MX9803186A - Proceso de desvulcanizacion del hule. - Google Patents

Proceso de desvulcanizacion del hule.

Info

Publication number
MX9803186A
MX9803186A MX9803186A MX9803186A MX9803186A MX 9803186 A MX9803186 A MX 9803186A MX 9803186 A MX9803186 A MX 9803186A MX 9803186 A MX9803186 A MX 9803186A MX 9803186 A MX9803186 A MX 9803186A
Authority
MX
Mexico
Prior art keywords
rubber
vulcanizate
solvent
devulcanized
rubber polymer
Prior art date
Application number
MX9803186A
Other languages
English (en)
Other versions
MXPA98003186A (es
Inventor
Ronald D Myers
Peter Nicholson
Michael E Moir
John B Macleod
Original Assignee
Exxon Research Engineering Co
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
Priority claimed from US08/549,593 external-priority patent/US5602186A/en
Application filed by Exxon Research Engineering Co filed Critical Exxon Research Engineering Co
Publication of MX9803186A publication Critical patent/MX9803186A/es
Publication of MXPA98003186A publication Critical patent/MXPA98003186A/es

Links

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
    • C08J11/00—Recovery or working-up of waste materials
    • C08J11/04—Recovery or working-up of waste materials of polymers
    • C08J11/10—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation
    • C08J11/16—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with inorganic material
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L21/00—Compositions of unspecified rubbers
    • 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
    • C08J2321/00—Characterised by the use of unspecified rubbers
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)

Abstract

Un procedimiento para la desvulcanizacion y funcionalizacion de un vulcanizado de hule por desulfuracion, que implica suspender un trozo de vulcanizado de hule en un solvente, el cual preferiblemente hincha el vulcanizado de hule antes o durante la reaccion de desvulcanizacion y agregar un metal alcalino, tal como el sodio, a la suspension. El metal alcalino desdobla los entrelazamientos mono-, di- y poli-sulfídicos en el vulcanizado de hule, para liberar el polímero de hule, que tiene un peso molecular substancialmente igual a aquél del polímero de hule, antes de la vulcanizacion. Grupos funcionales derivados de los enlaces de moléculas del solvente al esqueleto polimérico del hule desvulcanizado. Además del polímero de hule desvulcanizado, el negro de carbon puede también ser recuperado por la reutilizacion de acuerdo con el procedimiento de la presente invencion. El hule desvulcanizado funcionalizado puede ser sujeto a una reaccion de revulcanizacion sin separacion del polímero de hule del solvente, por la adicion de una mezcla de curacion apropiada.
MXPA/A/1998/003186A 1995-10-27 1998-04-23 Proceso de desvulcanizacion del hule MXPA98003186A (es)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US08549593 1995-10-27
US08/549,593 US5602186A (en) 1995-10-27 1995-10-27 Rubber devulcanization process
US08/734,323 US5798394A (en) 1995-10-27 1996-10-21 Rubber devulcanization process
US08734323 1996-10-21

Publications (2)

Publication Number Publication Date
MX9803186A true MX9803186A (es) 1998-09-30
MXPA98003186A MXPA98003186A (es) 1998-11-16

Family

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Also Published As

Publication number Publication date
WO1997015614A1 (en) 1997-05-01
US5798394A (en) 1998-08-25
AU712065B2 (en) 1999-10-28
HUP9802428A2 (hu) 1999-02-01
PL326366A1 (en) 1998-09-14
TW494116B (en) 2002-07-11
CN1346840A (zh) 2002-05-01
CN1087021C (zh) 2002-07-03
EP0857187A1 (en) 1998-08-12
CZ109298A3 (cs) 1999-10-13
CA2231514A1 (en) 1997-05-01
KR19990067064A (ko) 1999-08-16
JPH11514020A (ja) 1999-11-30
HUP9802428A3 (en) 1999-03-29
AU7474096A (en) 1997-05-15
BR9611260A (pt) 1999-05-11
CN1200745A (zh) 1998-12-02

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Legal Events

Date Code Title Description
FG Grant or registration
MM Annulment or lapse due to non-payment of fees