GB566144A - Improvements in and relating to the production of cast films of polyvinyl alcohol - Google Patents
Improvements in and relating to the production of cast films of polyvinyl alcoholInfo
- Publication number
- GB566144A GB566144A GB3300/43A GB330043A GB566144A GB 566144 A GB566144 A GB 566144A GB 3300/43 A GB3300/43 A GB 3300/43A GB 330043 A GB330043 A GB 330043A GB 566144 A GB566144 A GB 566144A
- Authority
- GB
- United Kingdom
- Prior art keywords
- carbon atoms
- agents
- stripping
- alkali metal
- polyvinyl alcohol
- 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
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or 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; Compositions of derivatives of such polymers
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Moulding By Coating Moulds (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
Abstract
Dry cast sheets or films of a water-soluble polyvinyl alcohol, including the products of incomplete saponification of polyvinyl esters, and polyvinyl alcohols containing acetal groups, capable of being easily stripped from the casting wheel in an undeformed or unmarred condition, are produced by incorporating into the casting solution a stripping agent of the following class: <FORM:0566144/IV/1> A water-soluble ester of a sulphonium acid salt of an aliphatic dibasic acid in which X is a bivalent radical of not more than 8 carbon atoms, Y and Z are alike or different, and are alkyl and aryl radicals of not more than 18 carbon atoms, and M is an alkali metal or ammonium radical. The sum of the carbon atoms in the radicals X, Y and Z is not less than 11 and not greater than 32. The central residue may be that of malonic, succinic, glutanic, adipic, subaric, azelaic and sebacic acids. The stripping agent may be used alone or in combination with others of the type, or with other known stripping agents, e.g. higher straight chain fatty alcohol alkali metal sulphates and alkyl naphthalene sodium sulphonates. Softening or plasticising agents may be added, e.g. glycol, hexaethylene glycol, glycerol, formamide acetamide, ethanol formamide, ethanol acetamide. Examples are given employing the di-octyl, the di-hexyl and the di-amyl ester of the sodium salt of sulphosuccinic acid, as the stripping agents.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US566144XA | 1942-02-28 | 1942-02-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB566144A true GB566144A (en) | 1944-12-15 |
Family
ID=22005571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3300/43A Expired GB566144A (en) | 1942-02-28 | 1943-03-01 | Improvements in and relating to the production of cast films of polyvinyl alcohol |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB566144A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3225128A (en) * | 1958-08-12 | 1965-12-21 | Kurashiki Rayon Co | Method of forming polyvinyl alcohol film |
-
1943
- 1943-03-01 GB GB3300/43A patent/GB566144A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3225128A (en) * | 1958-08-12 | 1965-12-21 | Kurashiki Rayon Co | Method of forming polyvinyl alcohol film |
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