초록 ▼

A photocurable prepreg composition which is characterized by easy control of a B stage state of a thermosetting resin such as an unsaturated polyester resin or an epoxy acrylate resin, excellent storage stability, and remarkable curability after being shaped; as well as a production method therefor.

A photocurable prepreg composition which is characterized by easy control of a B stage state of a thermosetting resin such as an unsaturated polyester resin or an epoxy acrylate resin, excellent storage stability, and remarkable curability after being shaped; as well as a production method therefor. A photocurable prepreg composition which contains an unsaturated polyester resin and/or an epoxy acrylate resin; at least two photopolymerization initiators with photosensitivity in different wavelength ranges; and an inorganic or an organic fiber-reinforcing material and/or filler, and which composition is treated with light of a specific wavelength such that at least one photopolymerization initiator and radical-polymerizable unsaturated groups remain partially in said resin; a production method therefor; and formed articles produced therefrom.

대표청구항 ▼

[What is claimed is:] [1.]an unsaturated polyester resin, an epoxy(meth)acrylate or a mixture thereof;at least two photopolymerization initiators with photosensitivity in different wavelength ranges comprising(A) a photopolymerization initiator with photosensitivity in a visible range of wavelengths

[What is claimed is:] [1.]an unsaturated polyester resin, an epoxy(meth)acrylate or a mixture thereof;at least two photopolymerization initiators with photosensitivity in different wavelength ranges comprising(A) a photopolymerization initiator with photosensitivity in a visible range of wavelengths of 500 nm or more or in a near infrared range comprising (1) a cationic dye represented by formula (1):wherein D.sup.+ represents a dye cation with photosensitivity in a visible or a near infrared range and which is derived from a member selected from the group consisting of methine, polymethine, cyanine, xanthene, oxazine, thiazine, arylmethane, and pyrylium: and A.sup.- represents an anion and (2) an organo borate represented by formula (2):wherein Z.sup.+ represents a cation; each R.sub.1, R.sub.2, R.sub.3 and R.sub.4 represents an alkyl group, an aryl group, an acyl group, an aralkyl group, an alkenyl group, an alkenyl group, a silyl group, a heterocyclic group, or a halogen atom; and(B) a photopolymerization initiator with photosensitivity in a visible range of wavelengths of less than 500 nm and/or in an ultraviolet range; andan inorganic or organic fiber reinforcing material, an inorganic or an organic filler or mixture thereof,and which composition is treated with light of a specific wavelength for at least one photoinitiator with photosensitivity to the specific wavelength such that at least one photopolymerization initiator and radical-polymerizable unsaturated groups remain partially in said resin.