| http://www.w3.org/ns/prov#value | - The membrane is a composite of a microporous support membrane and an ultrathin permselective membrane, the permselective membrane being made from a polyamide-polyether block copolymer having the general form: ##STR1## where PA is a saturated aliphatic polyamide...http://www.google.com/patents/US4963165?utm_source=gb-gplus-sharePatent US4963165 - Composite membrane, method of preparation and useAdv
|
