公开(公告)号：US20180243706A1

公开(公告)日：2018-08-30

申请号：US15758596

申请日：2016-09-14

Applicant: KURARAY CO., LTD.

Inventor： Takuma KANESHIMA ,  Yosuke KUMAKI

IPC: B01F17/00 ,  C08L29/04 ,  C08F16/06

CPC classification number: B01F17/0028 ,  C08F16/06 ,  C08F216/06 ,  C08F2500/02 ,  C08L29/04 ,  C08L91/00 ,  C08L2201/56 ,  C09K8/035 ,  C09K8/588 ,  C10G2300/308 ,  C10G2300/80 ,  C08F218/08 ,  C08F220/04

Abstract: Provided is a crude oil dispersion stabilizer containing a vinyl alcohol-based polymer, wherein a degree of saponification of the vinyl alcohol-based polymer is greater than 70 mol % and 82 mol % or less, and the total content of carboxyl groups and lactone rings is 0.02 to 1 mol % relative to all structural units of the vinyl alcohol-based polymer. According to this, there is provided a crude oil dispersion stabilizer capable of dispersing or emulsifying a highly viscous crude oil, thereby reducing the viscosity and allowing the resulting crude oil dispersion liquid or emulsion to be present stably for a long time.

公开(公告)号：US20160347883A1

公开(公告)日：2016-12-01

申请号：US15116748

申请日：2015-02-04

Applicant: KURARAY CO., LTD.

Inventor： Yosuke KUMAKI ,  Takeshi KUSUDOU ,  Shunsuke FUJIOKA

IPC: C08F114/06 ,  C08F116/06

CPC classification number: C08F114/06 ,  B01F17/0028 ,  C08F2/20 ,  C08F8/00 ,  C08F8/12 ,  C08F14/06 ,  C08F116/06 ,  C08F118/08 ,  C08F216/06 ,  C08F220/44 ,  C08F220/56 ,  C08F2810/30 ,  C08F218/08 ,  C08L27/06 ,  C08L29/04

Abstract: There is provided a dispersing agent for suspension polymerization of a vinyl compound comprising a polyvinyl alcohol with a saponification degree of 65 to 90 mol % which satisfies Formulas (1) to (3). It allows for reducing the amount of coarse particles during polymerization and can thus provide a vinyl polymer with a sharp particle size distribution and higher plasticizer absorbability. 0.4≦(MwUV/MwRI)≦0.95  (1) 3≦(MwUV/MnUV)≦12  (2) 0.1≦A220≦0.8  (3)

公开(公告)号：US20170268175A1

公开(公告)日：2017-09-21

申请号：US15504730

申请日：2015-08-19

Applicant: KURARAY CO., LTD. ,  Asahi Glass Company, Limited

Inventor： Masako KAWAGOE ,  Yosuke KUMAKI ,  Sho MASUDA ,  Junsuke KAWANA

IPC: D21H19/20 ,  D21H23/22 ,  D21H21/14 ,  B65D65/42 ,  D21H27/10

CPC classification number: D21H19/20 ,  B65D65/40 ,  B65D65/42 ,  D21H17/11 ,  D21H19/22 ,  D21H21/14 ,  D21H21/16 ,  D21H23/22 ,  D21H27/10

Abstract: Provided is a paper composite superior in grease resistance, water resistance, and water vapor permeability, with an improvement of the grease resistance upon imparting grease resistance by using a greaseproofing agent having 6 or less carbon atoms. The paper composite contains: a paper substrate having an air permeation resistance of 1,000 sec or less and bulk density of from 0.5 to 1.0 g/cm3; and a greaseproof layer on at least one side thereof, the greaseproof layer containing an ethylene-vinyl alcohol polymer (A) and a cationic fluorine-containing polymer (B) having two specific constitutional units. A content of the copolymer (B) in the greaseproof layer is from 5 to 50 parts by mass with respect to 100 parts by mass of the polymer (A), an amount of the greaseproof layer on dry mass basis is from 0.1 to 3.0 g/m2, and a water vapor permeability of the paper composite is 1,000 g/m2·24 h or greater.

公开(公告)号：US20160229936A1

公开(公告)日：2016-08-11

申请号：US15021872

申请日：2014-09-11

Applicant: KURARAY CO., LTD.

Inventor： Yosuke KUMAKI ,  Yasutomo SAITO

IPC: C08F216/06 ,  C09K8/035 ,  C09K8/44 ,  C04B24/26

CPC classification number: C08F216/06 ,  C04B24/16 ,  C04B24/2623 ,  C04B28/02 ,  C04B2103/0055 ,  C04B2103/0062 ,  C04B2103/46 ,  C08F8/00 ,  C09K8/035 ,  C09K8/44 ,  C09K8/467 ,  C04B24/281

Abstract: Provided by the present invention is a vinyl alcohol polymer crosslinked by a structure represented by the following formula (1) and/or a disulfide structure, in which the vinyl alcohol polymer is not completely dissolved in a mixture prepared by: adding the vinyl alcohol polymer to water so as to give a concentration of 4% by mass; and stirring at 95° C. for 3 hrs. in the formula (1), R1, R2 and R3 each independently represent a hydrogen atom or a substituted or unsubstituted hydrocarbon group having 8 or less carbon atoms. Also provided include an additive for a drilling mud containing the vinyl alcohol polymer, a drilling mud containing the vinyl alcohol polymer as an additive, an additive for a drilling cement slurry containing the vinyl alcohol polymer, and a drilling cement slurry containing the vinyl alcohol polymer as an additive.

