AQUEOUS EMULSION AND ADHESIVE USING SAME

    公开(公告)号:US20220177733A1

    公开(公告)日:2022-06-09

    申请号:US17601232

    申请日:2020-04-02

    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.

    MODIFIED POLYVINYL ALCOHOL AND WATER-SOLUBLE FILM

    公开(公告)号:US20170275394A1

    公开(公告)日:2017-09-28

    申请号:US15514288

    申请日:2015-09-18

    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)

    VINYL ALCOHOL COPOLYMER AND METHOD FOR PRODUCING SAME
    5.
    发明申请
    VINYL ALCOHOL COPOLYMER AND METHOD FOR PRODUCING SAME 有权
    乙烯醇共聚物及其生产方法

    公开(公告)号:US20160083490A1

    公开(公告)日:2016-03-24

    申请号:US14785173

    申请日:2014-04-17

    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。

    ETHYLENE-VINYL ALCOHOL COPOLYMER AND AQUEOUS SOLUTION USING SAME

    公开(公告)号:US20220153891A1

    公开(公告)日:2022-05-19

    申请号:US17603699

    申请日:2020-04-13

    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

    COATING AGENT, ADHESIVE, AND COATED PRODUCT

    公开(公告)号:US20210009842A1

    公开(公告)日:2021-01-14

    申请号:US17041807

    申请日:2019-03-25

    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.

    ETHYLENE-VINYL ALCOHOL COPOLYMER PARTICLES, METHOD FOR PRODUCING SAME AND USE OF SAME

    公开(公告)号:US20200299435A1

    公开(公告)日:2020-09-24

    申请号:US16756243

    申请日:2018-10-16

    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.

    AQUEOUS EMULSION AND ADHESIVE USING SAME
    9.
    发明申请

    公开(公告)号:US20200157390A1

    公开(公告)日:2020-05-21

    申请号:US16625355

    申请日:2018-06-21

    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.

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