MY148315A - Improvements in or relating to the preparation of latex concentrate by centrifugation, creaming or evaporation - Google Patents

Improvements in or relating to the preparation of latex concentrate by centrifugation, creaming or evaporation

Info

Publication number
MY148315A
MY148315A MYPI20033448A MY148315A MY 148315 A MY148315 A MY 148315A MY PI20033448 A MYPI20033448 A MY PI20033448A MY 148315 A MY148315 A MY 148315A
Authority
MY
Malaysia
Prior art keywords
latex
latex concentrate
concentrate
reduction
creaming
Prior art date
Application number
Inventor
Krishnan Namboodiripad
Tan Sri Dr Balachandra Chakkingal Sekhar
Original Assignee
Sekhar B C Sdn Bhd
Rk Latex P Ltd
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 Sekhar B C Sdn Bhd, Rk Latex P Ltd filed Critical Sekhar B C Sdn Bhd
Priority to MYPI20033448 priority Critical patent/MY148315A/en
Priority to PCT/SG2004/000031 priority patent/WO2005023875A1/en
Publication of MY148315A publication Critical patent/MY148315A/en

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
    • C08C1/04—Purifying; Deproteinising
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08C—TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS
    • C08C4/00—Treatment of rubber before vulcanisation, not provided for in groups C08C1/00 - C08C3/02

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)
  • Enzymes And Modification Thereof (AREA)

Abstract

A METHOD OF REDUCING THIXOTROPY OF AMMONIATED LATEX CONCENTRATES, BY THE ADDITION OF PROTEOLYTIC ENZYMES UNDER ALKALINE CONDITIONS TO THE LATEX CONCENTRATE. THE METHOD IS EFFECTIVE FOR BOTH HIGH AND LOW AMMONIA LATEX CONCENTRATES. THE REDUCTION OF VISCOSITY INCLUDES THE REDUCTION OF THE BROOKFIELD VISCOSITY OF THE LATEX CONCENTRATE. THE PROTEOLYTIC ENZYME USED IS PEPSIN, INCLUDING PAPAIN. PREFERABLY, THE CONCENTRATION OF PROTEOLYTIC ENZYME USED IS IN THE RANGE OF THE FROM ABOUT 0.005 TO 0.20% BASED ON DRY RUBBER CONTENT (DRC). POTASSIUM HYDROXIDE (KOH) MAY PREFERABLY BE USED TO EFFECTIVELY REMEDY ANY ADVERSE EFFECTS OF THE ENZYME ON THE LATEX CONCENTRATE'S PROPERTIES, INCLUDING CHEMICAL STABILITY TIME (CST), MECHANICAL STABILITY TIME (MST), VOLATILE FATTY ACID (VFA) NUMBER , AND FILTERABILITY
MYPI20033448 2003-09-11 2003-09-11 Improvements in or relating to the preparation of latex concentrate by centrifugation, creaming or evaporation MY148315A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
MYPI20033448 MY148315A (en) 2003-09-11 2003-09-11 Improvements in or relating to the preparation of latex concentrate by centrifugation, creaming or evaporation
PCT/SG2004/000031 WO2005023875A1 (en) 2003-09-11 2004-02-03 Improvements in or relating to the preparation of latex concentrate by centrifugation, creaming or evaporation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
MYPI20033448 MY148315A (en) 2003-09-11 2003-09-11 Improvements in or relating to the preparation of latex concentrate by centrifugation, creaming or evaporation

Publications (1)

Publication Number Publication Date
MY148315A true MY148315A (en) 2013-03-29

Family

ID=34270788

Family Applications (1)

Application Number Title Priority Date Filing Date
MYPI20033448 MY148315A (en) 2003-09-11 2003-09-11 Improvements in or relating to the preparation of latex concentrate by centrifugation, creaming or evaporation

Country Status (2)

Country Link
MY (1) MY148315A (en)
WO (1) WO2005023875A1 (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1366934A (en) * 1971-08-10 1974-09-18 Malaysia Rubber Res Inst Treatment of rubber
GB2098222B (en) * 1981-05-07 1984-08-15 Malaysia Rubber Res Inst Processing of hevea latex
MY137284A (en) * 1992-08-05 2009-01-30 Kao Corp Deproteinized natural rubber and process for producing the same
KR100360903B1 (en) * 1995-03-14 2003-02-11 후지 라텍스 가부시키가이샤 Process for preparing deproteinized natural rubber latex molded article and deproteinization treating agent for natural rubber latex
AU781386B2 (en) * 2000-11-08 2005-05-19 Kao Corporation Method of preparing low allergic natural rubber latex and deproteinized natural rubber latex, and low allergic natural rubber and deproteinized natural rubber

Also Published As

Publication number Publication date
WO2005023875A1 (en) 2005-03-17

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