US PATENT SUBCLASS 424 / 78.21
.~.~.~.~.~ Ring-opened product thereof

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}
78.19  DF  .~.~.~ Heterocyclic monomer {2}
78.2  DF  .~.~.~.~ Maleic anhydride monomer copolymerized with hydrocarbon monomer {1}
78.21.~.~.~.~.~ Ring-opened product thereof

DEFINITION

Classification: 424/78.21

Ring-opened product thereof:

(under subclass 78.2) Subject matter wherein the polymerized copolymer of maleic anhydride is subjected to a ring opening with a reactant; e.g., alcohols, amines, mercaptans, water, etc.

SEE OR SEARCH CLASS

525, Synthetic Resins or Natural Rubbers,

54.1+, for the chemical aftertreatment of a solid synthetic organic polymer with a protein or biologically active polypeptide, subclasses 54.2+ aftertreatment with a carbohydrate or derivative, subclasses 327.4+ for a product derived from the aftertreatment of a polymer derived from a monomer containing a carboxylic acid anhydride, and other appropriate subclasses for a solid synthetic polymer which has been chemically aftertreated with a chemical or drug whose use is intended as a drug, bioaffecting or body treating composition.