Curable composition, cured film using same, and outer coating film
A technology of curable composition and compound, applied in the direction of coating, coating non-metallic protective layer, polyurea/polyurethane coating, etc., can solve the problem of not fully satisfying the bending resistance, and achieve excellent long-term insulation reliability, high Insulation reliability and warpage suppression effect
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[0264] The following examples illustrate the present invention more specifically, but the present invention is not limited to the following examples.
[0265]
[0266]The acid value of the solution containing (component A) used in this invention was measured by the following method, and the acid value of (component A) was calculated|required using Formula (α). However, as the solvent used for the above-mentioned solution, a solvent having an acid value of "0" was used.
[0267] First, about 1 g of a solution containing (component A) was accurately weighed. Then, 30 g of a mixed solvent of isopropanol / toluene=1 / 2 (mass ratio) was added to this, and it melt|dissolved uniformly. An appropriate amount of phenolphthalein was added as an indicator to the obtained solution, and titration was performed using a 0.1N KOH solution (alcoholic). Furthermore, the acid value was computed by the following formula (α) from a titration result.
[0268] A=10×Vf×56.1 / (Wp×I)…Formula (α)
[0...
Synthetic example 1
[0292] (Synthesis example 1)
[0293] In a four-necked flask equipped with a stirrer, a cooling tube, a nitrogen inlet tube and a thermometer, add 270.7 mass of 3,3',4,4'-benzophenonetetracarboxylic dianhydride (BTDA) as tetracarboxylic dianhydride parts and 964.4 parts by mass of γ-butyrolactone as a solvent were stirred and dissolved at 120°C. 142.6 parts by mass of 4,4'-diphenylmethane diisocyanate (MDI) as a diisocyanate compound was added thereto and stirred, and 1,8-diazabicyclo[5.4.0]- 0.1 part by mass of 7-undecene (DBU) was reacted at 120° C. for 3 hours under a nitrogen stream. Then, by cooling to room temperature, an acid anhydride group-containing imide prepolymer at a terminal having a solid content concentration of 30% by mass was obtained.
[0294] Next, the obtained imide prepolymer having an acid anhydride group at the end with a solid content concentration of 30% by mass was heated up to 100° C. and stirred, and 950.8 parts by mass of polyester diol (α), 9...
Synthetic example 2
[0295] (Synthesis example 2)
[0296] In a four-necked flask equipped with a stirrer, a cooling tube, a nitrogen inlet tube and a thermometer, add 270.7 mass of 3,3',4,4'-benzophenonetetracarboxylic dianhydride (BTDA) as tetracarboxylic dianhydride parts and 964.4 parts by mass of γ-butyrolactone as a solvent were stirred and dissolved at 120°C. 142.6 parts by mass of 4,4'-diphenylmethane diisocyanate (MDI) as a diisocyanate compound was added thereto and stirred, and 1,8-diazabicyclo[5.4.0]- 0.1 part by mass of 7-undecene (DBU) was reacted at 120° C. for 3 hours under a nitrogen stream. Then, by cooling to room temperature, an acid anhydride group-containing imide prepolymer at a terminal having a solid content concentration of 30% by mass was obtained.
[0297] Next, the obtained imide prepolymer having an acid anhydride group at the end with a solid content concentration of 30% by mass was heated up to 100° C. and stirred, and 3-methyl-1,5-pentanediol:isophthalic acid wa...
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