US2959559A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of unsaturated polyester resins which cure in the presence of air with tack-free surfaces and resulting product
Assignee: Reichhold Chemicals Inc
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Filing: 1957-04-26
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Granted: 1960-11-08
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Expires: 1977-04-26
Abstract
No abstract record available.
Inventors
- 👤 Delius Hermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:33
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/16; C08G63/20; C08L; C08L67/00; C08L67/06; C08L67/08; C09; C09D; C09D167/00; C09D167/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
151 words
A PROCESS FOR PRODUCING AN UNSATURATED MIXED POLYESTER RESINOUS COMPOSITION WHICH WILL CURE IN THE PRESENCE OF AIR WITH A TACK-FREE SURFACE, WHICH PROCESS COMPRISES (A) 1,2-EPOXIDIZING AT LEAST ONE UNSATURATED OIL UNTIL IT HAS REACHED AN OXIRANE CONTENT BETWEEN 1 AND 4 PERCENT AND AN IODINE NUMBER BETWEEN 150 AND 100, (B) ESTERIFYING AN AMOUNT OF 20 TO 90 MOL PERCENT OF AT LEAST ONE ALPHA BETA UNSATURATED DICARBOXYLIC ACID AND AN AMOUNT OF 80 TO 10 MOL PERCENT OF A SATURATED DICARBOXYLIC ACID WITH SUCH AN AMOUNT OF AN ALIPHATIC SATURATED DIHYDRIC ALCOHOL AT TEMPERATURES BETWEEN 170* AND 220* CENTIGRADE THAT THE RESULTING POLYESTERS HAVE ACID NUMBERS BETWEEN 40 AND 120, (C) REACTING THE INTERMEDIATE PRODUCTS OBTAINED BY THE STEPS (A) AND (B), IN SUCH MOLAR RATIOS THAT A PRODUCT HAVING AN ACID NUMBER NOT HIGHER THAN 30 IS ATTAINED, AND BLENDING SAID PRODUCT WITH A POLYMERIZABLE VINYL MONOMER.
Claim 2
Dependent Claim
151 words
A PROCESS FOR PRODUCING AN UNSATURATED MIXED POLYESTER RESINOUS COMPOSITION WHICH WILL CURE IN THE PRESENCE OF AIR WITH A TACK-FREE SURFACE, WHICH PROCESS COMPRISES (A) 1,2-EPOXIDIZING AT LEAST ONE UNSATURATED OIL UNTIL IT HAS REACHED AN OXIRANE CONTENT BETWEEN 1 AND 4 PERCENT AND AN IODINE NUMBER BETWEEN 150 AND 100, (B) ESTERIFYING AN AMOUNT OF 20 TO 90 MOL PERCENT OF AT LEAST ONE ALPHA BETA UNSATURATED DICARBOXYLIC ACID AND AN AMOUNT OF 80 TO 10 MOL PERCENT OF A SATURATED DICARBOXYLIC ACID WITH SUCH AN AMOUNT OF AN ALIPHATIC SATURATED DIHYDRIC ALCOHOL AT TEMPERATURES BETWEEN 170* AND 220* CENTIGRADE THAT THE RESULTING POLYESTERS HAVE ACID NUMBERS BETWEEN 40 AND 120, (C) REACTING THE INTERMEDIATE PRODUCTS OBTAINED BY THE STEPS (A) AND (B), IN SUCH MOLAR RATIOS THAT A PRODUCT HAVING AN ACID NUMBER NOT HIGHER THAN 30 IS ATTAINED, AND BLENDING SAID PRODUCT WITH A POLYMERIZABLE VINYL MONOMER.
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) | 1963-11-08 | 1964-05-09 | 1964-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-08 | 1968-05-09 | 1968-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-08 | 1972-05-09 | 1972-11-08 | $7700.00 | Window Closed / Lapsed |