| 摘要 |
Printing ink composition characterized by containing as a vehicle a resin having a softening point of 100 DEG C. or more and acid value of 5 to 50, said resin being obtained by reacting the following three components A, B and C, i.e., cyclopentadiene, dicyclopentadiene or their alkyl substituted derivatives as the A component an alpha , beta -unsaturated monocarboxylic acid as the B component and alkyl esters of said monocarboxylic acid as the C component, in proportions of such amounts as to satisfy the following formulae, <IMAGE> <IMAGE> at a temperature in the range of 150 DEG - 350 DEG C. in the absence of a catalyst.
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