Coating processes – Foraminous product produced – Filter – sponge – or foam
Patent
1993-01-05
1994-11-01
Beck, Shrive
Coating processes
Foraminous product produced
Filter, sponge, or foam
427246, 427339, B05D 500
Patent
active
053606361
ABSTRACT:
A process for improving the biocompatibility of cellulosic film membranes is characterized by the fact that the film membranes are coated during or after their preparation with cellulose ethers and/or cellulose esters and/or cellulose carbamates whose structures conform to the formulas ##STR1## wherein Cell is the skeleton of the unmodified cellulose molecule without hydroxyl groups; x conforms to the degree of modification, which is in the range of 0.002 to 3; R is an (optionally substituted) alkyl and/or alkenyl and/or aryl and/or arylalkyl group and the carbon chain of the group R contains 1 to 36 carbon atoms and may be interrupted by hetero atoms such as O, S, N, and contains basic and/or acidic groups such as 13 NR'.sub.2, --COOR', and/or --SO.sub.3 R' or their salts, wherein R'=H or R.
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Diamantoglou Michael
Duweg Gustav
Reiche Angelika
Richter Edmund
Rintelen Thomas
Akzo NV
Beck Shrive
Dudash Diana L.
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