US PATENT SUBCLASS 525 / 137-- .~.~.~.~.~ Phenolic reactant prior to contact with aldehyde or aldehyde-type reactant contains at least two aryl rings each of which contains phenolic substituents

US PATENT SUBCLASS 525 / 137
.~.~.~.~.~ Phenolic reactant prior to contact with aldehyde or aldehyde-type reactant contains at least two aryl rings each of which contains phenolic substituents

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}
132	DF	.~.~.~ With saturated phenolic reactant or polymer thereof; or with solid copolymer derived from at least one phenolic reactant wherein at least one of the reactants forming the solid copolymer is saturated; or with SPFI wherein at least one of the necessary ingredients is a phenolic reactant or with a reaction product thereof; or with a SICP containing a phenolic group Si-H or Si-C bond {8}
134	DF	.~.~.~.~ Contacting with aldehyde or aldehyde-type reactant or polymer therefrom {9}
137		.~.~.~.~.~ Phenolic reactant prior to contact with aldehyde or aldehyde-type reactant contains at least two aryl rings each of which contains phenolic substituents

DEFINITION

Classification: 525/137

Phenolic reactant prior to contact with aldehyde or aldehyde-type reactant contains at least two aryl rings each of which contains phenolic substituents:

(under subclass 134) Subject matter wherein there is present prior to contact with the aldehyde or aldehyde-type phenolic reactant containing at least two aryl rings each of which contains a phenolic OH group.

(1) Note. The rings may be fused as in 1, 8-dihydroxy naphthalene or as in bisphenol A. Diphenyl ether is not considered as having two phenolic moieties. However, the following two compounds identified below would be considered as having two phenolic moieties.

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