公开(公告)号：EP3904400A1

公开(公告)日：2021-11-03

申请号：EP19901614.8

申请日：2019-12-18

申请人： Kuraray Co., Ltd.

发明人： OIDA, Issei ,  NOGUCHI, Daiki ,  FUKUMOTO, Takashi

IPC分类号： C08F12/00 ,  C08F20/06 ,  C08F290/06 ,  C09D4/00 ,  C09D4/02 ,  C09D163/10 ,  C09D175/14

摘要： The present invention relates to a composition containing a compound (A) represented by the following general formula (I) and a compound having two or more polymerizable functional groups (B) in a molecule (except for compound (A)), wherein a mass ratio ((A)/(B)) of the compound (A) to the compound having two or more polymerizable functional groups (B) in a multi-molecule is 30/70 to 50/50:

wherein, R 1 and R 2 each independently represent any one selected from the group consisting of a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, an alkenyl group having 2 to 6 carbon atoms, an aryl group, and an aralkyl group; R 3 represents any one selected from the group consisting of an alkyl group having 1 to 6 carbon atoms, an alkenyl group having 2 to 6 carbon atoms, an aryl group, and an aralkyl group; R 4 represents any one selected from the group consisting of a (meth)acryloyl group, a styryl group, and an alkenyl group having 2 to 6 carbon atoms; and n represents any integer of 1 to 5.

公开(公告)号：EP3904231A1

公开(公告)日：2021-11-03

申请号：EP19905635.9

申请日：2019-12-27

申请人： Kuraray Co., Ltd.

发明人： OKAMOTO Minoru ,  SHIMIZU Sayaka ,  KAZETO Osamu

IPC分类号： B65D65/46 ,  C08J5/18

摘要： Provided are a water-soluble PVA film having good water sealing properties in addition to excellent water solubility while maintaining mechanical strength of the water-soluble PVA film and a package using the same. A water-soluble film of the present invention includes a polyvinyl alcohol resin. When a crystallinity index calculated using a diamond prism is Fd1 and a crystallinity index calculated using a germanium prism is Fg1 for FT-IR measurement of a first surface of the water-soluble film by ATR technique, Fd1 and Fg1 are 0.25 ≤ Fd1 ≤ 0.65 and Fd1/Fg1 > 1. Fd1 and Fg1 are preferably Fd1/Fg1 ≤ 1.5.

公开(公告)号：EP3904090A1

公开(公告)日：2021-11-03

申请号：EP19903591.6

申请日：2019-12-27

申请人： Kuraray Co., Ltd.

发明人： OZAWA, Yushi ,  TAGA, Sho

IPC分类号： B32B27/20 ,  B32B27/30 ,  C08L21/00 ,  C08L33/04 ,  C08J5/18

摘要： A base film for decorative film, the base film comprising a resin composition comprising crosslinked rubber particles and a resin (1), the resin (1) mainly comprising a unit of (meth)acrylic acid ester and no ring structure in the main chain, and having a triad syndiotacticity (rr) of not less than 56% and a glass transition temperature of not less than 122 °C, wherein the base film satisfies the following formula: 1.2 ≤ rr / c ≤ 5.0 wherein rr is a percentage value of the triad syndiotacticity (rr) of the resin (1), and c is a percentage value of the mass ratio of the crosslinked rubber particles to the resin composition.

公开(公告)号：EP3901364A1

公开(公告)日：2021-10-27

申请号：EP19899044.2

申请日：2019-12-10

申请人： Kuraray Co., Ltd.

发明人： HATTORI, Hiroyuki ,  KATOU, Yasuhiro ,  SUETOSHI, Kazuyuki ,  NAGAYAMA, Rei

IPC分类号： D06N3/00 ,  D06M11/00 ,  D06M15/564

摘要： Disclosed is a napped artificial leather napped including: a non-woven fabric that is an entangle body of ultrafine fibers; and an elastic polymer impregnated into the non-woven fabric, the napped artificial leather having, at least on one side thereof, a napped surface formed by napping the ultrafine fibers, wherein the ultrafine fibers contain 0.5 mass% or more of a pigment (A), the elastic polymer contains 0 to 0.01 mass% of a pigment (B), and the ultrafine fibers and the elastic polymer are undyed; the napped surface has a lightness L* value of 25 or less in a color coordinate space (L*a*b* color space); and a ratio of an area occupied by the elastic polymer, observed on the napped surface, to a total area of an area occupied by the ultrafine fibers and the area occupied by the elastic polymer is 0.5% or less.

公开(公告)号：EP3901204A1

公开(公告)日：2021-10-27

申请号：EP19898448.6

申请日：2019-12-20

申请人： Kuraray Co., Ltd.

