GB643018A - Improvements in polymerisation of organo-siloxanes - Google Patents
Improvements in polymerisation of organo-siloxanesInfo
- Publication number
- GB643018A GB643018A GB6065/47A GB606547A GB643018A GB 643018 A GB643018 A GB 643018A GB 6065/47 A GB6065/47 A GB 6065/47A GB 606547 A GB606547 A GB 606547A GB 643018 A GB643018 A GB 643018A
- Authority
- GB
- United Kingdom
- Prior art keywords
- siloxanes
- perbenzoate
- fabric
- methyl
- silicon
- 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
- 125000005375 organosiloxane group Chemical group 0.000 title abstract 2
- 239000004744 fabric Substances 0.000 abstract 6
- -1 siloxanes Chemical class 0.000 abstract 5
- 239000000945 filler Substances 0.000 abstract 4
- 238000006243 chemical reaction Methods 0.000 abstract 3
- 239000011521 glass Substances 0.000 abstract 3
- 238000010438 heat treatment Methods 0.000 abstract 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 abstract 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 abstract 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 abstract 2
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 abstract 2
- 238000006116 polymerization reaction Methods 0.000 abstract 2
- 239000007787 solid Substances 0.000 abstract 2
- GJBRNHKUVLOCEB-UHFFFAOYSA-N tert-butyl benzenecarboperoxoate Chemical compound CC(C)(C)OOC(=O)C1=CC=CC=C1 GJBRNHKUVLOCEB-UHFFFAOYSA-N 0.000 abstract 2
- 239000004342 Benzoyl peroxide Substances 0.000 abstract 1
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 abstract 1
- DCERHCFNWRGHLK-UHFFFAOYSA-N C[Si](C)C Chemical class C[Si](C)C DCERHCFNWRGHLK-UHFFFAOYSA-N 0.000 abstract 1
- 239000004215 Carbon black (E152) Substances 0.000 abstract 1
- 102000006835 Lamins Human genes 0.000 abstract 1
- 108010047294 Lamins Proteins 0.000 abstract 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract 1
- 239000010425 asbestos Substances 0.000 abstract 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 1
- 235000019400 benzoyl peroxide Nutrition 0.000 abstract 1
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 abstract 1
- 238000009835 boiling Methods 0.000 abstract 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 abstract 1
- 125000004432 carbon atom Chemical group C* 0.000 abstract 1
- 239000006229 carbon black Substances 0.000 abstract 1
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract 1
- 239000001569 carbon dioxide Substances 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 238000000354 decomposition reaction Methods 0.000 abstract 1
- JZZIHCLFHIXETF-UHFFFAOYSA-N dimethylsilicon Chemical class C[Si]C JZZIHCLFHIXETF-UHFFFAOYSA-N 0.000 abstract 1
- 238000005187 foaming Methods 0.000 abstract 1
- 239000000499 gel Substances 0.000 abstract 1
- 239000003365 glass fiber Substances 0.000 abstract 1
- 229930195733 hydrocarbon Natural products 0.000 abstract 1
- 238000011065 in-situ storage Methods 0.000 abstract 1
- 239000012442 inert solvent Substances 0.000 abstract 1
- 210000005053 lamin Anatomy 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 abstract 1
- 229910052760 oxygen Inorganic materials 0.000 abstract 1
- 239000001301 oxygen Substances 0.000 abstract 1
- 229920000642 polymer Polymers 0.000 abstract 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 abstract 1
- 229910052895 riebeckite Inorganic materials 0.000 abstract 1
- 229910052710 silicon Inorganic materials 0.000 abstract 1
- 239000010703 silicon Substances 0.000 abstract 1
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Chemical group [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 abstract 1
- 238000004073 vulcanization Methods 0.000 abstract 1
- 239000011787 zinc oxide Substances 0.000 abstract 1
Classifications
-
- 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
- C08G77/08—Preparatory processes characterised by the catalysts used
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C25/00—Surface treatment of fibres or filaments made from glass, minerals or slags
- C03C25/10—Coating
- C03C25/24—Coatings containing organic materials
- C03C25/40—Organo-silicon compounds
