초록 ▼

The invention relates to a stable aqueous dispersion of particles which can be flocculated by increasing the temperature to a value above the transition temperature. The invention is characterized in that the dispersion comprises a polymer selected from the group consisting of polyvinyl methyl ether

The invention relates to a stable aqueous dispersion of particles which can be flocculated by increasing the temperature to a value above the transition temperature. The invention is characterized in that the dispersion comprises a polymer selected from the group consisting of polyvinyl methyl ether and a block copolymer of polyvinyl methyl ether and a polyvinyl ether, the ether group bonded to the main chain via the oxygen atom being adsorbed onto the surface of the particles. The invention also relates to a block polymer of the above-mentioned type and to a method of manufacturing such a block copolymer. The invention enables very fine powders of ceramic particles having a very high homogeneity to be obtained.

대표청구항 ▼

[ We claim:] [1.] A stable aqueous dispersion of particles, which dispersion can be flocculated by increasing its temperature to a value above a transition temperature, said dispersion, in addition to said particles, comprising a polymer selected from the group consisting of polyvinyl methyl ether a

[ We claim:] [1.] A stable aqueous dispersion of particles, which dispersion can be flocculated by increasing its temperature to a value above a transition temperature, said dispersion, in addition to said particles, comprising a polymer selected from the group consisting of polyvinyl methyl ether and a block copolymer of polyvinyl methyl ether and an other polyvinyl ether, said polymer being absorbed onto the surface of the particles via oxygens of the ether groups.