Method for the Production of High-Grade Polyisobutene
    2.
    发明申请
    Method for the Production of High-Grade Polyisobutene 审中-公开
    高级聚异丁烯生产方法

    公开(公告)号:US20080214762A1

    公开(公告)日:2008-09-04

    申请号:US11994417

    申请日:2006-07-11

    Abstract: The present invention relates to a process for preparing polyisobutenes by polymerizing isobutene in the presence of a Lewis acid catalyst in liquid organic phase, terminating the reaction by admixing the organic phase with an aqueous terminator in a dynamic mixer which has a rotationally symmetric mixing chamber formed from one circumferential wall and two end walls, and a mixing rotor driven such that it rotates therein, the organic phase being introduced through a first inlet orifice provided in the circumferential wall and the aqueous terminator via a second inlet orifice provided in the circumferential wall, and removing a finely dispersed mixture of the organic phase and of the terminator through an outlet orifice provided in the circumferential wall and feeding it to a phase separation. The process serves to prepare high-reactivity polyisobutenes and/or polyisobutenes with narrow molecular weight distribution.

    Abstract translation: 本发明涉及通过在路易斯酸催化剂存在下在液态有机相中聚合异丁烯来制备聚异丁烯的方法,通过在具有旋转对称的混合室形成的动态混合器中混合有机相与水性终止剂来终止​​反应 从一个圆周壁和两个端壁以及被驱动使得其在其中旋转的混合转子,有机相通过设置在周壁中的第一入口孔和设置在周向壁中的第二入口孔引入, 并通过设置在周壁上的出口孔除去有机相和终止剂的微细分散的混合物并将其送入相分离。 该方法用于制备具有窄分子量分布的高反应性聚异丁烯和/或聚异丁烯。

    Process for producing filaments from melamine/formaldehyde condensation
products
    6.
    发明授权
    Process for producing filaments from melamine/formaldehyde condensation products 失效
    从三聚氰胺/甲醛缩合产物生产长丝的方法

    公开(公告)号:US5916999A

    公开(公告)日:1999-06-29

    申请号:US930172

    申请日:1997-10-09

    CPC classification number: C08G12/32

    Abstract: A process for producing continuous filament fibers from a hydroxy- or amino-alkyl-melamine modified melamine-formaldehyde condensation product comprises filtering the highly concentrated aqueous solution of the melamine-formaldehyde condensation product, forcing the filtrate through a spinneret, drying the extruded filaments in a drying shaft by means of hot air, and treating the dried filaments in a tempering oven at temperatures which rise gradually to a maximum temperature of from 160 to 250.degree. C. to cure the precondensate.

    Abstract translation: PCT No.PCT / EP96 / 01677 Sec。 371日期1997年10月9日第 102(e)日期1997年10月9日PCT 1996年4月22日提交PCT从羟基或氨基烷基 - 三聚氰胺改性的三聚氰胺 - 甲醛缩合产物生产连续长丝纤维的方法包括过滤高浓度的三聚氰胺 - 甲醛缩合产物,迫使滤液通过喷丝头,通过热空气干燥干燥轴中的挤出长丝,并在回火炉中处理干燥的长丝,温度逐渐升高至最高温度为160至250℃ 治愈预处理。

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