US PATENT SUBCLASS 526 / 195
.~.~.~ Material contains boron compound other than boron trihalide or non-metal organic complex of boron trihalide

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}
195.~.~.~ Material contains boron compound other than boron trihalide or non-metal organic complex of boron trihalide {1}
196  DF  .~.~.~.~> Boron bonded to hydrogen or carbon atom compound {2}

DEFINITION

Classification: 526/195

(under subclass 89) Subject matter wherein the specified material contains a compound of boron which boron compound is

other than (1) boron trihalide, per se; or (2) boron trihalide complexed with a nonmetal organic moiety.

SEE OR SEARCH THIS CLASS, SUBCLASS:

237+, for a polymerization process in the presence of boron trihalide, per se, or boron trihalide complexed with a nonmetal organic moiety, e.g., boron trihalide-etherate complex, etc.