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    • 23. 发明申请
    • FILTER MEDIA FOR LIQUID PURIFICATION TO REMOVE TRACE METALS
    • 用于液体净化的过滤介质以去除痕量金属
    • US20110259818A1
    • 2011-10-27
    • US13092447
    • 2011-04-22
    • Masao TamadaNoriaki SekoYuji UekiToshihide TakedaMasanori NakanoShin-ichi KawanoMitsugu AbeKiyokazu Miyagawa
    • Masao TamadaNoriaki SekoYuji UekiToshihide TakedaMasanori NakanoShin-ichi KawanoMitsugu AbeKiyokazu Miyagawa
    • B01D39/16
    • B01D39/1623B01D2239/0216B01D2239/0414B01D2239/0622B01D2239/1233B01D2239/1291
    • Filter media for liquid purification, which can remove metal compounds or metal ions containing in polishing or washing liquids such as alkali, acid solution or ultra-pure water used for silicon wafers of semiconductors. Removal of metals from various kind of liquid such as inorganic chemicals, organic solvent, or industrial waste water are also the subject of the present invention.The Filter media made of melt-blown nonwoven substrate comprising of aethylene/norbornene copolymer represented by the following formula [1] and/or a polycyclic norbornene polymer represented by the following formulae [2](a),(b),(c) as raw material, wherein said ethylene/norbornene copolymer and said polycyclic norbornene polymer have a glass transition temperature (Tg) selected in a range from 80 to 180° C. and melt volume rate (MVR) (ISO 1133, measuring conditions: 260° C., 2.16 kg) of 30 cm3/10 min or more, and wherein said melt-blown nonwoven substrate is constituted of fibers having an average fiber diameter ranging from 1 to 30 μm is applied. On such melt-blown nonwoven substrate, ion-exchangeable or chelate group is introduced through graft polymerization of vinyl monomer. [wherein ethylene unit (X) and norbornene unit (Y) is chosen from 1 to 99 mole %] [wherein m and n represent degree of polymerization and are chosen from 1 or more.]
    • 用于液体净化的过滤介质,其可以去除在抛光或洗涤液体中所含的金属化合物或金属离子,例如用于半导体硅晶片的碱,酸溶液或超纯水。 从各种液体如无机化学品,有机溶剂或工业废水中去除金属也是本发明的主题。 由下述式[1]表示的亚乙基/降冰片烯共聚物和/或下述通式[2](a),(b),(c)所示的多环降冰片烯聚合物的熔喷非织造基材制成的过滤介质, 作为原料,其中所述乙烯/降冰片烯共聚物和所述多环降冰片烯聚合物的玻璃化转变温度(Tg)为80-180℃,熔体体积比(MVR)(ISO 1133,测量条件:260° C,2.16kg)为30cm 3/10分钟以上,其中,所述熔喷非织造基材由平均纤维直径为1〜30μm的纤维构成。 在这种熔喷非织造基材上,通过乙烯基单体的接枝聚合引入离子交换或螯合基团。 [其中乙烯单元(X)和降冰片烯单元(Y)选自1至99摩尔%] [其中m和n表示聚合度并且选自1个或更多个]。
    • 28. 发明申请
    • Process for emulsion graft polymerization and products thereof
    • 乳液接枝聚合方法及其制备方法
    • US20050272876A1
    • 2005-12-08
    • US11141039
    • 2005-06-01
    • Noriaki SekoMasao Tamada
    • Noriaki SekoMasao Tamada
    • B01J20/26B01J20/30B01J20/34C08F2/00C08F2/24C08F251/00C08F251/02C08F255/00C08F255/02
    • C08F2/24C08F251/00C08F251/02C08F255/00C08F255/02
    • A process for emulsion graft polymerization of a polymeric substrate, which comprises a step of activating a polymeric substrate, and a step of contacting the activated polymeric substrate with an emulsion comprising a surfactant, water, and reactive monomers, thereby graft polymerizing the reactive monomers to the polymeric substrate, and products polymerized by the process, where the surfactant is selected from the group consisting of an anionic surfactant, a cationic surfactant, an amphoric surfactant, a non-ionic surfactant and a mixture thereof, and the polymeric substrate is in the form of woven fabrics, non-woven fabrics, films, hollow filamentary films, flat films or threads, made from polyolefinic fibers such as polyethylene, polypropylene, etc., or natural polymeric fibers such as chitin, chitosan, cellulose, starch, etc.
    • 一种聚合物基材的乳液接枝聚合方法,其包括活化聚合物基材的步骤,以及使活化的聚合物基材与包含表面活性剂,水和反应性单体的乳液接触的步骤,从而将反应性单体接枝聚合 聚合物基质和通过该方法聚合的产物,其中表面活性剂选自阴离子表面活性剂,阳离子表面活性剂,氨基表面活性剂,非离子表面活性剂及其混合物,并且聚合物基质在 由诸如聚乙烯,聚丙烯等聚烯烃纤维制成的机织织物,无纺织物,薄膜,中空丝状薄膜,扁平薄膜或丝线的形式,或几丁质,壳聚糖,纤维素,淀粉等天然聚合物纤维。