GB867066A - Improvements in or relating to organosilicon compositions - Google Patents
Improvements in or relating to organosilicon compositionsInfo
- Publication number
- GB867066A GB867066A GB37425/59A GB3742559A GB867066A GB 867066 A GB867066 A GB 867066A GB 37425/59 A GB37425/59 A GB 37425/59A GB 3742559 A GB3742559 A GB 3742559A GB 867066 A GB867066 A GB 867066A
- Authority
- GB
- United Kingdom
- Prior art keywords
- disclosed
- diorganopolysiloxane
- rays
- mixing
- silicate
- 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
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
- C08G77/14—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
- C08G77/70—Siloxanes defined by use of the MDTQ nomenclature
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- 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)
- Sealing Material Composition (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
A heat-stable elastomer-forming composition comprises an essentially diorganopolysiloxane and from 0,001 to 8% by weight of the siloxane of a lanthanide rare earth metal (i.e. lanthanum, cerium, praeseodymium, neodymium, sarmarium, europium, terbium, dysprosium, holmium, erbium, thulium, ytterbium or lutemium) present as an oxide or hydroxide. The siloxanes used consist primarily of R2SiO units, may contain R3SiO 1/2 and SiO2 units, and preferably have a R/Si ratio of 1,98 : 1 to 2,01 : 1 and terminal Si-bonded hydroxyl, alkoxy, vinyl or acyl radicals or hydrogen atoms, R being alkyl, alkenyl, acyl, aralkyl, alkaryl or halogenated hydrocarbon. Fillers per se or modified with organosilyl groups, e.g. TiO2, Fe2O3, ZnO, asbestos and glass fibres, diatomaceous earth, crushed quartz and silica (fume, aerogel and precipitated) having a surface area greater than 50 m2/g, may be added. The compositions may be cured (i) by exposing them to X-rays, g -rays or to ultra-violet light, (ii) by heating with organic peroxides, e.g. benzoyl-, dichlorobenzoyl- and di-t-butyl-peroxides and t-butyl perbenzoate, or (iii) at room temperature, by mixing an acid-free diorganopolysiloxane and an organic silicate in the presence of a metal carboxylate, as disclosed in Specification 764,246, or in a modification by using a "Cellosolve" (Registered Trade Mark) silicate with the carboxylate, as disclosed in Specification 844,128; by mixing a hydroxylated diorganopolysiloxane with an organohydrogen siloxane as disclosed in Specification 804,199; or by exposing certain acyloxy-terminated diorganopolysiloxanes to moisture, as disclosed in Specification 862,576. Examples are given. Uses: for gaskets, caulking and tubing.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US867066XA | 1958-11-28 | 1958-11-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB867066A true GB867066A (en) | 1961-05-03 |
Family
ID=22200333
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB37425/59A Expired GB867066A (en) | 1958-11-28 | 1959-11-04 | Improvements in or relating to organosilicon compositions |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB867066A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3304201A (en) * | 1967-02-14 | Acyloxy endblocked room temperature vulcanizable siloxane rubber for wire coating | ||
JPS60155265A (en) * | 1984-01-24 | 1985-08-15 | Shin Etsu Chem Co Ltd | Production of cured article of organopolysiloxane |
EP0415180A2 (en) * | 1989-08-28 | 1991-03-06 | General Electric Company | Low compression set, oil and fuel resistant, liquid injection moldable, silicone rubber |
-
1959
- 1959-11-04 GB GB37425/59A patent/GB867066A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3304201A (en) * | 1967-02-14 | Acyloxy endblocked room temperature vulcanizable siloxane rubber for wire coating | ||
JPS60155265A (en) * | 1984-01-24 | 1985-08-15 | Shin Etsu Chem Co Ltd | Production of cured article of organopolysiloxane |
EP0415180A2 (en) * | 1989-08-28 | 1991-03-06 | General Electric Company | Low compression set, oil and fuel resistant, liquid injection moldable, silicone rubber |
EP0415180A3 (en) * | 1989-08-28 | 1993-04-14 | General Electric Company | Low compression set, oil and fuel resistant, liquid injection moldable, silicone rubber |
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