US PATENT SUBCLASS 525 / 321
.~.~.~.~.~.~ Block copolymer derived from acyclic hydrocarbon containing five or more carbon atoms

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}
319  DF  .~.~.~.~ Ethylenic reactant is acyclic hydrocarbon {3}
320  DF  .~.~.~.~.~ Acyclic hydrocarbon contains five or more carbon atoms {1}
321.~.~.~.~.~.~ Block copolymer derived from acyclic hydrocarbon containing five or more carbon atoms

DEFINITION

Classification: 525/321

Block copolymer derived from acyclic hydrocarbon containing

five or more carbon atoms:

(under subclass 320) Subject matter wherein the polymer is a block copolymer derived from an unsaturated acyclic reactant having at least five carbon atoms.

(1) Note. To be proper for this subclass, the initial block copolymer must be derived from an acyclic hydrocarbon containing five or more carbon atoms.