GB832487A - Organosiloxanes - Google Patents
OrganosiloxanesInfo
- Publication number
- GB832487A GB832487A GB8130/57A GB813057A GB832487A GB 832487 A GB832487 A GB 832487A GB 8130/57 A GB8130/57 A GB 8130/57A GB 813057 A GB813057 A GB 813057A GB 832487 A GB832487 A GB 832487A
- Authority
- GB
- United Kingdom
- Prior art keywords
- prepared
- preparation
- trimer
- formula
- temperatures
- 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 1
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 abstract 2
- 238000002360 preparation method Methods 0.000 abstract 2
- 239000013638 trimer Substances 0.000 abstract 2
- 239000005046 Chlorosilane Substances 0.000 abstract 1
- 150000008044 alkali metal hydroxides Chemical class 0.000 abstract 1
- 125000004432 carbon atom Chemical group C* 0.000 abstract 1
- 239000003054 catalyst Substances 0.000 abstract 1
- KOPOQZFJUQMUML-UHFFFAOYSA-N chlorosilane Chemical class Cl[SiH3] KOPOQZFJUQMUML-UHFFFAOYSA-N 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 abstract 1
- 238000005336 cracking Methods 0.000 abstract 1
- 125000004122 cyclic group Chemical group 0.000 abstract 1
- KTQYJQFGNYHXMB-UHFFFAOYSA-N dichloro(methyl)silicon Chemical compound C[Si](Cl)Cl KTQYJQFGNYHXMB-UHFFFAOYSA-N 0.000 abstract 1
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 abstract 1
- 229920001971 elastomer Polymers 0.000 abstract 1
- 239000000806 elastomer Substances 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 239000000413 hydrolysate Substances 0.000 abstract 1
- 230000003301 hydrolyzing effect Effects 0.000 abstract 1
- 239000000314 lubricant Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 239000005048 methyldichlorosilane Substances 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 239000012299 nitrogen atmosphere Substances 0.000 abstract 1
- -1 perfluoroalkyl cyclotrisiloxanes Chemical class 0.000 abstract 1
- 150000002978 peroxides Chemical class 0.000 abstract 1
- 229910052697 platinum Inorganic materials 0.000 abstract 1
- 229920000642 polymer Polymers 0.000 abstract 1
- 150000003839 salts Chemical class 0.000 abstract 1
- 150000004756 silanes Chemical class 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
- C08G77/22—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen and oxygen
- C08G77/24—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen and oxygen halogen-containing groups
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic Table
- C07F7/02—Silicon compounds
- C07F7/08—Compounds having one or more C—Si linkages
- C07F7/0834—Compounds having one or more O-Si linkage
- C07F7/0838—Compounds with one or more Si-O-Si sequences
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic Table
- C07F7/02—Silicon compounds
- C07F7/21—Cyclic compounds having at least one ring containing silicon, but no carbon in the ring
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Silicon Polymers (AREA)
Abstract
The invention comprises perfluoroalkyl cyclotrisiloxanes of the formula <FORM:0832487/IV (a)/1> where R is a perfluoralkyl radical containing 1 to 10 carbon atoms. They are prepared by hydrolysing the chlorosilanes RCH2CH2Si(Me) Cl2 in the usual manner and heating the hydrolysate with an alkali metal hydroxide or salt of a siloxane under conditions which cause the cyclic trimer to distil from the mixture. Alternatively, when the trimer is crystalline, the conditions are such as to remove the volatile materials, and the distillate is crystallized. The cracking is generally effected at 200 DEG to 400 DEG C., at atmospheric or reduced temperature; at the higher temperatures, a nitrogen atmosphere is preferably employed. The comounds are useful as lubricants and for the preparation of high polymers and elastomers as described in Specifications 832,488 and 832,489. The examples describe the preparation of compounds of the above formula where R=CF3, C2F5 and C3F7. Perfluoroalkyldichloromethyl silanes are prepared by reacting an alkylene RCH=CH2 (R is as above) with methyldichlorosilane in the presence of a peroxide or platinum catalyst at temperatures of 150 DEG to 300 DEG C.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US594108A US2979519A (en) | 1956-06-27 | 1956-06-27 | New cyclotrisiloxanes |
| US834711XA | 1956-09-10 | 1956-09-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB832487A true GB832487A (en) | 1960-04-13 |
Family
ID=26769343
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8130/57A Expired GB832487A (en) | 1956-06-27 | 1957-03-12 | Organosiloxanes |
| GB27930/57A Expired GB834711A (en) | 1956-06-27 | 1957-09-04 | Improvements in or relating to organosiloxanes |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB27930/57A Expired GB834711A (en) | 1956-06-27 | 1957-09-04 | Improvements in or relating to organosiloxanes |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE1044814B (en) |
| FR (2) | FR1176236A (en) |
| GB (2) | GB832487A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5241097A (en) * | 1992-12-21 | 1993-08-31 | Allied-Signal Inc. | Process for the preparation of cyclic siloxane |
-
1957
- 1957-03-12 GB GB8130/57A patent/GB832487A/en not_active Expired
- 1957-05-27 FR FR1176236D patent/FR1176236A/en not_active Expired
- 1957-06-26 DE DED25858A patent/DE1044814B/en active Pending
- 1957-09-04 GB GB27930/57A patent/GB834711A/en not_active Expired
- 1957-09-09 FR FR1182154D patent/FR1182154A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1176236A (en) | 1959-04-08 |
| DE1044814B (en) | 1958-11-27 |
| FR1182154A (en) | 1959-06-23 |
| GB834711A (en) | 1960-05-11 |
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