Method for producing colored and exactly spherical fine-grains o

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...

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523212, 524431, 524432, 524434, 524435, 524436, C08K 906

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054201772

ABSTRACT:
A method for producing colored and exactly spherical fine-grains of polymer by carrying out the suspension and polymerization of ethylenic unsaturated monomers containing a pigment in water under the presence of a suspension stabilizer, wherein an inorganic pigment treated with silane-coupling agent is used as said pigment. According to the present invention, the pigments are homogeneously dispersed in said exactly spherical fine-grains of polymer and a loss of color is prevented.

REFERENCES:
patent: 3649321 (1972-03-01), Durrant et al.
patent: 3649588 (1972-03-01), Skigton
patent: 4077804 (1978-03-01), Vanzo
patent: 4148741 (1979-04-01), Bayley
patent: 4348309 (1982-09-01), Pruess
patent: 4447475 (1984-05-01), Lubbock et al.
patent: 5059639 (1991-10-01), Ohkura et al.

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