US3720701A
Expired / Lapsed
US
⏱️ 0.0 years remaining
9,10-bridged anthracene compounds
Assignee: Eastman Kodak Co
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Filing: 1970-11-30
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Granted: 1973-03-13
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Expires: 1990-11-30
Abstract
Abstract New 9,10-bridged anthracene compounds, such as 9,10bis(carbethoxy)triptycene improve certain properties of polyesters prepared by polymerization or dicarboxylic acid, such as terephthalic acid, and an alkylene glycol, such as ethylene glycol, when incorporated in the polymerization mixture.
Inventors
- 👤 B Klanderman
- 👤 J Faber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:49
CPC Classifications
C; C07; C07D; C07D209/00; C07D209/56; C07D209/58; C07C; C07C61/00; C07C61/16; C07C61/39; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/16; C08G63/18; C08G63/181; C08G63/185; C08G63/187; C08G63/19; C08G63/193; C08G63/197; C08G63/52; C08G63/54
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
118 words
A 9,10-bridged anthracene compound having the general formula: wherein X and Y each represents the same member selected from the group consisting of a carboxy group, a carbalkoxy group of two to five carbon atoms and an R1COOR2- group wherein R1 is alkyl of one to four carbon atoms and R2 is alkylene of one to four carbon atoms and Q represents: wherein each R represents a hydrogen atom, a halogen atom or an alkyl group, each R'' is a hydrogen atom and wherein both R''s collectively represent a chemical bond, (3) a bicyclohexano group, (4) a bicycloheptano group, (5) a bicycloctano group, (6) a bicyclononano group, (7) a 5-membered cycloalkphatic ring or (8) a 6-membered cycloaliphatic ring.
Claim 2
Dependent Claim
118 words
A 9,10-bridged anthracene compound having the general formula: wherein X and Y each represents the same member selected from the group consisting of a carboxy group, a carbalkoxy group of two to five carbon atoms and an R1COOR2- group wherein R1 is alkyl of one to four carbon atoms and R2 is alkylene of one to four carbon atoms and Q represents: wherein each R represents a hydrogen atom, a halogen atom or an alkyl group, each R'' is a hydrogen atom and wherein both R''s collectively represent a chemical bond, (3) a bicyclohexano group, (4) a bicycloheptano group, (5) a bicycloctano group, (6) a bicyclononano group, (7) a 5-membered cycloalkphatic ring or (8) a 6-membered cycloaliphatic ring.
Claim 3
Dependent Claim
16 words
A compound in accordance with claim 1 wherein X and Y each represents a carboxy group.
Claim 4
Dependent Claim
16 words
A compound in accordance with claim 1 wherein X and Y each represents an acetoxymethyl group.
Claim 5
Dependent Claim
12 words
A compound in accordance with claim 1 wherein Q is ortho phenylene.
Claim 6
Dependent Claim
11 words
A compound in accordance with claim 1 wherein Q is 2,3-bicyclo(2.2.1)heptano.
Claim 7
Dependent Claim
11 words
A compound in accordance with claim 1 wherein Q is ethano.
Claim 8
Dependent Claim
13 words
A compound in accordance with claim 1 wherein said compound is 9,10 bis(acetoxymethyl)triptycene.
Claim 9
Dependent Claim
12 words
A compound in accordance with claim 1 wherein said compound is 9,10-dihydro-9,10-bis(acetoxymethyl)-9,10-ethanoanthracene.
Claim 10
Dependent Claim
13 words
A compound in accordance with claim 1 wherein said compound is 9,10-dihydro-9,10-bis(acetoxymethyl)-9,10-(e,3 -bicyclo(2.2.1)heptano)anthracene.
Claim 11
Dependent Claim
13 words
A compound in accordance with claim 1 wherein said compound is 9,10-triptycenedicarboxylic acid.
References Cited (Backward Citations)
US3396148A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-12 | 1976-09-11 | 1977-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-12 | 1980-09-11 | 1981-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-12 | 1984-09-11 | 1985-03-13 | $7700.00 | Window Closed / Lapsed |