US3240752A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyester compositions light stabilized with dibenzoyl methane
Assignee: Eastman Kodak Co
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Filing: 1961-11-09
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Granted: 1966-03-15
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Expires: 1981-11-09
Abstract
No abstract record available.
Inventors
- 👤 John W Tamblyn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:59
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/13; C08K5/132
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
A LIGHT STABILIZED POLYESTER COMPOSITION CONTAINING O-HYDROXYDIBENZOYL METHANE AT A CONCENTRATION IN A RANGE FROM ABOUT 0.1 TO ABOUT 10 PERCENT BY WEIGHT OF THE COMPOSITION, SAID POLYESTER COMPOSITION CONSISTING ESSENTIALLY OF ABOUT EQUAL MOLE PROPORTIONS OF (1) A DICARBOXYLIC ACID SELECTED FROM THE GROUP CONSISTING OF TEREPHTHALIC ACID, 4,4''-SULFONYLDIBENZOIC ACID AND SEBACIC ACID AND (2) A GLYCOL SELECTED FROM THE GROUP CONSISTING OF 1,5-PENTANEDIOL AND 1,4-CYCLOHEXANEDIMETHANOL.
Claim 2
Dependent Claim
67 words
A LIGHT STABILIZED POLYESTER COMPOSITION CONTAINING O-HYDROXYDIBENZOYL METHANE AT A CONCENTRATION IN A RANGE FROM ABOUT 0.1 TO ABOUT 10 PERCENT BY WEIGHT OF THE COMPOSITION, SAID POLYESTER COMPOSITION CONSISTING ESSENTIALLY OF ABOUT EQUAL MOLE PROPORTIONS OF (1) A DICARBOXYLIC ACID SELECTED FROM THE GROUP CONSISTING OF TEREPHTHALIC ACID, 4,4''-SULFONYLDIBENZOIC ACID AND SEBACIC ACID AND (2) A GLYCOL SELECTED FROM THE GROUP CONSISTING OF 1,5-PENTANEDIOL AND 1,4-CYCLOHEXANEDIMETHANOL.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-14 | 1969-09-13 | 1970-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-14 | 1973-09-13 | 1974-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-14 | 1977-09-13 | 1978-03-15 | $7700.00 | Window Closed / Lapsed |