GB481871A - Improvements relating to the manufacture of porous articles from natural or synthetic rubber - Google Patents
Improvements relating to the manufacture of porous articles from natural or synthetic rubberInfo
- Publication number
- GB481871A GB481871A GB2229336A GB2229336A GB481871A GB 481871 A GB481871 A GB 481871A GB 2229336 A GB2229336 A GB 2229336A GB 2229336 A GB2229336 A GB 2229336A GB 481871 A GB481871 A GB 481871A
- Authority
- GB
- United Kingdom
- Prior art keywords
- grains
- rubber
- substance
- milling
- synthetic rubber
- 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
-
- 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
- C08J2201/00—Foams characterised by the foaming process
- C08J2201/04—Foams characterised by the foaming process characterised by the elimination of a liquid or solid component, e.g. precipitation, leaching out, evaporation
- C08J2201/046—Elimination of a polymeric phase
-
- 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
- C08J2321/00—Characterised by the use of unspecified rubbers
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)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
Porous rubber having pores of controlled size is obtained by milling into a crude natural or synthetic rubber mix, e.g. derived from ethylene polysulphide, grains of a substance which is insoluble in cold water, convertible into a soluble substance by the action of heat, enzymes or a chemical reagent, and capable of resisting attrition on normally-spaced milling rolls, converting the grains during or after vulcanization into water-soluble form without permitting them to swell materially, and leaching the converted grains out of the rubber. Suitable grains are those of starch, albumen, meat fibrin, or a lime-casein reaction product. Battery separators and reinforced filter sheets may be made of the product.ALSO:Porous rubber having pores of controlled size is obtained by milling into a crude natural or synthetic rubber mix grains of a substance which is insoluble in cold water, convertible into a soluble substance by heat, enzymes or treatment with a chemical reagent, and is capable of resisting attrition on normally-spaced milling rolls, converting the grains during or after vulcanization into water-soluble form without permitting them to swell materially, and leaching the converted grains out of the rubber. Suitable grains are those of starch, albumen, meat fibrin or a lime-casein reaction product. Articles such as grooved battery separators and filter sheets having a perforated metallic reinforcement between two sheets of the rubber may be made by the process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2229336A GB481871A (en) | 1936-08-13 | 1936-08-13 | Improvements relating to the manufacture of porous articles from natural or synthetic rubber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2229336A GB481871A (en) | 1936-08-13 | 1936-08-13 | Improvements relating to the manufacture of porous articles from natural or synthetic rubber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB481871A true GB481871A (en) | 1938-03-14 |
Family
ID=10177031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2229336A Expired GB481871A (en) | 1936-08-13 | 1936-08-13 | Improvements relating to the manufacture of porous articles from natural or synthetic rubber |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB481871A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114378981A (en) * | 2021-12-14 | 2022-04-22 | 宁波坚锋新材料有限公司 | Water-carrying porous friction medium and method for cleaning waste plastic |
-
1936
- 1936-08-13 GB GB2229336A patent/GB481871A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114378981A (en) * | 2021-12-14 | 2022-04-22 | 宁波坚锋新材料有限公司 | Water-carrying porous friction medium and method for cleaning waste plastic |
| CN114378981B (en) * | 2021-12-14 | 2023-08-22 | 宁波坚锋新材料有限公司 | Water-carrying porous friction medium and method for cleaning waste plastics |
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