Abstract translation: 通过本发明提供的是通过下式（1）表示的结构和/或二硫键结构交联的乙烯醇聚合物，其中乙烯醇聚合物不完全溶解在通过以下步骤制备的混合物中：将乙烯醇聚合物 使水浓度达到4质量％; 并在95℃下搅拌3小时。 在式（1）中，R 1，R 2和R 3各自独立地表示氢原子或具有8个以下碳原子的取代或未取代的烃基。 还提供了包含含有乙烯醇聚合物的钻井泥浆的添加剂，含有乙烯醇聚合物作为添加剂的钻井泥浆，含有乙烯醇聚合物的钻井水泥浆料的添加剂和含有乙烯醇聚合物的钻井水泥浆料 作为添加剂。

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：US20190300693A1

公开(公告)日：2019-10-03

申请号：US16337224

申请日：2017-04-13

Applicant: KURARAY CO., LTD.

Inventor： Shinsuke NII ,  Yosuke KUMAKI ,  Junpei HORIGUCHI ,  Tadahito FUKUHARA ,  Tatsuya TANIDA

IPC: C08L29/04 ,  C08F216/06 ,  C08F222/10 ,  C08F8/12 ,  C08F8/16 ,  C08K5/00

Abstract: A modified vinyl alcohol polymer powder having a structural unit derived from a derivative of an ethylenically unsaturated dicarboxylic acid, and containing a reduced amount of methanol, and a trace amount of a component that does not dissolve in water. The present invention relates to a modified vinyl alcohol polymer powder containing 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, and having a degree of saponification of 80.0 mol % or more and 99.9 mol % or less, the modified vinyl alcohol polymer powder has a methanol content of 0.01 weight % or more and less than 3.0 weight %, the modified vinyl alcohol polymer powder contains 0.1 ppm or more and less than 2,000 ppm of a component that is insoluble in a 90° C., 5 weight % aqueous solution.

公开(公告)号：US20170029534A1

公开(公告)日：2017-02-02

申请号：US15302307

申请日：2015-04-08

Applicant: KURARAY CO., LTD. ,  KURARAY EUROPE GMBH

Inventor： Tadahito FUKUHARA ,  Yosuke KUMAKI ,  Samuel MICHEL ,  Dirk HARTMANN

IPC: C08F2/20 ,  C08F2/18 ,  C08F2/24

CPC classification number: C08F2/20 ,  C08F2/18 ,  C08F2/24 ,  C08F2/30 ,  C08F14/06 ,  C08F18/04 ,  C08F18/08 ,  C08F283/06 ,  C08L29/04 ,  C08L51/00 ,  C08L31/04 ,  C08L71/02 ,  C08L31/02 ,  C08L51/08 ,  C08L27/06

Abstract: Provided is a dispersion stabilizer for suspension polymerization comprising an aqueous emulsion containing a dispersant (A), a dispersoid (B), a graft polymer (C), and an aqueous medium, wherein the dispersant (A) contains a surfactant, the dispersoid (B) contains a polymer having an ethylenically unsaturated monomer unit, the graft polymer (C) is obtained by graft polymerization of the ethylenically unsaturated monomer with the dispersant (A), a mass ratio [A/(A+B+C)] is 0.001 or more and less than 0.18, a mass ratio [C/(A+B+C)] is 0 or more and less than 0.04, and the total content of the dispersant (A), the dispersoid (B), and the graft polymer (C) is 35 to 70 mass %. A vinyl polymer to be obtained by suspension polymerization of a vinyl compound using the dispersion stabilizer has good plasticizer absorption. Further, the number of fish-eyes that occur when the vinyl polymer is formed is small, and the hue deterioration is also suppressed. Further, the dispersion stabilizer also has excellent handleability.

Abstract translation: 提供一种悬浮聚合用分散稳定剂，其包含含有分散剂（A），分散质（B），接枝聚合物（C）和水性介质的水性乳液，其中分散剂（A）含有表面活性剂，分散质（ B）含有具有烯键式不饱和单体单元的聚合物，接枝聚合物（C）通过烯属不饱和单体与分散剂（A）的接枝聚合得到，质量比[A /（A + B + C）]为 0.001以上且小于0.18，质量比[C /（A + B + C）]为0以上且小于0.04，分散剂（A），分散质（B）和 接枝聚合物（C）为35〜70质量％。 通过使用分散稳定剂的乙烯基化合物的悬浮聚合获得的乙烯基聚合物具有良好的增塑剂吸收。 此外，形成乙烯基聚合物时发生的鱼眼数量小，并且还抑制了色调劣化。 此外，分散稳定剂也具有优异的可操作性。

公开(公告)号：US20160194416A1

公开(公告)日：2016-07-07

申请号：US14910582

申请日：2014-08-06

Applicant: KURARAY CO., LTD.

