Surface sizing composition and method
    1.
    发明授权
    Surface sizing composition and method 失效
    表面施胶组合物和方法

    公开(公告)号:US5484509A

    公开(公告)日:1996-01-16

    申请号:US285259

    申请日:1994-08-03

    CPC分类号: D21H17/17 D21H17/36

    摘要: A method for treating paper which comprises applying to the surface of the paper an aqueous medium containing a sizing composition consisting essentially of 75 to 99.9 wt % polyvinyl alcohol which is at least 95 mole % hydrolyzed and 0.1 to 25 wt % ketene dimer represented by the formula: ##STR1## wherein R and R.sup.1 are the same or different hydrocarbyl groups having 8-30 carbon atoms.

    摘要翻译: 一种用于处理纸的方法,其包括向纸的表面施加含有基本上由75至99.9重量%的至少95摩尔%水解的聚乙烯醇和0.1至25重量%的乙烯酮二聚物组成的施胶组合物的水性介质, 式:其中R和R 1是具有8-30个碳原子的相同或不同的烃基。

    Low foaming, high weaving efficiency polyvinyl alcohol size composition
    2.
    发明授权
    Low foaming, high weaving efficiency polyvinyl alcohol size composition 失效
    低发泡,高编织效率的聚乙烯醇大小组成

    公开(公告)号:US4797127A

    公开(公告)日:1989-01-10

    申请号:US171206

    申请日:1988-03-17

    摘要: An aqueous size composition for cotton-containing textile yarn comprising in an aqueous solution(a) 100 parts polyvinyl alcohol(b) 2-15 parts hydrophobic waxy material(c) 0.2-5 parts ethylene oxide-propylene oxide surfactant which has a surface tension between about 37 and 48 dynes/cm as a 0.1% aqueous solution at 25.degree. C., and a foaming number less than about 20 (ml foam/g solution).degree. F. as a 7% aqueous polyvinyl alcohol solution containing 11.4 parts hydrogenated tallow wax and 2 parts surfactant per 100 parts polyvinyl alcohol.

    摘要翻译: 一种含棉纺织纱线的水性组合物,其包含水溶液(a)100份聚乙烯醇(b)2-15份疏水性蜡质材料(c)0.2-5份环氧乙烷 - 环氧丙烷表面活性剂,其具有表面张力 在25℃下为约37至48达因/厘米,0.1%水溶液,发泡数小于约20(ml泡沫/克溶液)DEG,作为含有11.4份氢化的7%聚乙烯醇水溶液 牛脂蜡和每100份聚乙烯醇2份表面活性剂。

    Solid state process for modification of polyvinyl alcohol using
Michael-type addition
    3.
    发明授权
    Solid state process for modification of polyvinyl alcohol using Michael-type addition 失效
    使用迈克尔型添加剂改性聚乙烯醇的固态方法

    公开(公告)号:US5350801A

    公开(公告)日:1994-09-27

    申请号:US89067

    申请日:1993-07-07

    CPC分类号: C08F8/34

    摘要: A solid state process for modifying polyvinyl alcohol using a Michael-type addition wherein dry polyvinyl alcohol powder is sprayed with a solution of a monomer capable of Michael-type addition in an amount sufficient to swell the polyvinyl alcohol or maintain its swollen state, but not dissolve or form a slurry of the polyvinyl alcohol. The swollen polyvinyl alcohol is sprayed with a catalyst and the temperature is raised to initiate the reaction between the polyvinyl alcohol and the monomer.

    摘要翻译: 使用迈克尔型添加剂改性聚乙烯醇的固态方法,其中干燥聚乙烯醇粉末用能够迈克尔型加成的单体溶液以足以溶胀聚乙烯醇或保持其溶胀状态的量喷雾 溶解或形成聚乙烯醇的浆液。 用催化剂喷雾膨胀的聚乙烯醇,升高温度以引发聚乙烯醇与单体之间的反应。

    Extrudable polyvinyl alcohol compositions containing thermoplastic
polyethylene oxide
    4.
    发明授权
    Extrudable polyvinyl alcohol compositions containing thermoplastic polyethylene oxide 失效
    含有热塑性聚乙烯氧化物的可挤出的聚乙烯醇组合物

