GB761766A - Improvements in or relating to treatment of irradiated substances - Google Patents

Improvements in or relating to treatment of irradiated substances

Info

Publication number
GB761766A
GB761766A GB1566653A GB1566653A GB761766A GB 761766 A GB761766 A GB 761766A GB 1566653 A GB1566653 A GB 1566653A GB 1566653 A GB1566653 A GB 1566653A GB 761766 A GB761766 A GB 761766A
Authority
GB
United Kingdom
Prior art keywords
substances
treated
molecular weight
amount
remove
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
GB1566653A
Inventor
Arthur Charlesby
Maurice Ross
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.)
UK Atomic Energy Authority
Original Assignee
UK Atomic Energy Authority
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 UK Atomic Energy Authority filed Critical UK Atomic Energy Authority
Priority to GB1566653A priority Critical patent/GB761766A/en
Publication of GB761766A publication Critical patent/GB761766A/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
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/28—Treatment by wave energy or particle radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C71/00—After-treatment of articles without altering their shape; Apparatus therefor
    • B29C71/04—After-treatment of articles without altering their shape; Apparatus therefor by wave energy or particle radiation, e.g. for curing or vulcanising preformed articles

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Treatments Of Macromolecular Shaped Articles (AREA)

Abstract

Substances of high molecular weight characterized by a structure of chains consisting largely or wholly of carbon atoms and which have been subjected to the action of ionizing radiation, particularly in a thermal nuclear reactor, in amount of at least 1016 thermal neutrons per square centimetre, or the equivalent, are treated to remove or to reduce the amount of substances of relatively low molecular weight, preferably by heating at low pressure or by solvent extraction. The substances treated may be those referred to in Specification 732,047, viz. polythene, polystyrene, polyvinyl chloride, nylon, neoprene, polyvinyl acetate, polyvinyl alcohol and polymethyl methacrylate.ALSO:Paraffin wax subjected to ionizing radiation by the process of Specification 732,047 is treated to remove or to reduce the amount of substances of relatively low molecular weight, preferably by heating at low pressure or by solvent extraction.ALSO:Rubber, smoked rubber or guttapercha subjected to ionising radiation by the process of Specification 732,047 is treated to remove or to reduce the amount of substances of relatively low molecular weight, preferably by heating at low pressure or by solvent extraction.
GB1566653A 1953-06-06 1953-06-06 Improvements in or relating to treatment of irradiated substances Expired GB761766A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1566653A GB761766A (en) 1953-06-06 1953-06-06 Improvements in or relating to treatment of irradiated substances

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1566653A GB761766A (en) 1953-06-06 1953-06-06 Improvements in or relating to treatment of irradiated substances

Publications (1)

Publication Number Publication Date
GB761766A true GB761766A (en) 1956-11-21

Family

ID=10063252

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1566653A Expired GB761766A (en) 1953-06-06 1953-06-06 Improvements in or relating to treatment of irradiated substances

Country Status (1)

Country Link
GB (1) GB761766A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3090735A (en) * 1959-03-06 1963-05-21 Mandelkern Leo Method for making a fiber with reversible dimensional changes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3090735A (en) * 1959-03-06 1963-05-21 Mandelkern Leo Method for making a fiber with reversible dimensional changes

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