US PATENT SUBCLASS 536 / 49
.~.~.~.~.~ Ether-esters or mixed 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}
18.7  DF  .~.~ Nitrogen containing {13}
45  DF  .~.~.~ Starch derivatives {4}
48  DF  .~.~.~.~ Esters {1}
49.~.~.~.~.~ Ether-esters or mixed esters

DEFINITION

Classification: 536/49

(under subclass 48) Compounds which (1) additionally contain an ether moiety or (2) contain a plurality of diverse ester radicals.

(1) Note. The ether moiety may exist (1) independently of the ester moiety, as in nitrogen containing ethyl starch acetate, (2) by connection to the starch via an intervening ester linkage as in a nitrogen containing starch

ethoxyacetate, or (3) by direct connection to the starch with the ester moiety connected to the ether moiety as in a a nitrogen containing acetoxyethyl starch.