GB300719A - Improvements in the production of raw rubber from rubber latex - Google Patents
Improvements in the production of raw rubber from rubber latexInfo
- Publication number
- GB300719A GB300719A GB2259527A GB2259527A GB300719A GB 300719 A GB300719 A GB 300719A GB 2259527 A GB2259527 A GB 2259527A GB 2259527 A GB2259527 A GB 2259527A GB 300719 A GB300719 A GB 300719A
- Authority
- GB
- United Kingdom
- Prior art keywords
- latex
- rubber
- coagulation
- ion concentration
- properties
- 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
- C08C1/14—Coagulation
- C08C1/15—Coagulation characterised by the coagulants used
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)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
Abstract
300,719. Johnson, J. Y., (I. G. Farbenindustrie Akt.-Ges,). Aug. 27, 1927. Latex, coagulating.-Rubber is coagulated from latex by proteases in the presence of additional substances facilitating the reaction or improving the properties of the rubber, such as hydrocyanic acid, hydrogen sulphide or saline mixtures possessing buffer properties. Suitable proteases are those contained in succus caricae papayae. The properties of the rubber can be improved in a controllable manner by imparting to the latex such a hydrogen-ion concentration that the coagulation is accelerated or retarded thereby. In an example, air is passed through latex stabilized with ammonia until a hydrogen-ion concentration of pH = 8 is attained : 100 c.c. of a 2 per cent solution of succus caricae papayae are added to 5 litres of the latex: after 20 hours a dense coagulated product separates out. If hydrocyanic acid is added the time of coagulation is reduced to 7 hours. With a higher ion concentration the time of coagulation is shorter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2259527A GB300719A (en) | 1927-08-27 | 1927-08-27 | Improvements in the production of raw rubber from rubber latex |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2259527A GB300719A (en) | 1927-08-27 | 1927-08-27 | Improvements in the production of raw rubber from rubber latex |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB300719A true GB300719A (en) | 1928-11-22 |
Family
ID=10181983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2259527A Expired GB300719A (en) | 1927-08-27 | 1927-08-27 | Improvements in the production of raw rubber from rubber latex |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB300719A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004029148A1 (en) * | 2002-09-24 | 2004-04-08 | Balai Penelitian Sembawa | The use of liquid smoke for natural rubber processing |
-
1927
- 1927-08-27 GB GB2259527A patent/GB300719A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004029148A1 (en) * | 2002-09-24 | 2004-04-08 | Balai Penelitian Sembawa | The use of liquid smoke for natural rubber processing |
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