[go: up one dir, main page]
More Web Proxy on the site http://driver.im/

IT1107799B - IMPROVEMENT IN CELLULOSE ACETATE FIBER QUARRIES FOR ARTIFICIAL KIDNEYS AND PROCEDURE FOR THEIR PRODUCTION - Google Patents

IMPROVEMENT IN CELLULOSE ACETATE FIBER QUARRIES FOR ARTIFICIAL KIDNEYS AND PROCEDURE FOR THEIR PRODUCTION

Info

Publication number
IT1107799B
IT1107799B IT50125/78A IT5012578A IT1107799B IT 1107799 B IT1107799 B IT 1107799B IT 50125/78 A IT50125/78 A IT 50125/78A IT 5012578 A IT5012578 A IT 5012578A IT 1107799 B IT1107799 B IT 1107799B
Authority
IT
Italy
Prior art keywords
cellulose acetate
hollow fibers
quarries
artificial kidneys
improvement
Prior art date
Application number
IT50125/78A
Other languages
Italian (it)
Other versions
IT7850125A0 (en
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 IT7850125A0 publication Critical patent/IT7850125A0/en
Application granted granted Critical
Publication of IT1107799B publication Critical patent/IT1107799B/en

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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Artificial Filaments (AREA)
  • External Artificial Organs (AREA)

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.
IT50125/78A 1977-07-05 1978-06-30 IMPROVEMENT IN CELLULOSE ACETATE FIBER QUARRIES FOR ARTIFICIAL KIDNEYS AND PROCEDURE FOR THEIR PRODUCTION IT1107799B (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
IT7850125A0 IT7850125A0 (en) 1978-06-30
IT1107799B true IT1107799B (en) 1985-11-25

Family

ID=25211003

Family Applications (1)

Application Number Title Priority Date Filing Date
IT50125/78A IT1107799B (en) 1977-07-05 1978-06-30 IMPROVEMENT IN CELLULOSE ACETATE FIBER QUARRIES FOR ARTIFICIAL KIDNEYS AND PROCEDURE FOR THEIR PRODUCTION

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)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1153171A (en) * 1979-12-17 1983-09-06 David T. Chen Cellulose semipermeable hollow fibers and method for making same
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
CA1272139C (en) * 1984-11-16 1990-07-31 Fluid separator, hollow fiber to be used for construction thereof and process for preparation of said hollow fibers
JPS6343669A (en) * 1986-08-08 1988-02-24 帝人株式会社 Production of blood treatment device
CN100381622C (en) 2001-06-26 2008-04-16 东丽株式会社 Thermoplastic cellulose derivative composition and fiber comprising the same
WO2013125681A1 (en) * 2012-02-24 2013-08-29 東洋紡株式会社 Hollow fiber type semipermeable membrane, process for manufacturing same, module and water treatment process
EP3202486A4 (en) * 2014-09-30 2018-05-23 Toray Industries, Inc. 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
CN116367719A (en) * 2020-10-30 2023-06-30 东洋纺株式会社 Hollow fiber membrane for cell cryopreservation

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE336521A (en) * 1925-09-17
FR1456757A (en) * 1964-09-02 1966-07-08 Dow Chemical Co Selectively permeable hollow fibers and their manufacture
US3423491A (en) * 1964-09-02 1969-01-21 Dow Chemical Co Permselective hollow fibers and method of making
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

