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公开(公告)号：EP4421104A1
公开(公告)日：2024-08-28
申请号：EP22883649.0
申请日：2022-10-20
申请人： Kuraray Co., Ltd.
发明人： ISHIO, Muneki , SANO, Yuki , HOSAKA, Yusaku
IPC分类号： C08G63/08 , C08L101/16
CPC分类号： C08L101/16 , C08G63/08
摘要： Provided is a β-methyl-δ-valerolactone polymer represented by the following general formula (I).
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公开(公告)号：EP4414486A1
公开(公告)日：2024-08-14
申请号：EP22878432.8
申请日：2022-09-29
申请人： Kuraray Co., Ltd.
IPC分类号： D01F6/84
CPC分类号： D01F6/84
摘要： Provided is a liquid crystal polyester fiber that suppresses gas generation during heating and has excellent hue. The liquid crystal polyester fiber has a total amount of carboxy end groups (total CEG amount) of 5.0 mEq/kg or less and a ketone bond amount of 0.05 mol% or less. For example, the liquid crystal polyester fiber may have a melting point of 380°C or lower. In addition, the liquid crystal polyester fiber may have a tenacity of lower than 18 cN/dtex. Moreover, the liquid crystal polyester fiber may contain a liquid crystal polyester having a structural unit derived from 4-hydroxybenzoic acid at a proportion of 50 mol% or more.
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公开(公告)号：EP4411067A1
公开(公告)日：2024-08-07
申请号：EP22876569.9
申请日：2022-09-30
申请人： Kuraray Co., Ltd.
发明人： TAOKA Yuta , FUJIMORI Misuzu
IPC分类号： D21H27/00 , C09J129/04 , C09J177/00 , D21F5/02 , D21H17/36 , D21H19/20 , D21H21/14
CPC分类号： C09J129/04 , C09J177/00 , D21F5/02 , D21H17/36 , D21H19/20 , D21H21/14 , D21H27/00
摘要： Provided is a creping adhesive that is favorable in a thread-forming property, wet adhesiveness, and the like. A creping adhesive contains a PVA (A), wherein at least one of (i) and (ii) below is satisfied. (i) The PVA (A) includes a PVA having a minimum degree of branching of 0.25 or more and 0.93 or less within a range of an absolute molecular weight being 200,000 or more and 800,000 or less, and a ratio Mw/Mn of a weight-average molecular weight Mw to a number-average molecular weight Mn of the PVA (A) is 2.5 or more. (ii) The ratio Mw/Mn of the weight-average molecular weight Mw to the number-average molecular weight Mn of the PVA (A) is 3.8 or more.
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公开(公告)号：EP4372017A3
公开(公告)日：2024-07-31
申请号：EP24165522.4
申请日：2021-10-14
申请人： Kuraray Co., Ltd.
发明人： KAZETO, Osamu , INUBUSHI, Yasutaka
IPC分类号： C08F216/06 , C08F8/12 , C08J5/18 , B65D65/46 , C08F218/08
CPC分类号： C08F8/12 , B65D65/46 , C08J5/18 , Y02W90/10 , C08F216/06 , C08F218/08
摘要： Provided is a PVA film using PVA that does not increase carbon dioxide existing in the global environment or has a small increase amount even when carbon dioxide is generated by a biodegradation treatment or an incineration treatment.
The present invention is a polyvinyl alcohol resin film comprising a polyvinyl alcohol resin (A), wherein an abundance ratio of carbon 14 (14C) in total carbon constituting the polyvinyl alcohol resin (A), that is, 14C/C is 1.0 × 10-14 or more.-
公开(公告)号：EP4397180A1
公开(公告)日：2024-07-10
申请号：EP22876536.8
申请日：2022-09-30
申请人： Kuraray Trading Co., Ltd. , National University Corporation Tokyo University Of Agriculture and Technology , Kuraray Co., Ltd.
发明人： AKIBA Eiji , SUZUKI Takeshi , TAKASUKA Yuki
IPC分类号： A01M1/14
CPC分类号： A01M1/14
摘要： An ambulatory pest trapping device (1) includes an upper sheet (2) on which ambulatory pests B is capable of crawling, a lower sheet (4) which is provided to face the upper sheet (2) and on which the ambulatory pests B is capable of crawling, and an adhesive sheet (8) provided between the upper sheet (2) and the lower sheet (4) and in which an intermediate sheet (3) is covered with an adhesive (5). The ridged pointed protrusions (7) made of the adhesive (5) covering the ends of the intermediate sheet 3 are provided for the adhesive sheet (8). The tip radius of curvature of each pointed protrusion (7) is 0.001 mm to 1.0 mm.
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公开(公告)号：EP4299641A1
公开(公告)日：2024-01-03
申请号：EP22759673.1
申请日：2022-02-22
申请人： Kuraray Co., Ltd.
