GB772088A - Improvements relating to organopolysiloxanes - Google Patents

Improvements relating to organopolysiloxanes

Info

Publication number
GB772088A
GB772088A GB17120/54A GB1712054A GB772088A GB 772088 A GB772088 A GB 772088A GB 17120/54 A GB17120/54 A GB 17120/54A GB 1712054 A GB1712054 A GB 1712054A GB 772088 A GB772088 A GB 772088A
Authority
GB
United Kingdom
Prior art keywords
stabilized
siloxanes
alkali metal
compounds
convertible
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
GB17120/54A
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Publication of GB772088A publication Critical patent/GB772088A/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
    • C08G77/04—Polysiloxanes
    • C08G77/12—Polysiloxanes containing silicon bound to hydrogen
    • 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
    • C08G77/14—Polysiloxanes containing silicon bound to oxygen-containing groups
    • C08G77/16—Polysiloxanes containing silicon bound to oxygen-containing groups to hydroxyl groups
    • 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
    • C08G77/22—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen and oxygen
    • C08G77/30—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen and oxygen phosphorus-containing groups
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

Organopolysiloxane oils, resins and liquids or gums convertible to the solid, elastic state, which have been made by polymerizing lower molecular weight siloxanes with alkali-metal compounds, are stabilized (against deterioration at elevated temperatures) by incorporating therein organophosphorus compounds, a long list of which is given. Alkali metal compounds specified are alkali metal (Na, K, Li, Rb, Cs) hydroxides, alkoxides, thioalkoxides, silanolates, complexes of aromatic hydrocarbons such as naphthalene or anthracene; compounds of the formula (ROH)xMOH, where R is a hydrocarbon radical and M is an alkali metal, and alkali metal salts of organopolysiloxanes. The stabilized convertible siloxanes containing Sibonded hydrocarbon and/or halogenated hydrocarbon radicals and possibly some -Si-R-Si-groups, may be compounded in known manner with fillers, e.g. titania, silica aerogel, diatomaceous earth, fumed silica, g -alumina, calcium carbonate and polytetrafluorethylene particles and fibres, curing agents, benzoyl peroxide, t.-butylperbenzoate and 2,21-azobis-isobutyronitrile, compression set additives, and cured. In examples: (1,2) a methyl siloxane oil made by intercondensing octamethylcyclo-, and decamethyl-tetrasiloxanes in the presence of KOH was stabilized by adding triphenyl-phosphate or other organophosphorus compounds, and then stripped of low-boiling polymers; (3) a similarly made oil containing methyl and phenyl radicals was also stabilized by triphenyl phosphate; (4, 5, 6) alkali catalysed convertible siloxanes were stabilized by adding various organophosphorus compounds thereto and then compounded with fillers &c. in known manner. Compositions for coating heat-resistant cloths are made by dispersing the stabilized siloxanes together with fillers and curing agent in liquid media, e.g. benzene, xylene and toluene. The compositions find use as insulating materials for electrical conductors, gasket materials, shockabsorbers and in making heater ducts. Specifications 586,187, 594,481, [both in Group IV], 618,453, 640,067 and 757,024 are referred to.
GB17120/54A 1953-06-24 1954-06-10 Improvements relating to organopolysiloxanes Expired GB772088A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US772088XA 1953-06-24 1953-06-24

Publications (1)

Publication Number Publication Date
GB772088A true GB772088A (en) 1957-04-10

Family

ID=22136695

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17120/54A Expired GB772088A (en) 1953-06-24 1954-06-10 Improvements relating to organopolysiloxanes

Country Status (1)

Country Link
GB (1) GB772088A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3337497A (en) * 1966-04-11 1967-08-22 Gen Electric Ordered organopolysiloxanes
DE2720534A1 (en) * 1977-05-06 1978-11-09 Polychemie Gmbh ADDITIVES TO ELASTIC SEALING COMPOUNDS AND ADHESIVE MATERIALS

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3337497A (en) * 1966-04-11 1967-08-22 Gen Electric Ordered organopolysiloxanes
DE2720534A1 (en) * 1977-05-06 1978-11-09 Polychemie Gmbh ADDITIVES TO ELASTIC SEALING COMPOUNDS AND ADHESIVE MATERIALS

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