US PATENT SUBCLASS 525 / 461
.~.~ Solid polymer derived from O-C(=O)-O- or hal-C(=O)-containing reactant

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}
461.~.~ Solid polymer derived from O-C(=O)-O- or hal-C(=O)-containing reactant {1}
462  DF  .~.~.~> Solid polymer derived from O-C(=O)-O- or hal-C(=O)-containing reactant and polyhydroxy reactant {8}

DEFINITION

Classification: 525/461

Solid polymer derived from -OO- or halcontaining reactant:

(under subclass 50) Subject matter involving processes of mixing solid polymer derived from -OO- or hal reactant with additional solid polymer, specified polymer-forming ingredients, specified intermediate condensation product, chemical treating agent, or ethylenic agent; processes of reacting the above mixtures or products resulting from the above processes.