US PATENT SUBCLASS 526 / 91-- .~.~.~.~ In presence of water

US PATENT SUBCLASS 526 / 91
.~.~.~.~ In presence of water

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}
90	DF	.~.~.~ Material contains transition metal or compound thereof {15}
91		.~.~.~.~ In presence of water {2}
92	DF	.~.~.~.~.~> Carbon-metal bond
93	DF	.~.~.~.~.~> Group VIII transition metal (Fe, Co, Ni, Ru, Rh, Pd, Os, Ir, Pt) {1}

DEFINITION

Classification: 526/91

(under subclass 90) Subject matter wherein transition material is in contact with water during the polymerization reaction.

(1) Note. The amount of water present during the polymerization reaction is of no significance (e.g., diluent, catalyst, activator, etc)..

(2) Note. Water of hydration, per se, is not considered as being water for this subclass.

(3) Note. The use of a catalyst system or other material which has been prepared in the presence of water is not proper for this subclass unless it is understood that free water remains after the material has been formed.