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US3609129A
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Method of polymerizing acrylonitrile in the presence of an alkali metal alcoholate of an {60 -hydroxyalkylamine
Assignee: Individual
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Filing: 1968-06-14
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Granted: 1971-09-28
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Expires: 1988-06-14
Abstract
Abstract Polyacrylonitrile is produced by polymerizing acrylonitrile in the presence of a novel catalyst at a temperature of -80* C. to 40* C. The catalyst is an alkali metal alcoholate of an Alpha hydroxyalkylamine.
Inventors
- 👤 Valentina Nikolaevna Krasulina
- 👤 Anna Valentinovna Novoselova
- 👤 Alexei Andreevich Korotkov
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:52
CPC Classifications
C; C08; C08F; C08F20/00; C08F20/02; C08F20/42; C08F20/44; C08F2/00; C08F2/36
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
20 words
A method according to claim 1, wherein the N-substituted amide of an organic acid is dimethyl formamide or dimethyl acetamide.
Claim 2
Dependent Claim
11 words
A method according to claim 1, wherein the solvent is dimethylformamide.
Claim 3
Independent Claim
91 words
A method of producing a copolymer of acrylonitrile and a vinyl monomer comprising copolymerizing acrylonitrile and a vinyl monomer at a temperature between -80* C. and +40* C. in the presence of an effective amount of a catalyst, said copolymerizing being effected in a solvent for the copolymer which is inert to the catalyst, the catalyst being a solution of a compound having the formula wherein R is alkyl or aryl; R'' is alkyl, aryl or hydrogen and M is an alkali metal in an N-substituted amide of an organic acid.
Claim 4
Dependent Claim
20 words
A method according to claim 4, wherein the N-substituted amide of an organic acid is dimethyl formamide or dimethyl acetamide.
Claim 5
Dependent Claim
11 words
A method according to claim 4, wherein the solvent is dimethylformamide.
References Cited (Backward Citations)
US2817649A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |