Processes for preparing and using tanning agents and preservatives
    3.
    发明授权
    Processes for preparing and using tanning agents and preservatives 失效
    制备和使用鞣剂和防腐剂的方法

    公开(公告)号:US07282066B2

    公开(公告)日:2007-10-16

    申请号:US10543605

    申请日:2004-01-22

    IPC分类号: C14C3/00 C14C9/00

    摘要: A process for the preparation of aqueous formulations, and aqueous formulations so prepared, the process comprising heating at least one cyclic compound of the formula I in the presence of water and of an acidic catalyst and, during or after the heating, H—X—R3 is at least partially separated off, where, in formula I, X is selected from oxygen, sulfur and N—R6, R1-R6 are as defined, and n is an integer from 1 to 4.

    摘要翻译: 一种制备水性制剂的方法和如此制备的水性制剂,该方法包括在水和酸性催化剂的存在下和在加热期间或之后加热至少一种式I的环状化合物,HXR < 3至少部分地分离出来,其中在式I中,X选自氧,硫和NR 6,R 1,R 2, 6定义,n为1〜4的整数。

    Condensates of polyalkylenepolyamines, their preparation and their use
in papermaking
    10.
    发明授权
    Condensates of polyalkylenepolyamines, their preparation and their use in papermaking 失效
    聚亚烷基多胺的缩合物,它们的制备及其在造纸中的应用

    公开(公告)号:US5536370A

    公开(公告)日:1996-07-16

    申请号:US424520

    申请日:1995-05-26

    摘要: Condensates of polyalkylenepolyamines which are obtainable by(a) partial amidation of polyalkylenepolyamines and(b) condensation of the partially amidated polyalkylenepolyamines with bifunctional or polyfunctional crosslinking agentsto give crosslinked polyalkylenepolyamines which, in 20% strength aqueous solution at 20.degree. C., have a viscosity of at least 100 mPa.s, processes for the preparation of the condensates of polyalkylenepolyamines by partial amidation of polyalkylenepolyamines with carboxylic acids, carboxylic esters, carboxylic anhydrides or carbonyl halides and crosslinking of the partially amidated polyalkylenepolyamines with bifunctional or polyfunctional crosslinking agents, from 0.001 to 10 parts by weight of a crosslinking agent being used per part by weight of the partially amidated polyalkylenepolyamines, and the use of the resulting condensates as drainage aids, flocculants, retention aids and fixing agents in papermaking.

    摘要翻译: PCT No.PCT / EP93 / 03205 Sec。 371日期:1995年5月26日 102(e)日期1995年5月26日PCT提交1993年11月16日PCT公布。 公开号WO94 / 12560 PCT 日本1994年6月9日。聚亚烷基多胺的缩聚物可通过(a)聚亚烷基多胺的部分酰胺化得到并且(b)部分酰胺化的聚亚烷基多胺与双功能或多官能交联剂的缩合得到交联的聚亚烷基多胺,其在20%强度水溶液中 20℃,具有至少100mPa.s的粘度,通过聚羧酸,羧酸酯,羧酸酐或羰基卤的部分酰胺化制备聚亚烷基多胺的缩合物的方法,部分酰化的聚亚烷基多胺的交联与 双官能或多官能交联剂,每重量份部分酰胺化的聚亚烷基多胺使用0.001至10重量份的交联剂,以及所得缩合物作为造纸中的助滤剂,絮凝剂,助留剂和固定剂的用途。