GB2000722A - Cellulose acetate hollow fibers - Google Patents

Cellulose acetate hollow fibers

Info

Publication number
GB2000722A
GB2000722A GB7828704A GB7828704A GB2000722A GB 2000722 A GB2000722 A GB 2000722A GB 7828704 A GB7828704 A GB 7828704A GB 7828704 A GB7828704 A GB 7828704A GB 2000722 A GB2000722 A GB 2000722A
Authority
GB
United Kingdom
Prior art keywords
cellulose acetate
hollow fibers
glycerine
microns
polyethylene glycol
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.)
Granted
Application number
GB7828704A
Other versions
GB2000722B (en
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.)
Althin Medical Inc
Original Assignee
Cordis Dow Corp
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 Cordis Dow Corp filed Critical Cordis Dow Corp
Publication of GB2000722A publication Critical patent/GB2000722A/en
Application granted granted Critical
Publication of GB2000722B publication Critical patent/GB2000722B/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
    • B01D67/0023—Organic membrane manufacture by inducing porosity into non porous precursor membranes
    • B01D67/0025—Organic membrane manufacture by inducing porosity into non porous precursor membranes by mechanical treatment, e.g. pore-stretching
    • B01D67/0027—Organic membrane manufacture by inducing porosity into non porous precursor membranes by mechanical treatment, e.g. pore-stretching by stretching
    • 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
    • B01D67/0023—Organic membrane manufacture by inducing porosity into non porous precursor membranes
    • B01D67/003—Organic membrane manufacture by inducing porosity into non porous precursor membranes by selective elimination of components, e.g. by leaching
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/08—Hollow fibre membranes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/08—Hollow fibre membranes
    • B01D69/081—Hollow fibre membranes characterised by the fibre diameter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/08—Hollow fibre membranes
    • B01D69/087—Details relating to the spinning process
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/24—Formation of filaments, threads, or the like with a hollow structure; Spinnerette packs therefor
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F2/00—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof
    • D01F2/24—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from cellulose derivatives
    • D01F2/28—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from cellulose derivatives from organic cellulose esters or ethers, e.g. cellulose acetate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2325/00—Details relating to properties of membranes
    • B01D2325/20—Specific permeability or cut-off range

Abstract

The invention provides cellulose acetate hollow fibers suitable for use in artificial kidneys which provide superior water and solute clearances. The cellulose acetate hollow fibers of this invention may be made from a molten mixture of 41-50% cellulose acetate, 30-57% polyethylene glycol (MW150-600) and 2-20% glycerine, the resultant fibers being cold drawn by 2-20% and then leached to remove the polyethylene glycol and glycerine. The hollow fibers of the invention have an internal diameter of 100 to 350 microns, a wall thickness of 20 to 60 microns, and ultra-filtration coefficient of 2 to 6 millilitres per hour per square meter per millimeter of mercury and a urea coefficient of 0.015 to 0.045 centimeters per minute.
GB7828704A 1977-07-05 1978-07-04 Cellulose acetate hollow fibre and method for making same Expired GB2000722B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US81292977A 1977-07-05 1977-07-05

Publications (2)

Publication Number Publication Date
GB2000722A true GB2000722A (en) 1979-01-17
GB2000722B GB2000722B (en) 1982-01-27

Family

ID=25211003

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7828704A Expired GB2000722B (en) 1977-07-05 1978-07-04 Cellulose acetate hollow fibre and method for making same

Country Status (18)

Country Link
JP (2) JPS5442420A (en)
AT (1) AT364899B (en)
AU (1) AU519458B2 (en)
BE (1) BE868708A (en)
BR (1) BR7804325A (en)
CA (1) CA1107020A (en)
CH (1) CH632536A5 (en)
DD (1) DD137950A5 (en)
DE (1) DE2827100C2 (en)
DK (1) DK149600C (en)
FR (1) FR2396780A1 (en)
GB (1) GB2000722B (en)
IT (1) IT1107799B (en)
MX (1) MX153159A (en)
NL (1) NL7807225A (en)
NO (1) NO147979C (en)
NZ (1) NZ187610A (en)
SE (1) SE428221B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2473340A1 (en) * 1979-12-17 1981-07-17 Cordis Dow Corp SEMI-PERMEABLE HOLLOW CELLULOSIC FIBER, PROCESS FOR PRODUCING THE SAME AND APPLICATION THEREOF TO HEMODIALYSIS AND HEMOFILTRATION
EP0186293A2 (en) * 1984-11-16 1986-07-02 Teijin Limited Blood treatment device
US20150008185A1 (en) * 2012-02-24 2015-01-08 Toyobo Co., Ltd. Hollow fiber type semipermeable membrane, method for manufacturing the same, module, and water treatment method

