Process for preparing microencapsulated particles and the result

Details Process for preparing microencapsulated particles and the result Process for preparing microencapsulated particles and the result

1988-10-14

1990-06-19

Schofer, Joseph L.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524801, 523202, 523336, 42721334, 264 47, C08F 614

Patent

active

049354566

ABSTRACT:
A method comprising forming a water-in-oil emulsion of an aqueous phase comprising discrete water-insoluble particles an an aqueous solution of a water-soluble polymerizable monomer, polymerizing said monomer, phase-inverting the water-in-oil emulsion to an oil-in-water emulsion, removing the oil phase from the phase-inverted emulsion to form an aqueous latex, adding to the latex an ethylenically unsaturated polymerizable second monomer, and polymerizing said second monomer to produce hydrophobic resin-encapsulated water-insoluble particles; and the resulting encapsulated particles.

REFERENCES:
patent: 3884871 (1975-05-01), Herman et al.
patent: 4446261 (1984-05-01), Yamasaki et al.

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