Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1997-01-15
1999-01-05
Cain, Edward J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
523210, 523212, 523216, 428403, 428404, 428405, 428407, C08K 900
Patent
active
058563792
ABSTRACT:
An aqueous dispersion of core/shell type composite particles having colloidal silica as the cores and having an organic polymer as the shells is disclosed, comprising an aqueous dispersion of particles obtained by carring out a reaction operation of coupling reacting (a) colloidal silica and (b) an organoalkoxysilane in an aqueous medium in the presence of a dispersion stabilizer and thereafter polymerizing the coupling reaction product and (c) a vinyl monomer having at least one ethylenically unsaturated group, and further a method for producing the aqueous dispersion is disclosed.
The aqueous dispersion has a good dispersion stability, by-produces less polymer sole particles, and a high coating degree of a polymer on the surfaces of the silica particles.
REFERENCES:
patent: 5218014 (1993-06-01), Matsumoto et al.
Hokazono Hirohisa
Shiratsuchi Kentaro
Cain Edward J.
Fuji Photo Film Co. , Ltd.
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