GB580051A - Improvements in or relating to the reclaiming of vulcanised synthetic rubber-like material - Google Patents

Improvements in or relating to the reclaiming of vulcanised synthetic rubber-like material

Info

Publication number
GB580051A
GB580051A GB406044A GB406044A GB580051A GB 580051 A GB580051 A GB 580051A GB 406044 A GB406044 A GB 406044A GB 406044 A GB406044 A GB 406044A GB 580051 A GB580051 A GB 580051A
Authority
GB
United Kingdom
Prior art keywords
synthetic rubber
vulcanized
oxygen
reclaimed
reclaiming
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
GB406044A
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.)
WILLIAM ARCHIBALD MCCOWAN
Dunlop Rubber Co Ltd
Original Assignee
WILLIAM ARCHIBALD MCCOWAN
Dunlop Rubber Co 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 WILLIAM ARCHIBALD MCCOWAN, Dunlop Rubber Co Ltd filed Critical WILLIAM ARCHIBALD MCCOWAN
Priority to GB406044A priority Critical patent/GB580051A/en
Publication of GB580051A publication Critical patent/GB580051A/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
    • C08J11/14—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 steam or water
    • 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

Abstract

Vulcanized synthetic rubber-like material of the type produced by the co-polymerization of butadiene with other polymerizable substances such as styrene is reclaimed by heating the comminuted material to a temperature of at least 160 DEG C. while continually exposing fresh surfaces of the material in the presence of oxygen. In a preferred embodiment, a vulcanized tyre tread composition containing GR-S synthetic rubber to which may be added a proportion of vulcanized natural rubber is ground to pass a 10 mesh per inch sieve. The crumb is then rapidly heated to 160-200 DEG C. in a rotating horizontal cylindrical drum having centrally situated apertures in each end through which air and oxygen are fed; after 10-15 minutes the reclaimed material is rapidly cooled and sheeted on water cooled rolls. Softeners such as the coumarone resins particularly the softer types, petroleum residues and pine-tar may be added during the process.
GB406044A 1944-03-04 1944-03-04 Improvements in or relating to the reclaiming of vulcanised synthetic rubber-like material Expired GB580051A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB406044A GB580051A (en) 1944-03-04 1944-03-04 Improvements in or relating to the reclaiming of vulcanised synthetic rubber-like material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB406044A GB580051A (en) 1944-03-04 1944-03-04 Improvements in or relating to the reclaiming of vulcanised synthetic rubber-like material

Publications (1)

Publication Number Publication Date
GB580051A true GB580051A (en) 1946-08-26

Family

ID=9769964

Family Applications (1)

Application Number Title Priority Date Filing Date
GB406044A Expired GB580051A (en) 1944-03-04 1944-03-04 Improvements in or relating to the reclaiming of vulcanised synthetic rubber-like material

Country Status (1)

Country Link
GB (1) GB580051A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2800462A (en) * 1953-02-12 1957-07-23 Us Rubber Reclaiming Co Method of production of reclaimed rubber in discrete particle form
DE1291502B (en) * 1965-07-20 1969-03-27
DE2513146A1 (en) * 1974-03-29 1975-10-09 Derek William Sear METHOD FOR TREATMENT OF CROSS-LINKED, NON-PLASTIC RUBBER
US4125578A (en) 1974-03-29 1978-11-14 Setech International Limited Reclaimed vulcanized rubber
US4499218A (en) * 1981-06-04 1985-02-12 Lyakhevich Genrikh D Vulcanizable rubber compound

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2800462A (en) * 1953-02-12 1957-07-23 Us Rubber Reclaiming Co Method of production of reclaimed rubber in discrete particle form
DE1291502B (en) * 1965-07-20 1969-03-27
DE2513146A1 (en) * 1974-03-29 1975-10-09 Derek William Sear METHOD FOR TREATMENT OF CROSS-LINKED, NON-PLASTIC RUBBER
US4125578A (en) 1974-03-29 1978-11-14 Setech International Limited Reclaimed vulcanized rubber
US4499218A (en) * 1981-06-04 1985-02-12 Lyakhevich Genrikh D Vulcanizable rubber compound

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