US PATENT SUBCLASS 525 / 332.5
.~.~.~.~.~ Vulcanized in the presence of a chemical treating agent, e.g., cured, crosslinked, etc.

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}
326.1  DF  .~.~.~ Chemically after treated solid polymers derived from ethylenically unsaturated monomers only {24}
331.9  DF  .~.~.~.~ Polymer derived from monomer containing at least two ethylenic groups or diene rubber {7}
332.5.~.~.~.~.~ Vulcanized in the presence of a chemical treating agent, e.g., cured, crosslinked, etc. {1}
332.6  DF  .~.~.~.~.~.~> Sulfur containing chemical treating agent {1}

DEFINITION

Classification: 525/332.5

Vulcanized in the presence of a chemical treating agent, e.g., cured, crosslinked, etc.:

(under subclass 331.9) Product wherein said solid polymer is vulcanized in the presence of a chemical treating agent.

(1) Note. The terms curing or hardening are presumed to be synonymous with vulcanizing or cross-linking in absence of disclosure to the contrary. For the instant subclass, any other language will be sufficient which shows that the chemical modification changes the system from thermoplastic (or soluble) to thermosetting (or insoluble). The term chain-extending is presumed not to express cross-linking in absence of disclosure to contrary.