    公开(公告)号:US5206278A

    公开(公告)日:1993-04-27

    申请号:US779218

    申请日:1991-10-18

    IPC分类号: C08L29/04 C08L71/02

    摘要: An extrudable polyvinyl alcohol composition useful for packaging and molding applications is prepared by melt blending polyvinyl alcohol and thermoplastic polyethylene oxide to provide a product which has improved pH stability and salt solution solubility. Useful extruded articles prepared from such compositions include films and containers.A method for extruding the polyvinyl alcohol composition comprises:adding sufficient energy to the polyvinyl alcohol composition to both melt it and essentially eliminate the polyvinyl alcohol crystallinity in the melt, andsimultaneously removing energy from the melt at a rate sufficient to avoid decomposition of the polyvinyl alcohol.The thermoplastic polyethylene oxide may be added to the polyvinyl alcohol before the polyvinyl alcohol is melted and its crystallinity eliminated or blended with the thus thermally treated polyvinyl alcohol and then melt extruding the polyvinyl alcohol/polyethylene oxide blend.

    Extrudable polyvinyl alcohol compositions containing thermoplastic
polyurethane
    5.
    发明授权
    Extrudable polyvinyl alcohol compositions containing thermoplastic polyurethane 失效
    含有热塑性聚氨酯的可挤出聚乙烯醇组合物

    公开(公告)号:US5028648A

    公开(公告)日:1991-07-02

    申请号:US551350

    申请日:1990-07-12

    CPC分类号: C08L29/04 C08L75/04

    摘要: An extruable polyvinyl alcohol composition useful for packaging and molding applications is prepared by melt blending polyvinyl alcohol and thermoplastic polyurethane to provide a product which has low water absorptivity, improved impact resistance, and improved low temperature/low humidity tensile properties. Useful extruded articles prepared from such compositions include films and bottles.A method for extruding the polyvinyl alcohol composition comprises:adding sufficient energy to the polyvinyl alcohol composition to both melt it and essentially eliminate the polyvinyl alcohol crystallinity in the melt, andsimultaneously removing energy from the melt at a rate sufficient to avoid decomposition of the polyvinyl alcohol.The thermoplastic polyurethane may be added to the polyvinyl alcohol before the polyvinyl alcohol is melted and its crystallinity eliminated or blended with the thus treated polyvinyl alcohol and then melt extruding the polyvinyl alcohol/polyurethane blend.

    摘要翻译: 通过熔融共混聚乙烯醇和热塑性聚氨酯制备可用于包装和模塑应用的可挤出的聚乙烯醇组合物,以提供具有低吸水性,改善的耐冲击性和改善的低温/低湿拉伸性能的产品。 由这种组合物制备的有用的挤压制品包括薄膜和瓶子。 用于挤出聚乙烯醇组合物的方法包括:向聚乙烯醇组合物中加入足够的能量以使其熔融并基本上消除熔体中的聚乙烯醇结晶度,同时以足以避免聚乙烯醇分解的速率从熔体中除去能量 醇。 在聚乙烯醇熔融之前可以将热塑性聚氨酯加入到聚乙烯醇中,并且将其结晶性消除或与如此处理的聚乙烯醇混合,然后熔融挤出聚乙烯醇/聚氨酯共混物。

    Reactive melt extrusion grafting of thermoplastic polyvinyl
alcohol/polyolefin blends
    6.
    发明授权
    Reactive melt extrusion grafting of thermoplastic polyvinyl alcohol/polyolefin blends 失效
    热塑性聚乙烯醇/聚烯烃共混物的反应熔融挤出接枝

    公开(公告)号:US5369168A

    公开(公告)日:1994-11-29

    申请号:US923756

    申请日:1992-08-03

    摘要: A method for preparing a compatible blend of polyolefin and thermoplastic polyvinyl alcohol comprising:(a) melting polyolefin in the initial elements of a melt extruder,(b) adding and melt blending an unsaturated carboxylic acid or anhydride with the melted polyolefin downstream in the extruder,(c) adding peroxide to the melt blend and grafting the unsaturated carboxylic acid or anhydride onto the polyolefin, and(d) melt blending thermoplastic PVOH into the grafted polyolefin/unsaturated carboxylic acid or anhydride melt mixture.

