US3004952A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hardenable compositions comprising epoxide compounds and boron trifluorides
Assignee: BASF Schweiz AG
•
Filing: 1959-03-23
•
Granted: 1961-10-17
•
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
2026-11-01 08:07
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/14; C08G59/1433; C08G59/1438; C08G59/18; C08G59/68; C08G59/72; C08G65/00; C08G65/02; C08G65/04; C08G65/06; C08G65/16; C08G65/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
A PROCESS WHICH COMPRISES REACTING (1) A 1,2-EPOXIDE COMPOUND HAVING A 1,2-EPOXIDE EQUIVALENCY GREATER THAN 1 WITH (2) TETRAHYDROFURANE, WHICH COMPRISES CONTACTING (1) AND (2) WITH (3) BORON TRIFLUORIDE, AND (4) A COMPLEX-FORMING COMPOUND CAPABLE OF FORMING A STABLE COMPLEX WITH BORON TRIFLUORIDE, SELECTED FROM THE GROUP CONSISTING OF WATER, AMMONIA, ETHYLAMINE, ETHYLENEDIAMINE, MONOETHANOLAMINE, PIPERIDINE, TRIETHANOLAMINE, UREA, HEXAMETHYLENE TETRAMINE, TRIMETHYLAMINE, PYRIDINE, ANILINE, TOLUIDINE AND SCHIFF''S BASES, ABOUT 0.2 TO ABOUT 3.0 PARTS BY WEIGHT OF THE COMPLEX FORMING COMPOUND BEING EMPLOYED FOR EACH PART BY WEIGHT OF BORON TRIFLUORIDE AND 5-50 PARTS BY WEIGHT OF TETRAHYDROFURANE FOR EVERY 100 PARTS BY WEIGHT OF THE 1,2-EPOXIDE COMPOUND, AND CURING THE REACTION PRODUCT.
Claim 2
Dependent Claim
111 words
A PROCESS WHICH COMPRISES REACTING (1) A 1,2-EPOXIDE COMPOUND HAVING A 1,2-EPOXIDE EQUIVALENCY GREATER THAN 1 WITH (2) TETRAHYDROFURANE, WHICH COMPRISES CONTACTING (1) AND (2) WITH (3) BORON TRIFLUORIDE, AND (4) A COMPLEX-FORMING COMPOUND CAPABLE OF FORMING A STABLE COMPLEX WITH BORON TRIFLUORIDE, SELECTED FROM THE GROUP CONSISTING OF WATER, AMMONIA, ETHYLAMINE, ETHYLENEDIAMINE, MONOETHANOLAMINE, PIPERIDINE, TRIETHANOLAMINE, UREA, HEXAMETHYLENE TETRAMINE, TRIMETHYLAMINE, PYRIDINE, ANILINE, TOLUIDINE AND SCHIFF''S BASES, ABOUT 0.2 TO ABOUT 3.0 PARTS BY WEIGHT OF THE COMPLEX FORMING COMPOUND BEING EMPLOYED FOR EACH PART BY WEIGHT OF BORON TRIFLUORIDE AND 5-50 PARTS BY WEIGHT OF TETRAHYDROFURANE FOR EVERY 100 PARTS BY WEIGHT OF THE 1,2-EPOXIDE COMPOUND, AND CURING THE REACTION 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) | 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 |