FR3114591B1 - Process for treating natural rubber - Google Patents

Process for treating natural rubber Download PDF

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Publication number
FR3114591B1
FR3114591B1 FR2009776A FR2009776A FR3114591B1 FR 3114591 B1 FR3114591 B1 FR 3114591B1 FR 2009776 A FR2009776 A FR 2009776A FR 2009776 A FR2009776 A FR 2009776A FR 3114591 B1 FR3114591 B1 FR 3114591B1
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FR
France
Prior art keywords
natural rubber
injection
sheath
injection device
auger machine
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.)
Active
Application number
FR2009776A
Other languages
French (fr)
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FR3114591A1 (en
Inventor
Jerome Dussillols
Poonyawat Prateeprat
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.)
Compagnie Generale des Etablissements Michelin SCA
Original Assignee
Compagnie Generale des Etablissements Michelin SCA
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 Compagnie Generale des Etablissements Michelin SCA filed Critical Compagnie Generale des Etablissements Michelin SCA
Priority to FR2009776A priority Critical patent/FR3114591B1/en
Priority to PCT/FR2021/051632 priority patent/WO2022064144A1/en
Publication of FR3114591A1 publication Critical patent/FR3114591A1/en
Application granted granted Critical
Publication of FR3114591B1 publication Critical patent/FR3114591B1/en
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/20—Compounding polymers with additives, e.g. colouring
    • C08J3/205—Compounding polymers with additives, e.g. colouring in the presence of a continuous liquid phase
    • C08J3/2053—Compounding polymers with additives, e.g. colouring in the presence of a continuous liquid phase the additives only being premixed with a liquid phase
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/12—Powdering or granulating
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2307/00—Characterised by the use of natural rubber
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/62—Plastics recycling; Rubber recycling

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

L’invention concerne un procédé de traitement d’un caoutchouc naturel qui comprend l’alimentation dans une machine à vis sans fin d’un caoutchouc naturel sous la forme d’un coagulum humide, la machine à vis sans fin étant une extrudeuse qui comprend un fourreau et qui est équipée d’un dispositif d’injection qui comprend un ou plusieurs orifices débouchant dans le fourreau, dits points d’injection, et d’une filière à trous en bout de vis, puis l’injection d’un peptisant dans le caoutchouc naturel par l’intermédiaire du dispositif d’injection, ensuite la compression du caoutchouc naturel dans le fourreau à une température allant de 130°C à 210°C, suivie d’une détente éclair adiabatique à une pression différentielle supérieure ou égale à 40 bars. Le procédé conduit à l’obtention de caoutchoucs naturels qui présentent un compromis amélioré entre leur résistance au vieillissement par thermooxydation et leur aptitude à être travaillés dans des outils de mélangeage ou de calandrage.A method of processing natural rubber includes feeding natural rubber in the form of a wet coagulum to an auger machine, the auger machine being an extruder that includes a sheath and which is equipped with an injection device which comprises one or more orifices opening into the sheath, called injection points, and a die with holes at the end of the screw, then the injection of a peptizer into the natural rubber via the injection device, then compressing the natural rubber in the barrel at a temperature ranging from 130°C to 210°C, followed by an adiabatic flash expansion at a differential pressure greater than or equal to at 40 bar. The process leads to the production of natural rubbers which have an improved compromise between their resistance to aging by thermooxidation and their ability to be worked in mixing or calendering tools.

FR2009776A 2020-09-25 2020-09-25 Process for treating natural rubber Active FR3114591B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR2009776A FR3114591B1 (en) 2020-09-25 2020-09-25 Process for treating natural rubber
PCT/FR2021/051632 WO2022064144A1 (en) 2020-09-25 2021-09-23 Method for processing natural rubber

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR2009776 2020-09-25
FR2009776A FR3114591B1 (en) 2020-09-25 2020-09-25 Process for treating natural rubber

Publications (2)

Publication Number Publication Date
FR3114591A1 FR3114591A1 (en) 2022-04-01
FR3114591B1 true FR3114591B1 (en) 2022-09-02

Family

ID=73699027

Family Applications (1)

Application Number Title Priority Date Filing Date
FR2009776A Active FR3114591B1 (en) 2020-09-25 2020-09-25 Process for treating natural rubber

Country Status (2)

Country Link
FR (1) FR3114591B1 (en)
WO (1) WO2022064144A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3134533A1 (en) 2022-04-15 2023-10-20 Compagnie Generale Des Etablissements Michelin Process for decontaminating natural rubber by filtration of a moist coagulum of natural rubber.

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3022247B1 (en) 2014-06-13 2018-01-19 Compagnie Generale Des Etablissements Michelin PROCESS FOR PREPARING NATURAL RUBBER
FR3034703B1 (en) 2015-04-10 2017-03-24 Michelin & Cie REMOVAL OF CONTAMINANTS IN WET NATURAL RUBBER
FR3043678B1 (en) 2015-11-17 2018-01-05 Compagnie Generale Des Etablissements Michelin PROCESS FOR PREPARING STABILIZED NATURAL RUBBER
FR3051795B1 (en) * 2016-05-31 2018-06-15 Compagnie Generale Des Etablissements Michelin PROCESS FOR DRYING NATURAL RUBBER
JP6899215B2 (en) * 2016-12-27 2021-07-07 Ｔｏｙｏ Ｔｉｒｅ株式会社 Masterbatch manufacturing method and tire manufacturing method
FR3088230B3 (en) * 2018-11-09 2020-12-04 Michelin & Cie PROCESS FOR TREATING A NATURAL RUBBER

Also Published As

Publication number Publication date
FR3114591A1 (en) 2022-04-01
WO2022064144A1 (en) 2022-03-31

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