GB957108A - Organopolysiloxane elastomer-forming compositions and articles made therefrom - Google Patents
Organopolysiloxane elastomer-forming compositions and articles made therefromInfo
- Publication number
- GB957108A GB957108A GB4140161A GB4140161A GB957108A GB 957108 A GB957108 A GB 957108A GB 4140161 A GB4140161 A GB 4140161A GB 4140161 A GB4140161 A GB 4140161A GB 957108 A GB957108 A GB 957108A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pts
- parts
- particle size
- surface area
- butyl
- 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
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
A rubber-forming composition comprises, by weight, 100 pts. of an elastomer-forming organopolysiloxane having from 1.98 to 2.05 organic radicals per Si atom, at least a minor proportion of the radicals being unsaturated radicals, and of viscosity from 5X106 to 125X106 cs. at 20 DEG C., 25 to 100 pts. of a furnace black of particle size from 15 to 1000 m .m and of surface area from 1 to 200 m2/g, or an acetylene black of particle size from 40 to 55 m m and of surface area from 40 to 70 m2/g, 10 to 20 pts. of one or more other fillers, 0 to 10 pts. of a structure control additive and 0.25 to 10 pts. of an organic peroxide selected from di-t-butyl-, di-cumyl- and t-butylcumyl-peroxides, 2:5-bis(t-butyl-peroxy)-2:5 dimethylhexane and 2:5-bis(t-butyl-peroxy)-2:5-dimethylhexyne-3. Fillers specified are silica (aerogel, precipitated, fume and natural), alumina, lithopone, calcium carbonate and talc with or without surface treatment with silanes or siloxanes. Structure control additives specified are (tetramethylelthylenedioxy)- dimethylsilane, -diethyl-silane, -diphenylsilane and -methylphenyl-silane, pinacolmono- and pinacolbis-trimethyl-silylethers, diphenylsilanediol and diphenyldi-methoxy- and diphenyldiethoxy-silanes. The compositions may be shaped and heat cured, or dispersed in solvents and applied as coatings on to suitable fabrics (see Division B2). In a typical example (1) methylvinylsiloxane, furnace black, fume silica (tetramethylethylenedioxy) - dimethyl silane and dicumylperoxide blended with CaCO3, were compounded, pressed into a sheet and heat-cured under pressure. Uses: for making heating elements, e.g. in heating jackets for industrial or scientific equipment, electric blankets and heating panels.ALSO:In making heating elements, e.g. in heating jackets for industrial and scientific equipment, electric blankets and heating panels, a substrate, e.g. of glass cloth or cotton, is coated in known manner with a dispersion in an organic solvent of a composition comprising, by weight, 100 parts of an elastomer-forming siloxane of viscosity from 5 x 106 to 125 x 106 cs. at 20 DEG C., 25 to 100 parts of a furnace black of particle size from 15 to 1000m m and of surface area from 1 to 200 m.2/g., or an acetylene black of particle size from 40 to 55m m and of surface area from 40 to 70 m.2/g., 10 to 20 parts of one or more other fillers, 0 to 10 parts of a structure control additive and 0,25-10 parts of a certain organic peroxide (see Division C3). Examples 4 and 6 to 12 describe the coating of glass cloth with the above composition.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4140161A GB957108A (en) | 1961-11-20 | 1961-11-20 | Organopolysiloxane elastomer-forming compositions and articles made therefrom |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4140161A GB957108A (en) | 1961-11-20 | 1961-11-20 | Organopolysiloxane elastomer-forming compositions and articles made therefrom |
Publications (1)
Publication Number | Publication Date |
---|---|
GB957108A true GB957108A (en) | 1964-05-06 |
Family
ID=10419524
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4140161A Expired GB957108A (en) | 1961-11-20 | 1961-11-20 | Organopolysiloxane elastomer-forming compositions and articles made therefrom |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB957108A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3328340A (en) * | 1963-09-09 | 1967-06-27 | Gen Electric | Organopolysiloxane composition of reduced structure |
US4062813A (en) * | 1974-02-28 | 1977-12-13 | Andrianov Kuzma A | Semiconductor material |
EP0057084A2 (en) * | 1981-01-26 | 1982-08-04 | Dow Corning Corporation | Method of improving heat stability of pigmentable silicone elastomer |
US4382024A (en) * | 1977-05-18 | 1983-05-03 | Hotfoil Limited | Electrically conductive rubber |
EP0524026A2 (en) * | 1991-07-18 | 1993-01-20 | Shin-Etsu Chemical Co., Ltd. | Conductive silicone rubber composition and conductive silicone rubber |
WO2004054927A1 (en) * | 2002-12-18 | 2004-07-01 | Degussa Ag | Surface-modified, aerogel-type, structured silica |
-
1961
- 1961-11-20 GB GB4140161A patent/GB957108A/en not_active Expired
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3328340A (en) * | 1963-09-09 | 1967-06-27 | Gen Electric | Organopolysiloxane composition of reduced structure |
US4062813A (en) * | 1974-02-28 | 1977-12-13 | Andrianov Kuzma A | Semiconductor material |
US4382024A (en) * | 1977-05-18 | 1983-05-03 | Hotfoil Limited | Electrically conductive rubber |
EP0057084A2 (en) * | 1981-01-26 | 1982-08-04 | Dow Corning Corporation | Method of improving heat stability of pigmentable silicone elastomer |
EP0057084A3 (en) * | 1981-01-26 | 1982-08-25 | Dow Corning Corporation | Method of improving heat stability of pigmentable silicone elastomer |
EP0524026A2 (en) * | 1991-07-18 | 1993-01-20 | Shin-Etsu Chemical Co., Ltd. | Conductive silicone rubber composition and conductive silicone rubber |
EP0524026A3 (en) * | 1991-07-18 | 1993-03-03 | Shin-Etsu Chemical Co., Ltd. | Conductive silicone rubber composition and conductive silicone rubber |
US5436288A (en) * | 1991-07-18 | 1995-07-25 | Shin-Etsu Chemical Co., Ltd. | Conductive silicone rubber composition and conductive silicone rubber |
WO2004054927A1 (en) * | 2002-12-18 | 2004-07-01 | Degussa Ag | Surface-modified, aerogel-type, structured silica |
US7402293B2 (en) | 2002-12-18 | 2008-07-22 | Degussa Ag | Surface-modified, aerogel-type structured silica |
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