US PATENT SUBCLASS 536 / 81
.~.~.~.~.~.~.~ Stabilizing

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}
58  DF  .~.~.~ Esters {3}
63  DF  .~.~.~.~ Carboxylic acid esters {5}
69  DF  .~.~.~.~.~ Acetates {3}
76  DF  .~.~.~.~.~.~ Subsequent treatment process {6}
81.~.~.~.~.~.~.~ Stabilizing

DEFINITION

Classification: 536/81

(under subclass 76) Processes whereby the physical or chemical stability of cellulose acetate is increased.