GB630911A - Improvements in and relating to liquid compositions - Google Patents
Improvements in and relating to liquid compositionsInfo
- Publication number
- GB630911A GB630911A GB7702/47A GB770247A GB630911A GB 630911 A GB630911 A GB 630911A GB 7702/47 A GB7702/47 A GB 7702/47A GB 770247 A GB770247 A GB 770247A GB 630911 A GB630911 A GB 630911A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mixture
- methyldichlorosilane
- oil
- hcl
- formula
- 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
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M107/00—Lubricating compositions characterised by the base-material being a macromolecular compound
- C10M107/50—Lubricating compositions characterised by the base-material being a macromolecular compound containing silicon
-
- 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
- C08G77/12—Polysiloxanes containing silicon bound to hydrogen
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
- C10M2229/04—Siloxanes with specific structure
- C10M2229/041—Siloxanes with specific structure containing aliphatic substituents
- C10M2229/0415—Siloxanes with specific structure containing aliphatic substituents used as base material
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/02—Pour-point; Viscosity index
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/08—Hydraulic fluids, e.g. brake-fluids
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Silicon Polymers (AREA)
Abstract
Liquids suitable for use as lubricants are obtained by hydrolysing by concentrated aqueous HCl, a mixture of trimethylchlorosilane and methyldichlorosilane in the proportions of 0.40-0.46 mols. of the former to 1 mol. of the latter to obtain linear methyl polysiloxanes of the general formula <FORM:0630911/IV (a)/1> where n is an integer of average value of at least 5, e.g. up to 500, separating the oily phase from the aqueous acid phase and purifying the oil obtained. The corresponding bromosilanes may replace the chlorosilanes. The oil may be used in admixture with (1) liquid cyclic methylpolysiloxane of the formula [(CH3)2SiO]x where x is a whole number greater than 10; (2) a liquid mixture of polysiloxanes of formula (CH3)2a+2SiaOa-1 where a is at least 3, as described in Specification 586,187. In examples: (1) a mixture of 115 g. methyldichlorosilane and 2.5 g. trimethchlorosilane is run into 250 cc. cold concentrated HCl and stirring was continued for 2 hours at 1-6 DEG C., whereupon the oily layer was separated, washed, centrifuged and filtered to give an oil of 108 centistokes viscosity at 100 DEG F.; (2) describes similar treatment of a mixture of 0.70 mole methyldichlorosilane and 0.043 mole trimethyl chlorosilane and 35 cc. conc. HCl (35 per cent).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US630911XA | 1946-03-21 | 1946-03-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB630911A true GB630911A (en) | 1949-10-24 |
Family
ID=22046863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB7702/47A Expired GB630911A (en) | 1946-03-21 | 1947-03-20 | Improvements in and relating to liquid compositions |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB630911A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0259625A1 (en) * | 1986-08-21 | 1988-03-16 | Bayer Ag | Organopolysiloxane oils |
-
1947
- 1947-03-20 GB GB7702/47A patent/GB630911A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0259625A1 (en) * | 1986-08-21 | 1988-03-16 | Bayer Ag | Organopolysiloxane oils |
| US4831169A (en) * | 1986-08-21 | 1989-05-16 | Bayer Aktiengesellschaft | Organopolysiloxane oils |
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