Method of producing oil-in-water type emulsion containing...

Details Method of producing oil-in-water type emulsion containing... Method of producing oil-in-water type emulsion containing...

2008-04-01

2008-04-01

McClendon, Sanza L. (Department: 1796)

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

Synthetic resins

Processes of preparing a desired or intentional composition...

C523S336000, C523S201000, C523S403000, C523S404000, C524S901000

Reexamination Certificate

active

07351755

ABSTRACT:
In a method of producing an oil-in-water type emulsion containing an internally crosslinked fine resin particle, the fine resin particle is encapsulated in an emulsion particle having an average particle diameter of 0.02 to 0.3 μm. The method includes a step of undergoing phase transition from a water-in-oil type emulsion (Y) which includes a resin (A) having a cationic group or an anionic group, an acid or a base (B) neutralizing 20 to 150 mole percent of the cationic group or the anionic group in the resin (A), an internally crosslinked fine resin particle (C), having an average particle diameter of 0.01 to 0.2 μm, dispersed in an oil phase and an aqueous medium (D) to an oil-in-water type emulsion (Z) by adding the aqueous medium (D) further to the water-in-oil type emulsion (Y).

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