Fluorine containing organosilicon compounds
AssigneeE. I. Du Pont de Nemours and Company
InventorDavid Apotheker
Life of this patent
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Abstract
Addition to organosilicon compounds having at least one alkyl group attached to a silicon atom, at least one hydrogen atom being attached to the carbon atom adjacent the silicon atom, of a fluorocompound, which may be a fluoroolefin, a perfluoroketone, or a perfluoroether having a carbon-carbon double bond in .alpha.-position to the ether oxygen atom, give fluorine-containing organosilicon compounds. These adducts may be liquid or solid and are useful as (1) lubricants and sealants for automotive and aerospace industries (2) fire-resistant hydraulic fluids, and (3) siloxane elastomers having good oil and lubricant resistance.
Claims4
A fluorine-containing organosilicon compound made by the addition to an organosilicon compound having at least one alkyl group attached to a silicon atom, at least one hydrogen atom being bonded to the carbon atom adjacent the silicon atom, of a fluorocompound selected from the class consisting of the following:
- (A) fluoroolefins having one of the following formulas (1), (2), and (3):
- ##STR12## (B) ketones having the following formula (4):
- ##STR13## and (C) ethers having the following formula (5) ##STR14## where Each R.sub.f independently is a C.sub.1 -C.sub.8 saturated perfluoroalkyl;
- R'.sub.f is Br or R.sub.f ;
- R".sub.f is R.sub.f or a radical obtained by removing one fluorine atom from a perfluoroalkyl ether;
- and
- m in formula (3) is an integer of 2 to 12.
Dependencies are inferred from the claim text.