公开(公告)号：US06429279B1

公开(公告)日：2002-08-06

申请号：US09554216

申请日：2000-05-11

申请人： Hans-Harald Hünger ,  Alfons Ludwig ,  Rainer Neuberg ,  Gunter Pipper ,  Thomas Sauer ,  Axel Wilms

发明人： Hans-Harald Hünger ,  Alfons Ludwig ,  Rainer Neuberg ,  Gunter Pipper ,  Thomas Sauer ,  Axel Wilms

IPC分类号： C08G6904

CPC分类号： C08G69/46 ,  C08G69/04 ,  C08G69/16

摘要： The disclosure is a process for preparing polyamides by concentrating the wash water extract from the extraction of polyamide to an extractables content of not more than 85% by weight, adding fresh lactam down to a water content of from 0.5 to 13% by weight, and effecting at least one adiabatic expansion during the polymerization.

摘要翻译： 本公开是通过将洗涤水提取物从聚酰胺的提取物浓缩至不超过85重量％的可提取物含量制备聚酰胺的方法，将新鲜内酰胺加入到0.5至13重量％的水含量中，以及 在聚合过程中至少产生一个绝热膨胀。

公开(公告)号：US07820757B2

公开(公告)日：2010-10-26

申请号：US10532597

申请日：2003-10-18

申请人： Christoph Plachetta ,  Manfred Heckmann ,  Hans-Harald Hünger ,  Robert Weiβ

发明人： Christoph Plachetta ,  Manfred Heckmann ,  Hans-Harald Hünger ,  Robert Weiβ

IPC分类号： C08G69/26 ,  C08G73/10 ,  C08K3/22 ,  C08K3/18 ,  B01F15/02 ,  B01F7/00

CPC分类号： B01F7/00758 ,  B01F3/1221 ,  B01F7/164 ,  C08K3/22 ,  C08K2003/2241 ,  C08L77/00

摘要： Disclosed is a method for producing a polyamide containing titanium dioxide pigments. Said method is characterized by the fact that titanium dioxide pigments are dispersed in an initial mixture containing water and caprolactam by means of a device comprising a dispersion chamber, a disk-shaped rotor that is disposed inside said dispersion chamber, a stator that is provided with radial openings, is arranged within the dispersion zone of the dispersion chamber, and is connected to the rotor, a substance inlet located on each side of the rotor, preferably with a respective axial duct section such that the two flows of substance are combined in the peripheral edge area of the rotor disk, and a product outlet which is placed on the outer edge of the dispersion zone of the dispersion chamber, by feeding the titanium dioxide pigments to the dispersion chamber through one of said substance inlets while feeding the initial mixture containing water and caprolactam to the dispersion chamber through the other of said substance inlets, whereby a product mixture containing water, caprolactam, and the used titanium dioxide pigment is obtained via the product outlet, and the product mixture is polymerized so as to obtain a polyamide containing titanium dioxide pigments. Also disclosed are polyamides obtained according to the inventive method and the use of such polyamides as a masterbatch.

摘要翻译： 公开了一种含有二氧化钛颜料的聚酰胺的制造方法。 所述方法的特征在于，二氧化钛颜料通过包含分散室，设置在所述分散室内部的盘形转子的装置，分散在含有水和己内酰胺的初始混合物中的装置， 径向开口布置在分散室的分散区域内，并且连接到转子，物质入口位于转子的每一侧，优选地具有相应的轴向管道部分，使得两个物质流合并在 转子盘的外围边缘区域以及置于分散室的分散区域的外边缘上的产品出口，通过一个所述物质入口将二氧化钛颜料供给分散室，同时将含有 水和己内酰胺通过所述物质入口中的另一个进入分散室，由此产生含有水，盖的产物混合物 通过产品出口得到二氧化钛颜料，聚合产物混合物，得到含二氧化钛颜料的聚酰胺。 还公开了根据本发明方法获得的聚酰胺和这种聚酰胺作为母料的用途。