Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1989-04-28
1990-10-09
Sever, Frank
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
21050029, 422129, B01D 6700
Patent
active
049621408
ABSTRACT:
The invention relates to an apparatus and process for the chemical modification of cellulosic dialysis membranes, wherein solutions of acid chlorides, acid anhydrides, esters, ketenes, diketenes, chlorocarbolic acid esters, carbonic acid diesters, 2,5-diketooxazolidines, isatinic anhydride, isocyanates, carbamoyl chlorides, thiocyanates, thiocarbamoyl chlorides, sulfonyl chlorides, sulfonic acid anhydrides, N-chlorosulfonamides, sulfinic acid chlorides, N-chlorosulfinamides, phosphoric acid anhydride, phosphonic anhydrides, phosphonic acid chlorides, phosphorous acid, phosphinic acid anydrides, ethylene oxide, ethylene sulfide, ethyleneimino, lactone, sultone and/or cleavable onium compounds, alkylaminoethanol sulfate esters, alkylsulfonethanol sulfate esters, vinylsulfonic acid or a salt thereof, vinylsulfonic acid ester, vinylphosphonic acid or a salt thereof, vinylphosphonic acid esters, allylsulfonic acid or a salt thereof, allysulfonic acid esters, allylphosphonic acid or a salt thereof, allyphosphonic acid esters, acrylamide, methacrylamide, acrylic acids or a salt thereof, acrylic acid ester, methacrylic acid or a salt thereof, methacrylic acid esters, acrylonitrile, crotonic acid or a salt thereof and/or crotonic acid ester and/or crotonic acid nitrile in polar solvents, if necessary together with the catalysts and auxiliary substances necessary for the reaction, are passed over one surface of the dialysis membrane.
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Akzo N.V.
Sever Frank
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