公开(公告)号：US20160251466A1

公开(公告)日：2016-09-01

申请号：US15021305

申请日：2014-09-11

Applicant: KURARAY CO., LTD.

Inventor： Masaki KATO ,  Hideki MAKI ,  Keishi HACHIYA ,  Masako KAWAGOE ,  Yoko MORI

IPC: C08F216/06 ,  B41M5/52 ,  D21H27/00 ,  D06M15/333 ,  C09D129/04 ,  D21H19/20

CPC classification number: C08F216/06 ,  B41M5/337 ,  B41M5/5254 ,  B41M2205/02 ,  B41M2205/32 ,  B65D65/42 ,  C08F8/12 ,  C08F16/00 ,  C09D129/04 ,  D06M15/333 ,  D21H17/36 ,  D21H19/20 ,  D21H19/60 ,  D21H21/16 ,  D21H27/001 ,  D21H27/10

Abstract: Provided by the present invention is a PVA having highly harmonized adequate water solubility, thickening property and coating film strength, and having superior storage stability in terms of the viscosity in an aqueous solution. A vinyl alcohol polymer having a ratio (Mw (A)/Mn (A)) of the weight average molecular weight (Mw (A)) to the number average molecular weight (Mn (A)) of 3 or greater and 8 or less, and being capable of giving a vinyl alcohol polymer having a ratio (Mw/Mn) of a weight average molecular weight (Mw) to a number average molecular weight (Mn) of 2 or greater and less than 3 when treated at 40 ° C. for 1 hour in a sodium hydroxide solution.

Abstract translation: 本发明提供一种具有高度协调的足够的水溶性，增稠性和涂膜强度的PVA，并且在水溶液中的粘度方面具有优异的储存稳定性。 重均分子量（Mw（A））与数均分子量（Mn（A））的比（Mw（A）/ Mn（A））为3以上且8以下的乙烯醇系聚合物 并且能够在40℃下处理时能够得到重均分子量（Mw）与数均分子量（Mn）的比（Mw / Mn）为2以上且小于3的乙烯醇聚合物 在氢氧化钠溶液中1小时。

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：US20170298155A1

公开(公告)日：2017-10-19

申请号：US15517591

申请日：2015-10-06

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

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：US20170306112A1

公开(公告)日：2017-10-26

申请号：US15517749

申请日：2015-10-06

Applicant: KURARAY CO., LTD.

Inventor： Masahiro TAKAFUJI ,  Masaki KATO ,  Yoko MORI

IPC: C08J5/18 ,  B65D65/46 ,  C08K5/17 ,  C08K5/42

CPC classification number: C08J5/18 ,  B65D65/46 ,  C08J2329/04 ,  C08K5/17 ,  C08K5/19 ,  C08K5/42 ,  C08L29/04

Abstract: A resin composition that enables formation of a film superior in cold water solubility, mechanical strength, and chemical resistance is provided. The resin composition comprises a modified PVA comprising a monomer unit represented by formula (I), and an amine compound represented by formula (II): a content of the amine compound with respect to 100 parts by mass of the modified PVA being from 0.01 parts by mass to 1 part by mass. In the formula (I), R1 represents a hydrogen atom, or an alkyl group having 1 to 8 carbon atoms; and R2 represents —R3—SO3−X+, —R3—N+(R4)3Cl−, or a hydrogen atom, R3 representing an alkanediyl group having 1 to 10 carbon atoms, X+ representing a hydrogen atom, a metal atom, or an ammonium group, and R4 representing a linear or branched alkyl group having 1 to 5 carbon atoms. In the formula (II), R5 represents —R3′—SO3−X+, —R3′—N+(R4′)3Cl−, or a hydrogen atom.

公开(公告)号：US20160340456A1

公开(公告)日：2016-11-24

申请号：US15108191

申请日：2014-12-24

Applicant: KURARAY CO., LTD.

Inventor： Yoko MORI ,  Masaki KATO

IPC: C08F216/06 ,  C11D17/04 ,  A01N25/12 ,  C11D3/37 ,  C08J5/18 ,  A01N25/02

CPC classification number: C08F216/06 ,  A01N25/02 ,  A01N25/12 ,  C08F8/12 ,  C08F2500/26 ,  C08F2800/10 ,  C08J5/18 ,  C08J2300/10 ,  C08J2329/04 ,  C11D3/3753 ,  C11D17/042 ,  C08F218/08 ,  C08F2220/585 ,  C08F220/60

Abstract: Modified polyvinyl alcohol contains a (meth)acrylamide monomer unit having an ionic group, wherein the modified polyvinyl alcohol has a degree of saponification of from 50 to 99.99 mol % and a viscosity-average degree of polymerization of from 200 to 5000 and satisfies formulae (1) to (3) below. The modified polyvinyl alcohol thus obtained is particularly excellent in dispersibility in water. 0.8≦(MwUV/MwRI)≦1.3   (1) 1≦(MwUV/MnUV)≦7   (2) 0.03≦A280≦0.5   (3)

Abstract translation: 改性聚乙烯醇含有具有离子性基团的（甲基）丙烯酰胺单体单元，其中，改性聚乙烯醇的皂化度为50〜99.99摩尔％，粘均聚合度为200〜5000，满足式 1）〜（3）。 由此得到的改性聚乙烯醇在水中的分散性特别优异。 0.8‰¤Mw UV / Mw RI‰1.3‰¤Mw UV / Mn UV‰¤1 0.03‰¤A 280‰¤0.5

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：US20160326285A1

公开(公告)日：2016-11-10

申请号：US15108174

申请日：2014-12-24

Applicant: KURARAY CO., LTD.

Inventor： Yoko MORI ,  Masaki KATO

IPC: C08F216/06 ,  C11D3/37 ,  A01N25/30 ,  C11D17/04 ,  C08F218/08 ,  C08J5/18

CPC classification number: C08F216/06 ,  A01N25/30 ,  C08F8/12 ,  C08F218/08 ,  C08F2800/10 ,  C08J5/18 ,  C08J2300/105 ,  C08J2329/04 ,  C11D3/3753 ,  C11D17/042 ,  C08F222/16 ,  C08F222/02 ,  C08F220/14

Abstract: Modified polyvinyl alcohol contains a monomer unit having a carboxyl group, wherein the modified polyvinyl alcohol has a degree of saponification of from 50 to 99.99 mol % and a viscosity-average degree of polymerization of from 200 to 5000 and satisfies formulae (1) to (3) below. The modified polyvinyl alcohol of the present invention thus obtained is particularly excellent in dispersibility in water. 0.8≦(MwUV/MwRI)≦1.2   (1) 2≦(MwUV/MnUV)≦8   (2) 0.01≦A280≦0.8   (3)

Abstract translation: 改性聚乙烯醇含有具有羧基的单体单元，其中，改性聚乙烯醇的皂化度为50〜99.99摩尔％，粘均聚合度为200〜5000，满足式（1）〜（ 3）以下。 由此得到的本发明的改性聚乙烯醇在水中的分散性特别优异。 0.8‰¤Mw UV / Mw RI‰¤1.2 2‰Mw UV / Mw UV‰¤8 0.01‰¤A 280‰¤0.8