公开(公告)号：US20240309248A1

公开(公告)日：2024-09-19

申请号：US18658494

申请日：2024-05-08

Applicant: KURARAY CO., LTD.

Inventor： Tadahito Fukuhara ,  Tatsuya Tanida

IPC: C09J129/04 ,  C08F8/12 ,  C08F210/02 ,  C08F216/06 ,  C08F218/08 ,  C08K3/34 ,  C08K5/098 ,  C08L29/04

CPC classification number: C09J129/04 ,  C08F210/02 ,  C08F216/06 ,  C08F218/08 ,  C08K5/098 ,  C08L29/04 ,  C08F8/12 ,  C08K3/346

Abstract: The present invention provides a resin material that comprises an ethylene-modified vinyl alcohol polymer as a main component, and that excels in hue, water solubility, and aqueous-solution viscosity stability. The present invention also provides an aqueous solution and an adhesive comprising such a resin material. The present invention relates to a resin material comprising an ethylene-modified vinyl alcohol polymer and sodium acetate, wherein:



the ethylene-modified vinyl alcohol polymer has an ethylene unit content of 1 10 mol % or more and less than 15 mol %, a viscosity-average degree of polymerization of 200 or more and less than 3,000, and a degree of saponification of 80 mol % or more and less than 99.9 mol %, and comprises 0.0005 mol % or more and 0.10 mol % or less of a propyl group at one end of the polymer, and
the sodium acetate content is 0.05 mass % or more and less than 2 mass %.

公开(公告)号：US20240101739A1

公开(公告)日：2024-03-28

申请号：US18274781

申请日：2022-09-27

Applicant: LG Chem, Ltd.

Inventor： Sungjin Song ,  Se Won Baek ,  Hyojin Bae ,  Bongjune Kim

IPC: C08F216/06

CPC classification number: C08F216/06

Abstract: A preparation method for an ethylene-vinyl alcohol copolymer capable of obtaining a high-purity ethylene-vinyl alcohol copolymer without an excessive washing process is described herein. According to the present disclosure, an efficiency of the washing process for obtaining the ethylene-vinyl alcohol copolymer after performing saponification on ethylene-vinyl acetate can be increased, thereby improving productivity, and minimizing the amount of wastewater generated.

公开(公告)号：US11851607B2

公开(公告)日：2023-12-26

申请号：US17187542

申请日：2021-02-26

Applicant: KURARAY CO., LTD.

Inventor： Yasuhiro Tajima

IPC: C08F216/06 ,  C09K8/508

CPC classification number: C09K8/5083 ,  C08F216/06 ,  C08F2800/10 ,  C08F2810/00

Abstract: Provided are a polyvinyl alcohol-based resin having an excellent plugging effect and a plugging agent for underground treatment. A polyvinyl alcohol-based resin is disclosed, in which a degree of swelling (%) when the polyvinyl alcohol-based resin is immersed in water at 40° C. for 30 minutes and a solubility (%) when the polyvinyl alcohol-based resin is immersed in water at 65° C. for 5 hours satisfy the degree of swelling/the solubility≥3.0.

公开(公告)号：US20230187641A1

公开(公告)日：2023-06-15

申请号：US18078214

申请日：2022-12-09

Applicant: SK Innovation Co., Ltd. ,  SK On Co., Ltd.

Inventor： Dong Gun Lee ,  Gwi Ok Park ,  Seok Keun Yoo ,  Min Kyung Seon ,  Jun Soo Son ,  Ju Ho Chung

IPC: H01M4/62 ,  C08F216/06 ,  C08F220/06 ,  C08K5/17

CPC classification number: H01M4/622 ,  C08F216/06 ,  C08F220/06 ,  C08K5/17

Abstract: Provided are a novel binder for a secondary battery including a copolymer containing specific repeating units, and a binder composition for a secondary battery including the binder for a secondary battery and a compound containing an amine group and a hydroxyl group. When the binder for a secondary battery or the binder composition for a secondary battery is applied to a negative electrode and a secondary battery, expansion of the negative electrode is effectively suppressed, and the charge/discharge cycle characteristics and the performance of the secondary battery are significantly improved. Furthermore, the binder for a secondary battery has improved coatability and adhesion to effectively suppress the exfoliation and desorption of the negative electrode, thereby improving the performance of the secondary battery.

