US PATENT SUBCLASS 528 / 128
.~.~.~ With nonphenolic or nonketone reactant

Current as of: June, 1999
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528 /   HD   SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE CLASS 520 SERIES

*  DD  SYNTHETIC RESINS (Class 520, Subclass 1) {23}
86  DF  .~ FROM PHENOL, PHENOL ETHER, OR INORGANIC PHENOLATE {15}
125  DF  .~.~ From ketone-containing phenolic reactant or with ketone-containing reactant {3}
128.~.~.~ With nonphenolic or nonketone reactant

DEFINITION

Classification: 528/128

(under subclass 125) Subject matter wherein a phenol, phenol ether, or inorganic phenolate is reacted with at least one ketone reactant which is devoid of any phenolic group.