Process for preparation of monodisperse polymer particles having

Details Process for preparation of monodisperse polymer particles having Process for preparation of monodisperse polymer particles having

1989-01-25

1991-02-26

Bleutge, John C.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525309, 526 71, 528499, 524533, C08F 200

Patent

active

049962655

ABSTRACT:
In a dispersion system comprising seed polymer particles and a monomer, the solubility of the monomer is reduced by such means as addition of water, whereby the monomer is precipitated and absorbed in the seed polymer particles, and in this state, the monomer absorbed in the seed polymer particles is selectively polymerized.
Namely, according to the present invention, the decrease of the solubility of the monomer in the dispersion system is utilized for absorption of the monomer in the seed polymer particles, and polymer particles having an increased particle size can be prepared in a short time at a high efficiency.

REFERENCES:
Ugelstad et al., "Preparation and Application of Monodisperse Polymer Particles", Journal of Polymer Science, Polymer Symposium 72, 225-240 (1985).
Flory, Paul J., "Principles of Polymer Chemistry", Cornell University Press, Ithaca, N. Y., 1953, pp. 541, 542 and 577.

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