Coated microporous materials having filtration and adsorption properties and their use in fluid purification processes

• Main Authors: KNOX CAROL L, GUO QUNHUI, PARRINELLO LUCIANO M, REARICK BRIAN K, DUFFY SHAWN P, PARISE NICHOLAS J
• Format: Patent
• Language: Chinese; English
• Published: 29.06.2016
• Subjects: PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TRANSPORTING

The present invention is directed to microfiltration and ultrafiltration membranes comprising a microporous material. The microporous material comprises: (a) a polyolefin matrix present in an amount of at least 2 percent by weight, (b) finely divided, particulate, substantially water-insoluble silica filler distributed throughout said matrix, said filler constituting from about 10 percent to about 90 percent by weight of said coated microporous material substrate, (c) at least 20 percent by volume of a network of interconnecting pores communicating throughout the coated microporous material, and (d) at least one coating composition applied to at least one surface of the membrane to adjust the surface energy of the membrane. 本发明涉及微滤和超滤膜包含微多孔材料。该微多孔材料包含：(a)存在量为至少2重量％的聚烯烃基质，(b)分布在整个所述基质中的细粉碎的、粒状的、基本上水不溶性的二氧化硅填料，所述填料占所述涂覆的微多孔材料基底的约10重量％-约90重量％，(c)至少20体积％的在整个所述涂覆的微多孔材料中连通的互连孔网络，和(d)至少一种涂料组合物，其施涂到所述膜的至少一个表面上以调节所述膜的表面能。