US PATENT SUBCLASS 536 / 90
.~.~.~.~ Mixed 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}
56  DF  .~.~ Cellulose or derivative {4}
84  DF  .~.~.~ Ethers {7}
90.~.~.~.~ Mixed ethers {1}
91  DF  .~.~.~.~.~> Hydroxyalkyl containing

DEFINITION

Classification: 536/90

(under subclass 84) Compounds which contain at least two diverse organic radicals attached via ether linkages to the cellulose residue moiety.

(1) Note. This subclass provides for methyl benzyl cellulose, for example.

SEE OR SEARCH THIS CLASS, SUBCLASS:

44, for nitrogen containing mixed ethers of cellulose.