GB649646A - Improvements in and relating to the production of porous bodies - Google Patents
Improvements in and relating to the production of porous bodiesInfo
- Publication number
- GB649646A GB649646A GB3242/48A GB324248A GB649646A GB 649646 A GB649646 A GB 649646A GB 3242/48 A GB3242/48 A GB 3242/48A GB 324248 A GB324248 A GB 324248A GB 649646 A GB649646 A GB 649646A
- Authority
- GB
- United Kingdom
- Prior art keywords
- salt
- toluol
- benzol
- petrol
- accepted
- 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
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/26—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof by elimination of a solid phase from a macromolecular composition or article, e.g. leaching out
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
Soft, elastic, porous bodies are made by mixing polyvinyl chloride and a softening-agent, e.g. dibutyl phthalate, dioctyl phthalate, dibutyl sebacate, or tricresyl phosphate, with at least twice the volume of these substances of a soluble granular salt, e.g. sodium chloride, the smallest particle of which is 0.5 mm. or more in size and the largest particle is not more than 5.0 mm., the mix being shaped and set by heating, and the salt being then removed by lixiviation. The polyvinyl chloride should be of such a consistency that the salt is not crushed during mixing. Polymerizable substances, e.g. methyl methacrylate, styrol or chloroprene, and catalysts, e.g. peroxides, aluminium chloride, or boron trifluoride may be added. The Specification as open to inspection under Sect. 91 comprises also the use of polystyrene, polyacrylates, polyallyl esters, polybutadiene and polychloroprene and solvents, e.g. benzol, toluol, petrol and carbon tetrachloride. This subject-matter does not appear in the Specification as accepted.ALSO:The Specification as open to inspection under Sect. 91 comprises the production of porous natural or artificial rubber by incorporating in a solution thereof in benzol, toluol, petrol, or carbon tetrachloride, a water-soluble salt such as sodium chloride which is insoluble in the rubber solvent, the size of the largest of the grains of the salt being less than 10, and preferably less than 5 times that of the smallest. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE649646X | 1947-02-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB649646A true GB649646A (en) | 1951-01-31 |
Family
ID=20314016
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3242/48A Expired GB649646A (en) | 1947-02-11 | 1948-02-04 | Improvements in and relating to the production of porous bodies |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB649646A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3375209A (en) * | 1964-05-25 | 1968-03-26 | Charles R. Kemper | Porous film and method of making |
US3379658A (en) * | 1964-05-25 | 1968-04-23 | Charles R. Kemper | Porous film and method of making |
-
1948
- 1948-02-04 GB GB3242/48A patent/GB649646A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3375209A (en) * | 1964-05-25 | 1968-03-26 | Charles R. Kemper | Porous film and method of making |
US3379658A (en) * | 1964-05-25 | 1968-04-23 | Charles R. Kemper | Porous film and method of making |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB649646A (en) | Improvements in and relating to the production of porous bodies | |
GB565022A (en) | Improvements in micro-porous separators or diaphragms | |
GB972626A (en) | Process for the preparation of vulcanisable mixtures | |
ES413090A1 (en) | Isolating rubbers | |
CN208245425U (en) | A kind of solid waste treatment device | |
GB525656A (en) | Improvements in or relating to the concentration of dispersions or rubber or rubber-like substances | |
GB680226A (en) | Paste-forming vinyl chloride polymer compositions | |
Tuizi | Crustal movement in the eastern part of Tottori prefecture | |
JPS55149326A (en) | Stabilized hydrophobic polymer particle dispersion | |
ES273974A1 (en) | Natural and synthetic rubber latices | |
GB638893A (en) | Improvements in or relating to packing materials for glands and for similar purposes | |
AU130428B2 (en) | Improvements in or relating tothe production of granular vinyl ether polymeric materials | |
AU369346A (en) | Improvements in or relating tothe production of granular vinyl ether polymeric materials | |
AU132922B2 (en) | Improvements in and relating tothe manufacture of artificial aqueous dispersions of natural and synthetic rubbers rubber substitutes and rubberlike substances | |
GB640565A (en) | Improvements in carbon black | |
AU148887B2 (en) | Improvements in and relating tothe production of vinyl chloride polymer dispersions | |
AU144481B2 (en) | Improvements in or relating to granular smokeless propellant powders | |
AU137776B2 (en) | Improvements relating to bag loaders for wheat and like materials | |
GB1046796A (en) | Process for the productionof homogeneous mixtures of rubber and silicic acid | |
GB928993A (en) | Process for the suspension polymerisation of vinyl chloride | |
AU432146A (en) | Improvements in and relating tothe manufacture of artificial aqueous dispersions of natural and synthetic rubbers rubber substitutes and rubberlike substances | |
JPS51114449A (en) | A process for preparing rubber powders | |
JPS51114450A (en) | A process for preparing rubber powders | |
AU527946A (en) | Improvements in or relating tothe polymerisation of vinyl compounds | |
GB652254A (en) | Improvements in and relating to methods of making spongy rubber material |