| 摘要 |
A hydrophilic, porous membrane of crosslinked cellulose hydrate (a) has been crosslinked with diepoxides with water solubility at least 0.2 mol/l and has degree of crosslinking of 0.05-0.4, (b) is not less hydrophilic than the initial cellulose hydrate membrane, and (c) has wt. loss of less than 10% after 1 hr. in 10% NaOH at 7 deg C. Pref. the membrane is a micro- or ultra-filtration membrane or a reinforced membrane, has degree of crosslinking of 0.12-0.25, and loss of less than 5% after 1 hr. in 10% NaOH at 70 deg C, and is crosslinked with 5-ethyl-1,3-diglycidyl-5-methylhydantoin (I).
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| 申请人 |
SARTORIUS AG, 37075 GOETTINGEN, DE |
发明人 |
NUSSBAUMER, DIETMAR, DR., 37079 GOETTINGEN, DE;HOERL, HANS-HEINRICH, DR., 37120 BOVENDEN, DE;DEMMER, WOLFGANG, DR., 37077 GOETTINGEN, DE;BEER, HANS, DR., 37136 WAAKE, DE;WUENN, EBERHARD, 37077 GOETTINGEN, DE |
