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US 4,069,233 AGranted
Fluoroaliphaticsulfonyl substituted ethylenes substituted by furyl, thenyl, or 1H-pyrrolyl groups
AssigneeMinnesota Mining and Manufacturing Company
InventorRobert J. Koshar
Life of this patent
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Abstract
Fluoroaliphaticsulfonyl substituted ethylenes, useful as catalysts in polymerization of monomers, e.g., epoxide, vinyl ether, and N-vinyl monomers, are prepared by condensation of precursor fluoroaliphaticsulfonyl methanes with aldehydes or N-formyl compounds.
Claims5
A fluoroaliphaticsulfonyl ethylene compound especially suited as a catalyst in epoxide, vinyl ether, and N-vinyl monomer polymerization and having the formula
- wherein R.sub.f is monovalent, saturated fluoroalkyl radical having from 1 to 18 carbon atoms;
- X is a monovalent, nonionic, electron withdrawing radical at least as electron withdrawing as a benzoyl radical selected from the group consisting of a cyano, phenylcarbonyl, alkylcarbonyl, perfluoroalkylcarbonyl of 2 to 18 carbon atoms, phenylsulfonyl, perfluoroalkylsulfonyl of 1-18 carbon atoms, nitro, fluorosulfonyl, or chlorosulfonyl group;
- R is hydrogen, an alkyl group, or a phenyl group;
- R' is the same as R with at least one being hydrogen;
- n is an integer from 0 to 7 depending on Z;
- n is 1 to 7 when Z is 2-furyl;
- n is zero when Z is a monovalent unsaturated, conjugated heterocyclic organic radical selected from the group consisting of furyl, thenyl and 1H-pyrrolyl.
4 more elements
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Dependencies are inferred from the claim text.