US 5,296,266 AGranted

Method of preparing microcapsule

AssigneeSeiko Epson Corporation

InventorsMasanao Kunugi, Hiroshi Itoh, Hajime Kurihara

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Abstract

A method for producing microcapsules in which various coats can be applied to various cores at any desired but uniformly controllable thickness comprises the steps of: (a) providing microcapsule cores, (b) depositing resin particles uniformly onto the surfaces of the microcapsule cores to form resin particle-deposited-onto-cores, (c) putting the resin particle-deposited-onto-cores in a monodisperse state, (d) bringing the resin particle-deposited-onto-cores in the monodisperse state into contact with a solvent in which the resin of the resin particles can dissolve, and (e) drying the resin particle-deposited-onto-cores which has been brought into contact with the solvent, while kept in the monodisperse state and, then, recovering the dried cores.

Claims12

Dependent claims

A method for producing microcapsules, comprising the steps of:

(a) providing microcapsule cores having surfaces,
(b) depositing resin particles uniformly onto the surfaces of said microcapsule cores to form resin particle-deposited-onto-cores,
(c) putting said resin particle-deposited-onto-cores in a monodisperse state wherein they do not physically contact each other,
(d) bringing said resin particle-deposited-onto-cores in the monodisperse state into contact with a solvent in which the resin of said resin particles can dissolve whereby to form a solvent-resin solution on the surfaces of the microcapsule cores, and
(e) drying said resin particle-deposited-onto-cores which have been brought into contact with the solvent, while kept in the monodisperse state, whereby to form finished microcapsules having cores with continuous resin coats and, then, recovering the finished microcapsules.

2 more elements

Dependencies are inferred from the claim text.