PRESSURE-SENSITIVE COPYING MATERIAL.

摘要

An excellent pressure-sensitive copying material which has an excellent color forming rate, odors little, and undergoing neither offset nor blotting, said copying material comprising an electron-accepting developer and a solution of an electron-donating color former which forms color upon contact with the developer, wherein the solvent of the solution comprises a mixture of 20 to 80 wt % of sec-butyldiphenylmethane, 5 to 50 wt % of sec-butyldiphenylethane (1, 1) and 5 to 50 wt % of sec-butyldiphenylethane(1, 2).