GB300719A - Improvements in the production of raw rubber from rubber latex - Google Patents

Improvements in the production of raw rubber from rubber latex

Info

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
Application number
GB2259527A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Priority to GB2259527A priority Critical patent/GB300719A/en
Publication of GB300719A publication Critical patent/GB300719A/en
Expired legal-status Critical Current

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

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.
GB2259527A 1927-08-27 1927-08-27 Improvements in the production of raw rubber from rubber latex Expired GB300719A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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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