GB912259A - Improvements in or relating to the curing of silicones by irradiation - Google Patents

Improvements in or relating to the curing of silicones by irradiation

Info

Publication number
GB912259A
GB912259A GB1365759A GB1365759A GB912259A GB 912259 A GB912259 A GB 912259A GB 1365759 A GB1365759 A GB 1365759A GB 1365759 A GB1365759 A GB 1365759A GB 912259 A GB912259 A GB 912259A
Authority
GB
United Kingdom
Prior art keywords
siloxanes
radicals
atoms
oxygen
time delay
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
GB1365759A
Inventor
Cyril John Baker
Raymond Leslie Bass
William Henry
Thomas Davison
Dewi Gerwyn Lloyd
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.)
Midland Silicones Ltd
TI Group Services Ltd
Original Assignee
Midland Silicones Ltd
TI Group Services 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 Midland Silicones Ltd, TI Group Services Ltd filed Critical Midland Silicones Ltd
Priority to GB1365759A priority Critical patent/GB912259A/en
Publication of GB912259A publication Critical patent/GB912259A/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
    • 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
    • C08J2383/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
    • C08J2383/04—Polysiloxanes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Polymerisation Methods In General (AREA)
  • Silicon Polymers (AREA)

Abstract

In making objects of cured siloxanes, an organopolysiloxane, in which at least 0,5% of the Si-bonded radicals or atoms are unsaturated aliphatic hydrocarbon radicals and/or H atoms, is subjected to the action of a quantity of high energy radiation insufficient to cause immediate gelation but sufficient to cause gelation by cross-linking after a time delay. The siloxanes used are liquids or gums and contain, in addition to the above, monovalent hydrocarbon or halohydrocarbon radicals. The siloxanes may also contain fillers. During the time delay the siloxane may be formed into its final shape as by moulding or extrusion. The irradiation should be effected in the absence of air or oxygen, and premature curing may be prevented by cooling, exposure to air or oxygen or by adding inhibitors, e.g. benzoquinone. Examples are given. The irradiated siloxanes will initiate polymerization of monomers polymerizable by free-radical mechanism and this property is useful in grafting polymers (e.g. acrylonitrile, styrene, vinyl acetate and methylmethacrylate) on to siloxanes.
GB1365759A 1959-04-22 1959-04-22 Improvements in or relating to the curing of silicones by irradiation Expired GB912259A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1365759A GB912259A (en) 1959-04-22 1959-04-22 Improvements in or relating to the curing of silicones by irradiation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1365759A GB912259A (en) 1959-04-22 1959-04-22 Improvements in or relating to the curing of silicones by irradiation

Publications (1)

Publication Number Publication Date
GB912259A true GB912259A (en) 1962-12-05

Family

ID=10027026

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1365759A Expired GB912259A (en) 1959-04-22 1959-04-22 Improvements in or relating to the curing of silicones by irradiation

Country Status (1)

Country Link
GB (1) GB912259A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0203738A2 (en) * 1985-05-02 1986-12-03 RAYCHEM CORPORATION (a Delaware corporation) Curable organopolysiloxane composition
EP0203737A2 (en) * 1985-05-02 1986-12-03 RAYCHEM CORPORATION (a Delaware corporation) Radiation grafting of organopolysiloxanes
US4950546A (en) * 1985-05-02 1990-08-21 Raychem Corporation Radiation grafting of organopolysiloxanes
US5037667A (en) * 1985-05-02 1991-08-06 Raychem Corporation Radiation grafting of organopolysiloxanes

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0203738A2 (en) * 1985-05-02 1986-12-03 RAYCHEM CORPORATION (a Delaware corporation) Curable organopolysiloxane composition
EP0203737A2 (en) * 1985-05-02 1986-12-03 RAYCHEM CORPORATION (a Delaware corporation) Radiation grafting of organopolysiloxanes
EP0203738A3 (en) * 1985-05-02 1988-01-13 RAYCHEM CORPORATION (a Delaware corporation) Curable organopolysiloxane composition
EP0203737A3 (en) * 1985-05-02 1988-06-01 Raychem Corporation (A California Corporation) Radiation grafting of organopolysiloxanes radiation grafting of organopolysiloxanes
US4950546A (en) * 1985-05-02 1990-08-21 Raychem Corporation Radiation grafting of organopolysiloxanes
US5037667A (en) * 1985-05-02 1991-08-06 Raychem Corporation Radiation grafting of organopolysiloxanes

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