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5949806A (en) * 1982-09-13 1984-03-22 Teijin Ltd Selectively permeable hollow fiber of cellulose ester and its production
JPS59199807A (en) * 1983-04-20 1984-11-13 Teijin Ltd Preparation of hollow yarn of cellulose ester having selective permeability
JPS59211459A (en) * 1983-05-17 1984-11-30 帝人株式会社 Pasturization of blood treating device
JPS605202A (en) * 1983-06-21 1985-01-11 Teijin Ltd Porous cellulose ester type hollow fiber and preparation thereof
JPS6343669A (en) * 1986-08-08 1988-02-24 帝人株式会社 Production of blood treatment device
WO2003000966A1 (en) 2001-06-26 2003-01-03 Toray Industries, Inc. Thermoplastic cellulose derivative composition and fiber comprising the same
KR102345457B1 (en) * 2014-09-30 2021-12-31 도레이 카부시키가이샤 Separation membrane
DE102020102096B4 (en) 2020-01-29 2023-03-23 Cerdia International GmbH CELLULOSE ACETATE FABRIC FOR A NONWOVEN PRODUCT, NONWOVEN PRODUCT CONTAINING SUCH FABRIC, AND METHOD OF MAKING SUCH FABRIC

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE336521A (en) * 1925-09-17
US3423491A (en) * 1964-09-02 1969-01-21 Dow Chemical Co Permselective hollow fibers and method of making
FR1456757A (en) * 1964-09-02 1966-07-08 Dow Chemical Co Selectively permeable hollow fibers and their manufacture
US3532527A (en) * 1966-11-04 1970-10-06 Dow Chemical Co Permeable separatory membranes
US3745202A (en) * 1971-03-17 1973-07-10 Us Interior Method of preparing an asymmetric membrane from a cellulose derivative
JPS5170316A (en) * 1974-12-16 1976-06-17 Teijin Ltd SERUROOSUASETEETOCHUKUSHINO SEIZOHOHO

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2473340A1 (en) * 1979-12-17 1981-07-17 Cordis Dow Corp SEMI-PERMEABLE HOLLOW CELLULOSIC FIBER, PROCESS FOR PRODUCING THE SAME AND APPLICATION THEREOF TO HEMODIALYSIS AND HEMOFILTRATION
EP0186293A2 (en) * 1984-11-16 1986-07-02 Teijin Limited Blood treatment device
EP0186293A3 (en) * 1984-11-16 1987-03-11 Teijin Limited Fluid separator, hollow fiber to be used for construction thereof and process for preparation of said hollow fibers
EP0321448A2 (en) * 1984-11-16 1989-06-21 Teijin Limited Process for preparation of hollow fibers
EP0321448A3 (en) * 1984-11-16 1989-08-16 Teijin Limited Process for preparation of hollow fibers
US5063009A (en) * 1984-11-16 1991-11-05 Teijin Limited Process for preparation of hollow fibers for fluid separator construction
US20150008185A1 (en) * 2012-02-24 2015-01-08 Toyobo Co., Ltd. Hollow fiber type semipermeable membrane, method for manufacturing the same, module, and water treatment method
US10252222B2 (en) * 2012-02-24 2019-04-09 Toyobo Co., Ltd. Hollow fiber type semipermeable membrane, method for manufacturing the same, module, and water treatment method

Also Published As

Publication number Publication date
DE2827100A1 (en) 1979-01-25
FR2396780B1 (en) 1983-02-25
DK302078A (en) 1979-01-06
SE7807516L (en) 1979-01-06
JPS62250215A (en) 1987-10-31
MX153159A (en) 1986-08-14
NO782320L (en) 1979-01-08
IT7850125A0 (en) 1978-06-30
DD137950A5 (en) 1979-10-03
DE2827100C2 (en) 1983-04-28
BE868708A (en) 1979-01-04
AU519458B2 (en) 1981-12-03
NL7807225A (en) 1979-01-09
NZ187610A (en) 1980-09-12
SE428221B (en) 1983-06-13
IT1107799B (en) 1985-11-25
DK149600C (en) 1987-02-09
JPS6317922B2 (en) 1988-04-15
FR2396780A1 (en) 1979-02-02
NO147979B (en) 1983-04-11
BR7804325A (en) 1979-04-17
AU3697178A (en) 1979-12-13
JPS5442420A (en) 1979-04-04
NO147979C (en) 1983-07-20
ATA477578A (en) 1981-04-15
CH632536A5 (en) 1982-10-15
CA1107020A (en) 1981-08-18
DK149600B (en) 1986-08-04
GB2000722B (en) 1982-01-27
AT364899B (en) 1981-11-25

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee