US PATENT SUBCLASS 526 / 318
.~.~.~ Carboxylic acid contains ester group

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

*  DD  SYNTHETIC RESINS (Class 520, Subclass 1) {8}
72  DF  .~ POLYMERS FROM ONLY ETHYLENIC MONOMERS OR PROCESSES OF POLYMERIZING, POLYMERIZABLE COMPOSITIONS CONTAINING ONLY ETHYLENIC MONOMERS AS REACTANTS OR PROCESSES OF PREPARING {43}
317.1  DF  .~.~ From carboxylic acid monomer {7}
318.~.~.~ Carboxylic acid contains ester group

DEFINITION

Classification: 526/318

Block copolymer derived from vinyl(idene) chloride:

(under subclass 317.1) Subject matter wherein the polymer is a block copolymer derived from vinyl chloride or vinylidene chloride.

(1) Note. To be proper for this subclass, the initial block copolymer must be derived from vinyl or vinylidene chloride.