US4540760A
Expired / Lapsed
US
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Process for producing polymers of monoallylamine
Assignee: Nitto Boseki Co Ltd
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Filing: 1984-11-07
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Granted: 1985-09-10
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Expires: 2004-11-07
Abstract
Abstract In a process for producing a polymer of monoallylamine comprising polymerizing monoallylamine, the polymerization is carried out using as a monomer inorganic acid salts (e.g., hydrochloride, sulfate, etc.) of monoallylamine in the presence of an azo type radical initiator. By the process, polymers of monoallylamine having a high degree of polymerization can be obtained in high yield.
Inventors
- 👤 Susumu Harada
- 👤 Kiyoshi Shimizu
- 👤 Hajime Serizawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 06:52
CPC Classifications
C; C08; C08F; C08F26/00; C08F26/02
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
106 words
A process for producing a polymer of monoallylamine or a salt thereof which comprises polymerizing an inorganic acid salt of monoallylamine in a polar solvent in the presence of an azo type initiator selected from azo compounds represented by formulae (III), (IV), (VII) and (VIII): ##STR7## wherein R 1 , R 2 , R 3 and R 4 each represents, which may be the same or different, a hydrocarbon group; R 1 and R 2 or/and R 3 and R 4 may be combined to complete a ring together with the carbon atom attached thereto; and n represents 0 or an integer of 1 to 4.
Claim 2
Dependent Claim
106 words
A process for producing a polymer of monoallylamine or a salt thereof which comprises polymerizing an inorganic acid salt of monoallylamine in a polar solvent in the presence of an azo type initiator selected from azo compounds represented by formulae (III), (IV), (VII) and (VIII): ##STR7## wherein R 1 , R 2 , R 3 and R 4 each represents, which may be the same or different, a hydrocarbon group; R 1 and R 2 or/and R 3 and R 4 may be combined to complete a ring together with the carbon atom attached thereto; and n represents 0 or an integer of 1 to 4.
Claim 3
Dependent Claim
45 words
The process according to claim 1 wherein said hydrocarbon group is selected from a group consisting of a straight or branched alkyl group having 1 to 4 carbon atoms, a cycloalkyl group having 3 to 6 carbon atoms, a phenyl group and a benzyl group.
Claim 4
Dependent Claim
23 words
The process according to claim 1 wherein said ring is selected from a member consisting of a cyclopentane ring and a cyclohexane ring.
Claim 5
Dependent Claim
21 words
The process according to claim 1 wherein said alkyl group is straight or branched and has 1 to 4 carbon atoms.
Claim 6
Dependent Claim
33 words
The process according to claim 1 wherein said azo type intiator is used in an amount of 0.1 to 10 wt. % based on the weight of said inorganic acid salt of monoallylamine.
Claim 7
Dependent Claim
26 words
The process according to claim 5 wherein said azo type initiator is used in an amount of 1 to 6 wt. % on the same basis.
Claim 8
Dependent Claim
12 words
The process according to claim 1 wherein said polar solvent is water.
Claim 9
Dependent Claim
22 words
The process according to claim 1 wherein said polar solvent is an inorganic acid, an organic acid or an aqueous solution thereof.
Claim 10
Dependent Claim
38 words
The process according to claim 8 wherein said inorganic acid is selected from hydrochloric acid, sulfuric acid, phosphoric acid and polyphosphoric acid and said organic acid is selected from formic acid, acetic acid, propionic acid and lactic acid.
Claim 11
Dependent Claim
19 words
The process according to claim 1 wherein said polar solvent is selected from an alcohol, dimethylsulfoxide, dimethylformamide and formamide.
Claim 12
Dependent Claim
19 words
The process according to claim 1 wherein said polar solvent is an aqueous solution of an inorganic acid salt.
Claim 13
Dependent Claim
21 words
The process according to claim 11 wherein said inorganic acid salt is selected from zinc chloride, calcium chloride and magnesium chloride.
Claim 14
Dependent Claim
17 words
The process according to claim 1 wherein said azo type initiator is used singly or in combination.
Claim 15
Dependent Claim
27 words
The process according to claim 1 wherein said combination is the azo type initiator represented by formula (VII) and the azo type initiator represented by formula (VIII).
Claim 16
Dependent Claim
23 words
The process according to claim 1 wherein said inorganic acid salt of monoallylamine is selected from hydrochloride, sulfate, sulfite and phosphate of monoallylamine.
Claim 17
Dependent Claim
35 words
The process according to claim 1 wherein said polymer of the inorganic acid salt of monoallylamine may be converted into said polymer of monoallylamine or into the polymer of an organic acid salt of monoallylamine.
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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) | 1988-09-09 | 1989-03-11 | 1989-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-09-09 | 1993-03-11 | 1993-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-09-09 | 1997-03-11 | 1997-09-10 | $7700.00 | Window Closed / Lapsed |