US PATENT SUBCLASS 526 / 75
.~.~ Including step of synthesis of monomer or pre-polymer

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}
75.~.~ Including step of synthesis of monomer or pre-polymer {1}
76  DF  .~.~.~> Polymerizable material derived from petroleum fraction

DEFINITION

Classification: 526/75

(under subclass 72) Subject matter which includes the chemical synthesis of a monomer or a prepolymer and subsequent polymerization thereof.

(1) Note. A prepolymer for purposes of the subclass is a low-molecular-weight-polymeric material prepared from a single source product and which is regarded as an intermediate reactant rather than as a final product and which is further polymerizable by a continuation of the same reaction as used in preparing said prepolymer.

(2) Note. Included herein are processes involving dimerization or trimerization of monomer.

SEE OR SEARCH CLASS

260, Chemistry of Carbon Compounds, and its daughter classes, for a method of preparing a polymerizable monomer or prepolymer.