GB944217A - Improvements in and relating to polyacrylonitrile solutions - Google Patents
Improvements in and relating to polyacrylonitrile solutionsInfo
- Publication number
- GB944217A GB944217A GB21804/59A GB2180459A GB944217A GB 944217 A GB944217 A GB 944217A GB 21804/59 A GB21804/59 A GB 21804/59A GB 2180459 A GB2180459 A GB 2180459A GB 944217 A GB944217 A GB 944217A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acrylonitrile
- cuprous
- salt
- solution
- polymerization
- 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
- C08F220/00—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
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/42—Nitriles
- C08F220/44—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
- C08F2/12—Polymerisation in non-solvents
- C08F2/16—Aqueous medium
-
- 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
- C08F220/00—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
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/42—Nitriles
- C08F220/44—Acrylonitrile
- C08F220/46—Acrylonitrile with carboxylic acids, sulfonic acids or salts thereof
-
- 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
- C08F283/00—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
Abstract
In a modification of the process of the parent Specification acrylonitrile polymers containing at least 80% acrylonitrile are prepared by dissolving the acrylonitrile with or without other monomers such as styrene, methyl acrylate, itaconic acid, vinyl acetate or vinyl pyridine in a concentrated aqueous or acqueous/alcoholic solution of an inorganic thiocyanate and polymerizing the monomer or monomers in solution at a pH of 4 to 8 in the presence of a non-oxidising polymerization catalyst forming free radicals which is an azo compound and in the presence of a cuprous salt and a reducing agent which is inert to the azo compound under the polymerization conditions. The reducing agent may be thiourea dioxide and the cuprous salt may be added as such, e.g. cuprous thiocyanate, or as a cupric salt, e.g. copper sulphate. The effect of the cuprous salt is to reduce the molecular weight of the polymer produced. The azo catalyst may be azobis-isobutyronitrile and ammonia and sodium hydroxide may be added to the polymerization solution to adjust the pH value. Fibres may be spun from the polymer solutions and ribbons and films may also be produced. Specifications 824,361 and 864,096 are referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB21804/59A GB944217A (en) | 1955-09-16 | 1959-06-25 | Improvements in and relating to polyacrylonitrile solutions |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB357501X | 1955-09-16 | ||
| GB35058/56A GB824361A (en) | 1955-09-16 | 1956-11-16 | Improvements in and relating to polyacrylonitrile solutions |
| GB4389/58A GB864096A (en) | 1955-09-16 | 1958-02-11 | Improvements in and relating to polyacrylonitrile solutions |
| GB21804/59A GB944217A (en) | 1955-09-16 | 1959-06-25 | Improvements in and relating to polyacrylonitrile solutions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB944217A true GB944217A (en) | 1963-12-11 |
Family
ID=32475550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB21804/59A Expired GB944217A (en) | 1955-09-16 | 1959-06-25 | Improvements in and relating to polyacrylonitrile solutions |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB944217A (en) |
-
1959
- 1959-06-25 GB GB21804/59A patent/GB944217A/en not_active Expired
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