Photo-curable and heat-curable resin composition
A resin composition and photocurable technology, applied in the field of photocurable thermosetting resin compositions, can solve problems such as difficulty in removing impurities, and achieve the effects of improving flexibility, improving electrical properties, and reducing chloride ion impurities
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[0167] Although Examples and Comparative Examples are shown below and the present invention will be specifically described, the present invention is not limited to the following Examples. In addition, the following "parts" and "%" refer to mass standards unless otherwise specified.
Synthetic example 1
[0169] In an autoclave equipped with a thermometer, a nitrogen gas introduction device, an alkylene oxide introduction device, and a stirring device, 119.4 g of a novolac-type cresol resin (manufactured by Showa Polymer Co., Ltd., trade name "Shonol CRG951", OH equivalent: 119.4 ), 1.19g potassium hydroxide and 119.4g toluene, while stirring, carry out nitrogen replacement in the system, and heat up. Next, slowly add 63.8g of propylene oxide dropwise, at 125-132°C, at 0-4.8kg / cm 2 React for 16 hours. Then, it was cooled to room temperature, and 1.56 g of 89% phosphoric acid was added to the reaction solution to neutralize potassium hydroxide to obtain a non-volatile content of 62.1%, a hydroxyl value of 182.2 g / eq. Propane reaction solution. This is a substance in which 1.08 moles of alkylene oxide were added on average per 1 equivalent of phenolic hydroxyl group.
[0170] Next, 293.0 g of the alkylene oxide reaction liquid of the obtained novolak type cresol resin, 43.2 g ...
Synthetic example 2
[0172] In a 5-liter detachable flask equipped with a thermometer, a stirrer, and a reflux condenser, 1245 g of polycaprolactone diol (DDAICEL CHEMICAL INDUSTRIES, LTD. manufacture PLACCEL208, molecular weight 830), 201 g of polycaprolactone diol as a polymer polyol, and 201 g as Dimethylol propionic acid of a dihydroxy compound having a carboxyl group, 777 g of isophorone diisocyanate as a polyisocyanate, and 119 g of 2-hydroxyethyl acrylate as a (meth)acrylate having a hydroxyl group, and 0.5 g each p-methoxyphenol and di-tert-butyl-hydroxytoluene. Heating was stopped at 60° C. while stirring, and 0.8 g of dibutyltin dilaurate was added. If the temperature in the reaction vessel begins to drop, then reheat, continue stirring at 80°C, and confirm the absorption spectrum of the isocyanate group (2280cm -1 ) disappears to terminate the reaction to obtain a viscous liquid urethane acrylate compound. Non-volatile content=50 mass % was adjusted using carbitol acetate. A resin so...
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