US PATENT SUBCLASS 252 / 182.21
.~.~.~.~ Two or more reactants containing isocyanate or blocked isocyanate groups

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

Internet Version by PATENTEC © 1999      Terms of Use


252 /   HD   COMPOSITIONS

182.11  DF  COMPOSITIONS CONTAINING A SINGLE CHEMICAL REACTANT OR PLURAL NONINTERACTIVE CHEMICAL REACTANTS; I.E., NOT VIS-A-VIS {2}
182.12  DF  .~ Organic reactant {4}
182.13  DF  .~.~ For subsequent solid polymer treatment or preparation; e.g., crosslinking, grafting, curing, hardening, vulcanizing, etc. {4}
182.2  DF  .~.~.~ Reactant contains isocyante (-N=C=O) or blocked isocyanate group {1}
182.21.~.~.~.~ Two or more reactants containing isocyanate or blocked isocyanate groups {1}
182.22  DF  .~.~.~.~.~> Urethane (-N-C(=O)-O-C-) group

DEFINITION

Classification: 252/182.21

Two or more reactants containing isocyanate or blocked isocyanate groups:

(under subclass 182.2) Subject matter wherein the composition contains two or more reactants which contain isocyanate or blocked isocyanate groups; e.g., an isomeric mixture of 2, 2'-, 2, 4'- and/or 4, 4'- diisocyanate diphenylmethane, etc.