公开(公告)号：US3904544A

公开(公告)日：1975-09-09

申请号：US29270572

申请日：1972-09-27

Applicant: CIBA GEIGY AG

Inventor： CLARK DAVID RONALD ,  HYDE THOMAS GERALD

IPC: B01J13/00 ,  C09B67/42 ,  D06L3/12 ,  C09K1/02

CPC classification number: B01J13/0082 ,  C09B67/0071 ,  D06L4/664

Abstract: The present invention provides a process in which a slurry is prepared containing optical brighteners from the distilbene, pyrazoline, coumarine and triazolyl-stilbene series, by mixing the wet filter-cake obtained during the preparation of these compounds with such quantity dispersing agent and/or electrolyte that the resultant slurry is thixotropic and, therefore, has reduced tendency to settle out on static storage and has a Brookfield viscosity at equilibrium from 2,000 to 10,000 centipoise at 6 revolutions per minute, 1,000 to 3,500 centipoise at 12 revolutions per minute and up to 2,000 centipoise at 60 revolutions per minute.

Abstract translation: 本发明提供一种方法，其中制备含有来自二苯乙烯，吡唑啉，香豆素和三唑基 - 二苯乙烯系列的荧光增白剂的浆料，通过将在这些化合物的制备过程中获得的湿滤饼与这种数量的分散剂和/或 电解液使得所得到的浆液具有触变性，因此具有降低静态储存的倾向，并且在6转/分钟时具有2,000至10,000厘泊的平衡的Brookfield粘度，以每分钟12转为1,000至3,500厘泊，直到 每分钟60转2,000厘泊。