GB1454302A - Cellular plastics - Google Patents

Cellular plastics

Info

Publication number
GB1454302A
GB1454302A GB1270673A GB1270673A GB1454302A GB 1454302 A GB1454302 A GB 1454302A GB 1270673 A GB1270673 A GB 1270673A GB 1270673 A GB1270673 A GB 1270673A GB 1454302 A GB1454302 A GB 1454302A
Authority
GB
United Kingdom
Prior art keywords
cellular
vapour
polymers
march
solvent
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
GB1270673A
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.)
RUBBER PLASTICS RESEARCH ASS O
Original Assignee
RUBBER PLASTICS RESEARCH ASS O
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 RUBBER PLASTICS RESEARCH ASS O filed Critical RUBBER PLASTICS RESEARCH ASS O
Priority to GB1270673A priority Critical patent/GB1454302A/en
Publication of GB1454302A publication Critical patent/GB1454302A/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
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
    • 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
    • C08J11/06—Recovery or working-up of waste materials of polymers without chemical reactions
    • C08J11/08—Recovery or working-up of waste materials of polymers without chemical reactions using selective solvents for polymer components
    • 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
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
    • C08J9/14—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent organic
    • C08J9/141—Hydrocarbons
    • 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

1454302 Recovering polymers from cellular polymers RUBBER & PLASTICS RESEARCH ASSOCIATION OF GREAT BRITAIN 15 March 1974 [16 March 1973] 12706/73 Heading C3P Non-cellular polymers of ethylenically unsaturated monomers are made by contacting the cellular polymer with the vapour of a refluxing solvent whereby the vapour condenses on the cellular polymer, dissolves a portion thereof and the resultant solution returns to the liquid phase of the refluxing solvent. In the drawing, styrene (A) is heated in a Z blade mixer (B) with steam to produce vapour which rises up the feed shoot (C) to dissolve cellular polystyrene which is introduced via hatch (F) and forced down (C) by a ram (E) below the condenser coil (D). The solvent is boiled off to leave a concentrated polystyrene solution which may be granulated or comminuted, or if the styrene contains a peroxide the solution may be polymerized. Cellular polymethylmethacryl or polyvinylchloride may be dissolved in an acrylic monomer.
GB1270673A 1973-03-16 1973-03-16 Cellular plastics Expired GB1454302A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1270673A GB1454302A (en) 1973-03-16 1973-03-16 Cellular plastics

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1270673A GB1454302A (en) 1973-03-16 1973-03-16 Cellular plastics

Publications (1)

Publication Number Publication Date
GB1454302A true GB1454302A (en) 1976-11-03

Family

ID=10009627

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1270673A Expired GB1454302A (en) 1973-03-16 1973-03-16 Cellular plastics

Country Status (1)

Country Link
GB (1) GB1454302A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2649353A1 (en) * 1989-07-07 1991-01-11 Mendy Michel Method of recycling expanded polystyrene waste
EP0554379A1 (en) * 1990-10-22 1993-08-11 Mobil Oil Corporation Decontamination of polystyrene
GB2275271A (en) * 1993-02-16 1994-08-24 Sam White Ray Reclamation of thermoplastic waste

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2649353A1 (en) * 1989-07-07 1991-01-11 Mendy Michel Method of recycling expanded polystyrene waste
EP0554379A1 (en) * 1990-10-22 1993-08-11 Mobil Oil Corporation Decontamination of polystyrene
EP0554379A4 (en) * 1990-10-22 1993-08-18 Mobil Oil Corporation Decontamination of polystyrene
GB2275271A (en) * 1993-02-16 1994-08-24 Sam White Ray Reclamation of thermoplastic waste
GB2275271B (en) * 1993-02-16 1996-07-31 Sam White Ray Reclamation of thermoplastic wastes

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee