US4299944A
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Process for producing epihalohydrin copolymer rubber
Assignee: Zeon Corp
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Filing: 1980-06-25
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Granted: 1981-11-10
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Expires: 2000-06-25
Abstract
Abstract A process for producing an epihalohydrin copolymer rubber, which comprises copolymerizing an epihalohydrin with another epoxy compound using as a catalyst the reaction product of an organoaluminum compound, a phosphoric acid compound and 1,8-diaza-bicyclo(5,4,0)undecene-7 or its salt.
Inventors
- 👤 Akio Maeda
- 👤 Tatuo Usui
- 👤 Atsushi Yasuda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:59
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/02; C08G65/04; C08G65/06; C08G65/08; C08G65/10; C08G65/12; C08G65/22; C08G65/24
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
37 words
A process for producing an epihalohydrin copolymer rubber, which comprises copolymerizing an epihalohydrin with another epoxy compound using as a catalyst the reaction product of an organoaluminum compound, a phosphoric acid compound and 1,8-diaza-bicyclo(5,4,0)undecene-7 or its salt.
Claim 2
Dependent Claim
37 words
A process for producing an epihalohydrin copolymer rubber, which comprises copolymerizing an epihalohydrin with another epoxy compound using as a catalyst the reaction product of an organoaluminum compound, a phosphoric acid compound and 1,8-diaza-bicyclo(5,4,0)undecene-7 or its salt.
Claim 3
Dependent Claim
44 words
The process of claim 1 wherein the organoaluminum compound is a compound represented by the following general formula A1R.sub.2 X.sub.3-n wherein R is a hydrocarbon radical, X is a hydrogen atom or a halogen atom, and n is an integer of 1 to 3.
Claim 4
Dependent Claim
18 words
The process of claim 1 wherein the phosphoric acid is orthophosphoric acid, condensed phosphoric acid, or phosphorous acid.
Claim 5
Dependent Claim
20 words
The process of claim 1 wherein the salt of 1,8-diaza-bicyclo(5,4,0)undecene-7 is carbonate, 2-ethylhexanoate, oleate, p-toluenesulfonate, formate or phenolate of 1,8-diaza-bicyclo(5,4,0)undecene-7.
Claim 6
Dependent Claim
10 words
The process of claim 1 wherein the epihalohydrin is epichlorohydrin.
Claim 7
Dependent Claim
31 words
The process of claim 1 wherein the other compound is an alkylene oxide, an alicyclic epoxide, an alkyl or aryl glycidyl ether, glycidyl acrylate, glycidyl methacrylate, styrene oxide, or epoxy stearate.
Claim 8
Dependent Claim
38 words
The process of claim 1 wherein the catalyst is a catalyst prepared by reacting 1 mol of the organoaluminum compound, 0.01 to 10 mols of the phosphoric acid, and 0.001 to 10 mols of 1,8-diaza-bicyclo(5,4,0)undecene-7 or its salt.
Claim 9
Dependent Claim
27 words
The process of claim 1 wherein 20 to 98 mol % of the epihalohydrin and 80 to 2 mol % of the other epoxy compound are used.
Claim 10
Dependent Claim
14 words
The process of claim 1 wherein the copolymerization is carried out in a solvent.
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) | 1984-11-09 | 1985-05-11 | 1985-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-11-09 | 1989-05-11 | 1989-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-11-09 | 1993-05-11 | 1993-11-10 | $7700.00 | Window Closed / Lapsed |