GB819245A - Silicone elastomers - Google Patents

Silicone elastomers

Info

Publication number
GB819245A
GB819245A GB33012/55A GB3301255A GB819245A GB 819245 A GB819245 A GB 819245A GB 33012/55 A GB33012/55 A GB 33012/55A GB 3301255 A GB3301255 A GB 3301255A GB 819245 A GB819245 A GB 819245A
Authority
GB
United Kingdom
Prior art keywords
heat
radicals
catalyst
tertiary butyl
curing
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
GB33012/55A
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.)
Union Carbide Corp
Original Assignee
Union Carbide Corp
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 Union Carbide Corp filed Critical Union Carbide Corp
Publication of GB819245A publication Critical patent/GB819245A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/14—Peroxides
    • 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
    • C08G77/20—Polysiloxanes containing silicon bound to unsaturated aliphatic 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
    • C08G77/70—Siloxanes defined by use of the MDTQ nomenclature
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/02—Elements
    • C08K3/04—Carbon
    • 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
    • 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

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

A flowable heat-curable gum stock comprises: (1) one or more polysiloxanes convertible to the solid elastic state and containing substantially 2 hydrocarbon radicals per Si atom which are methyl, ethyl or phenyl radicals and vinyl, allyl or cyclohexenyl radicals, the unsaturated radicals being present in amount such that from 0.037 to 0.74 per cent of the total Si atoms are bonded therewith; and (2) a dialkyl peroxide as catalyst. Siloxane (1) may be linear or cyclic or a mixture thereof and may contain a small amount of <FORM:0819245/IV (a)/1> units. Catalysts specified are di-tertiary butyl-, tertiary butyl-tri-ethylmethyl- and tertiary butyl tertiary triptyl-peroxides. The gum and filler, e.g. silica, zirconium silicate, diatomaceous earth, calcium carbonate and carbon black may be subjected to a room temperature ageing period or to a precure heat-ageing at 250 DEG to 300 DEG F. before addition of the curing catalyst. After heat curing at 300 DEG F. or above, the products are subjected to a heat-ageing treatment. Examples are given, some of which are comparative, in which the siloxane, filler, catalyst or pre- or post-curing treatment is varied.
GB33012/55A 1954-11-23 1955-11-18 Silicone elastomers Expired GB819245A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US819245XA 1954-11-23 1954-11-23

Publications (1)

Publication Number Publication Date
GB819245A true GB819245A (en) 1959-09-02

Family

ID=22167266

Family Applications (1)

Application Number Title Priority Date Filing Date
GB33012/55A Expired GB819245A (en) 1954-11-23 1955-11-18 Silicone elastomers

Country Status (1)

Country Link
GB (1) GB819245A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2860355A1 (en) * 2013-10-10 2015-04-15 Alstom Technology Ltd Gasket for use in high-temperature applications and method for manufacturing a gasket

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2860355A1 (en) * 2013-10-10 2015-04-15 Alstom Technology Ltd Gasket for use in high-temperature applications and method for manufacturing a gasket

Similar Documents

Publication Publication Date Title
GB953668A (en) High temperature siloxane compositions
ES480461A1 (en) High strength, extrudable silicone elastomer compositions
GB904548A (en) Process for treating fillers
GB1489637A (en) Organopolysiloxane compositions curable to transparent elastomers
GB1329649A (en) Method of damping vibration and article
GB945810A (en) Process for producing organosilicon compounds
GB774869A (en) Silicone rubber of improved thermal stability
GB819245A (en) Silicone elastomers
GB1066550A (en) Process for the manufacture of polyorganosiloxane elastomers
GB942064A (en) Curable liquid siloxane compositions
ES8300815A1 (en) Process for regulating the cure of silicone rubber products
GB936408A (en) Improvements in or relating to siloxane elastomers
GB939572A (en) Improved organosiloxane compositions and elastomers prepared therefrom
GB918596A (en) Improvements relating to organopolysiloxanes
GB1039501A (en) Heat stable organosilicon elastomeric compositions of high strength and low elongation
GB893399A (en) Improvements in or relating to organosiloxane compositions
GB858764A (en) Improvements in the stabilization of convertible siloxanes and materials coated therewith
GB981823A (en) Improvements in organopolysiloxane compounds and compositions
GB735736A (en) Improvements in and relating to silicone rubbers
GB844128A (en) Siloxane elastomers
GB847082A (en) Cyclosiloxane polymers
GB866998A (en) Improvements in or relating to siloxane elastomers
GB932511A (en) Improvements relating to methylpolysiloxanes
JPH0588724B2 (en)
GB697057A (en) Improvements in or relating to heat-hardenable siloxane compositions