GB464808A - Improvements in the manufacture and production of shaped articles from polymerised vinyl carbazole - Google Patents
Improvements in the manufacture and production of shaped articles from polymerised vinyl carbazoleInfo
- Publication number
- GB464808A GB464808A GB2984235A GB2984235A GB464808A GB 464808 A GB464808 A GB 464808A GB 2984235 A GB2984235 A GB 2984235A GB 2984235 A GB2984235 A GB 2984235A GB 464808 A GB464808 A GB 464808A
- Authority
- GB
- United Kingdom
- Prior art keywords
- temperatures
- vinyl carbazole
- temperature
- comminuted
- mixtures
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
- B29C67/0003—Moulding articles between moving mould surfaces, e.g. turning surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2029/00—Use of polyvinylalcohols, polyvinylethers, polyvinylaldehydes, polyvinylketones or polyvinylketals or derivatives thereof as moulding material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0037—Other properties
- B29K2995/005—Oriented
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
Articles are produced from polymerized vinyl carbazole or mixtures thereof by subjecting the material to a treatment by which the molecules are orientated in a definite direction, comminuting the resulting material and pressing it at a temperature at which no complete fusion takes place. The mixtures may comprise vinyl carbazole and styrene, butadiene, or vinyl ethers. In order to produce the desired orientation the material may be extruded at temperatures above 200 DEG C. in the form of bands, foils, rods, or tubes, or rolled between hot rollers and subjected to a tensile stress by a second pair of rollers running at a higher speed but at a lower temperature, or formed into thin plates or rods in an injection moulding machine at temperatures above 200 DEG C. the receiving mould being at a temperature between 50 and 200 DEG C. The substances thus produced are comminuted in cross-beater mills, crushers, &c., and the resultant fibrous mass is moulded at temperatures from 180 to 250 DEG C. Softening agents and fillers may be added or insertions of fabric, metal wires, mica leaves or asbestos masses. The fibrous mass may be tableted and preheated to about 225 DEG C. before the final moulding. According to the Provisional Specification the preliminarily formed sheets, instead of being comminuted, may be laid on one another with their molecules orientated in different directions and pressed at temperatures from 200 to 250 DEG C.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2984235A GB464808A (en) | 1935-10-29 | 1935-10-29 | Improvements in the manufacture and production of shaped articles from polymerised vinyl carbazole |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2984235A GB464808A (en) | 1935-10-29 | 1935-10-29 | Improvements in the manufacture and production of shaped articles from polymerised vinyl carbazole |
Publications (1)
Publication Number | Publication Date |
---|---|
GB464808A true GB464808A (en) | 1937-04-26 |
Family
ID=10298084
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2984235A Expired GB464808A (en) | 1935-10-29 | 1935-10-29 | Improvements in the manufacture and production of shaped articles from polymerised vinyl carbazole |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB464808A (en) |
-
1935
- 1935-10-29 GB GB2984235A patent/GB464808A/en not_active Expired
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