US PATENT SUBCLASS 428 / 402.22
.~.~.~.~ Addition polymer from unsaturated monomers only

Current as of: June, 1999
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428 /   HD   STOCK MATERIAL OR MISCELLANEOUS ARTICLES

357  DF  COATED OR STRUCTUALLY DEFINED FLAKE, PARTICLE, CELL, STRAND, STRAND PORTION, ROD, FILAMENT, MACROSCOPIC FIBER OR MASS THEREOF {5}
402  DF  .~ Particulate matter (e.g., sphere, flake, etc.) {3}
402.2  DF  .~.~ Microcapsule with fluid core (includes liposome) {1}
402.21  DF  .~.~.~ Solid-walled microcapsule from synthetic polymer {1}
402.22.~.~.~.~ Addition polymer from unsaturated monomers only

DEFINITION

Classification: 428/402.22

Addition polymer from unsaturated monomers only:

(under subclass 402.21) Subject matter wherein the synthetic

polymer is derived only from ethylenically unsaturated reactants.

(1) Note. The term "ethylenically unsaturated" includes acethlenic-type compounds but excludes homocyclic aromatic compounds, i.e., benzene-type compounds. Compounds, such as pyridine, diazine, pyrrole would be ethyienically unsaturated.