US3963738A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bis-oxadiazolyl phenyl aromatic diester compounds and their use as ultraviolet stabilizers in organic compositions
Assignee: Eastman Kodak Co
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Filing: 1974-07-01
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Granted: 1976-06-15
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Expires: 1994-07-01
Abstract
Abstract The invention relates to bis-oxadiazolyl phenyl aromatic diesters compounds which have been found to be extremely effective ultraviolet stabilizers. The invention also relates to ultraviolet degradable organic compositions containing an amount of a bis-heterocyclic benzoate composition to prevent such degradation. These stabilizers are effective in the presence of other additives commonly employed in polymeric compositions including, for example, pigments, colorants, fillers, reinforcing agents and the like. These ultraviolet stabilizers may also be incorporated into the organic compositions such as polymers by adding to the polymer melt or dissolved in the polymer dope, coated on the exterior of the shaped or molded article, film or extruded fiber.
Inventors
- 👤 Gether Irick, Jr.
- 👤 Charles A. Kelly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:51
CPC Classifications
C; C07; C07D; C07D271/00; C07D271/02; C07D271/10; C07D271/107; C07D285/00; C07D285/01; C07D285/02; C07D285/04; C07D285/12; C09; C09K; C09K15/00; C09K15/04; C09K15/30; Y; Y10; Y10S; Y10S524/00; Y10S524/925; Y10S524/929
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
133 words
A composition of matter of the formula: ##EQU2## wherein A is a member having the structure ##SPC14## wherein Z is an oxygen atom; R 1 and R 2 are hydrogen, chloro, bromo, lower alkyl, and cyano and are present on all positions of the benzenoid rings, except the carbon atoms attached to the carboxyl group connecting the heterocyclic aromatic A group with the aromatic B group, said carboxyl connecting group is attached to the benzenoid ring in either the meta or para position from the carbon atom connected to the heterocyclic ring; B is a group having the formula ##SPC15## wherein at least one R 3 or R 7 is hydrogen and the other R 3 , R 4 , R 5 , R 6 and R 7 are hydrogen, lower alkyl, hydroxy,
Claim 2
Dependent Claim
133 words
A composition of matter of the formula: ##EQU2## wherein A is a member having the structure ##SPC14## wherein Z is an oxygen atom; R 1 and R 2 are hydrogen, chloro, bromo, lower alkyl, and cyano and are present on all positions of the benzenoid rings, except the carbon atoms attached to the carboxyl group connecting the heterocyclic aromatic A group with the aromatic B group, said carboxyl connecting group is attached to the benzenoid ring in either the meta or para position from the carbon atom connected to the heterocyclic ring; B is a group having the formula ##SPC15## wherein at least one R 3 or R 7 is hydrogen and the other R 3 , R 4 , R 5 , R 6 and R 7 are hydrogen, lower alkyl, hydroxy,
Claim 3
Dependent Claim
59 words
A composition of matter according to claim 1 having the formula: ##SPC16## wherein R 1 and R 2 are hydrogen, chloro, bromo, lower alkyl, cyano; and at least one R 3 or R 7 is hydrogen and the other R 3 , R 4 , R 5 , R 6 and R 7 are hydrogen, lower alkyl, hydroxy, nitrile,
Claim 4
Dependent Claim
43 words
A composition of matter according to claim 2 having the formula: ##SPC17## wherein R 1 and R 2 are hydrogen, lower alkyl, or nitrile; and R 3 , R 4 , R 5 , R 6 and R 7 are hydrogen, lower alkyl,
Claim 5
Dependent Claim
43 words
A composition of matter according to claim 2 having the formula: ##SPC18## wherein R 1 and R 2 are hydrogen, lower alkyl, or nitrile; and R 3 , R 4 , R 5 , R 6 and R 7 are hydrogen, lower alkyl,
Claim 6
Dependent Claim
8 words
A composition of matter having the formula: ##SPC19##
Claim 7
Dependent Claim
8 words
A composition of matter having the formula: ##SPC19##
Claim 8
Dependent Claim
8 words
A composition of matter having the formula: ##SPC20##
Claim 9
Dependent Claim
8 words
A composition of matter having the formula: ##SPC20##
Claim 10
Dependent Claim
8 words
A composition of matter having the formula: ##SPC21##
Claim 11
Dependent Claim
8 words
A composition of matter having the formula: ##SPC21##
Claim 12
Dependent Claim
8 words
A composition of matter having the formula: ##SPC22##
Claim 13
Dependent Claim
8 words
A composition of matter having the formula: ##SPC22##
Claim 14
Dependent Claim
8 words
A composition of matter having the formula: ##SPC23##
Claim 15
Dependent Claim
8 words
A composition of matter having the formula: ##SPC23##
Claim 16
Dependent Claim
8 words
A composition of matter having the formula ##SPC24##
Claim 17
Dependent Claim
8 words
A composition of matter having the formula ##SPC24##
Claim 18
Dependent Claim
8 words
A compositon of matter having the formula: ##SPC25##
Claim 19
Dependent Claim
8 words
A compositon of matter having the formula: ##SPC25##
Claim 20
Dependent Claim
8 words
A compositon of matter having the formula: ##SPC26##
Claim 21
Dependent Claim
8 words
A compositon of matter having the formula: ##SPC26##
Claim 22
Dependent Claim
3 words
The compound di-2,4-dichlorophenyl
Claim 23
Dependent Claim
3 words
The compound di-2,4-dichlorophenyl
Claim 24
Dependent Claim
4 words
The compound di-4-tert-octylphenyl 2,5-diphenyl-1,3,4-oxadiazol-4',4"-dicarboxylate.
Claim 25
Dependent Claim
4 words
The compound di-4-tert-octylphenyl 2,5-diphenyl-1,3,4-oxadiazol-4',4"-dicarboxylate.
References Cited (Backward Citations)
US2765304A
Cited
US2741621A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-06-15 | 1979-12-15 | 1980-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-15 | 1983-12-15 | 1984-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-15 | 1987-12-15 | 1988-06-15 | $7700.00 | Window Closed / Lapsed |