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    Preparation of polyvinyl alcohol
    2.
    发明授权
    Preparation of polyvinyl alcohol 失效

    公开(公告)号：US06576720B2

    公开(公告)日：2003-06-10

    申请号：US10071831

    申请日：2002-02-07

    申请人： Werner Bauer ,  Peter Ball ,  Peter Tschirner

    发明人： Werner Bauer ,  Peter Ball ,  Peter Tschirner

    IPC分类号： C08F206

    CPC分类号： C08F8/12 ,  C08F118/08

    摘要： A process for preparing polyvinyl alcohol by means of catalytic transesterification of an alcoholic polyvinyl ester solution and subsequent workup by means of isolation of the polyvinyl alcohol formed includes adding, prior to the transesterification of the polyvinyl ester solution, the acetic ester of the alcohol used as solvent, in an amount of from 5 to 70% by weight, based on the overall amount of alcoholic solvent and its acetic ester, and recycling the liquid phase obtained after isolation of the polyvinyl alcohol product to a further polyvinyl ester transesterification.

    Process for reducing the odor emission of aqueous vinylaromatic/1,3-diene copolymer dispersions
    5.
    发明授权
    Process for reducing the odor emission of aqueous vinylaromatic/1,3-diene copolymer dispersions 失效
    用于降低乙烯基芳族化合物/ 1,3-二烯共聚物分散体的气味排放的方法

    公开(公告)号：US06417297B1

    公开(公告)日：2002-07-09

    申请号：US09593618

    申请日：2000-06-13

    申请人： Theo Mayer ,  Peter Ball

    发明人： Theo Mayer ,  Peter Ball

    IPC分类号： C08F616

    CPC分类号： C08F6/006 ,  C08C1/04 ,  C08C4/00 ,  C08F6/003 ,  C08F212/04 ,  C09D125/10 ,  C09J125/10

    摘要： A process for reducing the odor emission of aqueous vinylaromatic/1,3-diene copolymer dispersions and of redispersion powders obtainable therefrom by drying, is by emulsion polymerization of a mixture containing at least one vinylaromatic and at least one 1,3-diene in the presence of one or more surfactant substances and optionally drying of the polymer dispersion obtained thereby. There are 0.01% to 15.0% by weight of one or more monomers of the branched or straight-chain alkyl esters having 1 to 8 C atoms in the alkyl radical of monounsaturated monocarboxylic or dicarboxylic acids and 0.01% to 15.0% by weight of one or more monomers based upon the vinyl esters of branched or straight-chain aliphatic carboxylic acids having 1 to 10 C atoms which are added in one step or in two successive steps toward the end of the polymerization, when the total content of free monomers in the aqueous copolymer dispersion is in the range from ≧0 to ≦20% by weight. It is also possible optionally to add the vinyl ester fraction as early as the beginning of or during the polymerization. The data in % by weight is based in each case on the polymer content of the dispersion.

    摘要翻译： 降低乙烯基芳族化合物/ 1,3-二烯烃共聚物分散体和通过干燥获得的再分散粉末的气味排放的方法是通过在含有至少一种乙烯基芳族化合物和至少一种1,3-二烯的混合物的乳液聚合 存在一种或多种表面活性剂物质，并任选地干燥由此获得的聚合物分散体。 在单不饱和一元羧酸或二羧酸的烷基中具有1至8个C原子的支链或直链烷基酯的一种或多种单体的0.01至15.0重量％和0.01重量％至15.0重量％ 基于具有1至10个C原子的支链或直链脂族羧酸的乙烯基酯的更多单体，其在一个步骤中或在聚合结束时的两个连续步骤中加入，当水性中的游离单体的总含量 共聚物分散体在> = 0至<= 20重量％的范围内。 也可以任选地在聚合开始或聚合期间加入乙烯基酯部分。 在每种情况下，以重量％计的数据基于分散体的聚合物含量。

    Novel adhesive dispersions
    7.
    发明授权
    Novel adhesive dispersions 失效
    新型粘合剂分散体

    公开(公告)号：US4997879A

    公开(公告)日：1991-03-05

    申请号：US180378

    申请日：1988-04-12

    申请人： Rudolf Weissgerber ,  Klaus Marquardt ,  Peter Ball ,  Manfred Selig ,  Fritz Stallbauer

    发明人： Rudolf Weissgerber ,  Klaus Marquardt ,  Peter Ball ,  Manfred Selig ,  Fritz Stallbauer

