GB723315A - Improvements in and relating to the production of dried products from latex - Google Patents
Improvements in and relating to the production of dried products from latexInfo
- Publication number
- GB723315A GB723315A GB1286651A GB1286651A GB723315A GB 723315 A GB723315 A GB 723315A GB 1286651 A GB1286651 A GB 1286651A GB 1286651 A GB1286651 A GB 1286651A GB 723315 A GB723315 A GB 723315A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acid
- particles
- latex
- added
- charge density
- 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
- C08C—TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS
- C08C1/00—Treatment of rubber latex
- C08C1/02—Chemical or physical treatment of rubber latex before or during concentration
- C08C1/075—Concentrating
- C08C1/12—Concentrating by evaporation
Landscapes
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (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)
Abstract
A process for obtaining dried products from the latex of a neoprene or butadiene-acrylonitrile or butadiene-styrene synthetic rubber comprises changing the isoelectric point of the particles in the discontinuous phase by adding a surface active agent and then increasing the charge density of the particles by adding an acid salt or the like ionizable compound, and drying the mixture. The surface active agent may be an anionic or a cationic wetting agent such as cetyl pyridinium chloride. The charge density may be increased by an acid such as lignin sulphonic acid or a salt such as ammonium chloride or ferrocyanide. Alternatively an alkali may be added after an anionic wetting agent. The surface of the rubber particles may be rendered less sticky by the addition of quinones and ferric sulphate, sodium perborate and mercuric chloride, or hexamethylene tetramine, thiolacetic acid or polyethylene glycol. Fillers such as carbon black, zinc oxide and infusorial earth may be added in emulsion form or directly, but independently, into the drying chamber while the latex is dried.ALSO:A process for obtaining dried products from natural or synthetic rubber latex comprises changing the isoelectric point of the particles in the discontinuous phase by adding a surface active agent and then increasing the charge density of the particles by adding an acid salt or the like ionizable compound, and drying the mixture. The surface active agent may be an anionic or a cationic wetting agent such as cetyl pyridinium chloride. The charge density may be increased by an acid such as lignin sulphonic acid or a salt such as ammonium chloride or ferrocyanide. Alternatively, an alkali may be added after an anionic wetting agent. The surface of the rubber particles may be rendered less sticky by the addition of quinones and ferric sulphate, sodium perborate and mercuric chloride, or hexamethylene tetramine, thiolacetic acid or polyethylene glycol. Fillers such as carbon black, zinc oxide and infusorial earth may be added in emulsion form or directly, but independently, into the drying chamber while the latex is dried.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1286651A GB723315A (en) | 1952-05-28 | 1952-05-28 | Improvements in and relating to the production of dried products from latex |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1286651A GB723315A (en) | 1952-05-28 | 1952-05-28 | Improvements in and relating to the production of dried products from latex |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB723315A true GB723315A (en) | 1955-02-09 |
Family
ID=10012577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1286651A Expired GB723315A (en) | 1952-05-28 | 1952-05-28 | Improvements in and relating to the production of dried products from latex |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB723315A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3985704A (en) | 1975-06-19 | 1976-10-12 | Rohm And Haas Company | Methacrylate-butadiene-styrene graft polymers and process for their production |
| US3985703A (en) | 1975-06-24 | 1976-10-12 | Rohm And Haas Company | Process for manufacture of acrylic core/shell polymers |
-
1952
- 1952-05-28 GB GB1286651A patent/GB723315A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3985704A (en) | 1975-06-19 | 1976-10-12 | Rohm And Haas Company | Methacrylate-butadiene-styrene graft polymers and process for their production |
| US3985703A (en) | 1975-06-24 | 1976-10-12 | Rohm And Haas Company | Process for manufacture of acrylic core/shell polymers |
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