CA994973A - Simplified process for manufacturing cellulose acetate reverse osmosis membranes - Google Patents

Simplified process for manufacturing cellulose acetate reverse osmosis membranes

Info

Publication number
CA994973A
CA994973A CA157,931A CA157931A CA994973A CA 994973 A CA994973 A CA 994973A CA 157931 A CA157931 A CA 157931A CA 994973 A CA994973 A CA 994973A
Authority
CA
Canada
Prior art keywords
cellulose acetate
reverse osmosis
simplified process
osmosis membranes
manufacturing cellulose
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA157,931A
Other languages
English (en)
Other versions
CA157931S (en
Inventor
Barry M. Brown
Elbert L. Ray
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Eastman Kodak Co
Original Assignee
Eastman Kodak Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Eastman Kodak Co filed Critical Eastman Kodak Co
Application granted granted Critical
Publication of CA994973A publication Critical patent/CA994973A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06—Organic material
    • B01D71/08—Polysaccharides
    • B01D71/12—Cellulose derivatives
    • B01D71/14—Esters of organic acids
    • B01D71/16—Cellulose acetate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
    • B01D67/0002—Organic membrane manufacture
    • B01D67/0009—Organic membrane manufacture by phase separation, sol-gel transition, evaporation or solvent quenching
    • B01D67/0016—Coagulation
    • B01D67/00165—Composition of the coagulation baths
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/911—Cooling
    • B29C48/9135—Cooling of flat articles, e.g. using specially adapted supporting means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/919—Thermal treatment of the stream of extruded material, e.g. cooling using a bath, e.g. extruding into an open bath to coagulate or cool the material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
    • B01D61/025—Reverse osmosis; Hyperfiltration
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00—Water conservation; Efficient water supply; Efficient water use
    • Y02A20/124—Water desalination
    • Y02A20/131—Reverse-osmosis

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
CA157,931A 1972-01-06 1972-12-04 Simplified process for manufacturing cellulose acetate reverse osmosis membranes Expired CA994973A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00215811A US3824299A (en) 1972-01-06 1972-01-06 Simplified process for manufacturing cellulose acetate reverse osmosis membranes

Publications (1)

Publication Number Publication Date
CA994973A true CA994973A (en) 1976-08-17

Family

ID=22804499

Family Applications (1)

Application Number Title Priority Date Filing Date
CA157,931A Expired CA994973A (en) 1972-01-06 1972-12-04 Simplified process for manufacturing cellulose acetate reverse osmosis membranes

Country Status (7)

Country Link
US (1) US3824299A (US06534493-20030318-C00166.png)
JP (1) JPS5615929B2 (US06534493-20030318-C00166.png)
CA (1) CA994973A (US06534493-20030318-C00166.png)
DE (1) DE2300498C3 (US06534493-20030318-C00166.png)
FR (1) FR2166352B1 (US06534493-20030318-C00166.png)
GB (1) GB1420123A (US06534493-20030318-C00166.png)
IL (1) IL41165A (US06534493-20030318-C00166.png)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4920969A (en) * 1985-10-08 1990-05-01 Capintec, Inc. Ambulatory physiological evaluation system including cardiac monitoring
US4990248A (en) * 1987-06-03 1991-02-05 Eastman Kodak Company Reverse osmosis apparatus
AU774630B2 (en) * 1999-07-16 2004-07-01 Taylors Engineering (Blenheim) Limited Apparatus for emptying receptacle
JP5638002B2 (ja) * 2009-01-06 2014-12-10 ダウ グローバル テクノロジーズ エルエルシー エポキシ樹脂及び前進プロセスのための金属安定剤
CN116617865A (zh) * 2023-07-04 2023-08-22 江苏科闻环保科技有限公司 一种大通量抗氧化反渗透膜制备方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE357267A (US06534493-20030318-C00166.png) *
US3666508A (en) * 1968-05-22 1972-05-30 Univ California High flux semipermeable cellulosic derivative membranes with dry handling capabilities and their method of preparation

Also Published As

Publication number Publication date
DE2300498C3 (de) 1982-04-01
IL41165A (en) 1975-08-31
DE2300498B2 (de) 1981-04-23
JPS4874480A (US06534493-20030318-C00166.png) 1973-10-06
US3824299A (en) 1974-07-16
IL41165A0 (en) 1973-02-28
GB1420123A (en) 1976-01-07
JPS5615929B2 (US06534493-20030318-C00166.png) 1981-04-13
FR2166352B1 (US06534493-20030318-C00166.png) 1976-08-20
FR2166352A1 (US06534493-20030318-C00166.png) 1973-08-17
DE2300498A1 (de) 1973-07-12

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