US PATENT SUBCLASS 264 / 4.7
.~.~ Solid-walled microcapsule formed by in situ polymerization

Current as of: June, 1999
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264 /   HD   PLASTIC AND NONMETALLIC ARTICLE SHAPING OR TREATING: PROCESSES

4  DF  ENCAPSULATING NORMALLY LIQUID MATERIAL {1}
4.1  DF  .~ Liquid encapsulation utilizing an emulsion or dispersion to form a solid-walled microcapsule (includes liposome) {4}
4.7.~.~ Solid-walled microcapsule formed by in situ polymerization

DEFINITION

Classification: 264/4.7

Solid-walled microcapsule formed by in situ polymerization:

(under subclass 4.1) Subject matter wherein the solid-walled microcapsule is obtained by the polymerization of one or more reactants contained in the colloidal emulsion or dispersion system.

(1) Note. A patent which claims an in situ-generated polymer which subsequently reacts with a material, e.g., a crosslinking agent contained in the liquid core, is not classified here but in subclass 4.3.