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US4749759A
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Process for the preparation of polymers of inorganic acid salts of monoallylamine or N-substituted monoallylamines
Assignee: Nitto Boseki Co Ltd
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Filing: 1986-01-31
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Granted: 1988-06-07
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Expires: 2006-01-31
Abstract
Abstract High molecular weight polymers are produced in a high yield by polymerizing inorganic acid salts of monoallylamine or N-substituted monoallylamines in a polar solvent in the presence of a specific azo type radical initiator.
Inventors
- 👤 Kiyoshi Shimizu
- 👤 Susumu Harada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:22
CPC Classifications
C; C08; C08F; C08F26/00; C08F26/02
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
99 words
A process for preparing polymers of inorganic acid salts of monoallylamine or N-substituted monoallylamines, which comprises polymerizing inorganic acid salts of monoallylamine or N-substituted monoallylamines in a polar solvent in the presence of a radical initiator represented by the general formula: ##STR5## wherein R 1 , R 2 , R 3 and R 4 represent a same or different hydrocarbon groups, and R 1 and R 2 , and/or R 3 and R 4 may form a ring; R 5 and R 6 represent independently hydrogen or an alkyl group having 1-4 carbon atoms; and X represents an anion.
Claim 2
Dependent Claim
99 words
A process for preparing polymers of inorganic acid salts of monoallylamine or N-substituted monoallylamines, which comprises polymerizing inorganic acid salts of monoallylamine or N-substituted monoallylamines in a polar solvent in the presence of a radical initiator represented by the general formula: ##STR5## wherein R 1 , R 2 , R 3 and R 4 represent a same or different hydrocarbon groups, and R 1 and R 2 , and/or R 3 and R 4 may form a ring; R 5 and R 6 represent independently hydrogen or an alkyl group having 1-4 carbon atoms; and X represents an anion.
Claim 3
Dependent Claim
25 words
A process according to claim 1, wherein said radical initiator is one selected from the group consisting of 2,2'-azobis(2-N-allylamidiniumpropane)dichloride, 2,2'-azobis(2-N-allylamidiniumbutane)dichloride, 2,2'-azobis(2-N-allylamidinium(4-methyl)pentane)dichloride, 1,1'-azobis(1-N-allylamidiniumcyclohexane)dichloride, and 2,2'-azobis(2-N-methallylamidiniumpropane) dichloride.
Claim 4
Dependent Claim
31 words
A process according to claim 1, wherein the amount of said radical initiator is 0.05-10% by weight based on the weight of the inorganic acid salt of monoallylamine or N-substituted monoallylamines.
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) | 1991-06-07 | 1991-12-07 | 1992-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-06-07 | 1995-12-07 | 1996-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-06-07 | 1999-12-07 | 2000-06-07 | $7700.00 | Window Closed / Lapsed |