GB793594A - Vulcanisable compositions - Google Patents
Vulcanisable compositionsInfo
- Publication number
- GB793594A GB793594A GB21748/56A GB2174856A GB793594A GB 793594 A GB793594 A GB 793594A GB 21748/56 A GB21748/56 A GB 21748/56A GB 2174856 A GB2174856 A GB 2174856A GB 793594 A GB793594 A GB 793594A
- Authority
- GB
- United Kingdom
- Prior art keywords
- parts
- saturated
- per
- siloxane
- phenyl
- 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
- C08K5/00—Use of organic ingredients
- C08K5/36—Sulfur-, selenium-, or tellurium-containing compounds
- C08K5/39—Thiocarbamic acids; Derivatives thereof, e.g. dithiocarbamates
-
- 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
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
- C08K9/06—Ingredients treated with organic substances with silicon-containing compounds
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
Vulcanizable compositions consist essentially of (a) one or more polysiloxanes having a viscosity of at least 10,000 cs. at 25 DEG C. and having an average of from 1.9 to 2 saturated aliphatic, saturated cycloaliphatic or aryl hydrocarbon radicals per silicon atom; (b) from 20 to 60 parts by weight per 100 parts of siloxane of a silica filler, the surface of which is saturated with <FORM:0793594/IV (a)/1> units in which n has an average value from 2 to 3 inclusive, the units being attached to silicon through Si.O.Si linkages; and (c) from 0.5 to 10 parts (by weight) per 100 parts of siloxane of a vulcanizing agent which is a thiuram disulphide or a polyvalent metal salt of a dialkyldithiocarbamic acid. Vulcanization is effected by heating preferably at temperatures from 110 DEG to 250 DEG C. Ingredients specified are (a) siloxanes containing methyl, ethyl, propyl, octadecyl, cyclohexyl, cyclopentyl, phenyl, xylyl or naphthyl radicals; (b) fillers made treating a finely-divided silica aerogel or fume silica with a chlorosilane or by the method of Specification 783,868; (c) vulcanizing agents:-tetramethyl-, tetraoctadecyl-and di-n-pentamethylene-thiuram disulphides and dithiocarbamates of the general formula <FORM:0793594/IV (a)/2> where Y is a monovalent hydrocarbon radical, e.g. methyl, ethyl, butyl, benzyl and phenyl, M is a polyvalent metal, e.g. zinc, lead, copper, bismuth, selenium and tellurium and x is at least 2 and equal to the valency of M. Pigments, compression set additives, &c., may also be added. The vulcanized compositions are useful for electrical insulation and gaskets. Specification 781,278 also is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US793594XA | 1955-09-22 | 1955-09-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB793594A true GB793594A (en) | 1958-04-16 |
Family
ID=22150029
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB21748/56A Expired GB793594A (en) | 1955-09-22 | 1956-07-13 | Vulcanisable compositions |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB793594A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1138928B (en) * | 1958-09-22 | 1962-10-31 | Ici Ltd | Process for the production of multilayer molded articles |
DE1146252B (en) * | 1958-05-28 | 1963-03-28 | Gen Electric | Process for the production of filled elastomeric moldings from organopolysiloxane molding compounds |
FR2487324A1 (en) * | 1980-07-24 | 1982-01-29 | Sumitomo Chemical Co | |
FR2550541A1 (en) * | 1983-08-12 | 1985-02-15 | Rhone Poulenc Spec Chim | MICROORGANISM-RESISTANT ORGANOPOLYSILOXANIC COMPOSITIONS |
US7402293B2 (en) | 2002-12-18 | 2008-07-22 | Degussa Ag | Surface-modified, aerogel-type structured silica |
-
1956
- 1956-07-13 GB GB21748/56A patent/GB793594A/en not_active Expired
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1146252B (en) * | 1958-05-28 | 1963-03-28 | Gen Electric | Process for the production of filled elastomeric moldings from organopolysiloxane molding compounds |
DE1138928B (en) * | 1958-09-22 | 1962-10-31 | Ici Ltd | Process for the production of multilayer molded articles |
FR2487324A1 (en) * | 1980-07-24 | 1982-01-29 | Sumitomo Chemical Co | |
FR2550541A1 (en) * | 1983-08-12 | 1985-02-15 | Rhone Poulenc Spec Chim | MICROORGANISM-RESISTANT ORGANOPOLYSILOXANIC COMPOSITIONS |
EP0141685A1 (en) * | 1983-08-12 | 1985-05-15 | Rhone-Poulenc Specialites Chimiques | One-component organopolysiloxane compositions resistant to microorganisms |
JPS60115660A (en) * | 1983-08-12 | 1985-06-22 | ロ−ヌ−プ−ラン・スペシアリテ・シミ−ク | Microbe tolerence monocomponent organopolysiloxane composition |
US7402293B2 (en) | 2002-12-18 | 2008-07-22 | Degussa Ag | Surface-modified, aerogel-type structured silica |
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