US PATENT SUBCLASS 528 / 157
.~.~.~ Aldehyde or derivative is ethylenically unsaturated


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}
129  DF  .~.~ With aldehyde or derivative {18}
157.~.~.~ Aldehyde or derivative is ethylenically unsaturated


DEFINITION

Classification: 528/157

(under subclass 129) Subject matter wherein a phenol or inorganic phenolate is reacted with an ethylenically unsaturated aldehyde or derivative.

SEE OR SEARCH CLASS

520, Synthetic Resins or Natural Rubbers, see the Glossary for a definition of the term "ethylenically unsaturated".

526, Synthetic Resins or Natural Rubbers,

315, for polymers wherein an ethylenically unsaturated aldehyde is the sole reactant.