Photocurable/thermosetting resin composition and cured product thereof

Abstract

Disclosed is a photocurable / thermosetting resin composition wherein the volatile component is reduced by using no or less photopolymerization initiator. This photocurable / thermosetting resin composition can be cured by relatively small amount of ultraviolet irradiation and can be developed with an aqueous alkaline solution. This composition contains a carboxyl group-containing photosensitive resin (A), a maleimide derivative (B), a compound (C) having two or more epoxy groups and / or oxetanyl groups in one molecule, and a radically polymerizable compound (D) having a cyclic ether group or a morpholino group.

Description

technical field [0001] The present invention relates to a photocurable / thermosetting resin composition and its cured product. In particular, it is useful as various resist materials for printed circuit boards, interlayer insulation materials for multilayer printed circuit boards, and as coating materials, Surface treatment agents, molding materials, adhesives, adhesives, printing inks, adhesives, etc., and photocurable and thermosetting resin compositions useful for forming laminates, optical waveguides, etc. [0002] In more detail, the present invention relates to new photocurability of components that can reduce volatilization when curing or using at high temperature or under reduced pressure without using a photopolymerization initiator or using a smaller amount than the current one. Thermosetting resin composition and cured product thereof. Background technique [0003] A photocurable resin composition that is polymerized by active energy rays such as ultraviolet light...

AI Technical Summary

Problems solved by technology

[0004] In this photocurable resin composition, the active energy ray-curable resin constituting the composition cannot initiate polymerization alone, so it is necessary to use it in combination with a photopolymerization initiator. Tendency to increase the amount added

[0005] However, when the mixing amount of the photopolymerization initiator increases, there are the following problems: unreacted photopolymerization initiator or decomposition product of the photopolymerization initiator remains in the cured product; The volatile components of the initiator cause the cured product to turn yellow or produce a foul smell

However, a large amount of ultraviolet irradiation is required, and the obtained cured coating film cannot obtain sufficient characteristics

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