US PATENT SUBCLASS 522 / 146
.~.~.~ Chemical reactant contains chalcogen

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

*  DD  SYNTHETIC RESINS (Class 520, Subclass 1) {1}
1  DF  .~ COMPOSITIONS TO BE POLYMERIZED BY WAVE ENERGY WHEREIN SAID COMPOSITION CONTAINS A RATE-AFFECTING MATERIAL; OR COMPOSITIONS TO BE MODIFIED BY WAVE ENERGY WHEREIN SAID COMPOSITION CONTAINS A RATE-AFFECTING MATERIAL; OR PROCESSES OF PREPARING OR TREATING A SOLID POLYMER UTILIZING WAVE ENERGY {27}
134  DF  .~.~ Processes of chemically modifying a solid polymer or SICP derived from at least one saturated monomer by treating solid polymer or SICP with a chemical reactant; or compositions therefor {3}
146.~.~.~ Chemical reactant contains chalcogen

DEFINITION

Classification: 522/146

Chemical reactant contains chalcogen:

(under subclass 134) Subject matter wherein the material that reacts with the solid polymer contains at least one chalcogen atom.

(1) Note. Chalcogen is limited to oxygen, sulfur, selenium and tellurium.

(2) Note. In the absence of information to the contrary oxygen in air is not considered to be a reactant.