公开(公告)号：WO2009024471A1

公开(公告)日：2009-02-26

申请号：PCT/EP2008/060366

申请日：2008-08-07

Applicant: CIBA HOLDING INC. ,  GAO, Yu ,  YU, Min ,  BUJARD, Patrice

Inventor： GAO, Yu ,  YU, Min ,  BUJARD, Patrice

IPC: C09C1/00

CPC classification number: C09C1/0015 ,  C09C1/0021 ,  C09C1/0024 ,  C09C1/0048 ,  C09C1/62 ,  C09C1/644 ,  C09C2200/1004 ,  C09C2200/102 ,  C09C2200/1037 ,  C09C2200/1054 ,  C09C2200/1087

Abstract: The invention relates to a process for preparing platelet-like pigments comprising a core and at least one coating layer consisting essentially of a compound having from 60 to 95% by weight of carbon and from 5 to 25% by weight of nitrogen, the balance to 100% being selected from elements of the group consisting of hydrogen, oxygen and sulfur, comprising the steps of: (a) suspending plateletlike particles in a liquid; (b) adding one or more polymers containing nitrogen and carbon atoms, or (a1 ) suspending one or more polymers containing nitrogen and carbon atoms in a liquid; (b1 ) adding the plateletlike particles, (c) effecting a polymeric coating layer to be formed on the surface of said plateletlike particles from the polymers added at step (b), or (a1 ); (d) isolating said plateletlike particles having said polymeric coating layer from the suspension; and (e) heating said plateletlike particles having said polymeric coating layer to a temperature of from 100 °C to 1000 °C in a gaseous environment, to the pigments obtained by the method and the use thereof. It is possible by the process of the present invention to obtain very regular, homogeneous and continuous coatings in an extremely wide range of thicknesses.

Abstract translation: 本发明涉及一种制备血小板样颜料的方法，其包括核心和至少一个涂层，其基本上由具有60至95重量％的碳和5至25重量％的氮的化合物组成，其余为 100％选自氢，氧和硫的元素，包括以下步骤：（a）将片状颗粒悬浮在液体中; （b）添加一种或多种含有氮和碳原子的聚合物，或（a1）将一种或多种含有氮和碳原子的聚合物悬浮在液体中; （b1）加入片状颗粒，（c）从在步骤（b）或（a1）加入的聚合物中形成在所述片状颗粒的表面上形成的聚合物涂层; （d）从所述悬浮液中分离出具有所述聚合物涂层的所述片状颗粒; 和（e）在气体环境中将具有所述聚合物涂层的所述片状颗粒加热至100℃至1000℃的温度，以及通过该方法和使用获得的颜料。 通过本发明的方法可以在非常宽的厚度范围内获得非常规则，均匀和连续的涂层。