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US3882121A
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Dicarboxylic compounds having 2,4-quinazol inedione rings
Assignee: IFP Energies nouvelles
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Filing: 1972-09-13
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Granted: 1975-05-06
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Expires: 1992-09-13
Abstract
Abstract A dicarboxylic compound complying with one of the general formulae: IN WHICH R is a divalent radical selected from the aliphatic, alicyclic and aromatic radicals the aliphatic containing 1-20 carbon atoms and the other containing from 5 to 20 carbon atoms, R1 is selected from the hydrogen atom and the alkyl and cycloalkyl groups containing from 1 to 10 carbon atoms and R2 is selected from the alkyl and cycloalkyl groups containing from 1 to 10 carbon atoms, the polyester resins derived therefrom being usable as enamelling composition, particularly for coating metal wires.
Inventors
- 👤 Choua Cohen
- 👤 Bruno Durif-Varambon
- 👤 Robert Salle
- 👤 Bernard Sillion
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:52
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/42; C; C07; C07C; C07C273/00; C07C273/18; C07C273/1809; C07C273/1818; C07C273/1827; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/38; C08G18/3819; C08G18/3821; C08G18/40; C08G18/42; C08G18/46; C08G18/4615; C08G18/4638; C08G18/4653; C08G63/00; C08G63/68; C08G63/685; C08G63/6854; C08L; C08L67/00; A; A61; A61H; A61H2201/00; A61H2201/10; A61H2201/102; A61N; A61N2/00
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
29 words
A COMPOUND OF THE FORMULA: (2,4-DI(O=),(R1-OOC-)-1,2,3,4-TETRAHYDROIN WHICH R IS ALKYLENE OF 1-20 CARBON ATOMS, PHENYLENE, TOLYLENE, ETHYLPHENYLENE, CHLOROPHENYLENE, BIPHENYLENE, NAPHTHYLENE, OR A DIVALENT RADICAL OF THE FORMULA: -1,4-PHENYLENE-X-1,4-PHENYLENEQUINAZOLIN-3-YL)2-R OR
Claim 2
Dependent Claim
29 words
A COMPOUND OF THE FORMULA: (2,4-DI(O=),(R1-OOC-)-1,2,3,4-TETRAHYDROIN WHICH R IS ALKYLENE OF 1-20 CARBON ATOMS, PHENYLENE, TOLYLENE, ETHYLPHENYLENE, CHLOROPHENYLENE, BIPHENYLENE, NAPHTHYLENE, OR A DIVALENT RADICAL OF THE FORMULA: -1,4-PHENYLENE-X-1,4-PHENYLENEQUINAZOLIN-3-YL)2-R OR
Claim 3
Dependent Claim
13 words
A compound as defined by claim 1 wherein said compound is Formula (I).
Claim 4
Dependent Claim
16 words
A compound as defined by claim 1 wherein said compound is a compound of Formula (II).
Claim 5
Dependent Claim
24 words
A compound as defined by claim 2 wherein R is (CH2)n wherein n is an integer from 4 to 8, phenylene, tolylene, ethylphenylene, chlorophenylene,
Claim 6
Dependent Claim
18 words
A compound as defined by claim 3 wherein R is (CH2)n wherein n is 1-10, phenylene or naphthylene.
Claim 7
Dependent Claim
29 words
A compound as defined by claim 2, said compound being selected from the group consisting of 4,4''-methylene biphenylene-bis((7-carboxy 2,4-quinazolinedione) 3-yl), the dimethyl ester thereof and the diethyl ester thereof.
Claim 8
Dependent Claim
28 words
A compound as defined by claim 2, said compound being selected from the group consisting of 4,4''-oxybiphenylene-bis((7-carboxy 2,4-quinazolinedione) 3-yl), the dimethyl ester thereof and the diethyl ester thereof.
Claim 9
Dependent Claim
28 words
A compound as defined by claim 2, said compound being selected from the group consisting of 1,6-hexamethylene-bis((7-carboxy 2,4-quinazolinedione) 3-yl), the dimethyl ester thereof and the diethyl ester thereof.
Claim 10
Dependent Claim
28 words
A compound as defined by claim 2, said compound being selected from the group consisting of 2,4-tolylene bis((7-carboxy 2,4-quinazolinedione)3-yl), the dimethyl ester thereof and the diethyl ester thereof.
Claim 11
Dependent Claim
25 words
A compound as defined by claim 3, said compound being selected from the group consisting of 3-(p. methoxycarbonyl phenyl)7-methoxylcarbonyl 2,4-quinazolinedione and 3-(p. ethoxy-carbonyl-phenyl) 7-ethoxycarbonyl 2,4-quinazolinedione.
Claim 12
Dependent Claim
13 words
A compound as defined by claim 6, said compound being said dimethyl ester.
References Cited (Backward Citations)
US3781288A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-05 | 1978-11-04 | 1979-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-05 | 1982-11-04 | 1983-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-05 | 1986-11-04 | 1987-05-06 | $7700.00 | Window Closed / Lapsed |