公开(公告)号：US20240132742A1

公开(公告)日：2024-04-25

申请号：US18546014

申请日：2022-03-14

Applicant: RIKEN TECHNOS CORPORATION

Inventor： Shoko NAKAJIMA

IPC: C09D123/12 ,  B05D7/00 ,  C09D7/20

CPC classification number: C09D123/12 ,  B05D7/54 ,  C09D7/20 ,  B05D2201/02 ,  B05D2507/02

Abstract: Disclosed is a coating material comprising 100 parts by mass of an acid-modified polypropylene (A) and at least 450 parts by mass of organic solvents (B), wherein the acid-modified polypropylene has a melting point of 90° C. or lower and the organic solvents (B) comprises 80-99 mass % aromatic hydrocarbon solvent (B1) and 20-1 mass % one or more solvents (B2) selected from the group consisting of ester-based solvents, ketone-based solvents, and alcohol-based solvents, the sum of the proportion of the ingredient (B1) and the proportion of the ingredient (B2) being 100 mass %. The coating material may further contain a compound (C) having, in the molecule, two or more functional groups capable of forming a chemical bond with a carboxyl group, in an amount of 0.1-20 parts by mass. The compound (C) having, in the molecule, two or more functional groups capable of forming a chemical bond with a carboxyl group may be one having no hydrolyzable group. Also disclosed are: a coating film formed from the coating material; a layered product comprising the coating film and a substrate film; and a flexible flat cable including the layered product.

公开(公告)号：US11639428B2

公开(公告)日：2023-05-02

申请号：US16463994

申请日：2017-11-07

Applicant: RIKEN TECHNOS CORPORATION

Inventor： Nozomu Washio

IPC: B32B27/08 ,  C08J7/04 ,  B32B27/18 ,  B32B27/30 ,  B32B27/32 ,  B32B27/36 ,  C08K3/36 ,  C08K5/375 ,  C08K5/548 ,  C08K5/544

Abstract: One embodiment is a hardcoat multilayer film which includes layers, namely, a first hardcoat, a second hardcoat and a transparent resin film sequentially from the surface layer side. The first hardcoat is formed from a coating material that does not contain inorganic particles, while containing 100 parts by mass of (A) a polyfunctional (meth)acrylate, 0.5-20 parts by mass of (B) a compound having two or more secondary thiol groups in each molecule, 0.01-7 parts by mass of (C) a water repellent agent and 0.01-10 parts by mass of (D) a silane coupling agent; and the second hardcoat is formed from a coating material that contains 100 parts by mass of (A) a polyfunctional (meth)acrylate and 30-300 parts by mass of (F) inorganic fine particles having an average particle diameter of 1-300 nm. The polyfunctional (meth)acrylate (A) may contain 20% by mass or more of a tripentaerythritol acrylate. The coating material which forms the first hardcoat may additionally contain 0.1-5 parts by mass of (E) a thiophenyl-based photopolymerization initiator.

公开(公告)号：US10767035B2

公开(公告)日：2020-09-08

申请号：US15517927

申请日：2015-09-11

Applicant: RIKEN TECHNOS CORPORATION

Inventor： Tomohiro Takahashi ,  Hidemasa Sugimoto

IPC: B29C43/24 ,  B29C43/52 ,  B32B9/00 ,  B32B9/04 ,  C08J5/18 ,  C08K3/04 ,  C08L23/04 ,  C08L23/06 ,  C08L23/28 ,  B29L31/34 ,  B29K105/00

Abstract: Embodiments provide a method for producing a film including a thermoplastic resin composition, the method including: (1) a step of subjecting a thermoplastic resin composition to preliminary heating at 100-250° C.; (2) a step of subjecting a first roller and second roller of a calender roll film-forming apparatus to pre-heating; and (3) a step of introducing the thermoplastic resin composition, which has been subjected to preliminary heating in step (1), into the clearance between the first roller and second roller, which have been pre-heated in step (2), and continuously winding a molten film of the thermoplastic resin composition on the first roller. According to at least one embodiment, the rotational speed of the first roller is higher than the rotational speed of the second roller. According to at least one embodiment, the thermoplastic resin composition contains (A) 100 parts by mass of a thermoplastic resin, (B) 1-60 parts by mass of carbon nanotubes and (C) 1-100 parts by mass of at least one type of material selected from the group consisting of acetylene black and graphite.