发明人： NOMOTO, Yusaku , ZHOU, Yantao
IPC分类号： C08F265/06 , C08L51/04 , C08L75/04
摘要： Provided is a polyurethane resin composition comprising 20 to 99 parts by mass of a thermoplastic polyurethane elastomer (A) and 1 to 80 parts by mass of multilayered polymer particles (B), the multilayered polymer particles (B) satisfying the following conditions (1) to (6): (1) the multilayered polymer particles (B) comprise two or more layers having at least one rubber component layer (I) inside and at least one thermoplastic resin component layer (II) in an outermost part, (2) the rubber component layer (I) is a polymer layer formed by copolymerizing a monomer mixture (i) comprising 50 to 99.99 mass% of an acrylic acid ester, 49.99 to 0 mass% of an additional monofunctional monomer copolymerizable with the acrylic acid ester, and 0.01 to 10 mass% of a polyfunctional monomer, (3) the thermoplastic resin component layer (II) is a polymer layer formed by polymerizing a monomer (ii) comprising 40 to 100 mass% of a methacrylic acid ester and 60 to 0 mass% of an additional monomer copolymerizable with the methacrylic acid ester, (4) of the thermoplastic resin component layer (II), a polymer of the outermost layer has a number average molecular weight measured by a GPC method of 30,000 or less, (5) the total mass ratio [(I)/(II)] of the rubber component layer (I) to the thermoplastic resin component layer (II) is 30/70 to 90/10, and (6) the multilayered polymer particles (B) have an average particle size of 150 nm or less; and the melt viscosity ratio ηr of the melt viscosity η(A) of the thermoplastic polyurethane elastomer (A) at a shear rate of 121.6 sec -1 to the melt viscosity η of the polyurethane resin composition at a shear rate of 121.6 sec -1 satisfying the following relationships: melt viscosity ratio ηr (180°C) at 180°C: η(A)/η>1.0, melt viscosity ratio ηr (200°C) at 200°C: η(A)/η
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公开(公告)号：EP4293061A1
公开(公告)日：2023-12-20
申请号：EP22752703.3
申请日：2022-02-04
申请人： Kuraray Co., Ltd.
发明人： OOGUMA, Takashi , TSURUTA, Takuo , FUJI, Junichi
摘要： Provided are a polyester polyol having excellent hydrolysis resistance and capable of suppressing viscosity to a low level when used in a prepolymer, and a urethane prepolymer and a polyurethane using the polyester polyol. The polyester polyol is obtained by reacting a dicarboxylic acid component (A) with a diol component (B), wherein the dicarboxylic acid component (A) contains a dicarboxylic acid (a1) represented by the following general formula (I) and a dicarboxylic acid (a2) represented by the following general formula (II), and a content of the dicarboxylic acid (a2) is 0.02 to 3.00% by mass in 100% by mass of the total amount of the dicarboxylic acid component (A):
wherein R 1 , R 2 , R 4 , and R 5 each independently represent a divalent hydrocarbon group having 1 to 3 carbon atoms, and R 3 and R 6 each independently represent a monovalent hydrocarbon group having 1 to 3 carbon atoms.-
公开(公告)号：EP4290601A1
公开(公告)日：2023-12-13
申请号：EP22749719.5
申请日：2022-02-02
申请人： Kuraray Co., Ltd.
IPC分类号： H01M4/13 , H01M4/139 , H01M4/62 , H01M10/052
摘要： The present invention provides an additive for nonaqueous electrolyte secondary battery positive electrodes, which can improve the electrical conductivity of electrodes, decrease the resistance of electrodes, and increase the use efficiency of cation species such as lithium ions, sodium ions, various quaternary ammonium salts, and phosphonium salts.
An additive for nonaqueous electrolyte secondary battery positive electrodes, comprising a carbonaceous material having a specific surface area as determined by the BET method of from 1,000 m 2 /g to 2,000 m 2 /g, a micropore volume as determined by the DFT method of less than 0.60 cm 3 /g, and an oxygen content as measured by elemental analysis of 0.5% by mass or more and less than 1.3% by mass is disclosed.-
公开(公告)号：EP4286473A1
公开(公告)日：2023-12-06
申请号：EP22746006.0
申请日：2022-01-28
申请人： Kuraray Co., Ltd.
发明人： KONISHI, Daisuke , SASAKI, Hiromitsu , SEKIGUCHI, Takahiro , TOMISHIMA, Yuta , HASEGAWA, Takumi
摘要： The present invention relates to a resin composition containing: a block copolymer (I) having a polymer block (a1) containing a structural unit derived from an aromatic vinyl compound and a polymer block (a2) containing a structural unit derived from a conjugated diene compound; a plasticizer (II); and a biomass-derived polyolefin-based resin (III); in which the plasticizer (II) contains a plasticizer (II-1) containing a biomass-derived raw material; and in which the resin composition has a biobased content of 45% by mass or more, and a molded body obtained by using the resin composition.
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公开(公告)号：EP4279643A1
公开(公告)日：2023-11-22
申请号：EP22739477.2
申请日：2022-01-14
申请人： Kuraray Co., Ltd.
发明人： IMAGAWA, Kaori , KOIZUMI, Satoshi
摘要： Provided is a polyester binder fiber which contributes to produce a fiber structure having a high strength. The polyester binder fiber may have a ΔH of 30 J/g or less which is calculated as a difference between a melting endothermic amount ΔHm and a crystallization exothermic amount ΔHc in a temperature elevation phase as recorded by differential scanning calorimetry (DSC) curve. The polyester binder fiber may have a ratio (a 1 :(a 2 + a 3 )) between a crystalline component fraction (a 1 ) and a total amount of a constrained amorphous component fraction (a 2 ) and an amorphous component fraction (a 3 ) in the range of from 98.0:2.0 to 50.0:50.0 in which the crystalline component fraction (a 1 ), the constrained amorphous component fraction (a 2 ), and the amorphous component fraction (a 3 ) are calculated from a spin-spin relaxation time T 2 at 140°C obtained by pulsed nuclear magnetic resonance (NMR) spectroscopy.
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