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公开(公告)号：US3642773A
公开(公告)日：1972-02-15
申请号：US3642773D
申请日：1967-12-29
Applicant: MC DONNELL DOUGLAS CORP
Inventor： LITTMAN FRED E
CPC classification number: B01D71/14 , B01D67/0011 , B01D71/82
Abstract: CELLULOSE ESTER, ESPECIALLY CELLULOSE ACETATE, SEMIPERMEABLE MEMBRANES HAVING SUPERIOR PERMEATION PROPERTIES OF FLUX AND SOLUTE REJECTION WHICH ARE PARTICULARLY SUITED FOR DESALINATION OF AQUEOUS SALT SOLUTIONS BY REVERSE OSMOSIS, PRODUCED BY A METHOD WHICH INCLUDES PRE-TREATMENT OF THE CELLULOSE ESTER MATERIAL IN THE FORM OF AN AQUEOUS SLURRY WITH CATALYTIC AMOUNTS OF A STRONG ACID PRIOR TO CASTING THE CELLULOSE ESTER MATERIAL INTO A FILM. METHOD FOR PRODUCING THE ABOVE DESCRIBED MEMBRANE, AND METHOD FOR DESALINATION OF SALT WATER EMPLOYING THE ABOVE DESCRIBED MEMBRANE.
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2.发明授权Modified cellulose ester semipermeable membrane and its method of manufacture 失效改性纤维素ESTER可切割膜及其制备方法
公开(公告)号：US3560232A
公开(公告)日：1971-02-02
申请号：US3560232D
申请日：1967-12-29
Applicant: MC DONNELL DOUGLAS CORP
Inventor： LITTMAN FRED E
CPC classification number: B01D71/14 , B01D67/0009 , B01D71/82
Abstract: CELLULOSE ESTER, ESPECIALLY CELLULOSE ACETATE, SEMIPERMEABLE MEMBRANES HAVING SUPERIOR PERMEATION PROPERTIES OF FLUX AND SOLUTE REJECTION WHICH ARE PARTICULARLY SUITED FOR DESALINATION OF AQUEOUS SALT SOLUTIONS BY REVERSE OSMOSIS PRODUCED BY A METHOD WHICH INCLUDES PRETREATMENT OF THE CELLULOSE ESTER MATERIAL IN THE FORM OF AN INERT SOLVENT SOLUTION WITH CATALYTIC AMOUNTS OF A CONCENTRATED STRONG ACID PRIOR TO CASTING THE CELLULOSE ESTER MATERIAL INTO A FILM. METHOD FOR PRODUCING THE ABOVE DESCRIBED MEMBRANE, AND METHOD FOR DESALINATION OF SALT WATER EMPLOYING THE ABOVE DESCRIBED MEMBRANE.
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公开(公告)号：US3498909A
公开(公告)日：1970-03-03
申请号：US3498909D
申请日：1966-12-29
Applicant: MC DONNELL DOUGLAS CORP
Inventor： LITTMAN FRED E
CPC classification number: B01D71/04 , B01D61/025 , B01D61/08 , B01D63/024 , Y02A20/131
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