US PATENT SUBCLASS 568 / 923-- .~.~.~.~.~ By crystallization of hydroxy compound or by forming hydroxy containing addition compound

US PATENT SUBCLASS 568 / 923
.~.~.~.~.~ By crystallization of hydroxy compound or by forming hydroxy containing addition compound

Current as of: June, 1999
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568 /	HD	ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES

*	DD	ORGANIC COMPOUNDS (Class 532, Subclass 1) {4}
300	DF	.~ OXYGEN CONTAINING (E.G., PERCHLORYLBENZENE, ETC.) {11}
700	DF	.~.~ Hydroxy containing (H of -OH may be replaced by a Group IA or IIA light metal) {10}
840	DF	.~.~.~ Acyclic {16}
913	DF	.~.~.~.~ Purification or recovery {8}
923		.~.~.~.~.~ By crystallization of hydroxy compound or by forming hydroxy containing addition compound

DEFINITION

Classification: 568/923

By crystallization or hydroxy compound or by forming hydroxy containing addition compound:

(under subclass 913) Processes which include crystallizing the hydroxy compound or combining the hydroxy compound with a material to form an addition compound from which the desired -OH containing compound is recovered.

(1) Note. Included herein, for example, are processes of purifying on -OH containing compound by first reacting it with an aldehyde to form an acetal, isolating and saponifying the acetal into a pure -OH containing compound.