US2870112A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cross-linked polyesters of dicyclopentadiene dicarboxylic acids
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1956-03-01
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Granted: 1959-01-20
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Expires: 1976-03-01
Abstract
No abstract record available.
Inventors
- 👤 Mertzweiller Joseph Kern
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:21
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/16; C08G63/18; C08G63/199; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/42; C08G18/4205; C08G18/423; C08G18/60; C08G18/67; C08G18/68; C08G18/683; C08G18/686
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
A PROCESS FOR PREPARING POLYESTER RESINS USEFUL IN VARNISHES WHICH COMPRISES HEATING 0.75 TO 1.2 MOLES OF A DICARBOXYLIC ACID SELECTED FROM THE GROUP CONSISTING OF DICYCLOPENTADIENE DICARBOXYLIC ACID, DIMETHYLDICYCLOPENTADIENE DICARBOXYLIC ACID, METHYLDICYCLOPENTADIENE DICARBOXYLIC ACID, AND THE DI- AND TETRAHYDROGENATED DERIVATIVES THEREOF, WITH ONE MOLE OF A C2-C10 GLYCOL AT A TEMPERATURE BETWEEN ABOUT 325* TO 400* F., CONTACTING THE RESINOUS POLYESTER PRODUCT THUS FORMED WITH 5 TO 30 WEIGHT PERCENT, BASED ON THE TOTAL MODIFIED RESIN, OF A CROSS LINKING AGENT SELECTED FROM THE GROUP CONSISTING OF ORGANIC DIISOCYANATES, ORGANIC DIISOTHIOCYANATES, AND MIXTURES THEREOF, AT A TEMPERATURE BETWEEN ABOUT 265* TO 325* F., AND RECOVERING A HARD, MODIFIED POLYESTER RESIN PRODUCT.
Claim 2
Dependent Claim
112 words
A PROCESS FOR PREPARING POLYESTER RESINS USEFUL IN VARNISHES WHICH COMPRISES HEATING 0.75 TO 1.2 MOLES OF A DICARBOXYLIC ACID SELECTED FROM THE GROUP CONSISTING OF DICYCLOPENTADIENE DICARBOXYLIC ACID, DIMETHYLDICYCLOPENTADIENE DICARBOXYLIC ACID, METHYLDICYCLOPENTADIENE DICARBOXYLIC ACID, AND THE DI- AND TETRAHYDROGENATED DERIVATIVES THEREOF, WITH ONE MOLE OF A C2-C10 GLYCOL AT A TEMPERATURE BETWEEN ABOUT 325* TO 400* F., CONTACTING THE RESINOUS POLYESTER PRODUCT THUS FORMED WITH 5 TO 30 WEIGHT PERCENT, BASED ON THE TOTAL MODIFIED RESIN, OF A CROSS LINKING AGENT SELECTED FROM THE GROUP CONSISTING OF ORGANIC DIISOCYANATES, ORGANIC DIISOTHIOCYANATES, AND MIXTURES THEREOF, AT A TEMPERATURE BETWEEN ABOUT 265* TO 325* F., AND RECOVERING A HARD, MODIFIED POLYESTER RESIN PRODUCT.
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) | 1962-01-19 | 1962-07-21 | 1963-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-19 | 1966-07-21 | 1967-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-19 | 1970-07-21 | 1971-01-20 | $7700.00 | Window Closed / Lapsed |