Photocuring resin compositions, photocuring sheets and molded article using the same, and processes of production thereof
AssigneeMitsubishi Rayon Co., Ltd.
InventorsShougo Okazaki, Yoko Kakuno, Kenji Suemura, Hiroyuki Watanabe
Life of this patent
Estimating the term…
Abstract
A photocuring resin composition comprising a thermoplastic resin (a-1) having a radical polymerizing unsaturated group at its side chain and a photopolymerization initiator (a-2) and substantially not including a crosslinking compound other than (a-1), a photocuring sheet comprising a photocuring resin composition (A) laminated on a substrate sheet (B) and a process of production of the same, a photocuring decorative sheet and photocuring insert molding sheet using the same, and a process of production of a molded article using such a photocuring sheet and an insert molded article obtained by the same.
Claims13
A photocuring resin composition (A) comprising an acrylic resin (a-1) having a radical polymerizing unsaturated group at its side chain, a photopolymerization initiator (a-2), and an inorganic particulate (a-3) having an average primary particle size of not more than 200 nm, and substantially not comprising a crosslinking compound other than (a-1).
A process of production of an insert molded article comprising
- inserting a photocuring sheet comprising a substrate (B) and a layer of a photocuring resin composition (A) comprising a thermoplastic resin (a-1) having a radical polymerizing unsaturated group at its side chain and a photopolymerization initiator (a-2) and substantially not comprising a crosslinking compound other than (a-1) and a photocuring decorative sheet comprising at least one of a printed layer and a deposited layer formed on a substrate sheet (B) side of a photocuring sheet comprising a substrate (B) and a layer of a photocuring resin composition (A) comprising a thermoplastic resin (a-1) having a radical polymerizing unsaturated group at its side chain and a photopolymerization initiator (a-2) and substantially not comprising a crosslinking compound other than (a-1) or photocuring insert molding sheet comprising at least one of a printed layer and a deposited layer, an adhesive layer, and a primer sheet formed on a substrate sheet (B) side of a photocuring sheet comprising a substrate (B) and a layer of a photocuring resin composition (A) comprising a thermoplastic resin (a-1) having a radical polymerizing unsaturated group at its side chain and a photopolymerization initiator (a-2) and substantially not comprising a crosslinking compound other than (a-1) so that the photocuring resin composition sides face inner wail surfaces of a mold;
- closing the mold, injecting a molten resin into the mold, and causing the resin to solidify to form a resin molded article with a photocuring sheet, photocuring decorative sheet, or photocuring insert molding sheet arranged on its surface;
- and
- irradiating light to photocure the photocuring resin composition on the surface of the molded article.
A process of production of an insert molded article comprising
- inserting a photocuring sheet comprising a substrate (B) and a layer of a photocuring resin composition (A) comprising a thermoplastic resin (a-1) having a radical polymerizing unsaturated group at its side chain and a photopolymerization initiator (a-2) and substantially not comprising a crosslinking compound other than (a-1) and a photocuring decorative sheet comprising at least one of a printed layer and a deposited layer formed on a substrate sheet (B) side of a photocuring sheet comprising a substrate (B) and a layer of a photocuring resin composition (A) comprising a thermoplastic resin (a-1) having a radical polymerizing unsaturated group at its side chain and a photopolymerization initiator (a-2) and substantially not comprising a crosslinking compound other than (a-1) or photocuring insert molding sheet comprising at least one of a printed layer and a deposited layer, an adhesive layer, and a primer sheet formed on a substrate sheet (B) side of a photocuring sheet comprising a substrate (B) and a layer of a photocuring resin composition (A) comprising a thermoplastic resin (a-1) having a radical polymerizing unsaturated group at its side chain and a photopolymerization initiator (a-2) and substantially not comprising a crosslinking compound other than (a-1) so that the photocuring resin composition sides face inner wall surfaces of a mold;
- preliminarily molding a photocuring sheet, photocuring decorative sheet, or photocuring insert molding sheet and making the sheets follow the shape of the mold;
- closing the mold, injecting a molten resin into the mold, and allowing the resin to solidify to form a resin molded article with a photocuring sheet, photocuring decorative sheet, or photocuring insert molding sheet arranged on its surface;
- and
- irradiating light to photocure the photocuring resin composition on the surface of the molded article.
Dependencies are inferred from the claim text.