GB593097A - Improvements in and relating to poly-n-vinyl carbazole products - Google Patents
Improvements in and relating to poly-n-vinyl carbazole productsInfo
- Publication number
- GB593097A GB593097A GB12242/45A GB1224245A GB593097A GB 593097 A GB593097 A GB 593097A GB 12242/45 A GB12242/45 A GB 12242/45A GB 1224245 A GB1224245 A GB 1224245A GB 593097 A GB593097 A GB 593097A
- Authority
- GB
- United Kingdom
- Prior art keywords
- vinyl carbazole
- poly
- trichlorethylene
- polymer
- per cent
- 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
- C08L39/00—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 single or double bond to nitrogen or by a heterocyclic ring containing nitrogen; Compositions of derivatives of such polymers
- C08L39/04—Homopolymers or copolymers of monomers containing heterocyclic rings having nitrogen as ring member
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)
- Organic Insulating Materials (AREA)
Abstract
Improved polymers of N-vinyl carbazole are produced by adding to a solution of commercial poly N-vinyl carbazole in benzene or trichlorethylene sufficient methyl alcohol to precipitate a polymer 85 per cent by weight of which has a relative viscosity in 2 per cent benzene solution of not less than 4 and no part of which has a viscosity of less than 3.25. Preferably, the polymer is prepared by polymerization in trichlorethylene at a temperature not above 0 DEG C. and in the presence of a polymerization catalyst, e.g. a compound of boron fluoride and diethyl ether, and the solution of polymer is diluted to 5 per cent by addition of trichlorethylene before addition of methyl alcohol. The poly N-vinyl carbazole produced is suitable for the manufacture of films and sheet materials adapted for use as spacing and dielectric in electric capacitors.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US593097XA | 1944-05-15 | 1944-05-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB593097A true GB593097A (en) | 1947-10-08 |
Family
ID=22022160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB12242/45A Expired GB593097A (en) | 1944-05-15 | 1945-05-15 | Improvements in and relating to poly-n-vinyl carbazole products |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB593097A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1089024B (en) * | 1955-06-07 | 1960-09-15 | Siemens Ag | Process for the production of thin insulating foils |
-
1945
- 1945-05-15 GB GB12242/45A patent/GB593097A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1089024B (en) * | 1955-06-07 | 1960-09-15 | Siemens Ag | Process for the production of thin insulating foils |
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