US PATENT SUBCLASS 525 / 309
.~.~.~.~.~.~.~ Ester derived from an unsaturated carboxylic acid is reacted in the presence of a solid polymer

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}
242  DF  .~.~.~ Polymer derived from ethylenic reactants only mixed with ethylenic reactant {21}
298  DF  .~.~.~.~ Ethylenic reactant contains an oxygen atom {5}
302  DF  .~.~.~.~.~ Oxygen atom is part of a carboxylic acid ester group {5}
308  DF  .~.~.~.~.~.~ Ester is derived from an unsaturated carboxylic acid {1}
309.~.~.~.~.~.~.~ Ester derived from an unsaturated carboxylic acid is reacted in the presence of a solid polymer {1}
310  DF  .~.~.~.~.~.~.~>.~ Ester reactant derived from an unsaturated carboxylic acid is reacted in the presence of a solid polymer substrate derived from a polyene hydrocarbon

DEFINITION

Classification: 525/309

Ester derived from an unsaturated carboxylic acid is reacted in the presence of a solid polymer:

(under subclass 308) Subject matter wherein the unsaturated ester is reacted in the presence of a solid polymer.

(1) Note. The ester may also be present in the solid polymer, but it must be present either as an unpolymerized reactant or as a liquid polymer, e.g., poly(styrene-methyl methacrylate) is treated with either butyl acrylate or liquid poly(methyl acrylate), etc.