    摘要翻译: 一种制备聚烯烃和热塑性聚乙烯醇的相容共混物的方法,包括:(a)在熔融挤出机的初始元素中熔化聚烯烃,(b)将不饱和羧酸或酸酐与挤出机中的熔融聚烯烃下游加入和熔融共混 ,(c)向熔融共混物中加入过氧化物并将不饱和羧酸或酸酐接枝到聚烯烃上,和(d)将热塑性PVOH熔融共混到接枝聚烯烃/不饱和羧酸或酐酐熔体混合物中。

    Extrudable polyvinyl alcohol compositions containing polyester-polyether
block copolymers
    7.
    发明授权
    Extrudable polyvinyl alcohol compositions containing polyester-polyether block copolymers 失效
    含聚酯 - 聚醚嵌段共聚物的可挤压聚乙烯醇组合物

    公开(公告)号:US5349000A

    公开(公告)日:1994-09-20

    申请号:US23031

    申请日:1993-02-25

    IPC分类号: C08L29/04 C08L67/02 C08K5/05

    CPC分类号: C08L29/04 C08L67/025

    摘要: In a melt extrudable polyvinyl alcohol composition consisting essentially of polyvinyl alcohol and plasticizer, which has been made melt extrudable by adding sufficient energy to the polyvinyl alcohol to both melt and substantially eliminate the crystallinity in the melt while simultaneously removing energy from the melt at a rate sufficient to avoid decomposition of the polyvinyl alcohol, the improvement which comprises 5 to 25 wt % poly(butylene terephthalate)-polytetrahydrofuran block copolymer for improved impact resistance.

    摘要翻译: 在基本上由聚乙烯醇和增塑剂组成的可熔融挤出的聚乙烯醇组合物中,其通过向聚乙烯醇中加入足够的能量使其熔融挤出,以熔融并基本上消除熔体中的结晶度,同时以一定速率从熔体中除去能量 足以避免聚乙烯醇分解,其改进包括5至25重量%的聚(对苯二甲酸丁二醇酯) - 聚四氢呋喃嵌段共聚物以改善耐冲击性。

    Method for making extrudable polyvinyl alcohol compositions
    8.
    发明授权
    Method for making extrudable polyvinyl alcohol compositions 失效
    制造可挤压聚乙烯醇组合物的方法

    公开(公告)号:US5051222A

    公开(公告)日:1991-09-24

    申请号:US402167

    申请日:1989-09-01

    IPC分类号: C08L29/04

    CPC分类号: C08L29/04

    摘要: A method for extruding polyvinyl alcohol which includesadding sufficient energy to the polyvinyl alcohol to both melt it and essentially eliminate the crystallinity in the melt, andsimultaneously removing energy from the melt at a rate sufficient to avoid decomposition of the polyvinyl alcohol andrapidly cooling the extruded melt reduces the heat history and improves the resulting color of the extrudable polyvinyl alcohol.

    摘要翻译: 一种用于挤出聚乙烯醇的方法,其包括向聚乙烯醇中加入足够的能量以使其熔融并基本上消除熔体中的结晶度,同时以足以避免聚乙烯醇分解的速率从熔体中除去能量并快速冷却 挤出的熔融物减少热历史并改善可挤出的聚乙烯醇的所得颜色。

    Process for manufacturing polyvinyl alcohol polymers containing
acetoacetic ester groups
    10.
    发明授权
    Process for manufacturing polyvinyl alcohol polymers containing acetoacetic ester groups 失效
    制备含有乙酰乙酸酯基团的聚乙烯醇聚合物的方法

    公开(公告)号:US5719231A

    公开(公告)日:1998-02-17

    申请号:US653374

    申请日:1996-05-21

    申请人: Amir Famili

    发明人: Amir Famili

    IPC分类号: C08F8/14 C08F8/00

    CPC分类号: C08F8/14 C08F2810/20

    摘要: This invention relates to an improved process for the production of polyvinyl alcohol containing keto-ester groups wherein a polymer containing polyvinyl alcohol units is contacted with a compound having keto-ester forming groups under conditions for forming keto-ester groups on the polymer. The improvement in the process comprises: contacting a solid polymer containing vinyl alcohol units with a liquid phase acetoacetate of the formula: ##STR1## where R is chosen independently from alkyl groups under conditions for converting the alcohol functionality to the keto ester form; and then, removing unreacted acetoacetate forming group and volatile byproduct alcohol from the solid polymer.

    摘要翻译: 本发明涉及生产含有酮酯基团的聚乙烯醇的改进方法,其中含聚乙烯醇单元的聚合物在聚合物上形成酮酯基的条件下与具有酮酯形成基团的化合物接触。 该方法的改进包括:使含有乙烯醇单元的固体聚合物与下式的液相乙酰乙酸酯接触:其中R独立地选自烷基,在将醇官能度转化为酮酯形式的条件下; 然后从固体聚合物中除去未反应的乙酰乙酸酯形成基团和挥发性副产物醇。