Taiyo Holdings Co., Ltd.

Chihiro Funakoshi

Yoko Shibasaki

Yoshitomo Aoyama

Provided is a curable resin composition that has excellent heat resistance and low warpage and is, furthermore, capable of improving light transmittance in cured products, a dry film and its cured product of, and an electronic component containing the cured product. A curable resin composition containing (A) an amide-imide resin, (B) a thermosetting resin, (C) a thermosetting accelerator and (D) inorganic particles, wherein the amide-imide resin (A) is a reaction product of an isocyanurate-type polyisocyanate synthesized from an isocyanate having an aliphatic structure and a tricarboxylic anhydride having an aliphatic structure and has a number-average molecular weight of 500 to 1000; a dry film and its cured product; and an electronic component containing the cured product were obtained.

Curable resin composition, dry film and cured product of same, and electronic component containing said cured product

Provided is a curable resin composition having developability and resolution improved without degrading the heat resistance and the chemical resistance, furthermore, a curable resin composition that is useful as a PID material for optical uses or a material for optical sensor protective films and enables the formation of a cured product having both higher transparency and excellent heat resistance, a dry film containing the curable resin composition, a cured product thereof and a printed wiring board including the cured product. A curable resin composition containing (A) an amide-imide resin, (B) a compound having an ethylenic double bond and (C) a photopolymerization initiator, wherein the amide-imide resin (A) is a reaction product of an isocyanurate-type polyisocyanate synthesized from an isocyanate having an aliphatic structure and a tricarboxylic acid anhydride and has a number-average molecular weight of 500 to 1000.

Curable resin composition, dry film and cured product thereof, and electronic component including cured product

Provided is a heat curable adhesive that can strongly bond a base material formed of a crystalline polyester resin, can freely regulate the thickness of an adhesive layer, has excellent chemical resistance, and, at the same time, has excellent storage stability. Furthermore, provided is a resin laminated-type IC card, in which a liquid heat curable adhesive of which use has been difficult in the past can be used, and the liquid heat curable adhesive can be coated with a good accuracy by a printing method without the need to perform molding into a hot-melt sheet to bond a base material formed of a crystalline polyester resin. Accordingly, the resin laminated-type IC card can have a high degree of freedom in design of the thickness of an IC card. The heat curable adhesive comprises (a) a hydroxyl group-containing non-crystalline polyester resin, (b) a resin containing a carboxylic acid anhydride, and (c) a solvent for dissolving (a) the hydroxyl group-containing non-crystalline polyester resin.

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Tsurugashima, Japan

Chihiro Funakoshi