US PATENT SUBCLASS 528 / 25
.~.~ With organic silicon-free reactant

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


528 /   HD   SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE CLASS 520 SERIES

*  DD  SYNTHETIC RESINS (Class 520, Subclass 1) {23}
10  DF  .~ FROM SILICON REACTANT HAVING AT LEAST ONE SILICON-TO-HYDROGEN OR -CARBON BOND {12}
25.~.~ With organic silicon-free reactant {4}
26  DF  .~.~.~> Organic Si-free reactant is a carboxylic acid or derivative {1}
27  DF  .~.~.~> Organic Si-free reactant contains a heterocyclic ring
28  DF  .~.~.~> Organic Si-free reactant is a nitrogen-containing compound
29  DF  .~.~.~> Organic Si-free reactant is an alcohol or alcoholate

DEFINITION

Classification: 528/25

(under subclass 10) Subject matter wherein a polymer has been derived from at least one or containing material and at least one reactant which is an organic compound and which organic compound is devoid of any silicon atom.

(1) Note. This subclass, for example, would include the reaction between two or containing reactants and at least one organic silicon-free reactant.