| 摘要 |
<p>PURPOSE:To provide the titled compsn. which is clear and has excellent resistance to heat, weather and solvents and tinting strength, by adding a silane coupling agent to a composite pigment composed of an org. pigment and an inorg. pigment to firmly bond pigment particles to one another. CONSTITUTION:3-20wt% silane coupling agent such as vinyltrichlorosilane and small quantities of water and an org. solvent are added to a composite pigment composed of 1-50pts.wt. org. pigment such as copper phthalocyanine pigment and 99-50pts.wt. inorg. pigment such as green pigment [TiO2:NiO:ZnO:CoO (1:0.7:0.7:0.8)]. Mixing is carried out at room temp. or with heating for 30- 60min. The mixture is filtered by means of suction, washed with water and dried, whereby pigment particles are firmly bonded to one another by the silane coupling agent.</p> |
