Patent US3004931A successfully refreshed from Google Patents.
US3004931A
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Hardenable compositions comprising epoxide compounds and tetrahydrofurane
Assignee: BASF Schweiz AG
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Filing: 1959-03-23
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Granted: 1961-10-17
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Expires: 1979-03-23
Abstract
No abstract record available.
Inventors
- 👤 Brueschweiler Hans
- 👤 Zuppinger Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:30
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/14; C08G59/1433; C08G59/1438; C08G59/18; C08G59/40; C08G59/4007; C08G59/4078; C08G59/66; C08G65/00; C08G65/02; C08G65/04; C08G65/06; C08G65/16; C08G65/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
A PROCESS OF REACTING (1) A 1,2-EPOXIDE COMPOUND HAVING A 1,2-EPOXIDE EQUIVALENCY GREATER THAN 1 WITH (2) TETRAHYDROFURANE, WHICH COMPRISES CONTACTING (1) AND (1) WITH A METAL FLUOROBORATE SELECTED FROM THE GROUP CONSISTING OF THE FLUOROBORATES OF COPPER, COBALT, MAGNESIUM, CADMIUM, MERCURY, CALCIUM, STRONTIUM, BARIUM, LUMINUM, ZINC, TIN, LEAD, IRON AND NICKEL AS A CATALYST, ABOUT 5-50 PARTS OF TETRAHYDROFURANE BEING EMPOLYED FOR EVERY 100 PARTS BY WEIGHT OF 1,2-EPOXIDE COMPOUND AND CURING THE REACTION PRODUCT.
Claim 2
Dependent Claim
76 words
A PROCESS OF REACTING (1) A 1,2-EPOXIDE COMPOUND HAVING A 1,2-EPOXIDE EQUIVALENCY GREATER THAN 1 WITH (2) TETRAHYDROFURANE, WHICH COMPRISES CONTACTING (1) AND (1) WITH A METAL FLUOROBORATE SELECTED FROM THE GROUP CONSISTING OF THE FLUOROBORATES OF COPPER, COBALT, MAGNESIUM, CADMIUM, MERCURY, CALCIUM, STRONTIUM, BARIUM, LUMINUM, ZINC, TIN, LEAD, IRON AND NICKEL AS A CATALYST, ABOUT 5-50 PARTS OF TETRAHYDROFURANE BEING EMPOLYED FOR EVERY 100 PARTS BY WEIGHT OF 1,2-EPOXIDE COMPOUND AND CURING THE REACTION PRODUCT.
References Cited (Backward Citations)
FR898269A
Cited
US2902398A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-10-16 | 1965-04-17 | 1965-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-16 | 1969-04-17 | 1969-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-16 | 1973-04-17 | 1973-10-17 | $7700.00 | Window Closed / Lapsed |