    IPC分类号： C08F210/00 ,  C08F210/02 ,  C08F218/00 ,  C08F218/02 ,  C08F218/04 ,  C09J131/00 ,  C09J131/04

    CPC分类号： C08F218/04 ,  C08F210/02

    摘要： Novel pressure-sensitive aqueous adhesive dispersions comprising 40 to 65% by weight, based on the dispersion weight, of a copolymer produced by radical emulsion polymerization of ethylene, vinyl esters of saturated carboxylic acids of 2 to 12 carbon atoms, ethylenically unsaturated carboxylic acids, ethylenically unsaturated hydroxyalkyl functional compounds, optionally present (meth)acrylic acid esters with alkyl of 4 to 12 carbon atoms and optionally present mono- or poly-ethylenically unsaturated compounds having a second order transition temperature of -20.degree. to -60.degree. C. and a K value of 50 to 180, characterized in that the copolymer was obtained by polymerization of(a) 10-45% by weight of ethylene(b) 0-25% by weight of acrylic ester(s)(c) 40-89% by weight of vinyl ester(s)(d) 0.5-4% by weight of ethylenically unsaturated carboxylic acids(e) 0.5-10% by weight of ethylenically unsaturated hydroxyalkyl-functional compounds(f) 0-0.3% (meth)acrylamide(g) 0-10% ethylenically unsaturated sulfates and sulfonates or polyethylenically unsaturated compounds, in the presence of 1 to 6% by weight, based on the comonomer mixture, of an emulsifier.

    摘要翻译： 新型压敏水性粘合剂分散体，其包含通过乙烯的自由基乳液聚合，2-12个碳原子的饱和羧酸的乙烯基酯，烯键式不饱和羧酸，基于分散体重量的40至65重量％ 烯键式不饱和羟烷基官能化合物，任选存在的具有4至12个碳原子的烷基的（甲基）丙烯酸酯和任选的具有-20°至-60℃的二级转变温度的单或多烯属不饱和化合物，以及 K值为50〜180，其特征在于，共聚物通过（a）10-45重量％的乙烯（b）0-25重量％的丙烯酸酯（c）40-89 乙烯基酯的重量％（d）0.5-4重量％的烯键式不饱和羧酸（e）0.5-10重量％的烯键式不饱和羟烷基官能化合物（f）0-0.3％（甲基）丙烯酰胺 （g）0-10％烯属 不饱和硫酸盐和磺酸盐或多烯属不饱和化合物，在1至6重量％的存在下，基于共聚单体混合物，乳化剂。

    Crosslinkable powder composition which is redispersible in water
    10.
    发明授权
    Crosslinkable powder composition which is redispersible in water 失效
    可再分散于水中的可交联粉末组合物

    公开(公告)号：US6063865A

    公开(公告)日：2000-05-16

    申请号：US126675

    申请日：1998-07-30

    申请人： Peter Ball ,  Herbert Eck

    发明人： Peter Ball ,  Herbert Eck

    IPC分类号： C08L101/12 ,  C04B40/00 ,  C08K5/16 ,  C09D201/00 ,  C09J201/00 ,  C08G63/48

    CPC分类号： C04B40/0042 ,  C08K5/16 ,  C04B2103/0057

    摘要： A crosslinkable powder composition is provided which is redispersible in water and comprisesa) from 30 to 95 parts by weight of one or more water-insoluble, film-forming polymers of free-radically polymerizable, ethylenically unsaturated monomers, where from 0.5 to 10% by weight of the monomers, based on the total weight of the polymer a), are ones having one or more substituents selected from the group consisting of aldehyde, keto, epoxide, isocyanate, carboxylic anhydride and aziridine groups,b) from 5 to 70 parts by weight of one or more water-soluble, film-forming polymers, where the parts by weight of a) and b) add up to 100 parts by weight, andc) one or more compounds containing at least two functional groups which are present in salt form and are selected from the group consisting of amines, hydrazides, hydroxylamine esters, aryl- and alkylhydrazines or -hydrazones.

    摘要翻译： 提供可再分散在水中的可交联的粉末组合物，其包含a）30至95重量份的一种或多种可自由基聚合的烯属不饱和单体的水不溶性成膜聚合物，其中0.5至10重量％ 基于聚合物a）的总重量，是具有一个或多个选自醛，酮，环氧化物，异氰酸酯，羧酸酐和氮丙啶基团的取代基的单体，b）5至70 重量份的一种或多种水溶性成膜聚合物，其中a）和b）的重量份加到100份重量份，和c）一种或多种含有至少两个官能团的化合物，它们是 以盐形式存在，并且选自胺，酰肼，羟胺酯，芳基和烷基肼或腙。