US4276406A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalyst for reacting phenolic hydroxyl groups with epoxy groups
Assignee: Dow Chemical Co
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Filing: 1980-04-10
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Granted: 1981-06-30
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Expires: 2000-04-10
Abstract
Abstract Catalysts for reacting vicinal epoxides with an aromatic hydroxyl-containing material result from the treatment of a solid substrate containing a plurality of ion-exchangeable cations with a polymer containing a multiplicity of quaternary onium cations in association with a reactive anion such that after treatment, there remains a sufficient quantity of the quaternary onium cations in association with the reactive anion to catalyze the reaction. These catalysts reduce the quantity of side reactions.
Inventors
- 👤 Georgia A. Monnerat
- 👤 George E. Ham
- 👤 Thomas J. Hairston
- 👤 Melvin J. Hatch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:37
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/02; C08G59/04; C08G59/06; C08G59/066
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
69 words
A process for reacting a vicinal epoxide with an aromatic hydroxyl-containing material in the presence of a catalyst resulting from the treatment of (A) a solid substrate containing a plurality of ion-exchangeable cations treated with (B) a polymer containing a plurality of quaternary onium cations associated with a reactive anion; wherein components (A) and (B) are employed in quantities such that the resultant catalyst contains quaternary onium cation-anion sites.
Claim 2
Dependent Claim
69 words
A process for reacting a vicinal epoxide with an aromatic hydroxyl-containing material in the presence of a catalyst resulting from the treatment of (A) a solid substrate containing a plurality of ion-exchangeable cations treated with (B) a polymer containing a plurality of quaternary onium cations associated with a reactive anion; wherein components (A) and (B) are employed in quantities such that the resultant catalyst contains quaternary onium cation-anion sites.
Claim 3
Dependent Claim
13 words
The process of claim 1 wherein component (A) is a cation exchange resin.
Claim 4
Dependent Claim
12 words
The process of claim 2 wherein said cation exchange resin is macroporous.
Claim 5
Dependent Claim
12 words
The process of claim 1 wherein component (A) is an inorganic substrate.
Claim 6
Dependent Claim
12 words
The process of claim 4 wherein said inorganic substrate is a zeolite.
Claim 7
Dependent Claim
35 words
The process of claims 1, 2, 3, 4 or 5 wherein said quaternary onium cations are ammonium, phosphonium, sulfonium or a mixture thereof and wherein said reactive anion has a nucleophilic constant greater than 2.5.
Claim 8
Dependent Claim
12 words
The process of claim 6 wherein said ractive anion is a halide.
Claim 9
Dependent Claim
16 words
The process of claim 7 wherein component (B) is poly(vinylbenzyltrimethyl ammonium chloride) or poly(diallyldimethyl ammonium chloride).
Claim 10
Dependent Claim
23 words
The process of claims 1, 2, 3, 4 or 5 wherein said vicinal epoxide epichlorohydrin and said aromatic hydroxyl-containing material is bisphenol A.
Claim 11
Dependent Claim
19 words
The process of claim 6 wherein said vicinal epoxide is epichlorohydrin and said aromatic hydroxyl-containing material is bisphenol A.
Claim 12
Dependent Claim
19 words
The process of claim 7 wherein said vicinal epoxide is epichlorohydrin and said aromatic hydroxyl-containing material is bisphenol A.
Claim 13
Dependent Claim
19 words
The process of claim 8 wherein said vicinal epoxide is epichlorohydrin and said aromatic hydroxyl-containing material is bisphenol A.
References Cited (Backward Citations)
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US2986552A
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US3336342A
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US3372142A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-06-29 | 1984-12-29 | 1985-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-06-29 | 1988-12-29 | 1989-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-06-29 | 1992-12-29 | 1993-06-30 | $7700.00 | Window Closed / Lapsed |