GB309245A - Improvements in the treatment of rubber latex - Google Patents
Improvements in the treatment of rubber latexInfo
- Publication number
- GB309245A GB309245A GB212528A GB212528A GB309245A GB 309245 A GB309245 A GB 309245A GB 212528 A GB212528 A GB 212528A GB 212528 A GB212528 A GB 212528A GB 309245 A GB309245 A GB 309245A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acids
- latex
- acid
- per cent
- ccm
- 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
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)
- Treatment And Processing Of Natural Fur Or Leather (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
309,245. Johnson, J. Y., (I. G. Farbenindustrie Akt.-Ges.). Jan. 23, 1928. Latex, coagulating.-Latex is coagulated by the addition of an acid in the presence of an organic substance possessing soap-like properties which is not decomposed by acids into products insoluble in water, and which reduces the surface tension of the latex. Such substances comprise aromatic or hydroaromatic sulphonic acids which contain alkyl, cycloalkyl, aralkyl or aryl groups in the nucleus, or in other substituents such as amino or hyroxyl groups, true sulphonic acids of aliphatic tar or mineral oils, fatty acids, naphthenic acids and the like, fat splitters, suiphonic acids which have tanning properties, such as those obtained by treating sulphonic acids of naphthalene with formaldehyde, Turkey red oils, or salts of these acids. Coagulation is rapid and complete, and is independent of the concentration of the acid. If an acid or substance producing a hydrogen ion concentration pH>-2 and preferably #-1 is used with these substances, a bulky irreversible jelly is formed with a small amount of limpid serum. Vulcanizing agents, accelerators, fillers, &c. may be added at any stage. Several examples are given, of which the following are typical : (1) 1 litre of 12 per cent latex is treated with 60 ccm. of a 5 per cent solution of Turkey red oil, after elimination of ammonia, and 140 ccm. of 12 per cent acetic acid; rubber coagulates at once quantitatively. (2) 1 litre of latex is introduced into 7 per cent. hydrochloric acid with stirring, to obtain a pH value of 0.6-0.8; 15 ccm. of a 5 per cent solution of the sodium salt of isopropyl naphthalenesulphonic acid are added and a jelly forms.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB212528A GB309245A (en) | 1928-01-23 | 1928-01-23 | Improvements in the treatment of rubber latex |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB212528A GB309245A (en) | 1928-01-23 | 1928-01-23 | Improvements in the treatment of rubber latex |
Publications (1)
Publication Number | Publication Date |
---|---|
GB309245A true GB309245A (en) | 1929-04-11 |
Family
ID=9734029
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB212528A Expired GB309245A (en) | 1928-01-23 | 1928-01-23 | Improvements in the treatment of rubber latex |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB309245A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0624601A1 (en) * | 1993-05-13 | 1994-11-17 | Kao Corporation | Process for producing raw rubber |
-
1928
- 1928-01-23 GB GB212528A patent/GB309245A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0624601A1 (en) * | 1993-05-13 | 1994-11-17 | Kao Corporation | Process for producing raw rubber |
US5585459A (en) * | 1993-05-13 | 1996-12-17 | Kao Corporation | Process for producing raw rubber |
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