GB612443A - Improvement in the treatment of natural rubber latices - Google Patents

Improvement in the treatment of natural rubber latices

Info

Publication number
GB612443A
GB612443A GB1242446A GB1242446A GB612443A GB 612443 A GB612443 A GB 612443A GB 1242446 A GB1242446 A GB 1242446A GB 1242446 A GB1242446 A GB 1242446A GB 612443 A GB612443 A GB 612443A
Authority
GB
United Kingdom
Prior art keywords
natural rubber
improvement
treatment
rubber latices
coagulating
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
GB1242446A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB1242446A priority Critical patent/GB612443A/en
Publication of GB612443A publication Critical patent/GB612443A/en
Priority to MY5400035A priority patent/MY5400035A/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
    • C08C1/02—Chemical or physical treatment of rubber latex before or during concentration
    • C08C1/075—Concentrating
    • C08C1/08—Concentrating with the aid of creaming agents

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

Natural rubber latex is separated into fractions by adding an alkaline substance such as ammonia to bring the Ph to 6.0 to 8.5, then adding a solution of a salt with a monovalent cation and allowing the mixture to stand, and then separating the two or more layers which are formed. The optimum Ph is 7.5 and preferably sodium chloride at a strength of 0.2 to 0.4 gm. mols per litre is used. Rubber made by coagulating the lowest or "white" layer has a low water absorption and high plasticity. Specifications 413,185 and 586,830 are referred to.
GB1242446A 1946-04-24 1946-04-24 Improvement in the treatment of natural rubber latices Expired GB612443A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB1242446A GB612443A (en) 1946-04-24 1946-04-24 Improvement in the treatment of natural rubber latices
MY5400035A MY5400035A (en) 1946-04-24 1954-12-30 Improvement in the treatment of natural rubber latices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1242446A GB612443A (en) 1946-04-24 1946-04-24 Improvement in the treatment of natural rubber latices

Publications (1)

Publication Number Publication Date
GB612443A true GB612443A (en) 1948-11-12

Family

ID=10004347

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1242446A Expired GB612443A (en) 1946-04-24 1946-04-24 Improvement in the treatment of natural rubber latices

Country Status (2)

Country Link
GB (1) GB612443A (en)
MY (1) MY5400035A (en)

Also Published As

Publication number Publication date
MY5400035A (en) 1954-12-31

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