US PATENT SUBCLASS 568 / 602
.~.~.~.~.~.~.~ Hydroxy bonded directly to each end of a chain which is polyoxymethylene only (e.g., paraformaldehyde, etc., wherein H of -OH may be replaced by a Group IA or IIA light metal)

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}
579  DF  .~.~ Ethers {11}
591  DF  .~.~.~ Plural oxygens bonded directly to the same carbon (e.g., acetals, ketals, orthoesters, orthocarbonates, etc.) {2}
594  DF  .~.~.~.~ Acyclic {6}
600  DF  .~.~.~.~.~ At least three oxygens containing {2}
601  DF  .~.~.~.~.~.~ Plural oxyalkylene groups bonded directly to each other {1}
602.~.~.~.~.~.~.~ Hydroxy bonded directly to each end of a chain which is polyoxymethylene only (e.g., paraformaldehyde, etc., wherein H of -OH may be replaced by a Group IA or IIA light metal)

DEFINITION

Classification: 568/602

Hydroxy bonded directly to each end of a chain which is polyoxymethylene only (e.g., paraformaldehyde, etc.):

(under subclass 601) Compounds which contain two or more successive oxymethylene groups having hydroxy groups bonded

directly to each end.

(1) Note. Included in this subclass are the polymers of formaldehyde known as paraformaldehyde.

SEE OR SEARCH CLASS

528, Synthetic Resins,

230+, for synthetic resins made by polymerizing aldehydes.

549, Organic Compounds,

353, and 367+ for polyhetero-oxygen heterocyclic carbon compounds resulting from the polymerization of aldehydes only.