US PATENT SUBCLASS 554 / 31
.~.~.~ Dehydration or carbon to carbon unsaturation formation (e.g., dehydrating hydroxylated fatty acids or oils, forming conjugated unsaturation by dehydrogenation, dehalogenation, dehydrohalogenation, etc.)

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

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {1}
1  DF  .~ Fatty compounds having an acid moiety which contains the carbonyl of a carboxylic acid, salt, ester, or amide group bonded directly to one end of an acyclic chain of at least seven (7) uninterrupted carbons, wherein any additional carbonyl in the acid moiety is (1) part of an aldehyde or ketone group, (2) bonded directly to a noncarbon atom which is between the additional carbonyl and the chain, or (3) attached indirectly to the chain via ionic bonding {23}
24  DF  .~.~ Chemical modification of oils to improve their drying properties and products thereof {3}
31.~.~.~ Dehydration or carbon to carbon unsaturation formation (e.g., dehydrating hydroxylated fatty acids or oils, forming conjugated unsaturation by dehydrogenation, dehalogenation, dehydrohalogenation, etc.) {3}
32  DF  .~.~.~.~> Heavy metal containing compound utilized (e.g., as catalyst, promoter, etc.)
33  DF  .~.~.~.~> Sulfur containing compound utilized
34  DF  .~.~.~.~> Group IA or IIA light metal containing compound utilized

DEFINITION

Classification: 554/31

(under subclass 24) Processes which are directed to dehydrating a starting material or forming carbon to carbon unsaturation in a starting material to impart drying properties thereto.

(1) Note. Provided for herein are processes directed to (1) the removal of water from compounds such as hydroxylated fatty acids or oils, or (2) the formation of conjugated unsaturation by dehydrogenation or dehalohydrogenation, etc.