GB609940A - Improvements in or relating to copolymers of vinyl chloride - Google Patents
Improvements in or relating to copolymers of vinyl chlorideInfo
- Publication number
- GB609940A GB609940A GB929046A GB929046A GB609940A GB 609940 A GB609940 A GB 609940A GB 929046 A GB929046 A GB 929046A GB 929046 A GB929046 A GB 929046A GB 609940 A GB609940 A GB 609940A
- Authority
- GB
- United Kingdom
- Prior art keywords
- vinyl chloride
- alcohols
- copolymers
- salts
- added
- 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
- C08F214/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen
- C08F214/02—Monomers containing chlorine
- C08F214/04—Monomers containing two carbon atoms
- C08F214/06—Vinyl chloride
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)
Abstract
Copolymers of vinyl chloride and a diester of citraconic or mesaconic acid are prepared by subjecting the monomers, containing more than 50 per cent by weight of vinyl chloride, to the action of heat and/or a polymerisation catalyst and/or actinic light. A third component, e.g. vinylidene chloride or acrylonitrile may be present. Suitable esters are those of lower alkyl alcohols and of cyclic alcohols, e.g. cyclohexyl or benzyl alcohol. The process may be effected in a mutual solvent such as methanol or in aqueous emulsion having a pH between 5 and 8.5. Specified emulsifying agents include gelatine and a mixture of the sodium salts of sulphated cetyl or stearyl alcohols and the free alcohols. Suitable catalysts are per-salts or organic peroxides to which may be added reducing agents such as ferrous sulphate or sodium sulphite. The copolymers may be precipitated by an electrolyte, e.g. aluminium sulphate. Only a part of the vinyl chloride, which copolymerises at a faster rate than the diesters, need be present initially and the rest then added at intervals during the process. Temperatures of between 30 DEG and 50 DEG C. are preferred and the products can be pressed into clear, pliable sheets without the aid of plasticisers. Specification 497,175 and U.S.A. Specification 1,945,307 are referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB929046A GB609940A (en) | 1946-03-26 | 1946-03-26 | Improvements in or relating to copolymers of vinyl chloride |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB929046A GB609940A (en) | 1946-03-26 | 1946-03-26 | Improvements in or relating to copolymers of vinyl chloride |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB609940A true GB609940A (en) | 1948-10-08 |
Family
ID=9869133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB929046A Expired GB609940A (en) | 1946-03-26 | 1946-03-26 | Improvements in or relating to copolymers of vinyl chloride |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB609940A (en) |
-
1946
- 1946-03-26 GB GB929046A patent/GB609940A/en not_active Expired
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