发明人： TOSHINARI, Kenta ,  FUJII, Yuki ,  INATOMI, Atsushi ,  FUJITA, Akio

IPC分类号： C08K5/00 ,  C08L29/04 ,  C08L33/04 ,  C08L101/12 ,  D21H27/00

摘要： The present invention relates to the provision of an oil-resistant film from which an oil-resistant base material that is excellent in the oil resistance even in not only a plane part but also a bent part of a package can be obtained and also to the provision of an oil-resistant base material having the oil-resistant film and an oil-resistant paper having the oil-resistant film. Specifically, the present invention provides an oil-resistant film containing a polyvinyl alcohol-based polymer (A) and a polymer particle (B) containing a polymer having a glass transition temperature of 40°C or lower, wherein the content of the polymer particle (B) is 1 part by mass or more and less than 150 parts by mass based on 100 parts by mass of the polyvinyl alcohol-based polymer (A); and an oil-resistant base material (oil-resistant paper) having the oil-resistant film on a base material (paper).

公开(公告)号：EP3900948A1

公开(公告)日：2021-10-27

申请号：EP19897635.9

申请日：2019-12-12

申请人： Kuraray Co., Ltd.

发明人： KODA, Daisuke ,  UENO, Yoshikazu

IPC分类号： B60C1/00 ,  C08L9/06 ,  C08L21/00 ,  C08K3/013

摘要： Provided are a rubber composition which can give a crosslinked product with enhanced tensile strength, and a pneumatic tire including the rubber composition as a portion thereof. The rubber composition includes a solid rubber (A), a hydrogenated aromatic vinyl-conjugated diene random copolymer (B), and a filler (C). The random copolymer (B) satisfies the following (i) to (iv). (i) The content of aromatic vinyl units is 10 to 70 mass%. (ii) The vinyl content in conjugated diene units of the random copolymer (B) before hydrogenation is 10 to 70 mol%. (iii) The hydrogenation ratio of the conjugated diene units is not less than 10 mol%. (iv) The weight average molecular weight is 3,000 to 100,000.

公开(公告)号：EP3889190A1

公开(公告)日：2021-10-06

申请号：EP19891119.0

申请日：2019-11-26

申请人： Kuraray Co., Ltd.

发明人： SUGII, Hiroaki ,  HIGASHIDA, Noboru ,  TAKEDA, Hideaki

IPC分类号： C08F20/10 ,  C08F265/06 ,  C08L33/04 ,  C08L51/00 ,  C08J5/18 ,  G02B5/30

摘要： The present invention relates to a (meth)acrylic resin composition, containing a (meth)acrylic resin (A) and (meth)acrylic crosslinked rubber particles (B), wherein the (meth)acrylic resin composition has a complex viscosity of 500 to 1300 Pa·s under measurement conditions of 265°C, 10 rad/sec, and 1% strain.

公开(公告)号：EP3885382A1

公开(公告)日：2021-09-29

申请号：EP19887055.2

申请日：2019-11-21

申请人： Kuraray Co., Ltd.

发明人： FUJITA, Akio ,  INATOMI, Atsushi ,  TOSHINARI, Kenta ,  KOBAYASHI, Goro

IPC分类号： C08F299/00 ,  C08J3/075 ,  C08J3/24

摘要： The present invention relates to monodisperse hydrogel particles containing a cross-linked product of a vinyl alcohol-based polymer having an ethylenically unsaturated group and an average degree of polymerization of 450 or more, the monodisperse hydrogel particles having an average particle size of 10 to 5,000 µm, and a coefficient of variation of a particle size distribution of 10% or less.

公开(公告)号：EP3871879A1

公开(公告)日：2021-09-01

申请号：EP19877404.4

申请日：2019-10-18

申请人： Kuraray Co., Ltd.

发明人： SUZUKI, Ushio ,  WATANABE, Tetsuya ,  HATTORI, Yuichiro ,  IDE, Junya ,  SUIKO, Shunsuke ,  HARII, Tomoaki ,  TONOMORI, Fumio ,  IWASAKI, Yoshihiro ,  MIYAYAMA, Toshihiro ,  GENTSU, Hiroki

IPC分类号： B32B27/12 ,  B32B7/022 ,  B32B27/36 ,  C08L67/03 ,  D06M15/263 ,  D06M15/564 ,  D06M101/32

摘要： The present invention relates to a composite sheet comprising a woven fabric consisting of liquid crystal polyester fiber in which one side or both sides of the woven fabric is coated with a coating material comprising a thermoplastic resin, wherein a tensile strength of the composite sheet in a warp direction of the woven fabric is 300 N/cm or more, and wherein a ratio of a mass of the thermoplastic resin to a mass of the woven fabric is 5 to 25% by mass.

公开(公告)号：EP3862800A1

公开(公告)日：2021-08-11

申请号：EP19880882.6

申请日：2019-10-23

申请人： Kuraray Co., Ltd.

发明人： TSUDAKA Takeshi ,  WASHITAKE Yosuke ,  ENDO Ryokei ,  SUIKO Shunsuke

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

摘要： A light-emitting fiber includes a core and a cladding and is configured to emit light through a side surface of the fiber. A resin used for the core is at least one selected from the group consisting of polymethyl methacrylate, polymethyl methacrylate copolymers, polystyrene, polycarbonates, polyorganosiloxanes, and norbornene, and a resin used for the cladding is fluorine resin. The light-emitting fiber has a fiber diameter of 95 µm or less.