Process for preparing resins for use in printing ink
AssigneeMitsui Petrochemical Industries, Ltd.
InventorsKoichi Yamada, Teijiro Morimoto, Yoshioki Yoshioka
Life of this patent
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Abstract
A process for preparing resins for use in printing inks, which comprises co-polymerizing at least 50% by weight of dicyclopentadiene and not more than 50% by weight of another cationically polymerizable monomer in the presence of a Friedel-Crafts polymerization catalyst, adding 1 to 20% by weight, based on the weight of the resulting co-polymer, of an .alpha.,.beta.-unsaturated carboxylic acid or its anhydride to the resulting copolymer, and then esterifying the resulting adduct at last partially with a polyhydric alcohol.
Claims15
A process for preparing resins for use in printing inks, which comprises
- a. copolymerizing not less than 50% by weight of dicyclopentadiene and not more than 50% by weight of at least one other cationically polymerizable monomer having at least one double bond at a temperature ranging from -20 to 100.degree. C. in the presence of a Friedel-Crafts polymerization catalyst resulting in a copolymer,
- b. reacting 1 to 20% by weight, based on the weight of the resulting copolymer, of an .alpha.,.beta.-unsaturated carboxylic acid or its anhydride with the resulting copolymer, and then
- c. esterifying the resulting adduct to a degree of 20 to 100% with a polyhydric alcohol.
Dependencies are inferred from the claim text.