US PATENT SUBCLASS 536 / 50
.~.~.~.~ Ethers

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}
50.~.~.~.~ Ethers

DEFINITION

Classification: 536/50

(under subclass 45) Compounds which have the general formula ROR', wherein RO is the starch residue moiety and R' is an organic radical.

(1) Note. Nitrogen containing starch ethers can be made by substituting an organic radical for the hydrogen atom of a portion of the hydroxyl groups of a starch.

(2) Note. The attached organic radical R' is referred to as the etherifying radical.

SEE OR SEARCH THIS CLASS, SUBCLASS:

47, for nitrogen containing starch ethers that are cross-linked.