Modified cellulose for biocompatible dialysis membranes III and process for preparation thereof
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United States of America Patent
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Mar 5, 1991
Grant Date -
N/A
app pub date -
Feb 27, 1989
filing date -
Feb 25, 1988
priority date (Note) -
Expired
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Abstract
A modified cellulose for biocompatible dialysis membranes having a structure represented by the formula ##STR1## wherein cell is cellulose or chitin, in each case without hydroxyl groups, s=3 in the case of cellulose and s=2 in the case of chitin, R' is CH.sub.3 and/or C.sub.2 H.sub.5 and/or C.sub.3 H.sub.7, X denotes specified functional groups, R' is H or R, R'' denotes R, x+t=0.75 to 2.85, t=0 to 2.85, x=0 to 2.85, and r=0 to 1. A process for preparation of the cellulose derivatives is also disclosed.
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