GB830515A - Improvements in or relating to methods of polymerization using gamma radiation - Google Patents

Improvements in or relating to methods of polymerization using gamma radiation

Info

Publication number
GB830515A
GB830515A GB3520/56A GB352056A GB830515A GB 830515 A GB830515 A GB 830515A GB 3520/56 A GB3520/56 A GB 3520/56A GB 352056 A GB352056 A GB 352056A GB 830515 A GB830515 A GB 830515A
Authority
GB
United Kingdom
Prior art keywords
polymer
gamma radiation
solvent
composition
irradiated
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
GB3520/56A
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.)
Compagnie de Saint Gobain SA
Original Assignee
Compagnie de Saint Gobain SA
Manufactures des Glaces et Produits Chimiques de Saint Gobain SA
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 Compagnie de Saint Gobain SA, Manufactures des Glaces et Produits Chimiques de Saint Gobain SA filed Critical Compagnie de Saint Gobain SA
Publication of GB830515A publication Critical patent/GB830515A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F2/00—Processes of polymerisation
    • C08F2/46—Polymerisation initiated by wave energy or particle radiation

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)

Abstract

A method of addition-polymerizing comprising treating a monomer or mixture of monomers such as vinyl chloride, acrylic nitrile, tetrafluoroethylene and chlorofluoroethylene, with gamma radiation wherein the stream of the compound or composition successively passes through a space irradiated with gamma rays and through a separating means to remove the polymer formed and returning the unpolymerized compound or composition into the stream passing to the irradiated space. The gamma radiation souce may comprise two or more sources of different radio-active intensity and the reactions may be carried out in the presence or the absence of solvent or dispersant. Preferably where the polymer is formed in the presence of a solvent the polymer should be insoluble. The reaction may be catalytic. French Specification 1,104,262 is referred to.ALSO:A method of addition-polymerizing comprising treating a monomer or mixture of monomers, such as vinyl chloride, acrylic nitrile, tetrafluoroethylene and chlorofluoroethylene, with gamma radiation wherein the stream of the compound or composition sucsessively passes through a space irradiated with gamma rays and through a separating means to remove the polymer formed and returning the unpolymerized compound or composition into the stream passing to the irradiated space. The gamma radiation source may comprise two or more sources of different radio-active intensity and the reactions may be carried out in the presence or the absence of solvent or dispersent. Preferably where the polymer is formed in the presence of a solvent the polymer should be insoluble. The reaction may be catalytic, e.g. benzoyl peroxide may be present. French Specification 1,104,262 is referred to.
GB3520/56A 1955-02-03 1956-02-03 Improvements in or relating to methods of polymerization using gamma radiation Expired GB830515A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1121084T 1955-02-03

Publications (1)

Publication Number Publication Date
GB830515A true GB830515A (en) 1960-03-16

Family

ID=9631850

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3520/56A Expired GB830515A (en) 1955-02-03 1956-02-03 Improvements in or relating to methods of polymerization using gamma radiation

Country Status (3)

Country Link
BE (1) BE544924A (en)
FR (1) FR1121084A (en)
GB (1) GB830515A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3065157A (en) * 1956-06-11 1962-11-20 Du Pont Process for modifying polymers and products thus obtained
US2961388A (en) * 1956-07-25 1960-11-22 Monsanto Chemicals Dimerization of trichloroethylene
FR1169233A (en) * 1957-03-08 1958-12-24 Pechiney Chlorotrifluoroethylene based copolymers
US3342899A (en) * 1962-07-20 1967-09-19 Dow Chemical Co Process for polymerizing tetrafluoroethylene in continuous manner using high energy ionizing radiation

Also Published As

Publication number Publication date
FR1121084A (en) 1956-07-20
BE544924A (en)

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