Inventor： Tadahito FUKUHARA ,  Yosuke KUMAKI

IPC: C08F116/06

CPC classification number: C08F116/06 ,  C08F2/20 ,  C08F2/30 ,  C08F8/12 ,  C08F216/06 ,  C08F218/08 ,  C08L2201/54 ,  C08F222/16 ,  C08F220/06 ,  C08F222/02 ,  C08F2220/585 ,  C08F2216/1441 ,  C08F220/34

Abstract: The present invention provides a highly water-soluble and easy-to-handle dispersion stabilizer for suspension polymerization that meets the following requirements: even if the amount of the dispersion stabilizer for suspension polymerization used for suspension polymerization of a vinyl compound is small, the resulting vinyl resin has high plasticizer absorptivity and is easy to work with; it is easy to remove residual monomer components from the resulting vinyl resin; and the resulting vinyl resin contains fewer coarse particles. The present invention relates to a dispersion stabilizer for suspension polymerization of a vinyl compound. This dispersion stabilizer contains a vinyl alcohol polymer (A) having a degree of saponification of 20 mol % or more and less than 65 mol %, a viscosity average degree of polymerization (P) of 100 or more and less than 600, an aliphatic hydrocarbon group having 6 to 18 carbon atoms at its terminal, and an anionic group in its side chain.

Abstract translation: 本发明提供了高度水溶性且易于处理的悬浮聚合用分散稳定剂，其满足以下要求：即使用于乙烯基化合物的悬浮聚合的悬浮聚合用分散稳定剂的量少， 乙烯基树脂具有高增塑剂吸收性，易于加工; 从所得乙烯基树脂中容易除去残留的单体组分; 所得到的乙烯基树脂含有较少的粗颗粒。 本发明涉及乙烯基化合物的悬浮聚合用分散稳定剂。 该分散稳定剂含有皂化度为20摩尔％以上且小于65摩尔％，粘均聚合度（P）为100以上且小于600的乙烯醇聚合物（A），脂肪族烃 在其末端具有6至18个碳原子的基团和其侧链中的阴离子基团。

公开(公告)号：US20160130763A1

公开(公告)日：2016-05-12

申请号：US14894797

申请日：2014-05-30

Applicant: KURARAY CO., LTD.

Inventor： Masako KAWAGOE ,  Yosuke KUMAKI

IPC: D21H19/12

CPC classification number: D21H19/12 ,  D21H19/00 ,  D21H19/20 ,  D21H19/22 ,  D21H19/38 ,  D21H19/40 ,  D21H19/60 ,  D21H19/76 ,  D21H21/16 ,  D21H27/10 ,  C08F216/06 ,  C08F210/02

Abstract: The present invention addresses the problem of providing a composite paper which exhibits excellent oil resistance, water vapor permeability, and water resistance even when hot and oily food is wrapped therein. The above problem can be solved by using a composite paper comprising an oil-resistant layer formed on at least one surface of a base paper, wherein the oil-resistant layer comprises a vinyl alcohol polymer (A) having a content of ethylene units of 2 to 10 mol %, a viscosity-average degree of polymerization of 300 to 2000, a saponification degree of 95 to 99.5 mol %, a total content of carboxyl groups and lactone rings of 0.02 to 3 mol %, a melting point of 180 to 230° C., a content of 1,2-glycol bonds of 1.2 to 2 mol %, and a molar fraction of central hydroxyl groups in chains of three consecutive hydroxyls by a triad expression relative to vinyl alcohol units of 65 to 98 mol %, the base paper has an air permeability resistance of 1000 seconds or less and a bulk density of 0.5 to 1.0 g/cm3, and the oil-resistant layer is formed in an amount of 0.1 to 10.0 g/m2 in terms of dry mass. The oil-resistant layer may also contain a fluorine compound (B), a layered inorganic compound (C) having an average aspect ratio of 20 to 1000, a fatty acid sizing agent (D), or a cross-linking agent (E).

Abstract translation: 本发明解决了提供一种复合纸的问题，该复合纸即使在热油和油性食品被包裹时也显示出优异的耐油性，水蒸气透过性和耐水性。 上述问题可以通过使用包含在原纸的至少一个表面上形成的耐油层的复合纸来解决，其中耐油层包含乙烯单元含量为2的乙烯醇聚合物（A） 至10摩尔％，粘均聚合度为300〜2000，皂化度为95〜99.5摩尔％，羧基和内酯环的总含量为0.02〜3摩尔％，熔点为180〜230 ℃，1,2-二醇键的含量为1.2〜2摩尔％，三个连续羟基的链中的中心羟基的摩尔分数相对于乙烯醇单元为65〜98摩尔％，通过三联体表示， 原纸的透气阻力为1000秒以下，堆密度为0.5〜1.0g / cm 3，耐油层的干燥质量为0.1〜10.0g / m 2。 耐油层还可以含有氟化合物（B），平均长径比为20〜1000的层状无机化合物（C），脂肪酸上浆剂（D）或交联剂（E） 。

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