US PATENT SUBCLASS 525 / 220
.~.~.~.~ Solid polymer derived from reactant containing a carbonyl group other than as part of a carboxylic acid or derivative

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

*  DD  SYNTHETIC RESINS (Class 520, Subclass 1) {4}
50  DF  .~ MIXING OF TWO OR MORE SOLID POLYMERS; MIXING OF SOLID POLYMER OR SICP WITH SICP OR SPFI; MIXING OF SICP WITH AN ETHYLENIC AGENT; MIXING OF SOLID POLYMER WITH A CHEMICAL TREATING OR ETHYLENIC AGENT; OR PROCESSES OF FORMING OR REACTING; OR THE RESULTANT PRODUCT OF ANY OF THE ABOVE OPERATIONS {32}
55  DF  .~.~ At least one solid polymer derived from ethylenic reactants only {25}
191  DF  .~.~.~ Polymer mixture of two or more solid polymers derived from ethylenically unsaturated reactants only; or mixtures of said polymer mixture with a chemical treating agent; or products or processes of preparing any of the above mixtures {23}
220.~.~.~.~ Solid polymer derived from reactant containing a carbonyl group other than as part of a carboxylic acid or derivative

DEFINITION

Classification: 525/220

Solid polymer derived from reactant containing a carbonyl acid or derivative:

(under subclass 191) Subject matter wherein the mixture contains a solid polymer derived from an ethylenic reactant which contains a carbonyl group () other than as part of a carboxylic acid or derivative (e.g., methylisopropenyl ketone, etc.).

SEE OR SEARCH THIS CLASS, SUBCLASS:

221, and 222+, for a mixture containing a solid polymer derived from a carboxylic acid or derivative.