Process for preparing water-absorbent resin
    3.
    发明授权
    Process for preparing water-absorbent resin 有权
    制备吸水树脂的方法

    公开(公告)号:US06573330B1

    公开(公告)日:2003-06-03

    申请号:US09208422

    申请日:1998-12-10

    IPC分类号: C08F26502

    摘要: A process for preparing a water-absorbent resin is provided which enables the water-absorbent resin to ensure the reduction in the release amount of liquid and the increase in the liquid diffusibility. In the preparation process, the water-absorbent resin is prepared by polymerization of a water-soluble ethylenic unsaturated monomer. The polymerization of the water-soluble ethylenic unsaturated monomer is allowed to take place in the presence of a water-absorbent resin having a water-absorbing rate different from that of a water-absorbent resin resulting from polymerization of the water-soluble ethylenic unsaturated monomer. In a preferred mode, the polymerization is performed by a reversed-phase suspension polymerization method.

    摘要翻译: 提供了一种制备吸水性树脂的方法,其使得吸水性树脂能够确保液体的释放量的降低和液体扩散性的增加。 在制备方法中,吸水性树脂通过水溶性烯键式不饱和单体的聚合制备。 使水溶性烯属不饱和单体的聚合在吸水性树脂的存在下进行,该吸水性树脂的吸水速度与由水溶性烯属不饱和单体聚合引起的吸水性树脂的吸水速度不同 。 在优选的方式中,通过反相悬浮聚合法进行聚合。

    Radio frequency power amplification module
    6.
    发明授权
    Radio frequency power amplification module 失效
    射频功率放大模块

    公开(公告)号:US5838543A

    公开(公告)日:1998-11-17

    申请号:US812484

    申请日:1997-03-06

    IPC分类号: H01L23/367 H05K7/20 H05K9/00

    摘要: A radio frequency power amplification module includes: a radiation section; a printed circuit board attached to the radiation section; a semiconductor device for power amplification, mounted on the printed circuit board; and a cap. The radiation section includes a plurality of radiation boards, the plurality of radiation boards at least including a first radiation board as a lowermost layer, and a second radiation board attached onto the first radiation board, the first radiation board being coupled to the cap.

    摘要翻译: 射频功率放大模块包括:辐射部分; 连接到辐射部分的印刷电路板; 用于功率放大的半导体器件,安装在印刷电路板上; 和帽子。 所述辐射部分包括多个辐射板,所述多个辐射板至少包括作为最下层的第一辐射板,以及连接到所述第一辐射板上的第二辐射板,所述第一辐射板耦合到所述盖。

    Method for production of alkylene oxide polymers
    7.
    发明授权
    Method for production of alkylene oxide polymers 失效
    烯化氧聚合物的生产方法

    公开(公告)号:US5326852A

    公开(公告)日:1994-07-05

    申请号:US907039

    申请日:1992-07-01

    IPC分类号: C08G65/02 C08G65/12

    摘要: The present invention is directed to a method for production of alkylene oxide polymers comprising reacting an alkylene oxide in an inert hydrocarbon solvent in the presence of a catalyst. The method of the present invention offers alkylene oxide polymers with a great commercial value and a high degree of polymerization which can be produced industrially advantageously with high reproducibility by the use of a catalyst obtained by a simple procedure of applying heat treatment to the product obtained by reacting an organic zinc compound with particular aliphatic polyhydric alcohol and monohydric alcohol.

    摘要翻译: 本发明涉及一种生产烯化氧聚合物的方法,其包括在惰性烃溶剂中在催化剂存在下使烯化氧反应。 本发明的方法提供了具有很大商业价值和高聚合度的环氧烷聚合物,其可以通过使用通过简单的方法对通过以下方法得到的产物进行热处理而获得的催化剂在工业上有利地以高重现性有效地制备: 使有机锌化合物与特定的脂族多元醇和一元醇反应。

    Process for producing a water-absorbent resin
    8.
    发明授权
    Process for producing a water-absorbent resin 失效
    吸水性树脂的制造方法

    公开(公告)号:US4880888A

    公开(公告)日:1989-11-14

    申请号:US238

    申请日:1987-01-05

    CPC分类号: C08F20/04 F02B1/04

    摘要: A water-absorbent resin having excellent physical properties can be produced by a process wherein an aqueous solution containing an .alpha.,.beta.-unsaturated carboxylic acid and an alkali metal salt thereof in a total amount of 25% by weight or more is subjected to polymerization with a radical polymerization initiator in a petroleum-based hydrocarbon solvent in the presence or absence of a crosslinking agent, characterized by using, as a surfactant, a polyglycerine--fatty acid ester having an HLB of 2 to 16 and represented by the general formula ##STR1## (wherein R is an acyl group or hydrogen atom and n is an integer of 0 to 8).

    摘要翻译: 具有优异物理性质的吸水性树脂可以通过以下方法制备,其中将含有总量为25重量%以上的α,β-不饱和羧酸及其碱金属盐的水溶液与 在存在或不存在交联剂的情况下,在石油基烃溶剂中的自由基聚合引发剂,其特征在于使用HLB为2〜16的聚甘油 - 脂肪酸酯作为表面活性剂,由通式(其中R是酰基或氢原子,n是0至8的整数)。