Solder resist composition and printed-circuit board
A technology for printed circuit boards and compositions, applied in the directions of printed circuit, printed circuit, printed circuit manufacturing, etc., can solve the problems of deterioration of white solder mask, reduced reflectivity, deterioration of solder mask, etc., and achieves excellent resolution, improved Acid resistance effect
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[0081] Example
[0082] Examples and comparative examples are shown below to specifically describe the present invention, but the present invention is not limited by them.
[0083] (A) Synthesis of carboxyl-containing resin
Example Embodiment
[0084] Synthesis example 1
[0085] In a 2-liter separable flask equipped with a stirrer, a thermometer, a reflux condenser, a dropping funnel, and a nitrogen introduction tube, 900 g of diethylene glycol dimethyl ether as a solvent and 21.4 g of peroxide as a polymerization initiator (2 -Ethylhexanoic acid) tert-butyl ester (manufactured by NOF Corporation, trade name; PERBUTYL O), heated to 90°C. After heating, 309.9 g of methacrylic acid, 116.4 g of methyl methacrylate, and 109.8 g of lactone-modified 2-hydroxyethyl methacrylate (manufactured by Daicel Corporation, trade name; Placcel FM1) were added dropwise thereto over 3 hours. ) And 21.4 g of bis(4-tert-butylcyclohexyl)peroxydicarbonate (manufactured by NOF Corporation, trade name; PEROYL TCP) as a polymerization initiator. This was further aged for 6 hours to obtain a carboxyl group-containing copolymer resin. Among them, these reactions proceed under a nitrogen atmosphere.
[0086] Next, 363.9 g of 3,4-epoxycyclohexyl m...
Example Embodiment
[0087] Synthesis Example 2
[0088] In a flask equipped with a thermometer, a stirrer, a dropping funnel, and a reflux condenser, add diethylene glycol monoethyl ether acetate as a solvent and azobisisobutyronitrile as a catalyst, and heat it to 80 under a nitrogen atmosphere. ℃, the monomer which mixed methacrylic acid and methyl methacrylate in a molar ratio of 0.40:0.60 was added dropwise over about 2 hours. After further stirring this for 1 hour, the temperature was increased to 115° C. to inactivate the resin solution.
[0089] After cooling the resin solution, using tetrabutylammonium bromide as a catalyst, butyl glycidyl ether was added at a molar ratio of 0.40 to the carboxyl group of the obtained resin under the conditions of 95~105°C for 30 hours. React and cool.
[0090] Furthermore, tetrahydrophthalic anhydride was subjected to an addition reaction at a molar ratio of 0.26 under the conditions of 95 to 105°C for 8 hours with respect to the OH group of the resin obtained...
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