Positive film type light sensitiveness anticorrosion additive compsn. and application thereof
A photosensitive and resist technology, applied in optics, opto-mechanical equipment, instruments, etc., can solve the problems of difficult use and high price of printed circuit substrates
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Embodiment 1
[0164] 200 ml of tetrahydrofuran was charged into a 4-neck flask with an inner volume of 1000 ml, equipped with a stirrer, a thermometer, a cooling tube and a dropping funnel with an inner volume of 500 ml, and the external temperature was raised to 80° C. under reflux in a water bath while stirring. In addition, 100 grams (0.75 moles) of 4-(1-methylvinyl) phenol (hereinafter referred to as PIPE) purified by crystallization and purification of 2-octanol solution, 100 grams (0.75 moles) of methyl acrylate purified by distillation were placed in a 1000 ml Erlenmeyer flask. 193.7 g (2.25 mol) of ester, 108 g (0.75 mol) of 1-ethoxyethyl acrylate, 16.4 g (0.10 mol) of azobisisobutyronitrile as a radical polymerization initiator, and 200 ml of tetrahydrofuran as a solvent.
[0165] After the solution was stirred and dissolved, the whole amount was transferred to the dropping funnel twice, and dropped into the above-mentioned 4-neck flask at a speed of about a continuous reflux state....
Embodiment 2～4
[0174] The methyl acrylate used in Example 1 was changed as shown in Table 1, and other conditions were completely the same as in Example 1, and the reaction and post-treatment were performed. The molar ratio, yield, weight average molecular weight, and molecular weight dispersion of the obtained copolymer were measured in the same manner as in Example 1. Moreover, solvent solubility, the dissolution rate with respect to alkaline developing solution, transparency, and thermal stability were evaluated similarly to Example 1. These analysis results and evaluation results are shown in Table 1 together with the results of Example 1.
Embodiment 5～6
[0180] Except for replacing the 1-ethoxyethyl acrylate used in Example 1 with the alkoxyalkyl acrylates shown in Table 2 at the molar ratios shown in Table 2, the reaction was carried out in the same manner as in Example 1. Post-processing, analysis and evaluation. The analysis results and evaluation results of the obtained copolymer are shown in Table 2 together with the results of Example 1.
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