| 摘要 |
The invention relates to an improved process for the production of coatings of condensation polymers on inorganic particles, in which the product consists mainly of polymer particles which contain one or a few pigment particles and where the thickness of the coating can be adjusted through the quantity of monomer added. The process comprises: a) forming a first stable suspension of a solid monomer in a first inert organic liquid containing a minor amount of a dispersing agent, b) forming a second stable suspension of finely divided inorganic particles in a second inert organic liquid containing a minor amount of a dispersing agent and being miscible with said first organic liquid, c) adding said first suspension to said second suspension while stirring and heating the second suspension to the polymerization temperature of said monomer. |
