Abstract: A compound of the formula: ##STR1## wherein R.sub.1 and R.sub.2 are the same or different and represent an alkyl group or combine with the nitrogen atom to form a ring, and X represents a pyridyl group, a quinolyl group, or a pyridyl or quinolyl group substituted by at least one alkyl or alkoxy group; a process for preparing the compound and an electrophotographic material containing the same.

Abstract: An electrostatic recording material comprising a support having formed thereon a dielectric layer composed of a terpolymer consisting of (a) methacrylic acid, (b) a monomer selected from the group consisting of (1) acrylic acid esters containing at least 4 carbon atoms and (2) methacrylic acid esters containing at least 5 carbon atoms, and (c) a monomer selected from the group consisting of (1) acrylic acid esters containing at least 4 carbon atoms and (2) methacrylic acid esters containing at least 5 carbon atoms, wherein monomer (b) and monomer (c) are different and at least one of the monomers (b) and (c) is an acrylic acid ester containing at least 11 carbon atoms or a methacrylic acid ester containing at least 8 carbon atoms, and a method for producing an electrostatic recording material, which comprises converting such a terpolymer to a water-soluble or water-emulsifiable salt of the terpolymer in which about 20 to 100 mol% of the carboxyl groups present form a salt with ammonia and/or a volatile amine,

Abstract: An electrostatic recording material, such as a dielectric coated paper and a paper for transfer of an electrostatic image, having a dielectric layer comprising a copolymer which comprises about 15 to 70 mol% of methacrylic acid and about 85 to 30 mol% of a methacrylate or acrylate and which contains free carboxylic acid groups, and a process for producing the electrostatic recording material comprising coating a water-soluble or -emulsifiable ammonium or amine salt of the copolymer on a support and drying the coated support.