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US 4,049,711 AGranted
N-cyanosulfonamides
AssigneeCiba-Geigy Corporation
InventorRaymond J. Kray
Life of this patent
Estimating the term…
Abstract
This invention provides compositions containing polysulfonamides which are prepared by the addition polymerization of bis-N-cyanosulfonamides. The resins are useful in coating, molding, laminating and casting applications.
Claims8
A bis-N-cyanosulfonamide of the formula ##STR18## wherein R' is selected from the group consisting of phenyl, p-chlorophenyl, p-tolyl, 2-naphthyl, 2-anthracenyl, alkyl of 1 to 8 carbon atoms, cyclopentyl, cyclohexyl and trifluoromethyl, and
- R is a divalent radical selected from the group consisting of phenylene, xylylene, diphenylene, naphthylene;
- any of said phenylene, xylylene, diphenylene and naphthylene substituted by chloro, bromo or fluoro groups;
- and ##STR19## wherein n is zero to five and X is oxa, methylene, phenylimido, thio, sulfonyl, carbonyl or 2,2-propylidene.
A bis-N-cyanosulfonamide of the formula ##STR24## wherein R' is phenyl, and
- R is a divalent radical selected from the group consisting of phenylene, xylylene, diphenylene, naphthylene;
- any of said phenylene, xylylene, diphenylene and naphthylene substituted by chloro, bromo or fluoro groups;
- and ##STR25## where X is oxa, methylene, phenylimido, thia, sulfonyl, carbonyl, 2,2-propylidene, ##STR26##
Dependencies are inferred from the claim text.