US PATENT SUBCLASS 523 / 201
.~.~.~ Solid polymer particle enclosed in layer of diverse solid polymer, e.g., core-shell, etc.

Current as of: June, 1999
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523 /   HD   SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE CLASS 520 SERIES

*  DD  SYNTHETIC RESINS (Class 520, Subclass 1) {1}
1  DF  .~ PROCESSES OF PREPARING A DESIRED OR INTENTIONAL COMPOSITION OF AT LEAST ONE NONREACTANT MATERIAL AND AT LEAST ONE SOLID POLYMER OR SPECIFIED INTERMEDIATE CONDENSATION PRODUCT, OR PRODUCT THEREOF {71}
200  DF  .~.~ Process of forming a composition of a solid polymer or solid polymer forming system by admixing a product in the form of a surface coated, impregnated, encapsulated, or surface modified fiber, sheet, particle, or web, with a material; or composition which is the result of said admixing {8}
201.~.~.~ Solid polymer particle enclosed in layer of diverse solid polymer, e.g., core-shell, etc.

DEFINITION

Classification: 523/201

Solid polymer particle enclosed in layer of diverse solid polymer, e.g., core-shell, etc.:

(under subclass 200) Subject matter wherein a product containing a layer of a solid polymer enveloping a diverse solid polymer is admixed with a material so as to form a composition therewith or the composition formed from such as admixing process.

(1) Note. The solid polymer which envelops the diverse solid polymer need not be in a contiguous relationship therewith, nor does the solid polymer need to be the outermost layer of a multilayer product.

(2) Note. The polymer need not completely surround the substrate polymer, but must substantially surround the polymer.

(3) Note. A core-shell polymer is considered as a layer of a polymer enclosing a diverse polymer.

SEE OR SEARCH THIS CLASS, SUBCLASS:

206, for a product involving two or more solid polymers but wherein the relationship of the polymers is not of one enveloping the other.