GB944028A - Heatproof insulating material - Google Patents

Heatproof insulating material

Info

Publication number
GB944028A
GB944028A GB367061A GB367061A GB944028A GB 944028 A GB944028 A GB 944028A GB 367061 A GB367061 A GB 367061A GB 367061 A GB367061 A GB 367061A GB 944028 A GB944028 A GB 944028A
Authority
GB
United Kingdom
Prior art keywords
peroxide
polycarbonate
organosiloxane
breakdown temperature
insulating material
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
GB367061A
Inventor
Friedrich Wilhelm Schraenkler
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.)
NORDDEUTSCHE KABELWERKE AG
Original Assignee
NORDDEUTSCHE KABELWERKE AG
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 NORDDEUTSCHE KABELWERKE AG filed Critical NORDDEUTSCHE KABELWERKE AG
Priority to GB367061A priority Critical patent/GB944028A/en
Publication of GB944028A publication Critical patent/GB944028A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L83/00—Compositions 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; Compositions of derivatives of such polymers
    • C08L83/04—Polysiloxanes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
    • C08G77/42—Block-or graft-polymers containing polysiloxane sequences
    • C08G77/445—Block-or graft-polymers containing polysiloxane sequences containing polyester sequences
    • C08G77/448—Block-or graft-polymers containing polysiloxane sequences containing polyester sequences containing polycarbonate sequences
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L69/00—Compositions of polycarbonates; Compositions of derivatives of polycarbonates
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
    • C08G77/04—Polysiloxanes
    • C08G77/06—Preparatory processes

Landscapes

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

Abstract

Silicone rubbers are produced by copolymerizing an organosiloxane with an organic polycarbonate of the formula: <FORM:0944028/C3/1> where n is in the range 10 to 17, by means of a di-t-alkyl peroxide catalyst which is only active at temperatures above 150 DEG C. By the addition of inhibitors and softeners the breakdown temperature of the peroxide can be made to approximate to the softening point of the polycarbonate. A peroxide (e.g. benzoyl peroxide) with a breakdown temperature below 150 DEG C. may be incorporated to partially cross link the organosiloxane before it is copolymerized with the polycarbonate. In the example a silicone rubber is prepared from an unpolymerized methyl siloxane, a polycarbonate of the above formula (n=15) di-t-butyl peroxide, henzoyl peroxide, a mineral oil plasticizer having a high naphthalene content, hydroquinone (an inhibitor) and kaolin.
GB367061A 1961-01-31 1961-01-31 Heatproof insulating material Expired GB944028A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB367061A GB944028A (en) 1961-01-31 1961-01-31 Heatproof insulating material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB367061A GB944028A (en) 1961-01-31 1961-01-31 Heatproof insulating material

Publications (1)

Publication Number Publication Date
GB944028A true GB944028A (en) 1963-12-11

Family

ID=9762730

Family Applications (1)

Application Number Title Priority Date Filing Date
GB367061A Expired GB944028A (en) 1961-01-31 1961-01-31 Heatproof insulating material

Country Status (1)

Country Link
GB (1) GB944028A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1595790A1 (en) * 1966-01-03 1970-02-12 Gen Electric Organopolysiloxane, polycarbonate copolymers and processes for their preparation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1595790A1 (en) * 1966-01-03 1970-02-12 Gen Electric Organopolysiloxane, polycarbonate copolymers and processes for their preparation

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