US PATENT SUBCLASS 528 / 373
.~ FROM SULFUR-CONTAINING REACTANT

Current as of: June, 1999
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528 /   HD   SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE CLASS 520 SERIES

*  DD  SYNTHETIC RESINS (Class 520, Subclass 1) {23}
373.~ FROM SULFUR-CONTAINING REACTANT {5}
374  DF  .~.~> From mercaptan or mercaptide-containing reactant {2}
377  DF  .~.~> From heterocyclic compound containing a sulfur atom as a ring member {2}
381  DF  .~.~> From inorganic sulfur-containing reactant {4}
390  DF  .~.~> From organic reactant containing a -C(=S)-group
391  DF  .~.~> From organic reactant containing a sulfur to oxygen bond, e.g., -S(=O), etc.

DEFINITION

Classification: 528/373

(under subclass 1) Subject matter under Class 520, ... involving polymers derived from at least one sulfur-containing reactant or processes of polymerizing; polymerizable compositions containing as a reactant a sulfur-containing material or processes of preparing.

SEE OR SEARCH THIS CLASS, SUBCLASS:

480+, for processes of preparing a polymer not involving a chemical modification of the polymer, by the addition of a material thereto, and for chemically modifying material other than the polymer. Subclasses 480+ also provide for processes of admixing with a broadly claimed nonreactant material.

SEE OR SEARCH CLASS

525, Synthetic Resins or Natural Rubbers,

343+, for a process of chemically modifying a solid polymer derived from ethylenic monomers only in the presence of a sulfur-containing material; subclasses 256+ for a homopolymer derived from an ethylenically unsaturated sulfur heterocyclic compound or for a sulfur-containing interpolymer wherein all of the reactants are ethylenically unsaturated and at least one of said reactants contains a sulfur atom as part of a heterocyclic ring, and subclasses 286+ for a polymer derived from an ethylenically unsaturated sulfur-containing reactant as sole monomer or for a sulfur-containing interpolymer wherein all of the reactants are ethylenically unsaturated and at least one of said reactants contains a sulfur atom.