| 摘要 |
PURPOSE:To provide a pressure-sensitive copy paper ensuring beautiful finish and small trouble possibility by applying a desensitizing ink obtained by adding pigment and vehicle to a specified kind of alkylene oxide copolymer as desensitizer by dry lithographic method. CONSTITUTION:A mixture of (a) 25-60 parts by weight of an alkylene oxide copolymer represented by formula I (m is an integar larger than 6, 1+n is 0-46, m:1+n=1:0-0.47, and either of block and random copolymers can be used if 1+n is not 0) as desensitizer, (b) 10-40 parts of inorganic pigment such as titanium dioxide, zinc oxide and clays, and (c) 20-80 parts of vehicle such as alkyd and ester resins is prepared. Next, thus-obtained desensitizing ink for no-carbon pressure-sensitive copy paper is subjected to dry lithographic printing method for obtaining no-carbon pressure-sensitive copy paper. |