公开(公告)号：US20200223205A1

公开(公告)日：2020-07-16

申请号：US16330631

申请日：2017-07-25

Applicant: RIKEN TECHNOS CORPORATION

Inventor： Hideaki YAMBE ,  Kohei NAKASHIMA

IPC: B32B37/15 ,  B32B27/08 ,  B32B27/30 ,  B32B27/36 ,  B29C48/00 ,  B29C48/21

Abstract: Embodiments provide a method for producing a multilayer film, the method including: (A) a step for continuously coextruding from a T die (3) a molten film (4) of a multilayer film in which a first acrylic resin layer (α1), an aromatic polycarbonate resin layer (β), and a second acrylic resin layer (α2) are directly laminated in the stated order using a coextrusion apparatus; (B) a step for feeding and pressing the molten film of the multilayer film between a first mirror surface body (5) that rotates or revolves and a second mirror surface body (6) that rotates or revolves so that the first acrylic resin layer (α1) is disposed on the first-mirror-surface-body side; and (C) a step for holding the pressed multilayer film against the first mirror surface body and sends the pressed multilayer film to the subsequent third mirror surface body (8) that rotates or revolves, where TR1 (surface temperature of first mirror surface body), TR2 (surface temperature of second mirror surface body), Tα1 (glass transition temperature of first acrylic resin), Tα2 (glass transition temperature of second acrylic resin), and Tβ (glass transition temperature of aromatic polycarbonate resin) satisfy a prescribed relationship.

公开(公告)号：US10596739B2

公开(公告)日：2020-03-24

申请号：US15559357

申请日：2016-02-04

Applicant: RIKEN TECHNOS CORPORATION

Inventor： Nozomu Washio ,  Taketo Hashimoto ,  Jun Fujimoto

IPC: B29C48/15 ,  C09D7/40 ,  B32B27/18 ,  C08J7/04 ,  B32B1/00 ,  B32B27/20 ,  B32B27/30 ,  C09D133/10 ,  C09D135/02 ,  B05D1/00 ,  B05D1/02 ,  B29L31/30

Abstract: One embodiment provides a molded body that includes a resin substrate and in which: a part or all of the surface of the substrate is coated with a hard coat; a first hard coat is formed from a coating material that does not contain inorganic particles and that contains (A) 100 parts by mass of a polyfunctional (meth)acrylate, (B) 0.01-7 parts by mass of a water-repelling agent, and (C) 0.01-10 parts by mass of a silane coupling agent; and a second hard coat is formed from a coating material containing (A) 100 parts by mass of the polyfunctional (meth)acrylate and (D) 50-300 parts by mass of fine inorganic particles having an average particle size of 1-300 nm. Another embodiment provides a molded body that includes a resin substrate and in which a part or all of the surface of the substrate is coated with a hard coat, a first hard coat is formed from a coating material that does not contain inorganic particles, a second hard coat is formed from a coating material containing inorganic particles, (i) the total light transmittance is 85% or more, and (ii) the pencil hardness of the surface of the first hard coat is 5H or more.

公开(公告)号：US10576498B2

公开(公告)日：2020-03-03

申请号：US15128014

申请日：2015-01-27

Applicant: RIKEN TECHNOS CORPORATION

Inventor： Taketo Hashimoto ,  Nozomu Washio

IPC: B05D7/00 ,  B05D3/06 ,  B05D1/26 ,  C08J7/12 ,  C08J3/24 ,  C08J7/04

Abstract: Embodiments of the invention provide a method for producing a multilayer coated film which involves obtaining a first layered body by forming, on a film substrate, a wet-coated film including a coating material (A) containing an active energy ray-curable resin which contains a first photopolymerization initiator and a second photopolymerization initiator, the reaction wavelengths of which differ from one another; and forming a pre-cured coated film including the coating material (A) in a dry-to-the-touch state by preliminarily curing the wet-coated film including the coating material (A), by irradiating the first layered body with active energy rays which include the reaction wavelength of the first photopolymerization initiator and do not include the reaction wavelength of the second photopolymerization initiator. The method further includes obtaining a second layered body by forming a wet-coated film including a coating material (B) on the pre-cured coated film including the coating material (A); and obtaining the multilayer coated film by fully curing the pre-cured coated film including the coating material (A) by irradiating the second layered body with active energy rays including the reaction wavelength of the second photopolymerization initiator.

