GB1177801A - Process for the Industrial production of Spinnable Acrylonitrile-Based Polymers - Google Patents
Process for the Industrial production of Spinnable Acrylonitrile-Based PolymersInfo
- Publication number
- GB1177801A GB1177801A GB2586/67A GB258667A GB1177801A GB 1177801 A GB1177801 A GB 1177801A GB 2586/67 A GB2586/67 A GB 2586/67A GB 258667 A GB258667 A GB 258667A GB 1177801 A GB1177801 A GB 1177801A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acrylonitrile
- dimethylformamide
- polymerization
- solutions
- peroxide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F20/00—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride, ester, amide, imide or nitrile thereof
- C08F20/02—Monocarboxylic acids having less than ten carbon atoms, Derivatives thereof
- C08F20/42—Nitriles
- C08F20/44—Acrylonitrile
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/36—Polymerisation in solid state
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Artificial Filaments (AREA)
- Polymerisation Methods In General (AREA)
Abstract
1,177,801. Preparation of acrylonitrile copolymer spinning solutions. SNIA VISCOSA SOC. NAZIONALE INDUSTRIA APPLICAZIONI VISCOSA S.p.A. 18 Jan., 1967 [7 Feb., 1966], No. 2586/67. Heading C3P. A process for the industrial production of <SP>n</SP> spinnable solutions of copolymers of at least 85% by weight acrylonitrile and up to 15% by weight comonomer(s) comprises copolymerizing acrylonitrile and the eomonomer(s) dis. solved in dimethylformamide in the presence of a catalyst in one or more reactors at reduced pressure and at a progressively increased temperature, the reaction mixture being first brought to the boiling point, and then being maintained at the boiling point by controlling the pressure according to a programmed sequence, and by controlling the composition of the reaction mass by the programmed addition of further dimethylformamide and catalyst, thereby effecting polymerization under reflux conditions, and after polymerization the reacted material is transferred from the reactors) to a separate environment, wherein the said reacted material is distilled for virtually complete removal of unreacted monomer and of dimethylformamide which is in excess of that required as solvent for the spinning solution. Suitable comonomers include methyl methacrylate and sodium allylsulphonate. The polymerization is generally carried out to complete conversion of the comonomer(s) and to a preselected partial conversion of the acrylonitrile. Catalysts specified are lauryl peroxide, benzoyl peroxide, allyl peroxide and azo isobutyronitrile. The solutions obtained by the process are used for the production of fibres and yarns. An installation for carrying out the process is described.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT261666 | 1966-02-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1177801A true GB1177801A (en) | 1970-01-14 |
Family
ID=11103165
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2586/67A Expired GB1177801A (en) | 1966-02-07 | 1967-01-18 | Process for the Industrial production of Spinnable Acrylonitrile-Based Polymers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1177801A (en) |
-
1967
- 1967-01-18 GB GB2586/67A patent/GB1177801A/en not_active Expired
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