GB944028A - Heatproof insulating material - Google Patents
Heatproof insulating materialInfo
- Publication number
- GB944028A GB944028A GB367061A GB367061A GB944028A GB 944028 A GB944028 A GB 944028A GB 367061 A GB367061 A GB 367061A GB 367061 A GB367061 A GB 367061A GB 944028 A GB944028 A GB 944028A
- Authority
- GB
- United Kingdom
- Prior art keywords
- peroxide
- polycarbonate
- organosiloxane
- breakdown temperature
- insulating material
- 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
- C08G77/42—Block-or graft-polymers containing polysiloxane sequences
- C08G77/445—Block-or graft-polymers containing polysiloxane sequences containing polyester sequences
- C08G77/448—Block-or graft-polymers containing polysiloxane sequences containing polyester sequences containing polycarbonate sequences
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L69/00—Compositions of polycarbonates; Compositions of derivatives of polycarbonates
-
- 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
- C08G77/06—Preparatory processes
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Silicon Polymers (AREA)
Abstract
Silicone rubbers are produced by copolymerizing an organosiloxane with an organic polycarbonate of the formula: <FORM:0944028/C3/1> where n is in the range 10 to 17, by means of a di-t-alkyl peroxide catalyst which is only active at temperatures above 150 DEG C. By the addition of inhibitors and softeners the breakdown temperature of the peroxide can be made to approximate to the softening point of the polycarbonate. A peroxide (e.g. benzoyl peroxide) with a breakdown temperature below 150 DEG C. may be incorporated to partially cross link the organosiloxane before it is copolymerized with the polycarbonate. In the example a silicone rubber is prepared from an unpolymerized methyl siloxane, a polycarbonate of the above formula (n=15) di-t-butyl peroxide, henzoyl peroxide, a mineral oil plasticizer having a high naphthalene content, hydroquinone (an inhibitor) and kaolin.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB367061A GB944028A (en) | 1961-01-31 | 1961-01-31 | Heatproof insulating material |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB367061A GB944028A (en) | 1961-01-31 | 1961-01-31 | Heatproof insulating material |
Publications (1)
Publication Number | Publication Date |
---|---|
GB944028A true GB944028A (en) | 1963-12-11 |
Family
ID=9762730
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB367061A Expired GB944028A (en) | 1961-01-31 | 1961-01-31 | Heatproof insulating material |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB944028A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1595790A1 (en) * | 1966-01-03 | 1970-02-12 | Gen Electric | Organopolysiloxane, polycarbonate copolymers and processes for their preparation |
-
1961
- 1961-01-31 GB GB367061A patent/GB944028A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1595790A1 (en) * | 1966-01-03 | 1970-02-12 | Gen Electric | Organopolysiloxane, polycarbonate copolymers and processes for their preparation |
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