US PATENT SUBCLASS 536 / 107
.~.~.~ Esters

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

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {1}
1.11  DF  .~ Carbohydrates or derivatives {15}
102  DF  .~.~ Starch or derivative {6}
107.~.~.~ Esters {3}
108  DF  .~.~.~.~> Ether-esters or mixed esters
109  DF  .~.~.~.~> Phosphorus or sulfur containing
110  DF  .~.~.~.~> Carboxylic

DEFINITION

Classification: 536/107

(under subclass 102) Compounds which result from the reaction of a hydroxyl group of a starch with an acid.

(1) Note. The esterifying acid may be organic or inorganic.

(2) Note. This subclass does not provide for compounds formed when the sole acid function entering into the formation is a halogen.

SEE OR SEARCH THIS CLASS, SUBCLASS:

47, for nitrogen containing starch molecules connected via ester linkage.

48, for nitrogen containing starch esters.

106, for starch esters that are cross-linked.