US PATENT SUBCLASS 525 / 323
.~.~.~.~.~.~ Block copolymer derived from propylene


Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use



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}
322  DF  .~.~.~.~.~ Acyclic hydrocarbon is propylene {1}
323.~.~.~.~.~.~ Block copolymer derived from propylene


DEFINITION

Classification: 525/323

Block copolymer derived from propylene:

(under subclass 322) Subject matter wherein the polymer is a block copolymer derived from propylene.

(1) Note. To be proper for this subclass, the initial block copolymer must be derived from propylene.