GB787046A - Improvements in or relating to halophenoxy-siloxanes and halophenoxysilanes - Google Patents
Improvements in or relating to halophenoxy-siloxanes and halophenoxysilanesInfo
- Publication number
- GB787046A GB787046A GB29869/55A GB2986955A GB787046A GB 787046 A GB787046 A GB 787046A GB 29869/55 A GB29869/55 A GB 29869/55A GB 2986955 A GB2986955 A GB 2986955A GB 787046 A GB787046 A GB 787046A
- Authority
- GB
- United Kingdom
- Prior art keywords
- siloxanes
- copolymer
- alkali metal
- metal salts
- silanes
- 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
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
Abstract
Siloxanes and silanes of the unit general formula <FORM:0787046/IV (a)/1> Y is chlorine or bromine, a is an integer from 1 to 5 inclusive, b is 0 or 1, c is an integer from 1 to 5 inclusive and the sum of b+c is not greater than 5, n is 1 or 2, m is 0, 1, 2 or 3 and R is a monovalent hydrocarbon or halogenated aryl hydrocarbon radical, may be made by reacting alkali metal salts of halophenols with halomethylsiloxanes or halomethylsilanes having 1 or 2 halomethyl groups per Si atom, or by reacting alkali metal salts of the above phenols with a siloxane in which only some of the Si atoms have halomethyl groups attached thereto. Reactants specified are (a) alkali metal salts of pentachlorophenol, 2 - chloroxenol, heptachloroxenols, 2.4.5.6 - tetrachlorophenol, 2.4.5-trichlorophenol, tribromophenols, parachlorophenol, 2.4.6 - trichloro - 3.5 - dibromophenol and dichloroxenols, and (b) halomethyl siloxanes and silanes containing as silicon-bonded organic radicals, alkyl, alkenyl, cycloaliphatic, alkaryl, aryl or halogenated aryl radicals. The reaction is preferably effected in solvents, e.g. dimethylformamide, pyridine, ethers, hydrocarbons and acetonitrile and at the reflux temperature of the solvent. The novel siloxanes may be copolymerized in known manner with siloxanes of the general formula <FORM:0787046/IV (a)/2> where R1 is hydrogen or a monovalent hydrocarbon or halogenated hydrocarbon radical. The siloxanes and silanes are useful as lubricants and as additives for lubricants. In examples, the preparations of (1) <FORM:0787046/IV (a)/3> (2) a copolymer of the siloxane of (1) with octamethylcyclotetrasiloxane, (3) tribromophenoxymethylheptamethylcyclotetrasiloxane, (4) a copolymer of dichloroxenoxymethyl-, phenylmethyl- and vinyldimethyl-siloxanes, (5) a copolymer of p-chlorophenoxymethyldimethyl-, dimethyl- and chlorophenylmethylsiloxanes, (6) <FORM:0787046/IV (a)/4> and (7) pentachlorophenoxymethylchlorophenyloctadecylallylsilane are described.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US787046XA | 1954-11-22 | 1954-11-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB787046A true GB787046A (en) | 1957-11-27 |
Family
ID=22145719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB29869/55A Expired GB787046A (en) | 1954-11-22 | 1955-10-19 | Improvements in or relating to halophenoxy-siloxanes and halophenoxysilanes |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB787046A (en) |
-
1955
- 1955-10-19 GB GB29869/55A patent/GB787046A/en not_active Expired
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