US PATENT SUBCLASS 252 / 182.2
.~.~.~ Reactant contains isocyante (-N=C=O) or blocked isocyanate group

Current as of: June, 1999
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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.~.~.~ Reactant contains isocyante (-N=C=O) or blocked isocyanate group {1}
182.21  DF  .~.~.~.~> Two or more reactants containing isocyanate or blocked isocyanate groups {1}

DEFINITION

Classification: 252/182.2

Reactant contains isocyanate (-N=C=O) or blocked isocyanate group:

(under subclass 182.13) Subject matter wherein the organic reactant contains an isocyanate (-N=C=O) or blocked isocyanate (-NHC(=O)-OR) group.

(1) Note. A blocked isocyanate is an isocyanate which has been rendered inert by conversion to an inactive group usually in the form of a urethane (-N-C(=O)-OR) group.