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US5085777A Reverse osmosis membranes of polyamideurethane 失效
聚氨酯反渗透膜

Reverse osmosis membranes of polyamideurethane
摘要:
The present invention is directed to an improved reverse osmosis membrane that shows surprisingly improved solute rejection and permeation properties. The membrane includes a separating layer of a polyamideurethane formed in situ by reaction of a haloformyloxy-substituted acyl haldide with a diamine-treated substrate.
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