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452 条记录 (耗时 0.02 秒)

    Process for preparing a microcellular polyurethane foam with improved green strength
    21.
    发明授权
    Process for preparing a microcellular polyurethane foam with improved green strength 失效
    制备具有改善的生坯强度的微孔聚氨酯泡沫的方法

    公开(公告)号：US4388420A

    公开(公告)日：1983-06-14

    申请号：US325793

    申请日：1981-11-30

    申请人： Robert L. McBrayer

    发明人： Robert L. McBrayer

    IPC分类号： C08G18/18 ,  C08G18/66 ,  C08G18/14 ,  C08G18/24

    CPC分类号： C08G18/6688 ,  C08G18/18 ,  C08G2101/0066

    摘要： There is provided a process for preparing a microcellular foam with improved green strength properties comprising the step of reacting an organic polyisocyanate with polyalkylene ether polyol and from 1 to about 35 parts (by weight, per hundred parts of said polyol) of a chain extender in the presence of from about 0.1 to about 10.0 parts (by weight, per hundred parts of said polyol) of a compound selected from the group consisting of: ##STR1## wherein: (a) said polyol has an average functionality of from about 2 to about 8 and an average equivalent weight of from about 1000 to about 2700, and from about 0.8 to about 1.2 equivalents of said polyol are reacted per equivalent of isocyanate;(b) R is a divalent alkylene radical containing from about 1 to about 4 carbon atoms; and(c) R.sup.1, R.sup.2, R.sup.3, and R.sup.4 are independently selected from the group consisting of hydroxyalkyl containing from about 1 to about 4 carbon atoms and from about 1 to about 2 hydroxyl groups.

    摘要翻译： 提供了一种制备具有改善的生坯强度性能的微孔泡沫的方法，包括使有机多异氰酸酯与聚亚烷基醚多元醇和约1至约35份（重量百份所述多元醇）的扩链剂反应的步骤 其中：（a）所述多元醇的平均官能度为约2至约10至约10重量份，每100份所述多元醇的选自以下的化合物： 每当量的异氰酸酯反应约8，平均当量重量为约1000至约2700，约0.8至约1.2当量的所述多元醇; （b）R是含有约1至约4个碳原子的二价亚烷基; 和（c）R 1，R 2，R 3和R 4独立地选自含有约1至约4个碳原子的羟基烷基和约1至约2个羟基。

    Thickening aqueous systems with alpha-olefin oxide-modified liquid polyether thickeners
    24.
    发明授权
    Thickening aqueous systems with alpha-olefin oxide-modified liquid polyether thickeners 失效
    用α-烯烃氧化物改性的液体聚醚增稠剂增稠含水体系

    公开(公告)号：US4354956A

    公开(公告)日：1982-10-19

    申请号：US170498

    申请日：1980-07-21

    申请人： Ronald L. Camp

    发明人： Ronald L. Camp

    IPC分类号： B01J19/06 ,  C07C41/02 ,  C08G65/26 ,  B01J13/00 ,  C09K5/00

    CPC分类号： C10M3/00 ,  C08G65/2606 ,  C10M2201/02 ,  C10M2209/107 ,  C10N2240/08 ,  C10N2250/02

    摘要： New liquid thickeners for aqueous liquids are obtained by capping a liquid straight chain polyoxyalkylene compound derived from ethylene oxide or ethylene oxide and at least one other lower alkylene oxide by reacting said alkylene oxides with at least one active hydrogen-containing initiator having only one active hydrogen atom. The new thickeners are prepared at a molecular weight of about 1000 to about 25,000 utilizing an alpha-olefin oxide having a carbon chain of about 12 to about 18 aliphatic carbon atoms. Both block and heteric polyoxyalkylene compounds are useful. Alternatively, the new thickeners can be made by copolymerizing ethylene oxide or mixed lower alkylene oxides in the presence of said alpha-olefin oxide. The new thickeners exhibit an unexpected increase in viscosity in aqueous systems as compared with prior art liquid polyether thickening agents. The alpha-olefin oxide modified polyether thickening agents of the invention are useful in both water-based and water-glycol based hydraulic fluids.

    摘要翻译： 用于水性液体的新型液体增稠剂通过使所述环氧烷与至少一种仅具有一个活性氢的活性氢的引发剂反应来封端来自环氧乙烷或环氧乙烷的液体直链聚氧化烯化合物和至少一种其它低级环氧烷烃 原子。 使用具有约12至约18个脂族碳原子的碳链的α-烯烃氧化物，以约1000至约25,000的分子量制备新的增稠剂。 嵌段和杂多聚氧化烯化合物都是有用的。 或者，新的增稠剂可以通过在所述α-烯烃氧化物的存在下共聚环氧乙烷或混合的低级烯化氧来制备。 与现有技术的液体聚醚增稠剂相比，新型增稠剂在水性体系中的粘度出现意料之外的增加。 本发明的α-烯烃氧化物改性的聚醚增稠剂可用于水基和水 - 乙二醇型液压油。

    Novel aliphatic sulfosiloxane-silicate copolymers
    25.
    发明授权
    Novel aliphatic sulfosiloxane-silicate copolymers 失效
    新型脂族磺基硅氧烷 - 硅酸盐共聚物

    公开(公告)号：US4354002A

    公开(公告)日：1982-10-12

    申请号：US249916

    申请日：1981-04-01

    申请人： Pauls Davis ,  Joe C. Wilson

    发明人： Pauls Davis ,  Joe C. Wilson

    IPC分类号： C09K5/20 ,  C08L83/06

    CPC分类号： C09K5/20

    摘要： Sulfosiloxane-silicate copolymers are useful corrosion inhibitors in alcohol-based antifreeze compositions. The aliphatic sulfosiloxane-silicate copolymers contain repeating units derived from aliphatic sulfosiloxanes and water-soluble silicates.

    摘要翻译： 磺基硅氧烷 - 硅酸盐共聚物是醇基防冻剂组合物中有用的腐蚀抑制剂。 脂族磺基硅氧烷 - 硅酸盐共聚物含有衍生自脂族磺基硅氧烷和水溶性硅酸盐的重复单元。

    Process for the preparation of 1-aminoanthraquinones
    26.
    发明授权
    Process for the preparation of 1-aminoanthraquinones 失效
    1-氨基蒽醌的制备方法

    公开(公告)号：US4328161A

    公开(公告)日：1982-05-04

    申请号：US834993

    申请日：1977-09-20

    申请人： Rack H. Chung

    发明人： Rack H. Chung

    IPC分类号： C07D261/20 ,  C07C97/24 ,  C07C97/26 ,  C07C143/665

    CPC分类号： C07D261/20

    摘要： A selective process for the preparation of 1-aminoanthraquinones from the corresponding 1-aminoanthraquinone-2-carboxylic acid by decarboxylation in an acid solution in the presence of iron or zinc as a catalyst.

    摘要翻译： 在铁或锌作为催化剂存在下，通过在酸溶液中脱羧，由相应的1-氨基蒽醌-2-羧酸制备1-氨基蒽醌的选择性方法。