| 摘要 |
1276594 Reverse osmosis membrane CONSIGLIO NAZIONALE DELLE RICERCHE and MONTECATINI EDISON SpA 8 July 1970 [8 July 1969] 33043/70 Heading B1X [Also in Divisions B5 and C3] Reverse osmosis membranes are made from polymeric material having repeating units of general formula: where X represents a valency bond or a divalent organic radical, n is O or an integer from 1 to 8 and R represents an alkyl (preferably methyl or ethyl), cycloalkyl, aryl, alkoxy aryloxy alkoxyaryl or halogen substituents. When n is greater than 1, the substituents R may be the same or different the membranes may be coupled to porous supports, preferably having the same composition when membranes according to the invention are used in standard reverse osmosis cells, saline rejection of over 99% may be obtained. |
