IT1179078B - Prepn. of high mol.wt. acrylonitrile polymers - Google Patents
Prepn. of high mol.wt. acrylonitrile polymersInfo
- Publication number
- IT1179078B IT1179078B IT67852/84A IT6785284A IT1179078B IT 1179078 B IT1179078 B IT 1179078B IT 67852/84 A IT67852/84 A IT 67852/84A IT 6785284 A IT6785284 A IT 6785284A IT 1179078 B IT1179078 B IT 1179078B
- Authority
- IT
- Italy
- Prior art keywords
- pref
- prepn
- soluble
- monomer
- mol
- Prior art date
Links
Landscapes
- Polymerisation Methods In General (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
Prepn. of acrylonitrile (AN) polymers of high mol. wt. (wt. ave. mol. wt. 400,000 or more, pref. 1000000) wherein AN-monomer alone or a mixt. of AN-monomer (85 wt.% or more) with ethylenically unsatd. cpds. suspension (co)polymerised in an aq. medium contg. a water-soluble high molecular substance, using an oil-soluble radical initiator, so that at least 9 wt.% of monomer component is always present in the polymer-isation system throughout the polymerisation. Comonomers are vinyl chloride, acrylic acid, methyl acrylate, etc. Pref. water-soluble high molecular substances are polyvinyl alcohols, more pref. partially saponified polyvinyl alcohols having a saponification degree of 85-95%. Pref. oil-soluble radical initiators are azo-cpds. such as 2,2'-azobisisobutyronitrile or 2,2'-azobis(2,4 -dimethyl-valeronitrile). Polymerisation is pref. carried out while stirring at a power of 1-10 KWH/cu.m.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT67852/84A IT1179078B (en) | 1984-08-27 | 1984-08-27 | Prepn. of high mol.wt. acrylonitrile polymers |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT67852/84A IT1179078B (en) | 1984-08-27 | 1984-08-27 | Prepn. of high mol.wt. acrylonitrile polymers |
Publications (3)
Publication Number | Publication Date |
---|---|
IT8467852A0 IT8467852A0 (en) | 1984-08-27 |
IT8467852A1 IT8467852A1 (en) | 1986-02-27 |
IT1179078B true IT1179078B (en) | 1987-09-16 |
Family
ID=11305786
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT67852/84A IT1179078B (en) | 1984-08-27 | 1984-08-27 | Prepn. of high mol.wt. acrylonitrile polymers |
Country Status (1)
Country | Link |
---|---|
IT (1) | IT1179078B (en) |
-
1984
- 1984-08-27 IT IT67852/84A patent/IT1179078B/en active
Also Published As
Publication number | Publication date |
---|---|
IT8467852A0 (en) | 1984-08-27 |
IT8467852A1 (en) | 1986-02-27 |
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Legal Events
Date | Code | Title | Description |
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TA | Fee payment date (situation as of event date), data collected since 19931001 |
Effective date: 19950831 |