PROCESS FOR SYNTHESISING COATED ORGANIC OR INORGANIC PARTICLES
First Claim
1. Process for manufacturing particles coated with a coating material, said process comprising the following steps:
- (a) synthesising particles in a pressurized CO2 medium,(b) bringing the synthesised particles and the coating material or the precursors of said material into contact, in a pressurized CO2 medium,(c) coating the synthesised particles with the coating material, using the coating material directly, or after conversion of the precursors of the coating material into said coating material, and(d) recovering the coated particles,steps (a) and (b) being coupled such that the particles synthesised in step (a) remain dispersed in a pressurized CO2 medium at least until step (c).
3 Assignments
0 Petitions
Accused Products
Abstract
A process for the “in situ” manufacture, in a pressurized CO2 medium, of coated particles. The manufacturing process is characterized in that the steps of synthesising the particles and of coating these particles are coupled in such a way that the synthesised particles remain dispersed in a pressurized CO2 medium at least until the coating. The device comprises a reactor for synthesising particles in a pressurized CO2 medium; a means of injecting the coating material or precursor thereof into said reactor; a means of supplying said reactor with a pressurized CO2 medium; in which the means of injecting the coating material or precursor thereof is coupled to the synthesis reactor in such a way that the injection of the coating material or precursor thereof into said reactor does not destroy the dispersion of the particles, in a pressurized CO2 medium, in said reactor.
12 Citations
35 Claims
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1. Process for manufacturing particles coated with a coating material, said process comprising the following steps:
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(a) synthesising particles in a pressurized CO2 medium, (b) bringing the synthesised particles and the coating material or the precursors of said material into contact, in a pressurized CO2 medium, (c) coating the synthesised particles with the coating material, using the coating material directly, or after conversion of the precursors of the coating material into said coating material, and (d) recovering the coated particles, steps (a) and (b) being coupled such that the particles synthesised in step (a) remain dispersed in a pressurized CO2 medium at least until step (c). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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Specification