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/30—Compounds having one or more carbon-to-metal or carbon-to-silicon linkages ; Other silicon-containing organic compounds; Boron-organic compounds
- C04B26/32—Compounds having one or more carbon-to-metal or carbon-to-silicon linkages ; Other silicon-containing organic compounds; Boron-organic compounds containing silicon
-
- 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
- C08K5/04—Oxygen-containing compounds
- C08K5/14—Peroxides
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Structural Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Resistance Heating (AREA)
- Surface Heating Bodies (AREA)
Abstract
Organo-siloxanes containing alkyl radicals of not more than four carbon atoms with or without phenyl radicals, the ratio of hydrocarbon radicals to silicon atoms being 1.75 : 2.25, and at least 75 mol. per cent of the silicon oxide units being of the formula RR1SiO, when R and R1 are both alkyl radicals, are polymerized by heating with tertiary butyl perbenzoate. The products may be liquids, gels, or resinous or rubbery solids. The amount of perbenzoate employed is preferably .01-10 per cent by weight of the siloxane. The temperature is sufficiently above the decomposition temperature of the perbenzoate to produce reasonably rapid but controllable rate of reaction. It is preferably between 125 DEG and 200 DEG C. Unless foaming is desired the perbenzoate is added in successive small portions. The reaction is preferably preformed in the absence of oxygen, e.g. under reduced pressure or in the presence of carbon dioxide. Solid siloxanes may be dissolved in inert solvents boiling above the reaction temperature or may be milled with the perbenzoate. The polymerization may be performed in stages, the first stage being accomplished, if desired, with the aid of benzoyl peroxide. The second stage may be performed in a mould, if desired after admixture with a filler. Alternatively, the filler may be incorporated before the first stage of the polymerization. Suitable fillers are iron oxide, glass, alumina, titania, carbon black or zinc oxide. A table is given showing the change in viscosity produced in various siloxanes by treatment with various quantities of tert.-butyl perbenzoate for 18 hours at 150 DEG C. Examples are also given of the treatment of dimethyl siloxanes. Other siloxanes mentioned are phenyl methyl; phenyl ethyl diethyl; propyl or butyl; siloxanes from mono- and di-methyl silicon compounds with an average ratio of methyl to silicon between 1.75 and 2, or from di-and tri-methyl silicon compounds with a ratio between 2 and 2.25. The rubber-like polymers of the invention may be milled with a filler and a vulcanizing agent and laminated with one or more layers of an inorganic fabric, e.g. glass fabric, or felted glass fibres, or asbestos fabric. Resistance wire may be included in the inorganic fabric or one of the lamin may be of resistance wire cloth to make a heating pad. For a pressure-sensitive electrician's tape a glass fabric may be provided with a single coating of vulcanized elastomeric siloxane in a tacky state. Heating the tape after application completes vulcanization in situ. Specification 630,883 is referred to.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US289995XA | 1946-03-01 | 1946-03-01 | |
| US180346XA | 1946-03-18 | 1946-03-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB643018A true GB643018A (en) | 1950-09-15 |
Family
ID=26690655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB6065/47A Expired GB643018A (en) | 1946-03-01 | 1947-03-03 | Improvements in polymerisation of organo-siloxanes |
Country Status (4)
| Country | Link |
|---|---|
| CH (1) | CH289995A (en) |
| FR (1) | FR942547A (en) |
| GB (1) | GB643018A (en) |
| NL (1) | NL65423C (en) |
-
0
- NL NL65423D patent/NL65423C/xx active
-
1947
- 1947-02-28 CH CH289995D patent/CH289995A/en unknown
- 1947-02-28 FR FR942547D patent/FR942547A/en not_active Expired
- 1947-03-03 GB GB6065/47A patent/GB643018A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH289995A (en) | 1953-04-15 |
| NL65423C (en) | |
| FR942547A (en) | 1949-02-10 |
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