C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
C08F 220/20 (2006.01) B01J 20/26 (2006.01) C08F 2/18 (2006.01) C08F 2/20 (2006.01) C08F 2/32 (2006.01) C08F 220/10 (2006.01) C08F 220/40 (2006.01) C08F 222/10 (2006.01)
Patent
CA 2214920
The present invention is directed to a porous copolymer micro-particle having a high oil absorbency. The method of the present invention comprises the steps of: dissolving at least two polyunsaturated monomers in a water-immiscible organic solvent to provide a monomer mixture containing at least about 60%, preferably about 100% by weight polyunsaturated monomers; adding the monomer mixture to an aqueous solution, preferably having an effective amount of a suspension stabilizer dissolved therein, to form an organic/aqueous biphasic liquid system; vigorously agitating the biphasic liquid system at a rate sufficient to cause the water immiscible organic phase to be suspended as micro-droplets in the aqueous phase; continuing vigorous agitating during polymerization of the monomers in the suspended micro-droplets to produce a microporous polymer micro-particle; and separating the microporous polymer micro-particle from the organic solvent to produce a microporous and oil sorbent polymer micro-particle having a mean unit diameter of less than about 25 microns.
Amcol International Corporation
Fetherstonhaugh & Co.
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