Patent ID: 8003298

Claim:
A method for preparing a printing resist comprising at least one polymer main chain bound to a tackiness-inducing vinyl group comprising: mixing one selected from the group consisting of meta-cresol, para-cresol, meta-cresol bound to a vinyl group, and para-cresol bound to a vinyl group, with one selected from the group consisting of the meta-cresol bound to a vinyl group, and the para-cresol bound to a vinyl group to form a cresol mixture; and carrying out copolymerization by reacting the cresol mixture with formaldehyde to form the printing resist, wherein the polymer main chain comprises the meta-cresol or the para-cresol or the meta-cresol and the para-cresol; wherein the printing resist comprising the meta-cresol as the polymer main chain is represented by formula 1 below, the printing resist comprising the para-cresol as the polymer main chain is represented by formula 2 below, and the printing resist comprising the meta-cresol and the para-cresol as the polymer main chain is represented by formulae 3 to 5 below: wherein 1≦k1≦10 and 0≦m1≦10 (1); wherein 1≦k2≦10 and 0≦m2≦10 (2); wherein 1≦k3≦10 and 1≦m3≦10 (3); wherein 1≦k4≦10 and 1≦m4≦10 (4); ;and wherein 1≦k5≦10 and 1≦m5≦10 (5).