Polymer particles and method for producing the same

Details Polymer particles and method for producing the same Polymer particles and method for producing the same

1993-09-10

1995-01-17

Short, Patricia A.

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

Synthetic resins

Ethylenically unsaturated reactant admixed with either...

525 44, 525411, 525412, 525415, 525437, 525445, 525446, 523501, 523502, 430109, C08L 6702, C08L 6704, C08L 6706

Patent

active

053826248

ABSTRACT:
Spherical resin particles having a sharp particle size distribution and a method for producing such particles are disclosed. Resin particles according to this invention contain at least a polyester polymer and a polymer formed from a polymerizable monomer, and have an average diameter (D) of 1 to 500 .mu.m. At least 70% by weight of the particles have a diameter in the range of 0.5 D to 2.0 D. Such resin particles can be produced by swelling polyester-containing seed particles with a polymerizable monomer and then polymerizing the polymerizable monomer in swelled seed particles.

REFERENCES:
patent: 4191672 (1980-03-01), Salome
patent: 4413073 (1983-11-01), Gibson
M. Okubo et al., "Preparation of Micron-Size Monodisperse Polymer Microspheres Having Crosslinked Structures and Vinyl Groups," Colloid Polym. Sci. 269:217-221 (1991).

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