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1. 发明公开

EP4372017A3 POLYVINYL ALCOHOL RESIN FILM, METHOD FOR DISCRIMINATING POLYVINYL ALCOHOL RESIN FILM, AND METHOD FOR MANUFACTURING POLYVINYL ALCOHOL RESIN FILM 审中-实审
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.

2. 发明公开

EP3904435A1 WATER-SOLUBLE FILM AND PACKAGE 审中-实审
公开(公告)号：EP3904435A1
公开(公告)日：2021-11-03
申请号：EP19901493.7
申请日：2019-12-27
申请人： Kuraray Co., Ltd.
发明人： OKAMOTO, Minoru , SHIMIZU, Sayaka , KAZETO, Osamu , ASADA, Mitsunori
IPC分类号： C08J5/18 , B65D65/46
摘要： A water-soluble film is provided that is excellent in film transparency and water solubility and inhibits sticking between the films. A water-soluble film includes a polyvinyl alcohol resin, wherein a crystallite size obtained from an X-ray profile obtained by wide-angle X-ray measurement is from 4.0 to 5.5 nm and a degree of crystallization obtained from the X-ray profile is from 10.0% to 25.0%, and an external haze is from 7.0% to 30.0%.

3. 发明授权

EP2275481B1 RESIN COMPOSITION AND MULTILAYER STRUCTURE USING SAME 有权
标题翻译：树脂组合物和使用该组合物的多层结构
公开(公告)号：EP2275481B1
公开(公告)日：2012-05-23
申请号：EP10729268.2
申请日：2010-03-29
申请人： Kuraray Co., Ltd.
发明人： KAZETO, Osamu
IPC分类号： C08L23/00 , C08L23/02 , C08L23/08 , C08J3/22 , C08K5/01 , C08K5/098 , C08L29/04
CPC分类号： C08J3/226 , B29C47/065 , B29K2023/0633 , B29K2023/083 , B29K2023/086 , C08J3/005 , C08J2323/12 , C08J2423/00 , C08J2423/06 , C08J2423/08 , C08J2429/04 , C08J2431/00 , C08J2431/04 , C08K5/098 , C08L23/02 , C08L23/06 , C08L23/0853 , C08L23/0861 , C08L23/12 , C08L29/04 , C08L2205/02 , C08L2205/035 , C08L2205/06 , C08L2205/08 , C08L2207/066 , C08L2310/00 , C08L2666/02 , Y10T428/31928
摘要： Aresincomposition, comprising: a polyolefin (A) ; a saponified ethylene-vinyl acetate copolymer (EVOH) (B) having an ethylene content of 20 to 65 mol% and having a degree of saponification of vinyl acetate units of 96% or more; a higher fatty acid metal salt (C) having 8 to 22 carbon atoms; a conjugated polyene compound (D) having a boiling point of 20°C or higher; an ethylene-vinyl acetate copolymer (E); and a saponified ethylene-vinyl acetate copolymer (F) having an ethylene content of 68 to 98 mol% and having a degree of saponification of vinyl acetate units of 20% or more, wherein the mass ratio (A : B) of the polyolefin (A) and the EVOH (B) is 60 : 40 to 99.9 : 0.1, the amount of the higher fatty acid metal salts (C) is in the range of 0.0001 to 10 parts by mass per 100 parts by mass of the total of the polyolefin (A) and the EVOH (B), the amount of conjugated polyene compound (D) is in the range of 0. 000001 to 1 part by mass, and the total amount of the ethylene-vinyl acetate copolymer (E) and the saponified ethylene-vinyl acetate copolymer (F) is 0.3 part by mass or more. This enables improvement of poor appearance of a molded article caused by insufficient dispersion of the EVOH (B) at the time of melt molding a resin composition comprising the polyolefin (A) and the EVOH (B).
摘要翻译：本发明提供一种树脂组合物，其含有聚烯烃（A），乙烯含量为20〜65摩尔％，乙酸乙烯酯单元的皂化度为96％以上的乙烯 - 乙酸乙烯酯共聚物（B）乙烯 - 乙酸乙烯酯共聚物，高级脂肪酸（C）的C 8-22金属盐，沸点为20℃或更高的共轭多烯化合物（D），乙烯 - 乙酸乙烯酯共聚物（E）和皂化乙烯 - 乙烯基乙烯含量为68〜98摩尔％，乙酸乙烯酯单元的皂化度为20％以上的乙酸乙烯酯共聚物（F），其中，聚烯烃（A）与EVOH的质量比（A:B）（B）为60：40-99.9：0.1。该树脂组合物含有高级脂肪酸（C）的金属盐0.0001〜10质量份，共轭多烯化合物（D）0.000001〜1质量份，以及总计0.3质量份乙烯 - 乙酸乙烯酯共聚物（E）和皂化的乙烯 - 乙酸乙烯酯共聚物（F）合并，每100质量份聚烯烃（A）和EVOH（B）合并。其结果是，在将由聚烯烃（A）和EVOH（B）构成的树脂组合物熔融成型时，EVOH（B）的分散不良所导致的成型体外观上的缺陷得到改善。