公开(公告)号：US11641853B2

公开(公告)日：2023-05-09

申请号：US16641002

申请日：2018-08-24

Applicant: KURARAY CO., LTD.

Inventor： Keisuke Morikawa ,  Taeko Kaharu

IPC: A01N25/24 ,  C08F216/06 ,  C08F16/06 ,  C08L23/08

CPC classification number: A01N25/24 ,  C08F16/06 ,  C08F216/06 ,  C08L23/0846 ,  C08F2800/10

Abstract: The present invention provides a spreading agent for agrochemicals having excellent spreadability particularly against surfaces of plant leaves. The present invention also provides an agrochemical spray solution comprising the spreading agent for agrochemicals, and that shows excellent storage stability (particularly viscosity stability) even during long storage. The present invention relates to a spreading agent for agrochemicals that comprises an ethylene-modified vinyl alcohol polymer (A) having an ethylene unit content of 1.0 mol % to 19 mol %, a 1,2-glycol linkage unit content of 1.2 mol % to 2.0 mol %, a viscosity-average degree of polymerization of 200 to 5,000, and a degree of saponification of 80 mol % to 99.9 mol %.

公开(公告)号：US20190203005A1

公开(公告)日：2019-07-04

申请号：US16235753

申请日：2018-12-28

Applicant: KURARAY CO., LTD.

Inventor： Wataru Hirose ,  Edgard Chow

IPC: C08J7/04 ,  C08F216/06 ,  C08J5/18 ,  B32B27/30 ,  B32B27/08 ,  B32B7/12 ,  B32B27/18 ,  B32B27/32

CPC classification number: C08J7/042 ,  B32B7/12 ,  B32B27/08 ,  B32B27/18 ,  B32B27/306 ,  B32B27/32 ,  B32B2250/05 ,  B32B2250/246 ,  B32B2250/40 ,  B32B2307/73 ,  C08F216/06 ,  C08F2800/20 ,  C08J5/18 ,  C08J2329/04

Abstract: A multilayer article (such as a film) suitable for use as a fumigation barrier, the multilayer article comprising at least one an ethylene vinyl alcohol (EVOH) based barrier layer formed from a resin composition predominantly comprising an EVOH component of one or more specific types of ethylene-vinyl alcohol copolymers as described herein.

公开(公告)号：US20190202952A1

公开(公告)日：2019-07-04

申请号：US16294397

申请日：2019-03-06

Applicant: THE NIPPON SYNTHETIC CHEMICAL INDUSTRY CO., LTD.

Inventor： Daichi NISHIMURA ,  Makoto HATANAKA ,  Shintaro USUI

IPC: C08F216/06 ,  B29C48/00 ,  B29C48/14 ,  B29C48/285 ,  B29C48/08 ,  C08J3/12

CPC classification number: C08F216/06 ,  B29B9/12 ,  B29C48/022 ,  B29C48/08 ,  B29C48/144 ,  B29C48/288 ,  B29K2031/00 ,  B29K2105/251 ,  C08F2800/10 ,  C08J3/12

Abstract: A molding material comprising a pellet group of at least 20 saponified ethylene-vinyl ester-based copolymer pellets, wherein at least 95% of the pellets have a surface that is substantially a single closed surface, and when a maximum outer diameter of a pellet is taken as a long diameter and a minimum diameter in a cross section having the greatest area among the cross sections perpendicular to the long diameter is taken as a short diameter, the average value of the long diameter/short diameter ratio of at least 20 pellets taken from the pellet group is 1.6 or less and the standard deviation of the long diameter/short diameter ratio of the at least 20 pellets is 0.13 or less.

公开(公告)号：US20180258197A1

公开(公告)日：2018-09-13

申请号：US15976893

申请日：2018-05-11

Applicant: KURARAY CO., LTD.

