公开(公告)号：US11086062B2

公开(公告)日：2021-08-10

申请号：US16494669

申请日：2018-03-16

申请人： FUKUVI CHEMICAL INDUSTRY CO., LTD. ,  KURARAY CO., LTD.

发明人： Naoaki Kanamori ,  Toshiaki Sugawara ,  Hiroshi Oshima ,  Dai Kataoka

IPC分类号： F21V8/00 ,  G02B6/02 ,  G02B6/036

摘要： A circumferentially light-emitting thermoplastic resin molded body which can be bent for use according to the type of optical ornaments or the shape of an object to be decorated and which allows the overall luminance of the emitted light to improve and restrains the luminescent color from being yellowed at the distal locations of such body with regard to the light source. The thermoplastic resin molded body has a core layer made from a thermoplastic elastomer; and a first clad layer made from a thermoplastic resin whose refractive index is smaller than the thermoplastic elastomer from which the core layer is made, in which a light diffusing agent is added to the thermoplastic elastomer from which the core layer is made and the thermoplastic resin from which the first clad layer is made respectively; and the total light transmittance of the first clad layer is defined as less than 70%.

公开(公告)号：US10935697B2

公开(公告)日：2021-03-02

申请号：US16486058

申请日：2018-02-09

申请人： KURARAY CO., LTD.

发明人： Toshiaki Sugawara ,  Makoto Akai ,  Dai Kataoka

IPC分类号： G02B1/04 ,  C08F293/00 ,  C08K3/22 ,  C08K5/524 ,  C08K13/02

摘要： A resin composition is provided which has high transparency, light guiding properties and luminescent properties and can guide light therethrough with little change in chromaticity. A shaped article such as an optical element including the resin composition is also provided. The resin composition includes an acrylic block copolymer (A) and a light diffusing agent (B), wherein the acrylic block copolymer (A) has at least one structure in which polymer blocks (a1) based on methacrylic acid ester units are bonded to both ends of a polymer block (a2) based on acrylic acid ester units, and has a weight average molecular weight of 10,000 to 150,000 and a tensile elastic modulus of 1 to 1,500 MPa, the light diffusing agent (B) is rutile titanium oxide having an average particle size of 0.5 to 2.0 μm, and the content of the light diffusing agent (B) is 0.5 to 10 ppm (on mass basis) based on the acrylic block copolymer (A).

公开(公告)号：US10563001B2

公开(公告)日：2020-02-18

申请号：US15575656

申请日：2016-05-13

申请人： KURARAY CO., LTD.

发明人： Toshiaki Sugawara ,  Hiroshi Oshima

IPC分类号： C08F297/02 ,  C08L53/00 ,  G02B1/04 ,  C08K5/526 ,  C08L33/12 ,  C08L33/02

摘要： The invention provides an acrylic block copolymer which has excellent transparency, profile extrusion properties and surface smoothness of shaped articles, and which is also excellent in light guiding properties. The acrylic block copolymer includes a polymer block (a1) predominantly containing methacrylic acid ester units and a polymer block (a2) predominantly containing acrylic acid ester units, and has a refractive index of 1.485 to 1.495 and an order-disorder transition temperature (ODTT) of not more than 260° C.