US PATENT SUBCLASS 526 / 201
.~.~.~ Material contains previously formed normally solid polymer which is distinct from polymer to be formed and is a polymer formed from at least one ethylenic monomer

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}
89  DF  .~.~ Polymerizing in the presence of a specified material other than monomer {28}
201.~.~.~ Material contains previously formed normally solid polymer which is distinct from polymer to be formed and is a polymer formed from at least one ethylenic monomer {2}
202  DF  .~.~.~.~> Normally solid polymer contains free alcohol group or alcoholate thereof
203  DF  .~.~.~.~> Normally solid polymer is formed from ethylenically unsaturated dicarboxylic acid, ester, salt, or anhydride thereof

DEFINITION

Classification: 526/201

(under subclass 89) Subject matter wherein the specified material contains at least one distinct normally solid preformed polymer which has been derived from at least one ethylenically unsaturated material.

(1) Note. Polymers proper for this subclass must be either distinct from the polymers formed either in the nature or amounts of individual monomers therein, or in the manner in which they are formed.

SEE OR SEARCH THIS CLASS, SUBCLASS:

102, for a process of polymerizing in the presence of a transition metal-containing material and a preformed ethylenic polymer.

204, for a process of polymerizing in the presence of a melamine-formaldehyde reaction product.

208, for a process of polymerizing in the presence of a urea-formaldehyde reaction product.

213+, for a process of polymerizing in the presence of a reaction product of a saturated carboxylic acid and a polyhydric alcohol.

SEE OR SEARCH CLASS

525, Synthetic Resins or Natural Rubbers,

50+, for a process of polymerizing an ethylenically unsaturated monomer in the presence of a solid preformed polymer wherein the intent is to form a resinous composition containing the previously formed polymer or wherein the preformed polymer reacts with the ethylenic monomer to form a modified previously formed solid polymer.