US PATENT SUBCLASS 526 / 219.3
.~.~.~.~.~ Contains specified ingredient other than the N=N or N-N group containing compound, or water, or defined hydrocarbon or defined halogenated hydrocarbon

Current as of: June, 1999
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526 /   HD   SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE CLASS 520 SERIES

*  DD  SYNTHETIC RESINS (Class 520, Subclass 1) {8}
72  DF  .~ POLYMERS FROM ONLY ETHYLENIC MONOMERS OR PROCESSES OF POLYMERIZING, POLYMERIZABLE COMPOSITIONS CONTAINING ONLY ETHYLENIC MONOMERS AS REACTANTS OR PROCESSES OF PREPARING {43}
89  DF  .~.~ Polymerizing in the presence of a specified material other than monomer {28}
217  DF  .~.~.~ Material contains organic nitrogen compound {2}
218.1  DF  .~.~.~.~ Organic compound contains N=N or N-N group {5}
219.3.~.~.~.~.~ Contains specified ingredient other than the N=N or N-N group containing compound, or water, or defined hydrocarbon or defined halogenated hydrocarbon {2}
219.4  DF  .~.~.~.~.~.~> Ingredient contains halogenated hydrocarbon
219.5  DF  .~.~.~.~.~.~> Ingredient contains water, e.g., an emulsion, dispersion, etc.

DEFINITION

Classification: 526/219.3

Contains specified ingredient other than the N=N or N-N group-containing compound or water, or defined hydrocarbon or defined halogenated hydrocarbon:

(under subclass 218.1) Subject matter wherein the polymerization process uses a specified material in addition to one containing an N=N or N-N group, e.g., an admixture of azobisisobutyronitrile dissolved in benzene or toluene, etc.

(1) Note. See the Class Definition, Lines With Other Classes and Within This Class, section II. B, for a discussion of the lines between this subclass and other subclasses in this Ccass. A patent which recites a polymerization process which utilizes (a) a material proper for subclasses 218.1+ in combination with either a specified or nonspecified amount of "hydrocarbon or halohydrocarbon" will not be classified in subclass 219.3 or its indents, but will be found in 219.6 or 218.1+; proper, however, for subclass 219.3 or its indents is the situation wherein when either the hydrocarbon or halohydrocarbon is defined in some degree (e.g., dihalogenated, dibrominated, contains specified chain length, boiling or freezing point range, etc.); (b) a "free radical" catalyst with either a specified or nonspecified amount of "hydrocarbon or halohydrocarbon" will be classified with the polymer providing this was the only remaining basis for classification.

SEE OR SEARCH CLASS

520, Synthetic Resins or Natural Rubbers, Glossary, for a further elaboration on the limitations on the use of these materials in this class.