| 摘要 |
PCT No. PCT/SE87/00297 Sec. 371 Date Feb. 27, 1989 Sec. 102(e) Date Feb. 27, 1989 PCT Filed Jun. 25, 1987 PCT Pub. No. WO88/10140 PCT Pub. Date Dec. 29, 1988.A method for improving the separation properties of semi-permeable membranes having penetrating defects due to the manufacturing process or subsequent handling and membranes accordingly improved. During a certain time one side of the membrane is exposed to a first chemical reaction partner and the other side of the membrane is exposed to a second chemical reaction partner so that in the penetrating membrane defects a chemical reaction will take place in a boundary region between the two reaction partners forming occlusions blocking said defects.
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