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公开(公告)号:US4747954A
公开(公告)日:1988-05-31
申请号:US776347
申请日:1985-09-16
申请人: Walter L. Vaughn , Rafael E. Guerra
发明人: Walter L. Vaughn , Rafael E. Guerra
IPC分类号: B01D15/00 , C01D3/14 , C01D3/16 , C01D15/04 , C01F7/00 , C01F11/00 , C01G3/00 , C01G9/00 , C01G21/00 , C01G37/00 , C01G49/00 , C01G53/00 , C02F1/28
CPC分类号: C01G9/003 , C01D15/04 , C01D3/145 , C01D3/16 , C01F11/005 , C01F7/00 , C01G21/003 , C01G3/003 , C01G37/003 , C01G49/0009 , C01G53/003 , C22B3/42 , C01P2006/12 , Y02P10/234
摘要: Particles, fibers, or filaments of ethylene/carboxylic acid copolymers or terpolymers, especially in highly porous or microporous form, are employed in removing contaminants from solution in aqueous and/or organic liquids, especially metal contaminants. The porous polymers, having a surface area/weight ratio of at least about 0.5 m.sup.2 /gm, are useful alone, but may also be used in conjunction with, or in tandem with, previously known ion exchange resins such as polyacrylic acid crosslinked with divinylbenzene.
摘要翻译: 乙烯/羧酸共聚物或三元共聚物,特别是高度多孔或微孔形式的颗粒,纤维或长丝,用于从水溶液和/或有机液体,特别是金属污染物中的溶液中除去污染物。 具有至少约0.5m 2 / gm的表面积/重量比的多孔聚合物可以单独使用,但也可以与先前已知的离子交换树脂结合使用或与之一起使用,例如与二乙烯基苯交联的聚丙烯酸 。
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2.
公开(公告)号:US4380616A
公开(公告)日:1983-04-19
申请号:US263647
申请日:1981-05-14
CPC分类号: C08F10/00 , Y10S526/907
摘要: Olefins are polymerized in the presence of chromium-containing catalysts which have been improved by depositing the chromium onto the inorganic oxide support in the vapor phase rather than as an inorganic or organic compound. The resulting polymers exhibit a higher molecular weight as compared to those polymers prepared in the presence of such chromium-containing catalysts prepared in the conventional manner.
摘要翻译: 烯烃在含铬催化剂的存在下聚合,其通过将铬沉积在气相中的无机氧化物载体上而不是无机或有机化合物而得到改善。 与在常规方法制备的这种含铬催化剂存在下制备的聚合物相比,所得聚合物显示出更高的分子量。
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公开(公告)号:US4362654A
公开(公告)日:1982-12-07
申请号:US263642
申请日:1981-05-14
摘要: Inorganic oxide supported chromium-containing catalysts are improved by depositing the chromium onto the inorganic oxide support in the vapor phase rather than as an inorganic or organic compound. Polymers resulting from polymerizing one or more .alpha.-olefins in the presence of such catalysts exhibit a higher molecular weight as compared to those polymers prepared in the presence of such chromium-containing catalysts prepared in the conventional manner.
摘要翻译: 无机氧化物负载的含铬催化剂通过将铬沉积在气相中的无机氧化物载体上而不是无机或有机化合物而得到改善。 与在常规方法制备的这种含铬催化剂存在下制备的那些聚合物相比,在这种催化剂存在下聚合一种或多种α-烯烃产生的聚合物表现出较高的分子量。
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