4. 发明公开

EP4372017A2 POLYVINYL ALCOHOL RESIN FILM, METHOD FOR DISCRIMINATING POLYVINYL ALCOHOL RESIN FILM, AND METHOD FOR MANUFACTURING POLYVINYL ALCOHOL RESIN FILM 审中-实审
公开(公告)号：EP4372017A2
公开(公告)日：2024-05-22
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： C08F218/08
CPC分类号： C08F8/12 , B65D65/46 , C08J5/18 , Y02W90/10 , G01N33/442 , G01N2223/62320130101 , 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.

5. 发明公开

EP4173988A1 WATER-SOLUBLE FILM AND PACKAGING 审中-实审
公开(公告)号：EP4173988A1
公开(公告)日：2023-05-03
申请号：EP21831690.9
申请日：2021-06-14
申请人： Kuraray Co., Ltd.
发明人： OKAMOTO, Minoru , SHIMIZU, Sayaka , KAZETO, Osamu
IPC分类号： B65D65/46 , C08K5/053 , C08L29/04 , C08J5/18
摘要： [Problem to be solved] To provide a water-soluble film capable of which is excellent in water solubility and less likely to cause problems such as breakage of packaging material during storage and transportation by controlling the crystal long period structure of the PVA molecule and, for example, the degree of phase separation state between PVA and other components in the water-soluble film.
[Solution] A water-soluble film of the present invention is a water-soluble film containing a polyvinyl alcohol based resin, wherein small-angle X-ray scattering (SAXS) measurement is performed on the water-soluble film in a mixed liquid of water and methanol at a volume ratio of 2:8 and when a scattering intensity at a scattering vector value determined from a obtained scattering intensity profile (q value) of 0.2 nm -1 is defined as I(0.2) and a scattering intensity at the q value of 0.5 nm -1 is defined as 1(0.5), an intensity ratio (I(0.5)/I(0.2)) of the scattering intensity I(0.5) to the scattering intensity I(0.2) is 0.05 to 0.5.

6. 发明授权

EP2554592B1 RESIN COMPOSITION, MOLDED ARTICLE, MULTILAYERED PIPE AND METHOD FOR PRODUCING THE SAME 有权
标题翻译： KUNSTZHARZZUSAMMENSETZUNG，形物品，多层管及其制造方法
公开(公告)号：EP2554592B1
公开(公告)日：2016-02-24
申请号：EP11765636.3
申请日：2011-03-30
申请人： Kuraray Co., Ltd.
发明人： KAZETO, Osamu , HIROSE, Wataru
IPC分类号： C08L29/04 , C08K5/00 , C08K5/01 , C08K5/09 , C08K5/13 , C08K5/3432 , F16L9/14 , F16L11/04
CPC分类号： C08K5/09 , B29C44/1228 , B29C47/0023 , B29C47/06 , B29K2023/086 , B29K2075/00 , B29K2105/04 , B29K2995/0067 , B29L2023/225 , B32B1/08 , B32B5/18 , B32B27/306 , B32B2266/0278 , B32B2307/304 , B32B2307/714 , B32B2307/7242 , B32B2597/00 , C08K5/005 , C08K5/20 , C08K2201/008 , F16L9/14 , F16L59/14 , Y10T428/1376 , Y10T428/1393 , C08L29/04 , C08L23/0861
摘要： An object of the present invention is to provide a multilayered pipe having a layer comprising a resin composition containing EVOH, which is unlikely to exhibit the occurrence of cracking in the EVOH layer due to oxidative degeneration and has excellent gas barrier property even during long-term usage at high temperatures, and also to provide a resin composition for obtaining the multilayered pipe. The present invention relates to a resin composition containing 0.001 to 5 parts by mass of an antioxidant (B) and 0.00001 to 0.3 parts by mass of a conjugated polyene compound (C) having a molecular weight of 1000 or less, relative to 100 parts by mass of an ethylene-vinyl alcohol copolymer (A).

