GB945580A - Improvements in or relating to organosiloxanes - Google Patents
Improvements in or relating to organosiloxanesInfo
- Publication number
- GB945580A GB945580A GB550662A GB550662A GB945580A GB 945580 A GB945580 A GB 945580A GB 550662 A GB550662 A GB 550662A GB 550662 A GB550662 A GB 550662A GB 945580 A GB945580 A GB 945580A
- Authority
- GB
- United Kingdom
- Prior art keywords
- radicals
- mol
- copolymer
- units
- methyl
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/46—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes silicones
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
A composition curable to a transparent encapsulating material consists essentially of (1) an essentially linear siloxane of the general formula R2R11SiO(R12SiO)n SiR2R11, if desired containing up to 1% mol of RSiO1.5 units, in which each R and each R1 is a monovalent hydrocarbon radical free from aliphatic unsaturation, at least 85% mol of the R1 radicals being methyl and R11 is an alkenyl radical, in which siloxane (1) n has a value such that its viscosity is from 500 to 10,000 cs. at 25 DEG C., (2) from 20 to 50% by wt., calculated on the weight of (1) and (2), of a copolymer of SiO2, (CH3)3SiO0.5 and (CH3)2R11SiO0.5 units in which copolymer there is from 1.5 to 3.5% by wt. of alkenyl radicals and in which copolymer the ratio of the total (CH3)3SiO0.5 and (CH3)2R11SiO0.5 units to SiO2 units is from 0.6:1 to 1:1, (3) a compound compatible with (1) and (2) which is a siloxane containing from 0.4 to 1.4% by wt. of Si-bonded H atoms, the remaining valencies of the Si atoms being satisfied by phenyl and/or methyl radicals, there being at least 3 Si-bonded H atoms per mol, and in (3) any hydrocarbon radicals attached to SiH silicon are essentially all methyl radicals, the amount of (3) being such that there is from 0.75 mols of SiH per mol of alkenyl radicals in (1) and (2) to 1.5 mol of SiH per mol of alkenyl radicals in (1) and (2), and (4) a platinum catalyst. Conventional fillers may be added when optical clavity is not desirzd. The compositions are best cured by heating at 100 DEG to 200 DEG C. In a typical example (1), a mixture of (1) a liquid siloxane of the formula Ph.Me.ViSiO(Me2SiO)n SiPh.Me.Vi (Me = methyl, Ph = phenyl, Vi = vinyl) and (2) a copolymer of SiO2, Me3SiO0.5 and Me2 ViSiO0.5, was mixed with (3) PhSi(OSiMe2H)3 and (4) chloroplatinic acid; a portion of resulting mixture was cast into a slab and heat cured, and another portion was used to pot an electronic printed circuit. Specification 706,719 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US9414261A | 1961-03-08 | 1961-03-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB945580A true GB945580A (en) | 1964-01-02 |
Family
ID=22243385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB550662A Expired GB945580A (en) | 1961-03-08 | 1962-02-13 | Improvements in or relating to organosiloxanes |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE614771A (en) |
| CH (1) | CH485801A (en) |
| GB (1) | GB945580A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2548677A1 (en) * | 1983-07-07 | 1985-01-11 | Gen Electric | INSALISSABLE CURABLE SILICONES COATING COMPOSITION, PROCESS FOR PREPARING SAME, PROCESS FOR MAKING INSALIZABLE SUBSTRATES, MEMBRANE ROOFING STRUCTURE, AND PROCESS FOR PREPARING THE SAME |
| GB2196638A (en) * | 1986-09-22 | 1988-05-05 | Gen Electric | Vinyl polysiloxane liquid injection molding composition |
| US4991574A (en) * | 1987-07-22 | 1991-02-12 | Dow Corning Corporation | Surgical dressing |
| EP0867575A2 (en) | 1997-03-25 | 1998-09-30 | Dow Corning S.A. | A method of making a building element |
| US5928724A (en) * | 1998-03-25 | 1999-07-27 | Dow Corning S.A. | Method of making a building element |
| US8101042B2 (en) | 2003-11-13 | 2012-01-24 | Dow Corning Corporation | Method for adhering silicone gels to plastics |
| US11116929B2 (en) | 2018-03-12 | 2021-09-14 | 3B Medical, Inc. | Pediatric CPAP mask |
| US11565069B2 (en) | 2017-10-09 | 2023-01-31 | 3B Medical, Inc. | Mask with adhesive and method of making the same |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3425967A (en) * | 1965-12-17 | 1969-02-04 | Gen Electric | Foamable organopolysiloxane composition and foamed product obtained therefrom |
-
1961
- 1961-11-06 CH CH1285061A patent/CH485801A/en not_active IP Right Cessation
-
1962
- 1962-02-13 GB GB550662A patent/GB945580A/en not_active Expired
- 1962-03-07 BE BE614771A patent/BE614771A/en unknown
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2548677A1 (en) * | 1983-07-07 | 1985-01-11 | Gen Electric | INSALISSABLE CURABLE SILICONES COATING COMPOSITION, PROCESS FOR PREPARING SAME, PROCESS FOR MAKING INSALIZABLE SUBSTRATES, MEMBRANE ROOFING STRUCTURE, AND PROCESS FOR PREPARING THE SAME |
| GB2142924A (en) * | 1983-07-07 | 1985-01-30 | Gen Electric | Transparent membrane structures |
| GB2196638A (en) * | 1986-09-22 | 1988-05-05 | Gen Electric | Vinyl polysiloxane liquid injection molding composition |
| GB2196638B (en) * | 1986-09-22 | 1991-01-16 | Gen Electric | Organopolysiloxane liquid injection molding composition |
| US4991574A (en) * | 1987-07-22 | 1991-02-12 | Dow Corning Corporation | Surgical dressing |
| EP0867575A2 (en) | 1997-03-25 | 1998-09-30 | Dow Corning S.A. | A method of making a building element |
| US5928724A (en) * | 1998-03-25 | 1999-07-27 | Dow Corning S.A. | Method of making a building element |
| US8101042B2 (en) | 2003-11-13 | 2012-01-24 | Dow Corning Corporation | Method for adhering silicone gels to plastics |
| US11565069B2 (en) | 2017-10-09 | 2023-01-31 | 3B Medical, Inc. | Mask with adhesive and method of making the same |
| US11116929B2 (en) | 2018-03-12 | 2021-09-14 | 3B Medical, Inc. | Pediatric CPAP mask |
Also Published As
| Publication number | Publication date |
|---|---|
| CH485801A (en) | 1970-02-15 |
| BE614771A (en) | 1962-09-02 |
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