US PATENT SUBCLASS 525 / 330.2
.~.~.~.~.~ Hydrolyzed; neutralized; or metal containing chemical treating agent

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}
329.7  DF  .~.~.~.~ Polymer derived from acrylic or methacrylic acids, acid halides or salt monomers {4}
330.2.~.~.~.~.~ Hydrolyzed; neutralized; or metal containing chemical treating agent

DEFINITION

Classification: 525/330.2

Hydrolyzed; neutralized; or metal containing chemical treating agent:

(under subclass 329.7) Product wherein a chemical modification of the solid polymer is described as hydrolysis or neutralization; or wherein a metal con+taining chemical treating agent has been employed.

(1) Note. For purposes of this subclass, hydrolysis relates to the addition of water to a carboxylic acid chloride or carboxylic acid ester to form a free carboxyl group.

Chemical treatment of acid chloride containing polymer with an aqueous system is presumed to be hydrolysis in absence of disclosure otherwise.

Chemical treatment of ester containing polymer with aqueous acid or base is presumed to be hydrolysis in absence of disclosure otherwise.

(2) Note. For purposes of this subclass, neutralization relates to reaction of an acid group (e.g., carboxyl, etc.) with a base to form a salt. The bases include alkali or alkaline earth hydroxides.

(3) Note. The metal containing chemical treating agent need only be present during a chemical modification step; included in this subclass however, are systems wherein a metal atom becomes chemically bonded to the solid polymer. The chemical bond can be ionic or covalent in nature, or any of the "complex" bonding mechanisms as in ii (PI) bonding, coordination, etc.