solvent is an aromatic or aliphatic hydrocarbon, an alcohol, an ether, a ketone, an ester or a polyalkylene oxide.
Claim 18
Dependent Claim
21 words
A concentrate according to claim 3 in which the hydrocarbon solvent is benzene, toluene, xylene, hexane, octane or a petroleum fraction.
Claim 19
Dependent Claim
12 words
A concentrate according to claim 17 in which the solvent is xylene.
Claim 20
Dependent Claim
12 words
A concentrate according to claim 13 in which the solvent is xylene.
Claim 21
Dependent Claim
17 words
A concentrate according to claim 19 containing 50 to 80% by weight of compounds of formula I.
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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) | 1986-10-24 | 1987-04-25 | 1987-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-24 | 1991-04-25 | 1991-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-24 | 1995-04-25 | 1995-10-25 | $7700.00 | Window Closed / Lapsed |