US3232994A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel bisphenols and preparation thereof using ion exchange resins
Assignee: Union Carbide Corp
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Filing: 1962-12-27
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Granted: 1966-02-01
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Expires: 1982-12-27
Abstract
No abstract record available.
Inventors
- 👤 Francis N Apel
- 👤 Jr Louis B Conte
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:49
CPC Classifications
C; C08; C08G; C08G64/00; C08G64/04; C08G64/06; C07; C07C; C07C39/00; C07C39/12; C07C39/17; C07C39/24; C07C39/42; C07C2601/00; C07C2601/12; C07C2601/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
METHOD FOR PREPARING A BISPHENOL OF 4-VINYLCYCLOHEXENE WHICH COMPRISES CONTACTING TOGETHER 4-VINYLCYCLOHEXENE AND AT LEAST A STOICHIOMETRIC AMOUNT OF A PHENOL HAVING A REPLACEABLE HYDROGEN IN A POSITION OTHER THAN META TO THE PHENOLIC HYDROXYL AT TEMPERATURES BETWEEN ABOUT 30* AND 150*C. WITH AN ALKYLATION CATALYST CONSISTING ESSENTIALLY OF A SUBSTANTIALLY ANHYDROUS INSOLUBLE ACIDIC CATION EXCHANGING RESIN FOR A TIME SUFFICIENT TO EFFECT REACTION BETWEEN THE 4-VINYLCYCLOHEXENE AND THE PHENL TO PRODUCE A 1,3-BIS(HYDROXYARYL)-1-ETHYLCYCLOHEXANE.
Claim 2
Dependent Claim
74 words
METHOD FOR PREPARING A BISPHENOL OF 4-VINYLCYCLOHEXENE WHICH COMPRISES CONTACTING TOGETHER 4-VINYLCYCLOHEXENE AND AT LEAST A STOICHIOMETRIC AMOUNT OF A PHENOL HAVING A REPLACEABLE HYDROGEN IN A POSITION OTHER THAN META TO THE PHENOLIC HYDROXYL AT TEMPERATURES BETWEEN ABOUT 30* AND 150*C. WITH AN ALKYLATION CATALYST CONSISTING ESSENTIALLY OF A SUBSTANTIALLY ANHYDROUS INSOLUBLE ACIDIC CATION EXCHANGING RESIN FOR A TIME SUFFICIENT TO EFFECT REACTION BETWEEN THE 4-VINYLCYCLOHEXENE AND THE PHENL TO PRODUCE A 1,3-BIS(HYDROXYARYL)-1-ETHYLCYCLOHEXANE.
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) | 1969-01-31 | 1969-08-02 | 1970-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-31 | 1973-08-02 | 1974-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-31 | 1977-08-02 | 1978-02-01 | $7700.00 | Window Closed / Lapsed |