US PATENT SUBCLASS 424 / 78.26
.~.~.~ Chemical treating agent contains element other than C, H, O, alkali, or alkaline earth metal

Current as of: June, 1999
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424 /   HD   DRUG, BIO-AFFECTING AND BODY TREATING COMPOSITIONS

78.08  DF  SOLID SYNTHETIC ORGANIC POLYMER AS DESIGNATED ORGANIC ACTIVE INGREDIENT (DOAI) {6}
78.17  DF  .~ Aftertreated polymer (e.g., grafting, blocking, etc.) {2}
78.18  DF  .~.~ Polymer derived from ethylenic monomers only {2}
78.26.~.~.~ Chemical treating agent contains element other than C, H, O, alkali, or alkaline earth metal {1}
78.27  DF  .~.~.~.~> Nitrogen or sulfur {2}

DEFINITION

Classification: 424/78.26

Chemical treating agent contains element other than C, H, O, alkali, or alkaline earth metal:

(under subclass 78.17) Subject matter wherein the solid synthetic organic polymer is chemically aftertreated with a material containing an element other than carbon, hydrogen, oxygen, alkali, or alkaline earth metal; e.g., aftertreating polyethylene with phosphorus oxychloride, etc.

(1) Note. The chemical treating agent containing an element other than carbon, hydrogen, oxygen, alkali or alkaline earth metal need not necessarily impart that element to the solid polymer but must react with it; e.g., neutralizing sodium polyacrylate with dilute hydrochloric acid, etc.

SEE OR SEARCH CLASS

525, Synthetic Resins or Natural Rubbers,

337+, for the chemical aftertreatment of solid polymers derived from ethylenic monomers only.