公开(公告)号：US20220177733A1

公开(公告)日：2022-06-09

申请号：US17601232

申请日：2020-04-02

Applicant: KURARAY CO., LTD.

Inventor： Yoriko IMAOKA ,  Keisuke MORIKAWA ,  Tatsuya TANIDA

IPC: C09J4/06 ,  C09J11/08 ,  C09J11/06 ,  C09J129/04

Abstract: An aqueous emulsion may include an ethylene-vinyl alcohol copolymer (A) as a dispersant and a polymer (B) which contains an ethylenically unsaturated monomer unit as a dispersoid, wherein the ethylene-vinyl alcohol copolymer (A) has an ethylene unit content of 1 mol % or more and less than 20 mol %; and a crystallinity in water at 30° C. (Cw (30° C.)) and a crystallinity in water at 70° C. (Cw (70° C.)) as determined by pulse NMR satisfying formula (I). Such aqueous emulsions can form fewer aggregates and exhibit excellent water-resistant adhesiveness and excellent film formability.

公开(公告)号：US20170226247A1

公开(公告)日：2017-08-10

申请号：US15519192

申请日：2015-10-16

Applicant: KURARAY CO., LTD.

Inventor： Yosuke KUMAKI ,  Ayumu YAMAMOTO ,  Tatsuya TANIDA

IPC: C08F216/06 ,  D21H19/20 ,  D21H27/00 ,  C09J7/04 ,  C09D129/04

CPC classification number: C08F216/06 ,  C08F16/06 ,  C09D129/04 ,  C09J7/201 ,  C09J7/21 ,  C09J2400/28 ,  C09J2429/005 ,  C09J2483/00 ,  D21H19/20 ,  D21H27/00 ,  D21H27/001

Abstract: There is provided a vinyl alcohol-based polymer having an ethylenic double bond with a saponification degree of 70 mol % or more, wherein the vinyl alcohol-based polymer is water-soluble; a molar ratio of the ethylenic double bond to the total of vinyl alcohol units and vinyl acetate units is 0.05/100 to 2/100; and a limiting viscosity [η] and a weight-average molecular weight Mw of a vinyl ester-based polymer which is produced by esterifying the vinyl alcohol-based polymer satisfy the following formulas (1) and (2). 4.7≦log Mw 6.3   (1) 0.60

公开(公告)号：US20170275394A1

公开(公告)日：2017-09-28

申请号：US15514288

申请日：2015-09-18

Applicant: KURARAY CO., LTD.

Inventor： Yoko MORI ,  Masaki KATO ,  Tatsuya TANIDA

IPC: C08F8/12 ,  B65D65/46 ,  C11D17/04 ,  C08K5/053 ,  C08J5/18

Abstract: The present invention provides: a water-soluble film that is superior in cold water solubility and in practical properties such as strength and stiffness and that can resist deterioration in various properties such as chemical resistance over time; and a modified polyvinyl alcohol used for the water-soluble film. The present invention relates to a modified polyvinyl alcohol containing 0.05 to 10 mol % of a monomer unit having two carboxyl groups. In 1H-NMR spectroscopy of the modified polyvinyl alcohol, an integral (X) from 6.8 to 7.2 ppm and an integral (Y) from 5.3 to 5.5 ppm satisfy the following expression: 0.60≦X/(X+Y)

公开(公告)号：US20160319048A1

公开(公告)日：2016-11-03

申请号：US15108155

申请日：2014-12-25

Applicant: KURARAY CO., LTD.

Inventor： Masaki KATO ,  Keishi HACHIYA ,  Tatsuya TANIDA ,  Keisuke MORIKAWA ,  Yusuke AMANO

IPC: C08F8/12 ,  C08F116/06

CPC classification number: C08F8/12 ,  C08F116/06 ,  C08F216/06 ,  C08F2800/10 ,  C08F218/08 ,  C08F218/12 ,  C08F216/04 ,  C08F216/08

Abstract: Provided is a modified polyvinyl alcohol containing 0.1 to 10 mol % of a monomer unit represented by formula (1) below and having a degree of polymerization exceeding 2000. This provides a modified polyvinyl alcohol an aqueous solution of which foams less and which has excellent film strength and gas barrier properties under high humidity conditions, while having excellent water solubility. [In formula (1), R1 represents a hydrogen atom or a methyl group.]

