Tetrahydrocarbyl phosphonium salts
AssigneeThe Dow Chemical Company
InventorsGeorge A. Doorakian, Joseph W. Hanafin
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Abstract
Novel advanced epoxy resins are prepared using phosphine or phosphonium salt initiators bearing at least one hydroxyphenyl or thiophenyl groups. These phosphonium salt initiators are novel compositions of matter. The resulting resins contain reduced quantities of extractable phosphorus containing moieties.
Claims4
A compound corresponding to the formula ##STR35## wherein R and R.sup.2 are each independently phenyl or hydroxyphenyl R.sup.1 is a C.sub.1 to C.sub.4 alkyl and X.sup..crclbar. is fluoride, bromide, chloride, iodide, carboxylate, bicarbonate, biphosphate, phenate or bisphenate.
A compound corresponding to the formula ##STR36## wherein R and R.sup.2 are each phenyl or hydroxyphenyl R.sup.1 is phenyl or C.sub.1 to C.sub.4 alkyl A is a trivalent alkane radical having from one to 12 carbon atoms and X.sup..crclbar. is fluoride, bromide, chloride, iodide, carboxylate, bicarbonate, biphosphate, phenate or bisphenate.
A compound corresponding to the formula ##STR37## wherein m is an integer from 1 to 3.
Dependencies are inferred from the claim text.