Process for preparation of microspheres and modification of rele

Details Process for preparation of microspheres and modification of rele Process for preparation of microspheres and modification of rele

1983-03-08

1984-10-30

Lovering, Richard D.

Plastic and nonmetallic article shaping or treating: processes

Encapsulating normally liquid material

Liquid encapsulation utilizing an emulsion or dispersion to...

264 43, 264 47, 42840224, 427 3, 424 32, B01J 1302

Patent

active

044799110

ABSTRACT:
This invention provides for the production of microspheres in an oil-in-water emulsion process using an emulsifier, whereby solvent removal from the oil phase allows for isolation of discrete microspheres, wherein the release rate of a core material is modified by the use of an alkaline agent, e.g. sodium hydroxide, during the preparation of the microspheres.

REFERENCES:
patent: 3872023 (1975-03-01), Baum et al.
patent: 3886084 (1975-05-01), Vassiliades
patent: 3943063 (1976-03-01), Morishita et al.
patent: 3960757 (1976-06-01), Morishita et al.
patent: 4166800 (1979-09-01), Fong
patent: 4384975 (1983-05-01), Fong

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