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특허 상세정보

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내보내기 페이스북 공유 카카오톡 공유

Process for preparing hydrophilic polyamide membrane filter media and product

특허상세정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B01D-031/00   
미국특허분류(USC) 210/490 ; 210/4932 ; 210/5002 ; 264/41
출원번호 US-0198569 (1980-10-20)
발명자 / 주소
  • Pall David B. (Roslyn Estates NY)
출원인 / 주소
  • Pall Corporation (Glen Cove NY 02)
인용정보 피인용 횟수 : 205  인용 특허 : 0
초록
▼

A process is provided for preparing skinless hydrophilic alcohol-insoluble polyamide membranes by preparing a solution in a polyamide solvent of an alcohol-insoluble polyamide resin having a ratio CH2:NHCO of methylene CH2 to amide NHCO groups within the range from about 5:1 to about 7:1 inducing nucleation of the solution by controlled addition to the solution of a nonsolvent for the polyamide resin, under controlled conditions of concentration, temperature, addition rate, and degree of agitation to obtain a visible precipitate of polyamide resin partic...

대표
청구항
▼

A multilayer hydrophilic skinless alcohol-insoluble polyamide resin membrane sheet of alcohol-insoluble hydrophobic polyamide resin having a ratio CH2:NHCO of methylene CH2 to amide NHCO groups within the range from about 5:1 to about 7:1, capable when completely immersed in water of being wetted through within no more than one second, and reverting when heated to a temperature just below the softening temperature of the membrane to a hydrophobic material which is no longer wetted by water, and having at least two membrane layers integrally adhered toget...

이 특허를 인용한 특허 (205)

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  176. Bujard, Patrice; Xiong, Rong, Process of using microwave deposition of metal oxide onto an organic substrate.
  177. Repetti Ronald V. (Guilford CT) Troy Stephen (Stamford CT), Production of hollow nylon fibers.
  178. Zha, Fufang; Cao, Zhiyi, Reduction of backwash liquid waste.
  179. Meyering Mark T ; Vining ; Jr. Jack H. ; Badenhop C. Thomas, Reinforced, three zone microporous membrane.
  180. Meyering, Mark T; Vining, Jr., Jack H.; Badenhop, C. Thomas, Reinforced, three zone microporous membrane.
  181. Sundet, Sherman A., Reverse osmosis membrane quenching.
  182. Zha, Fufang; Kopp, Clinton V.; McMahon, Robert J.; Johnson, Warren T.; Beck, Thomas W., Scouring method.
  183. Emheiser William C. (Chelsea MI) Corbett Robert (Manchester MI), Self-priming intravenous filter.
  184. Simonetti, John A.; Vinarov, Irina, Semipermeable hydrophilic membrane.
  185. Muller, Joachim, Simple gas scouring method and apparatus.
  186. McMahon, Robert James; Cox, David John; Zha, Fufang; Phelps, Roger William; Johnson, Warren Thomas; Barkho, Sargon, Square membrane manifold system.
  187. Zha, Fufang; Ganzi, Gary C.; Beck, Thomas W., Submerged cross-flow filtration.
  188. Lennon Donald J. (Hopedale MA) Foster Paul B. (Quincy MA), Swab expressor immunoassay device.
  189. Kelly,Wayne; Grant,Donald; Goddard,Philip; Thom,Volkmar, System and method for liquid filtration based on a neutral filter material.
  190. Mark T. Meyering ; William R. Kelly ; Jack H. Vining ; C. Thomas Baddenhop ; Joseph G. Wallace, System for manufacturing reinforced three-zone microporous membrane.
  191. Kuzma, Matthew J., System for treating wastewater.
  192. Sun, Chong-Son; Chapman, John; Bischof, Daniel F; Herman, Robert E, Systems and methods for removing free and entrained contaminants in plasma.
  193. Herman Robert E. ; Chapman John ; Sun Chong-Son ; Mathias Jean M,BEX ; Mayaudon Veronique,FRX ; de Gheldere Serge,BEX ; Bischof Daniel F., Systems and methods for removing viral agents from blood.
  194. Herman, Robert E.; Chapman, John; Sun, Chong-Son; Mathias, Jean M.; Mayaudon, Veronique; de Gheldere, Serge; Bischof, Daniel F., Systems and methods for removing viral agents from blood.
  195. Herman,Robert E.; Chapman,John; Sun,Chong Son; Mathias,Jean M; Bischof,Daniel F., Systems and methods for removing viral agents from blood.
  196. Schucker Robert C. (10532 Mollylea Dr. Baton Rouge LA 70815), Thin film composite membrane prepared by deposition from a solution.
  197. Schucker Robert C. (Baton Rouge LA), Thin film composite membrane prepared by deposition from a solution.
  198. Schucker Robert C. (Baton rouge LA), Thin film composite membrane prepared by suspension deposition.
  199. Sale, Richard; Ostreicher, Eugene, Unsupported multizone microporous membrane.
  200. Jordan, Edward J.; Liu, Wenjun, Wastewater treatment system.
  201. Elefritz,Robert A.; Liu,Wenjun, Wastewater treatment system and method.
  202. Bahm, Jeannine Rebecca; Pearks, Andrew Thomas; Vidal, Guillermo Matias; Collias, Dimitris Ioannis; Mitchell, Michael Donovan; Astle, Robert E.; Faye, Katharine L. K.; Governal, Robert Andrew; Hamlin, Thomas J.; Lucht, Rebecca A.; Patel, Hemang, Water filter materials and water filters containing a mixture of microporous and mesoporous carbon particles.
  203. Bahm, Jeannine Rebecca; Pearks, Andrew Thomas; Vidal, Guillermo Matias; Collias, Dimitris Ioannis; Mitchell, Michael Donovan; Astle, Robert E.; Faye, Katharine L. K.; Governal, Robert Andrew; Hamlin, Thomas J.; Lucht, Rebecca A.; Patel, Hemang, Water filter materials and water filters containing a mixture of microporous and mesoporous carbon particles.
  204. Tanner, John D.; Emmons, David James; Riedel, Richard P.; Mitchell, Michael Donovan; Collias, Dimitris Ioannis, Water treating methods.
  205. Zha, Fufang; James, Gerin; Zuback, Joseph Edward; Zauner, Peter; Phelps, Roger William, Water treatment membrane cleaning with pulsed airlift pump.

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