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17 条记录 (耗时 0.018 秒)

    Additive combination for improving the processing properties of water-containing mixtures of building materials
    2.
    发明授权
    Additive combination for improving the processing properties of water-containing mixtures of building materials 失效
    用于改善建筑材料含水混合物的加工性能的添加剂组合

    公开(公告)号：US5387626A

    公开(公告)日：1995-02-07

    申请号：US234730

    申请日：1994-04-28

    申请人： Jozef Bohme-Kovac ,  Friedrich Girg ,  Heinz-Josef Mann

    发明人： Jozef Bohme-Kovac ,  Friedrich Girg ,  Heinz-Josef Mann

    IPC分类号： C04B24/22 ,  C04B24/02 ,  C04B24/12 ,  C04B24/20 ,  C04B24/26 ,  C04B24/30 ,  C04B24/38 ,  C04B28/02 ,  E04F13/02 ,  C08L1/28 ,  C08L3/16

    CPC分类号： C04B40/0039 ,  C04B24/383 ,  C04B28/02 ,  C04B2201/10

    摘要： Additive combination for improving the processing properties of water-containing mixtures of building materials.The invention relates to an additive combination for water-containing mixtures of building materials, comprisinga) at least 65% by weight, preferably 65 to 98% by weight, of a water-soluble cellulose ether or a derivative thereof,b) from 1 to 15% by weight of polyacrylamide,c) from 1 to 20% by weight of an alkali metal salt or ammonium salt of a crosslinked, ungrafted or starch-grafted polyacrylate,d) from 0 to 20% by weight of a starch ether ande) from 0 to 15% by weight of a water-soluble alkali metal salt, alkaline earth metal salt or ammonium salt of an arylsulfonic acid-formaldehyde condensation product or of a sulfonic acid-modified product of the polycondensation of melamine and formaldehyde,and to building material mixtures which contain these additive combinations.The additive combinations according to the invention are suitable for all water-containing mixtures of building materials, in particular for plasters, mortars, adhesive cements and fillers.

    摘要翻译： 用于改善建筑材料含水混合物的加工性能的添加剂组合。 本发明涉及建筑材料的含水混合物的添加剂组合物，其包含a）至少65重量％，优选65至98重量％的水溶性纤维素醚或其衍生物，b）1 至15重量％的聚丙烯酰胺，c）1至20重量％的交联，未接枝或淀粉接枝的聚丙烯酸酯的碱金属盐或铵盐，d）0至20重量％的淀粉醚和 e）0至15重量％的芳基磺酸 - 甲醛缩合产物的水溶性碱金属盐，碱土金属盐或铵盐或三聚氰胺与甲醛缩聚的磺酸改性产物，和 包含这些添加剂组合的建筑材料混合物。 根据本发明的添加剂组合适用于建筑材料的所有含水混合物，特别是用于石膏，砂浆，粘合剂水泥和填料的所有含水混合物。

    High-amylose starch acetate
    4.
    发明授权
    High-amylose starch acetate 失效
    高分子淀粉

    公开(公告)号：US3553196A

    公开(公告)日：1971-01-05

    申请号：US3553196D

    申请日：1969-07-10

    申请人： US AGRICULTURE

    发明人： MARK ARTHUR M ,  MEHLTRETTER CHARLES L

    IPC分类号： C08B33/02 ,  C08L3/16 ,  C08B19/02

    CPC分类号： C08L3/16 ,  C08B33/02

    摘要： WATER-SOLUBLE FOOD PACKAGING FILMS ARE CAST FROM AQUEOUS DISPERSIONS PREPARED BY STEAM JET COOKING HIGHAMYLOSE CORN STARCH ACETATES OF D.S. 0.21 TO 0.31 AT 177*C. TO DISINTEGRATE THE GRANULES PRESENT. THE ACETATES WERE PRODUCED IN GRANULE FORM BY ACETYLATING HIGH-AMYLOSE CORN STARCH OF 70 PERCENT APPARENT AMYLOSE CONTENT WITH ACETIC ANHYDRIDE IN A MIXER AT 90* TO 95C. FOR 30 MINUTES USING 1.5 PERCENT SODIUM HYDROXIDE (BASED ON DRY STARCH) AS CATALYST.

    Concentrated dispersions of fluorinated polymers and process for their preparation
    7.
    发明授权
    Concentrated dispersions of fluorinated polymers and process for their preparation 失效
    氟化聚合物的浓缩分散体及其制备方法

    公开(公告)号：US4369266A

    公开(公告)日：1983-01-18

    申请号：US125463

    申请日：1980-02-28

    申请人： Jurgen Kuhls ,  Eduard Weiss

    发明人： Jurgen Kuhls ,  Eduard Weiss

    IPC分类号： C08J3/02 ,  C08C1/075 ,  C08F6/20 ,  C08L3/00 ,  C08L27/12 ,  C08L27/18 ,  C09D127/12 ,  C08L3/16

    CPC分类号： C08F6/20 ,  B01D61/58 ,  B01D2311/06 ,  B01D61/025 ,  B01D61/145

    摘要： Aqueous colloidal dispersions of fluorinated polymers can be concentrated, after adding a stabilizing emulsifier, to high solids contents by ultrafiltration over customary semi-permeable membranes if pumps which keep the dispersion free from contact with components which cause frictional forces are used for conveying the dispersion. A considerable proportion of the stabilizing emulsifier added and high proportions of the fluorine-containing emulsifier originally contained in the fluorinated polymer dispersion from the emulsion polymerization can be removed via the aqueous permeate. The fluorine-containing emulsifier can be recovered by a downwstream basic anion exchanger and the stabilizing emulsifier contained in the filtrate flowing out of the anion exchanger can be concentrated in this filtrate by reverse osmosis and optionally recycled into the ultrafiltration process. Fluorinated polymer dispersions which, in addition to having a high solids content, are distinguished by particularly low contents of fluorine-containing emulsifier and of stabilizing emulsifier can be obtained. The process can be applied to all known aqueous, colloidal dispersions of fluorinated homopolymers and copolymers.

    摘要翻译： 如果将保持分散体与导致摩擦力的部件接触的泵与使用摩擦力的部件接触的泵用于输送分散体，则氟化聚合物的水性胶体分散体可以在通过常规半透膜之后通过超滤将高稳定性乳化剂加入到高固体含量之后进行浓缩。 最初含有乳化聚合物的含氟聚合物分散体中含有相当比例的稳定化乳化剂和高比例的含氟乳化剂可通过含水渗透物除去。 含氟乳化剂可以通过下游碱性阴离子交换剂回收，并且流出阴离子交换剂的滤液中所含的稳定乳化剂可以通过反渗透浓缩在该滤液中，并任选地再循环到超滤过程中。 通过特别低含量的含氟乳化剂和稳定化乳化剂，可以获得含有高固含量的氟化聚合物分散体。 该方法可以应用于所有已知的氟化均聚物和共聚物的水性胶体分散体。