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US 5,382,718 AGranted
Cyclofluoroalkylated fullerene compounds
AssigneeE. I. Du Pont de Nemours and Company
InventorsPaul G. Bekiarian, Paul J. Fagan, Paul J. Krusic
Life of this patent
Estimating the term…
Abstract
Mixtures of cyclofluoroalkylated fullerenes are provided by the thermal 2+2 cycloaddition of fluoroalkenes to a solution or slurry of a fullerene. The cyclofluoroalkylated fullerene mixtures are useful as lubricants or additives to lubricants; in fluorocarbon and/or chlorofluorocarbon based cooling systems; in adhesives for fluorocarbon based polymers and in gas separation membranes.
Claims7
A mixture of cyclofluoroalkylated fullerene compounds of formula (I)
- (C.sub.60+2n) (CF.sub.2 CR.sup.1 R.sup.2) .sub.w R.sup.3.sub.x R.sup.4.sub.y R.sup.5 z I
- wherein:
- R.sup.1 and R.sup.2 are independently H, F, Cl, Br, CN, a branched or straight chain alkyl, alkylether, alkoxy, alkoxyether, fluoro-alkyl, fluoroalkylether, fluoroalkoxy, fluoroalkoxyether, aryl, aryloxy, fluoro-aryl, or fluoroaryloxy group;
- optionally substituted with one or more H, Cl, Br, carbinol, carboxylic acid ester, carboxylic acid halide, sulfonyl fluoride, or carbonitrile;
- R.sup.3 is F or a branched or straight chain fluoroalkyl or fluoroalkylether group;
- R.sup.4 is a branched or straight chain hydrocarbon alkyl or alkyl ether or aromatic hydrocarbon;
- R.sup.5 is independently one or more selected from H, F and Cl;
- n is an integer from 0 to about 470;
- w is an integer from 1 to 16+(n/2) for n=an even integer, or from 1 to 16+((n+1)/2) for n=an odd integer;
- x is an integer from 0 to about 24+n;
- y is an integer from 0 to about 24+n;
- z is an integer from 0 to about 35+n.
9 more elements
Dependencies are inferred from the claim text.