Process for preparing a dispersion and for preparing polymer...

C - Chemistry – Metallurgy – 08 – J

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C08J 3/03 (2006.01) C01B 31/02 (2006.01) C08F 2/18 (2006.01) C08F 8/44 (2006.01) C08F 291/00 (2006.01) C08G 8/22 (2006.01) C08G 12/12 (2006.01) C08G 65/22 (2006.01)

Patent

CA 2113269

Process for producing a dispersion, wherein dispersed slightly crosslinked polyvinyl seed particles are swollen with an ion- izing liquid, said seed particles containing covalently linked ionizable groups causing a swelling of the seed particles by the ioniz- ing liquid to form a dispersion of droplets, wherein the resulting droplets after the swelling have a volume which is at least S times that of the seed particles. Said ionizing liquid may be or contain a polymerizable monomer or be charged with such a monomer. Polymerization of the monomers is effected in the droplets during or after the swelling, to form polymer particles.

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