Polymeric initiator compounds

A process for preparing a polyester compound of the formula ##STR21## wherein X is an anion with weak nucleophilicity, A, B, and C represent the number of monomer units, wherein C may be zero, R is selected from the group consisting of hydrocarbon groups and alkylene ether groups, and R" is selected from the group consisting of hydrogen, nitro, amide, halide, trimethylsilyl, alkyl groups, and alkoxy groups, which comprises reacting a member selected from the group consisting of thiodiphenol and thiodiphenol derivatives, an optional diol, and a member selected from the group consisting of dicarboxylic acids and dicarboxylic acid derivatives to obtain a precursor polyester, followed by reacting the precursor polyester with a diphenyl iodonium salt in the presence of a catalyst.

A process for preparing polycarbonate compounds of the formula ##STR22## wherein X is an anion with weak nucleophilicity, A, B, and C represent the number of monomer units, wherein C may be zero, R is selected from the group consisting of hydrocarbon groups and alkylene ether groups, and R" is selected from the group consisting of hydrogen, nitro, amide, halide, trimethylsilyl, alkyl groups, and alkoxy groups, which comprises reacting a member selected from the group consisting of thiodiphenols and thiodiphenol derivatives, an optional diol, and a bishaloformate to obtain a precursor polycarbonate, followed by reacting the precursor polycarbonate with a diphenyl iodonium salt in the presence of a catalyst.

A curing process which comprises contacting a curable liquid with a polymeric compound selected from the group consisting of ##STR23## wherein X is an anion with weak nucleophilicity, A, B, and C represent the number of monomer units, wherein C may be zero, R is selected from the group consisting of hydrocarbon groups and alkylene ether groups, and R" is selected from the group consisting of hydrogen, nitro, amide, halide, trimethylsilyl, alkyl groups, and alkoxy groups, and curing the liquid to a solid.

A curable liquid developer composition comprising a colorant, a polymeric compound selected from the group consisting of ##STR24## wherein X is an anion with weak nucleophilicity, A, B, and C represent the number of monomer units, wherein C may be zero, R is selected from the group consisting of hydrocarbon groups and alkylene ether groups, and R" is selected from the group consisting of hydrogen, nitro, amide, halide, trimethylsilyl, alkyl groups, and alkoxy groups, and a substantial amount of a curable liquid vehicle having a viscosity of no more than about 500 centipoise and a resistivity of no less than about 10.sup.8 ohm-cm.