US PATENT SUBCLASS 568 / 852
.~.~.~.~ Polyhydroxy


Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use



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}
852.~.~.~.~ Polyhydroxy {9}
853  DF  .~.~.~.~.~> Polyalkylol substituted alkane (e.g., pentaerythritol, trimethylolethane, ect.) {1}
855  DF  .~.~.~.~.~> Acetylenically unsaturated {1}
857  DF  .~.~.~.~.~> Ethylenically unsaturated
858  DF  .~.~.~.~.~> Preparing by alcoholysis, hydrolysis or saponification of an ester
859  DF  .~.~.~.~.~> Preparing by hydrolysis or saponification of alkyl polyhalide or halohydrin
860  DF  .~.~.~.~.~> Preparing by hydroxylation at point of ethylenic unsaturation
861  DF  .~.~.~.~.~> Preparing by reduction (e.g., by hydrogenation, etc.) {3}
866  DF  .~.~.~.~.~> Preparing from ether {1}
868  DF  .~.~.~.~.~> Purification or recovery {3}


DEFINITION

Classification: 568/852

Polyhydroxy:

(under subclass 840) Compounds which contain at least two -OH groups.

(1) Note. This subclass provides for such compounds as glycerine, the glycols, the pinacones, etc.

SEE OR SEARCH CLASS

554, Organic Compounds,

156+, and 160 for processes which state that they are for the production of glycerine but are for no more than the hydrolysis or saponification of fats or fatty oils.