Abstract translation: [式（1）中，R 1表示氢原子或甲基。]

公开(公告)号：US20160083490A1

公开(公告)日：2016-03-24

申请号：US14785173

申请日：2014-04-17

Applicant: KURARAY CO., LTD.

Inventor： Yosuke KUMAKI ,  Tatsuya TANIDA

IPC: C08F218/08 ,  C08J3/00

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.

Abstract translation: 本发明提供一种乙烯醇类共聚物，其通过皂化乙酸乙烯酯和多官能单体的共聚物而得到，其中多官能单体在其分子中含有两个或更多个烯属双键，乙烯醇系共聚物具有含有烯属 双键和乙烯基双键与乙烯醇单元和乙酸乙烯酯单元的总摩尔比（d）为0.05 / 100〜2/100，乙烯醇系共聚物为水溶性。

公开(公告)号：US20220153891A1

公开(公告)日：2022-05-19

申请号：US17603699

申请日：2020-04-13

Applicant: KURARAY CO., LTD.

Inventor： Tadahito FUKUHARA ,  Tatsuya TANIDA

IPC: C08F216/06 ,  C08F8/12 ,  C08F6/10 ,  C08F2/01 ,  C08L23/08 ,  C08K3/34 ,  C08K3/22 ,  C09J129/04 ,  C09D129/04

Abstract: An ethylene-vinyl alcohol copolymer may have an ethylene unit content of 1 mol % or more and less than 15 mol %, a saponification degree of 85 mol % or more and less than 99.9 mol %, and a viscosity-average degree of polymerization of 200 or more and less than 3000. The copolymer may contain a molecule containing a structure (I) Y being H or —CH3, at an end; and a molecule containing a structure (II) Z being H or —CH3, at an end, a total content of the structure (I) and the structure (II) in all monomer units is 0.001 mol % or more and less than 0.1 mol %, and a molar ratio R [I/(I+II)] of the structure (I) to the total of the structure (I) and the structure (II) satisfies formula (1): R

公开(公告)号：US20210009842A1

公开(公告)日：2021-01-14

申请号：US17041807

申请日：2019-03-25

Applicant: KURARAY CO., LTD.

Inventor： Keisuke MORIKAWA ,  Tatsuya TANIDA ,  Yuta TAOKA

IPC: C09D129/04 ,  C09D133/02 ,  C09J129/04 ,  C09J133/02 ,  C08K3/013 ,  C08K5/00 ,  D21H19/20

Abstract: The present invention provides a coating agent having a reduced methanol content, an adhesive including the coating agent and excellent in coating performance and adhesiveness, and a coated product including the coating agent and excellent in water resistance and alcohol resistance. The present invention relates to a coating agent comprising a modified vinyl alcohol polymer (A), the modified vinyl alcohol polymer (A) comprising a structural unit derived from a derivative (a) of an ethylenically unsaturated dicarboxylic acid in a content (X) of 0.05 mol % or more and 10 mol % or less, having a degree of saponification of 80.0 mol % or more and 99.9 mol % or less, having a methanol content of less than 3.0 mass % as measured by headspace gas chromatography, and having an amount of 0.1 ppm or more and less than 2,000 ppm of a component insoluble in a 90° C., 5 mass % aqueous solution.

