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公开(公告)号：US10322381B2
公开(公告)日：2019-06-18
申请号：US15328115
申请日：2015-07-21
Applicant: Arkema Inc.
Inventor： Walter P. Kosar , Roderick Reber, III , Gregory S. O'Brien , Scott R. Gaboury , Roice A. Wille
IPC: B01D71/34 , B01D71/38 , B01D71/36 , B29C48/05 , D01F1/08 , D01F6/12 , B29C48/02 , B29C48/10 , B29C48/00 , B01D69/02 , B01D69/08 , B01D71/76 , D01D5/247 , B01D71/32 , B29K27/00 , B29L23/00 , B29L31/00
Abstract: Hollow fiber membranes having improved toughness and durability are prepared using a vinylidene fluoride polymer-containing component, such as Kynaro resins, having relatively low crystallinity. One aspect of the invention provides a membrane in the form of a fiber, wherein i) the fiber has a porous wall of a polymeric component enclosing a central hollow space extending the length of the fiber, ii) the polymeric component has a crystallinity as determined by wide angle x-ray diffraction of less than about 35%, iii) the polymeric component is comprised of at least one homopolymer or copolymer of vinylidene fluoride and iv) the membrane has an energy to break of at least about 0.5 J per square mm of membrane cross section.
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Patent Agency Ranking
公开(公告)号：US10434478B2
公开(公告)日：2019-10-08
申请号：US15837160
申请日：2017-12-11
Applicant: Arkema Inc.
Inventor： Sean M. Stabler , Thomas F. Roland , David A. Seiler , Ramin Amin-Sanayei , Walter P. Kosar
IPC: B01D69/12 , C02F1/44 , B01J20/20 , C02F1/28 , B01J20/28 , B01D67/00 , B01D69/14 , B01D71/02 , B01D71/34 , C02F1/00
Abstract: The invention relates to a porous separation article having a fluoropolymer, polyamide, PEEK, or PEKK binder interconnecting one or more types of interactive powdery materials or fibers. The interconnectivity is such that the binder connects the powdery materials or fibers in discrete spots rather than as a complete coating, allowing the materials or fibers to be in direct contact with, and interact with a fluid. The resulting article is a formed multicomponent, interconnected web, with porosity. The separation article is useful in water purification, as well as in the separation of dissolved or suspended materials in both aqueous and non-aqueous systems in industrial uses. The separation article can function at ambient temperature, as well as at elevated temperatures.
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公开(公告)号：US20180099250A1
公开(公告)日：2018-04-12
申请号：US15837160
申请日：2017-12-11
Applicant: Arkema Inc.
Inventor： Sean M. Stabler , Thomas F. Roland , David A. Seiler , Ramin Amin-Sanayei , Walter P. Kosar
CPC classification number: B01D69/12 , B01D67/0004 , B01D67/0041 , B01D67/0079 , B01D69/148 , B01D71/021 , B01D71/34 , B01D2323/06 , B01J20/20 , B01J20/2803 , C02F1/001 , C02F1/283 , C02F1/288 , C02F1/44
Abstract: The invention relates to a porous separation article having a fluoropolymer, polyamide, PEEK, or PEKK binder interconnecting one or more types of interactive powdery materials or fibers. The interconnectivity is such that the binder connects the powdery materials or fibers in discrete spots rather than as a complete coating, allowing the materials or fibers to be in direct contact with, and interact with a fluid. The resulting article is a formed multicomponent, interconnected web, with porosity. The separation article is useful in water purification, as well as in the separation of dissolved or suspended materials in both aqueous and non-aqueous systems in industrial uses. The separation article can function at ambient temperature, as well as at elevated temperatures.
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公开(公告)号：US11065587B2
公开(公告)日：2021-07-20
申请号：US14770125
申请日：2014-02-27
Applicant: Arkema Inc.
Inventor： Walter P. Kosar , Lotfi Hedhli , Roderick Reber, III
Abstract: The invention relates to membranes formed from long chain branched fluoropolymers, and especially long chain branched homopolymers and copolymers of polyvinylidene fluoride such as KYNAR resins. The novel membranes retain all the advantages of a fluoropolymer membrane (excellent chemical resistance especially to strong acids and oxidizing agents, and good mechanical strength), and additionally offer improved permeability, improved strain hardening, and even better resistance to caustic attacks. The improvements are believed to be related to an improvement to the microstructure of the membranes, producing a more open structure due to the long chain branched fluoropolymers. Further improvements in the mechanical properties of the membranes can be induced by strain hardening.
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公开(公告)号：US20170216780A1
公开(公告)日：2017-08-03
申请号：US15328115
申请日：2015-07-21
Applicant: Arkema Inc.
Inventor： Walter P. Kosar , Roderick Reber , Gregory S. O'BRIEN , Scott R. GABOURY , Roice A. WILLE
CPC classification number: B01D71/38 , B01D69/02 , B01D69/08 , B01D71/32 , B01D71/34 , B01D71/36 , B01D71/76 , B01D2323/12 , B01D2323/18 , B01D2325/24 , B29C47/0004 , B29C47/0014 , B29C47/0026 , B29K2027/16 , B29L2023/00 , B29L2031/755 , D01D5/247 , D01F1/08 , D01F6/12
Abstract: Hollow fiber membranes having improved toughness and durability are prepared using a vinylidene fluoride polymer-containing component, such as Kynaro resins, having relatively low crystallinity. One aspect of the invention provides a membrane in the form of a fiber, wherein i) the fiber has a porous wall of a polymeric component enclosing a central hollow space extending the length of the fiber, ii) the polymeric component has a crystallinity as determined by wide angle x-ray diffraction of less than about 35%, iii) the polymeric component is comprised of at least one homopolymer or copolymer of vinylidene fluoride and iv) the membrane has an energy to break of at least about 0.5 J per square mm of membrane cross section.
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公开(公告)号：US20160008772A1
公开(公告)日：2016-01-14
申请号：US14770125
申请日：2014-02-27
Applicant: ARKEMA INC.
Inventor： Walter P. Kosar , Lotfi HEDHLI , Roderick REBER
CPC classification number: B01D71/34 , B01D67/0016 , B01D69/02 , B01D69/06 , B01D69/08 , B01D2325/04 , B01D2325/24 , B01D2325/30 , C08L2205/025 , C08L27/16
Abstract: The invention relates to membranes formed from long chain branched fluoropolymers, and especially long chain branched homopolymers and copolymers of polyvinylidene fluoride such as KYNAR resins. The novel membranes retain all the advantages of a fluoropolymer membrane (excellent chemical resistance especially to strong acids and oxidizing agents, and good mechanical strength), and additionally offer improved permeability, improved strain hardening, and even better resistance to caustic attacks. The improvements are believed to be related to an improvement to the microstructure of the membranes, producing a more open structure due to the long chain branched fluoropolymers. Further improvements in the mechanical properties of the membranes can be induced by strain hardening.
Abstract translation: 本发明涉及由长支链含氟聚合物形成的膜，特别是聚偏二氟乙烯如KYNAR树脂的长链支化均聚物和共聚物。 新型膜保留了氟聚合物膜的所有优点（特别是对强酸和氧化剂具有优异的耐化学腐蚀性和良好的机械强度），并且还提供改善的渗透性，改善的应变硬化，甚至更好的耐苛性攻击性。 认为这些改进与膜的微观结构的改进有关，由于长链支化的含氟聚合物而产生更开放的结构。 可以通过应变硬化来诱导膜的机械性能的进一步改善。
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