Inventor： Masahiro TAKAFUJI ,  Masaki KATO ,  Yoko MORI

IPC: C08F8/12 ,  C08J5/18

CPC classification number: C08F8/12 ,  C08F8/16 ,  C08F2220/585 ,  C08J5/18 ,  C08J2329/04 ,  C09D129/04 ,  C08F216/06 ,  C08F220/56 ,  C08L29/04 ,  C08K5/053 ,  C08L3/08 ,  C08F218/08 ,  C08F218/06

Abstract: A modified PVA that enables formation of a film superior in cold water solubility, mechanical strength, and chemical resistance is provided. The modified PVA comprises a monomer unit represented by formula (I), and a structural unit represented by formula (II): wherein: a content of the monomer unit (I) is from 0.05 mol % to 10 mol %, and a content of the structural unit (II) is from 0.001 mol % to 0.5 mol % with respect to the total monomer units in the modified PVA; a viscosity average degree of polymerization is from 300 to 3,000; and a degree of saponification is from 82 mol % to 99.5 mol %. In the formula (I): R1 represents a hydrogen atom, or a methyl group; and R2 represents —R3—SO3−X+, —R3—N+(R4)3Cl−, or a hydrogen atom, R3 representing an alkanediyl group, X+ representing a hydrogen atom, a metal atom, or an ammonium group, and R4 representing an alkyl group.

公开(公告)号：US10005931B2

公开(公告)日：2018-06-26

申请号：US14290991

申请日：2014-05-30

Applicant: Abdulaziz Nasser Alsoryai

Inventor： Abdulaziz Nasser Alsoryai

IPC: C09J129/04 ,  C08F216/06 ,  C08F218/08 ,  C09J4/06 ,  D05C17/02 ,  C09J11/04 ,  C09J11/06 ,  D06N7/00 ,  C08K3/26 ,  C08K5/00 ,  C08K5/41 ,  C08K3/30

CPC classification number: C09J129/04 ,  C08F216/06 ,  C08F218/08 ,  C08K3/26 ,  C08K5/0058 ,  C08K5/41 ,  C08K2003/262 ,  C08K2003/3045 ,  C09J4/06 ,  C09J11/04 ,  C09J11/06 ,  D05C17/02 ,  D06N7/0073 ,  C08K13/02

Abstract: The invention provides carpet bonding agents with improved flow properties and improved strength and physical properties when compared to conventional binder systems for carpets. Thus, in various embodiments, the invention provides an adhesive formulation comprising a carpet latex formulation; a plasticized carpet latex; a waterproof additive; a defoamer; and an antibacterial. The invention also provides uses of the materials and combinations of the materials described herein.

公开(公告)号：US09951161B2

公开(公告)日：2018-04-24

申请号：US14785173

申请日：2014-04-17

Applicant: KURARAY CO., LTD.

Inventor： Yosuke Kumaki ,  Tatsuya Tanida

IPC: C08F218/08 ,  C08F216/06 ,  C08F8/12 ,  C08J3/00 ,  C08F114/06 ,  C08F2/00 ,  C08F290/06 ,  C08F14/06

CPC classification number: C08F218/08 ,  C08F2/005 ,  C08F8/12 ,  C08F14/06 ,  C08F114/06 ,  C08F216/06 ,  C08F216/125 ,  C08F290/062 ,  C08F2800/10 ,  C08J3/00 ,  C08J2331/04 ,  C08F236/20 ,  C08F2/20

Abstract: Provided is a vinyl alcohol-based copolymer, obtained by saponifying a copolymer of vinyl acetate and a polyfunctional monomer, wherein the polyfunctional monomer contains two or more ethylenic double bonds in its molecule, the vinyl alcohol-based copolymer has a side chain containing an ethylenic double bond and a molar ratio (d) of the ethylenic double bond to a total of vinyl alcohol units and vinyl acetate units is from 0.05/100 to 2/100, and the vinyl alcohol-based copolymer is water soluble.