7. 发明公开

EP2263869A1 GAS-BARRIER FILM AND PROCESS FOR PRODUCING THE SAME 有权转让
标题翻译： GASSPERRFOLIE UND HERSTELLUNGSVERFAHRENDAFÜR
公开(公告)号：EP2263869A1
公开(公告)日：2010-12-22
申请号：EP09729051.4
申请日：2009-03-31
申请人： Kuraray Co., Ltd. , Topy Kogyo Kabushiki Kaisha
发明人： KAZETO, Osamu , NANBA, Michiyuki , OHTA, Shun-ichi , ITOH, Takafumi
IPC分类号： B32B27/18 , B32B27/30 , C08J7/04 , C08K3/34 , C08L29/04
CPC分类号： C08K3/34 , C08J7/047 , C08J2329/04 , C08J2429/00 , C08K2201/008 , Y10T428/24628 , Y10T428/259
摘要： Provided is a gas barrier film including a layer of a resin composition (C) on at least one side of a substrate (D), wherein the resin composition (C) contains a water soluble or water dispersible polymer (A) and a swellable inorganic layered silicate (B), where the swellable inorganic layered silicate (B) satisfying expressions (1) and (2) below is used. 11.0 ≥ D ≥ 2.0 µm (1), σ ≥ 1.8 µm (2), wherein D and σ are a logarithmic average particle diameter of the swellable inorganic layered silicate (B) measured by laser diffraction and standard deviation of a particle size distribution thereof, respectively. This provides a gas barrier film including a resin composition layer, with a swellable inorganic layered silicate dispersed therein, having an extremely excellent gas barrier property and a method of producing a multilayer barrier film having the resin composition layer with extremely less irregularities on a surface thereof.
摘要翻译：本发明提供一种在基材（D）的至少一面上具有树脂组合物（C）层的阻气膜，其中，所述树脂组合物（C）含有水溶性或水分散性聚合物（A）和溶胀性无机物层状硅酸盐（B），其中使用满足下述式（1）和（2）的可溶胀无机层状硅酸盐（B）。 11.0‰¥D‰¥2.0μm（1）Ã¥1.8μm（2）其中D和Ã是通过激光衍射测量的可膨胀无机层状硅酸盐（B）的对数平均粒径和颗粒的标准偏差尺寸分布。这提供了一种阻气膜，其包括具有分散在其中的可膨胀的无机层状硅酸盐的具有非常优异的阻气性的树脂组合物层和制备其表面上具有极少凹凸的树脂组合物层的多层阻挡膜的方法。

8. 发明公开

EP4071080A1 POLYVINYL ALCOHOL RESIN FILM, METHOD FOR IDENTIFYING POLYVINYL ALCOHOL RESIN FILM, AND METHOD FOR PRODUCING POLYVINYL ALCOHOL RESIN FILM 审中-实审
公开(公告)号：EP4071080A1
公开(公告)日：2022-10-12
申请号：EP21880207.2
申请日：2021-10-14
申请人： Kuraray Co., Ltd.
发明人： KAZETO, Osamu , INUBUSHI, Yasutaka
IPC分类号： B65D65/46 , C08F8/12 , C08J5/18
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. Provided is a method for easily and reliably discriminating a manufacturer of a PVA film.
The present invention is a polyvinyl alcohol resin film comprising a polyvinyl alcohol resin (A), wherein an abundance ratio of carbon 14 ( 14 C) in total carbon constituting the polyvinyl alcohol resin (A), that is, 14 C/C is 1.0 × 10 -14 or more. The present invention is a method for discriminating a polyvinyl alcohol resin film, the method comprising discriminating a polyvinyl alcohol resin film containing a polyvinyl alcohol resin (Ab) in which all or a part of carbon is derived from bio-derived ethylene (Bb) from a polyvinyl alcohol resin film containing only a polyvinyl alcohol resin (Ap) derived only from fossil fuel-derived ethylene (Bp) by measuring an abundance ratio 14 C/C of carbon 14 ( 14 C) in total carbon.

9. 发明公开

EP3904232A1 WATER-SOLUBLE FILM AND PACKAGE 有权
公开(公告)号：EP3904232A1
公开(公告)日：2021-11-03
申请号：EP19905828.0
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 film capable of inhibiting sticking between the films while maintaining excellent water solubility 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 Fd1 ≤ 0.65 and Fd1/Fg1

10. 发明公开

EP3904036A1 WATER-SOLUBLE FILM AND PACKAGING MATERIAL 审中-实审
公开(公告)号：EP3904036A1
公开(公告)日：2021-11-03
申请号：EP19902016.5
申请日：2019-12-27
申请人： Kuraray Co., Ltd.
发明人： OKAMOTO, Minoru , SHIMIZU, Sayaka , KAZETO, Osamu , ASADA, Mitsunori
IPC分类号： B29C41/24 , B29K29/00 , B29L7/00 , B65D65/46 , C08J5/18
摘要： A water-soluble film is provided that is capable of achieving deformation resistance during pouch storage as well as excellent water solubility of the film and excellent reduction in undissolved residues. A water-soluble film includes a polyvinyl alcohol-based resin, wherein a crystal long period Ds obtained from an X-ray profile obtained by small-angle X-ray scattering measurement in a water/methanol mixed solvent (volume ratio: 2/8) is from 10.0 to 30.0 nm and a rate of increase (DS - Da)/Da of the crystal long period Ds to a crystal long period Da obtained by small-angle X-ray scattering measurement before immersion in the solvent is 30% or more and 130% or less.

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