Method for reduction of aqueous phase polymer formation in suspension
polymerization
    25.
    发明授权
    Method for reduction of aqueous phase polymer formation in suspension polymerization 失效
    降低悬浮聚合中水相聚合物形成的方法

    公开(公告)号:US5414062A

    公开(公告)日:1995-05-09

    申请号:US209653

    申请日:1994-03-10

    申请人: Eric G. Lundquist

    发明人: Eric G. Lundquist

    IPC分类号: C08F2/00 C08F2/18

    CPC分类号: C08F2/18 C08F2/005

    摘要: A process for reducing the formation of aqueous phase polymer during the suspension polymerization of unsaturated monomer is disclosed. The reduction of polymer formation in the aqueous phase and subsequent fouling of polymerization reactor surfaces is achieved by incorporating an effective amount of a water-soluble peroxide compound into the aqueous phase used for the suspension polymerization. Hydrogen peroxide, sodium perborate and sodium percarbonate are effective aqueous phase inhibitors for use in the preparation of crosslinked polystyrene beads.

    摘要翻译: 公开了在不饱和单体的悬浮聚合期间减少水相聚合物形成的方法。 在水相中聚合物形成的减少和聚合反应器表面的随后结垢通过将有效量的水溶性过氧化物掺入到用于悬浮聚合的水相中来实现。 过氧化氢,过硼酸钠和过碳酸钠是用于制备交联聚苯乙烯珠的有效的水相抑制剂。

    Acidic catalyst for condensation reactions
    26.
    发明授权
    Acidic catalyst for condensation reactions 失效
    用于缩合反应的酸性催化剂

    公开(公告)号:US5233096A

    公开(公告)日:1993-08-03

    申请号:US912441

    申请日:1992-07-13

    申请人: Eric G. Lundquist

    发明人: Eric G. Lundquist

    IPC分类号: B01J31/10 C07C37/20 C08F8/36

    摘要: Strongly acidic cation-exchange resin beads made by functionalizing jetted, suspension-polymerized, crosslinked, styrenic copolymer beads with sulfonic acid groups produce an unexpectedly high level of conversion when catalyzing condensation reactions, particularly the condensation of phenol with aldehydes or ketones to form bisphenols.

    摘要翻译: 通过官能化具有磺酸基团的喷射,悬浮聚合,交联的苯乙烯共聚物珠粒制备的强酸性阳离子交换树脂珠,当催化缩合反应,特别是苯酚与醛或酮缩合形成双酚时,产生了出乎意料的高水平的转化率。

    Violin harp
    27.
    发明授权
    Violin harp 失效
    小提琴竖琴

    公开(公告)号:US4126074A

    公开(公告)日:1978-11-21

    申请号:US884859

    申请日:1978-03-09

    申请人: Eric G. Lundquist

    发明人: Eric G. Lundquist

    IPC分类号: G10D1/00 G10D3/12 G10D1/12

    CPC分类号: G10D1/00 G10D3/12

    摘要: A stringed musical instrument is disclosed which includes a body, a first bridge transversely mounted to the body adjacent one end thereof, and a second bridge mounted to the body in the vicinity of the opposite end. First and second string mounting means are positioned longitudinally outward of the first and second bridges, respectively, which tautly suspend a plurality of strings between said bridges. Lever means are provided for raising and lowering at least one of the strings at said first bridge to raise and lower the pitch of the strings.

    摘要翻译: 公开了一种弦乐器,其包括主体,相邻于其一端横向安装到主体的第一桥,以及在相对端附近安装到主体的第二桥。 第一和第二弦线安装装置分别纵向定位在第一和第二桥梁的外部,这些桥梁之间拉紧多个弦线。 提供杠杆装置用于升高和降低在所述第一桥上的弦中的至少一个,以升高和降低琴弦的音高。