US PATENT SUBCLASS 554 / 24
.~.~ Chemical modification of oils to improve their drying properties and products thereof

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.~.~ Chemical modification of oils to improve their drying properties and products thereof {3}
25  DF  .~.~.~> Polymerization process and product thereof (e.g., thermal polymerization, oxidative polymerization, etc.) {3}
30  DF  .~.~.~> Esterification or molecular rearrangement (e.g., intra- or inter-esterification, etc.)
31  DF  .~.~.~> Dehydration or carbon to carbon unsaturation formation (e.g., dehydrating hydroxylated fatty acids or oils, forming conjugated unsaturation by dehydrogenation, dehalogenation, dehydrohalogenation, etc.) {3}

DEFINITION

Classification: 554/24

(under subclass 1) Processes which are directed to chemically treating fatty oils to impart drying or film-forming properties thereto, and the products produced by said treatment.

(1) Note. Drying oils are characterized by becoming hard and resinous in contact with the air (absorbing oxygen) and are especially useful in the manufacture of varnishes and coating compositions. Drying oils contain a great proportion of polyethylenically unsaturated acids, usually conjugated. This subclass includes processes of treating the commonly known drying or semi-drying oils, such as linseed oil (which may contain inhibitors for satisfactory drying), to improve their drying properties, and processes of treating nondrying oils, such as castor oil, to impart drying properties thereto.

(2) Note. Fatty compounds produced from drying oils, which compounds no longer retain drying properties, are classified where appropriate elsewhere.

SEE OR SEARCH CLASS

208, Mineral Oils: Processes and Products,

1, for mineral oil products which have the properties of natural drying oils and processes of preparing the same.