Polymer encapsulated dispersed solids and methods

Details Polymer encapsulated dispersed solids and methods Polymer encapsulated dispersed solids and methods

C - Chemistry, Metallurgy

08

F

400/5019, 400/90

C08F 292/00 (2006.01) B01J 13/18 (2006.01) C09C 3/10 (2006.01)

Patent

CA 1255031

POLYMER-ENCAPSULATED DISPERSED SOLIDS AND METHODS ABSTRACT OF THE DISCLOSURE A process for preparing polymer-encapsulated dispersed non monomer solids, such as, polymer-encapsulated pigments. Water, a pigment, a nonionic protective colloid or stabilizing agent, and a portion of a nonionic monomer having at least one monovalent unsaturated organo moiety are admixed. The pigment has a minimum of surface charge. A nonionic polymerization initiator is added to the admixture and the admixture is heated to begin the polymerization of the nonionic monomer. A nonionic catalyst and the remainder of the nonionic monomer are added to the admixture. The polymerization is allowed to proceed to finality or the desired degree. A polymer-encapsulated pigment dispersion is obtained. S P E C I F I C A T I O N

435477

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