公开(公告)号：US20200017724A1

公开(公告)日：2020-01-16

申请号：US15999881

申请日：2016-03-01

Applicant: RIKEN TECHNOS CORPORATION

Inventor： Shoko NAKAJIMA ,  Hitomi INOMATA

IPC: C09J7/38 ,  B32B17/10 ,  B32B27/08 ,  B32B7/12 ,  C09J7/20

Abstract: According to at least one embodiment, there is provided a pressure-sensitive adhesive which includes 100 parts by mass of (A) an acrylic polymer having a glass transition temperature of −50 to −25° C., 0.01-3 parts by mass of (B) a silane coupling agent having an epoxy group, 0.01-0.9 parts by mass of (C) a compound having two or more epoxy groups in the molecule, and 0.01-0.5 parts by mass of (D) an organic polyvalent-metal compound. Another embodiment is a decorative sheet which includes a layer including the pressure-sensitive adhesive. Other embodiments include the front panel of a door for opening/closing a front part of an article main body, which includes a layer including the pressure-sensitive adhesive.

公开(公告)号：US20190382613A1

公开(公告)日：2019-12-19

申请号：US16464068

申请日：2017-11-14

Applicant: RIKEN TECHNOS CORPORATION

Inventor： Shigekazu ITO ,  Koji INAGAKI

IPC: C09D133/06 ,  C09D175/04 ,  C08F212/08 ,  C08F220/14 ,  C08F220/18 ,  C08G18/73 ,  C09D125/06 ,  C09D133/12 ,  C08K3/013 ,  C09D7/62 ,  C09D7/40

Abstract: Embodiments provide a coating material containing: (A) 100 parts by mass of an acrylic curable resin; (B) 5-200 parts by mass of aluminum oxide particles having an average particle size of 1-100 μm; (C) 0.1-20 parts by mass of aluminum oxide fine particles having an average particle size of 1-100 nm; and (D) 1-100 parts by mass of a compound having two or more isocyanate groups per molecule. In one embodiment, the acrylic curable resin (A) includes: (a1) a structural unit derived from a hydroxy group-containing (meth)acrylic acid ester; (a2) a structural unit derived from a vinyl aromatic compound; and (a3) a structural unit derived from a (meth)acrylic acid alkyl ester. In one embodiment, the acrylic curable resin (A) may contain, in addition to the structural units (a1) and (a2): (a3-1) a structural unit derived from methyl methacrylate; and (a3-2) a structural unit derived from an aliphatic (including alicyclic) alkyl ester having 4 or more carbon atoms of a (meth)acrylic acid.

公开(公告)号：US10407590B2

公开(公告)日：2019-09-10

申请号：US15315267

申请日：2015-04-07

Applicant: RIKEN TECHNOS CORPORATION

Inventor： Yasuhiro Itagaki ,  Shigekazu Ito

IPC: C09D135/02 ,  C08K3/36 ,  C08K5/057 ,  G02B1/10 ,  B32B27/18 ,  B32B27/20 ,  B32B27/30 ,  B32B27/36 ,  C08F2/44 ,  C08J7/04 ,  C08F290/06 ,  C08F290/14 ,  C08L35/02 ,  C09D135/00

Abstract: Embodiments of the invention relate to an actinic-ray-curable resin composition which includes 100 parts by mass of a polyfunctional (meth)acrylate; 0.2-4 parts by mass of a compound having an alkoxysilyl group and a (meth)acryloyl group; 0.05-3 parts by mass of an organic titanium; and 5-100 parts by mass of fine particles having an average particle diameter of 1-300 nm. Embodiments of the invention also relate to a layered transparent resin product which includes a hardcoat layer and a layer of a transparent resin sheet in this order from the outermost layer side, wherein the hardcoat has been formed from a coating material including 100 parts by mass of a polyfunctional (meth)acrylate; 0.2-4 parts by mass of a compound having an alkoxysilyl group and a (meth)acryloyl group; 0.05-3 parts by mass of an organic titanium; and 5-100 parts by mass of fine particles having an average particle diameter of 1-300 nm.

公开(公告)号：US20190225790A1

公开(公告)日：2019-07-25

申请号：US16313564

申请日：2017-06-27

Applicant: RIKEN TECHNOS CORPORATION

Inventor： Nanami HORIUCHI

IPC: C08L27/06 ,  C08L23/08 ,  C08K5/12 ,  C08L51/00 ,  C08K5/00

Abstract: There is provided a thermoplastic resin composition suitable for coating an electric wire with high abrasion resistance, excellent cold resistance and flexibility at a low temperature, and wherein the electric wire is mounted on automobiles, particularly, which has a small diameter and a thin coating thickness.