GB622914A - Process and apparatus for the depolymerisation or degradation of natural or synthetic rubber in the crude state and for the regeneration of vulcanised or partly vulcanised rubber - Google Patents

Process and apparatus for the depolymerisation or degradation of natural or synthetic rubber in the crude state and for the regeneration of vulcanised or partly vulcanised rubber

Info

Publication number
GB622914A
GB622914A GB1485745A GB1485745A GB622914A GB 622914 A GB622914 A GB 622914A GB 1485745 A GB1485745 A GB 1485745A GB 1485745 A GB1485745 A GB 1485745A GB 622914 A GB622914 A GB 622914A
Authority
GB
United Kingdom
Prior art keywords
rubber
vulcanised
infra
rays
treated
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
GB1485745A
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.)
ELECTRO CABLE SOC
Original Assignee
ELECTRO CABLE SOC
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 ELECTRO CABLE SOC filed Critical ELECTRO CABLE SOC
Publication of GB622914A publication Critical patent/GB622914A/en
Expired legal-status Critical Current

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
    • C08J11/12—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 dry-heat treatment only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08C—TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS
    • C08C19/00—Chemical modification of rubber
    • C08C19/08—Depolymerisation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2021/00—Use of unspecified rubbers as moulding material
    • 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)
  • Organic Chemistry (AREA)
  • Medicinal Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Polymers & Plastics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Thermal Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Sustainable Development (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

Natural and synthetic rubbers in their unvulcanized or vulcanized state are depolymerized by exposing the rubber to rays from infra-red lamps or radiators. Preferably the rubber is heated to 180 DEG C. and treated with rays of wavelength 10,000-20,000 Angstrom units in an apparatus comprising a thermally-insulated <PICT:0622914/III/1> chamber 1 coated internally with aluminium and fitted with a set of infra-red lamps 5 arranged in a horizontal plane below the material to be treated, which moves along on a metallic grate 6 which is supported by rollers 7 and 8.ALSO:<PICT:0622914/IV (a)/1> Synthetic rubbers such as butyl rubber, chloroprene polymer, ethylenic polysulphides, polyisobutylenes and copolymers of butadiene with styrene are depolymerized by exposing the rubber to rays from infra-red lamps or radiators. Preferably the rubber is heated to 180 DEG C. and treated with rays of wavelength 10,000-20,000 Angstrom units in an apparatus comprising a thermally insulated chamber 1 (Fig. 1) coated internally with aluminium and fitted with a set of infra-red lamps 5, arranged in a horizontal plane below the material to be treated, which moves along on a metallic grate 6 which is supported by rollers 7 and 8.
GB1485745A 1944-03-02 1945-06-12 Process and apparatus for the depolymerisation or degradation of natural or synthetic rubber in the crude state and for the regeneration of vulcanised or partly vulcanised rubber Expired GB622914A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR906544T 1944-03-02

Publications (1)

Publication Number Publication Date
GB622914A true GB622914A (en) 1949-05-10

Family

ID=9405770

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1485745A Expired GB622914A (en) 1944-03-02 1945-06-12 Process and apparatus for the depolymerisation or degradation of natural or synthetic rubber in the crude state and for the regeneration of vulcanised or partly vulcanised rubber

Country Status (2)

Country Link
FR (1) FR906544A (en)
GB (1) GB622914A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3160595A (en) * 1961-08-30 1964-12-08 Dpr Inc Curing system for depolymerized polyisoprene rubber
US3342759A (en) * 1962-06-04 1967-09-19 Kee Lox Mfg Company Self-contained inking material and process for making same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3160595A (en) * 1961-08-30 1964-12-08 Dpr Inc Curing system for depolymerized polyisoprene rubber
US3342759A (en) * 1962-06-04 1967-09-19 Kee Lox Mfg Company Self-contained inking material and process for making same

Also Published As

Publication number Publication date
FR906544A (en) 1946-01-09

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