公开(公告)号：US20200299435A1

公开(公告)日：2020-09-24

申请号：US16756243

申请日：2018-10-16

Applicant: KURARAY CO., LTD

Inventor： Tatsuya TANIDA ,  Keisuke MORIKAWA ,  Masato NAKAMAE ,  Seisuke INADA

IPC: C08F216/06 ,  C09D129/04

Abstract: The present invention relates to ethylene-vinyl alcohol copolymer particles, comprising an ethylene-vinyl alcohol copolymer having an ethylene unit content of 1 mol % or more and less than 20 mol %, a viscosity-average polymerization degree of 200 to 5000, and a saponification degree of 80 to 99.99 mol %, wherein a crystallinity in water Cw (30° C.) at 30° C. and a crystallinity in water Cw (70° C.) at 70° C. as determined by pulse NMR satisfy formula (I). There is thus provided ethylene-vinyl alcohol copolymer particles having excellent solubility in water and excellent gas barrier performance.

公开(公告)号：US20200157390A1

公开(公告)日：2020-05-21

申请号：US16625355

申请日：2018-06-21

Applicant: KURARAY CO., LTD.

Inventor： Yoriko IMAOKA ,  Keisuke MORIKAWA ,  Tatsuya TANIDA

IPC: C09J131/04 ,  C08F118/08 ,  C08F220/34 ,  C08F220/06 ,  C09J133/14 ,  C09J133/02 ,  C08L31/04 ,  C08L33/14 ,  C08L33/02

Abstract: The present invention provides an aqueous emulsion that excels in heat resistance, water resistance (particularly, hot water resistance and boiling resistance), and viscosity stability. The present invention relates to an aqueous emulsion comprising an ethylenically unsaturated monomer unit-containing polymer (A) as a dispersoid and a vinyl alcohol polymer (B) as a dispersant, wherein the ethylenically unsaturated monomer unit-containing polymer (A) comprises: a structural unit derived from a radical-polymerizable ethylenically unsaturated monomer (p) having a functional group represented by the following general formula (P); and a structural unit derived from a radical-polymerizable ethylenically unsaturated monomer (q) having a functional group represented by the following general formula (Q), wherein X and Y are the same or different, and each represent an oxygen atom or a sulfur atom, Z is an oxygen atom or a nitrogen atom, * represents a bond, and m is 1 or 2.

公开(公告)号：US20180186993A1

公开(公告)日：2018-07-05

申请号：US15739911

申请日：2016-06-24

Applicant: KURARAY CO., LTD.

Inventor： Tatsuya TANIDA ,  Keisuke MORIKAWA

IPC: C08L31/04 ,  C09D5/02 ,  C09D131/04 ,  C09D133/12 ,  C09J9/00 ,  C09J131/04 ,  C09J133/12 ,  D21H21/14 ,  D21H17/00 ,  C08L33/12

CPC classification number: C08L31/04 ,  C08F2/30 ,  C08F8/00 ,  C08F218/08 ,  C08F261/04 ,  C08G81/00 ,  C08K5/092 ,  C08L33/12 ,  C08L35/00 ,  C08L2201/08 ,  C08L2201/52 ,  C08L2205/03 ,  C09D5/02 ,  C09D5/022 ,  C09D7/65 ,  C09D131/04 ,  C09D133/12 ,  C09J9/00 ,  C09J131/04 ,  C09J133/12 ,  D21H17/36 ,  D21H17/72 ,  D21H19/20 ,  D21H19/60 ,  D21H21/14 ,  D21H21/16 ,  D21H21/18 ,  C08F216/18 ,  C08F220/58 ,  C08F216/04 ,  C08F216/38 ,  C08K5/1539 ,  C08L29/04 ,  C08L23/22 ,  C08L35/02

Abstract: The present invention provides an aqueous emulsion composition excellent in heat resistance, water resistance, hot water resistance, boiling water resistance, and viscosity stability and also excellent in stain resistance. The present invention relates to an aqueous emulsion composition including an aqueous emulsion (D) and a cyclic acid anhydride (E). The aqueous emulsion (D) includes a polymer (X) having an ethylenically unsaturated monomer (B), a polyvinyl alcohol resin (A), and water. At least one selected from the polyvinyl alcohol resin (A) and the polymer (X) has, in a main chain thereof, a structural unit derived from a monomer (C) represented by the following formula (I), (II), (III), or (IV). (The definitions of the symbols in the formulae are omitted.)