Also Published As

Publication number Publication date
ATA477578A (en) 1981-04-15
BE868708A (en) 1979-01-04
FR2396780A1 (en) 1979-02-02
AU3697178A (en) 1979-12-13
NO147979C (en) 1983-07-20
AU519458B2 (en) 1981-12-03
GB2000722B (en) 1982-01-27
DK149600C (en) 1987-02-09
CH632536A5 (en) 1982-10-15
FR2396780B1 (en) 1983-02-25
SE428221B (en) 1983-06-13
DD137950A5 (en) 1979-10-03
BR7804325A (en) 1979-04-17
IT7850125A0 (en) 1978-06-30
NZ187610A (en) 1980-09-12
GB2000722A (en) 1979-01-17
DK149600B (en) 1986-08-04
DE2827100C2 (en) 1983-04-28
NO782320L (en) 1979-01-08
NO147979B (en) 1983-04-11
DE2827100A1 (en) 1979-01-25
MX153159A (en) 1986-08-14
SE7807516L (en) 1979-01-06
AT364899B (en) 1981-11-25
JPS5442420A (en) 1979-04-04
NL7807225A (en) 1979-01-09
CA1107020A (en) 1981-08-18
DK302078A (en) 1979-01-06
JPS62250215A (en) 1987-10-31
JPS6317922B2 (en) 1988-04-15

Similar Documents

Publication Publication Date Title
IT1107799B (en) IMPROVEMENT IN CELLULOSE ACETATE FIBER QUARRIES FOR ARTIFICIAL KIDNEYS AND PROCEDURE FOR THEIR PRODUCTION
IT7927477A0 (en) METHOD OF MANUFACTURING FIBER OPTIC PREFORMS.
IT8020745A0 (en) METHOD AND APPARATUS FOR THE MANUFACTURE OF OPTICAL FIBERS AND OPTICAL FIBERS MANUFACTURED WITH THE AID OF THIS METHOD.
IT7919147A0 (en) PERMEABLE FIBER FILTER AND ITS PRODUCTION.
DK150161C (en) PROCEDURE FOR MANUFACTURING FORMED PRODUCTS FROM CELLULOSE-BASED FIBERS
IT1079901B (en) PROCEDURE FOR THE PRODUCTION OF POLYCRYSTALLINE OXIDE FIBERS
CH502279A (en) Process for obtaining fibers from thermoplastic materials, such as in particular glass fibers
IT7951121A0 (en) PROCEDURE FOR PRODUCING SIDE-SIDE COMPOSITE FIBERS IN POLYPROPYLENEPOLYETHYLENE WITHOUT WRIPPING
BR8005449A (en) PROCESS AND APPLIANCE FOR THE PRODUCTION OF FIBER OPTIC FORM
IT1146243B (en) PERFECTION IN SEMI-PERMISSIBLE CELLULOSE QUARRY FIBERS FOR OSMOSIS ULTRAFILTRATION DIALYSIS OR SIMILAR OTHER OPERATIONS
IT7919040A0 (en) METHOD FOR THE PRODUCTION OF OPTIC FIBERS FOR TELECOMMUNICATIONS.
DK143716C (en) PROCEDURE FOR MAKING FIBERS OF POLYALKENIC MATERIALS DISPERSIBLE IN WATER
NL7712034A (en) GLASS COMPOSITION FOR LUMINOUS FIBERS AND METHOD FOR PREPARING THIS AS WELL AS LUMINOUS FIBER AND METHOD FOR MANUFACTURING THIS.
IT7950414A0 (en) IMPROVEMENT IN CELLULOSE DIALYSIS MEMBRANES AND PRODUCTION PROCEDURE
IT1105065B (en) IMPROVEMENT IN THE PRODUCTION PROCEDURES OF 2- (4-CHLORO-FENYL) -ALPHA-METHY-5-BENZONAZOLYLACETIC ACID
IT7922472A0 (en) IMPROVEMENT IN THE ROTORS OF LIBERATE FIBER SPINNING DEVICES.
JPS5313932A (en) Manufacture of optical fiber material
IT7922299A0 (en) IMPROVEMENTS IN THE DRAFTING GROUP OF CONTINUOUS SPINNING MACHINES FOR NATURAL OR ARTIFICIAL FIBERS.
FR2349622A1 (en) AQUEOUS COMPOSITION OF GLASS FIBER SIZING
IT1097357B (en) PROCEDURE FOR THE PREPARATION OF SOLUBLE DYES IN THE SPINNING SOLVENTS OF POLYMERS USED IN THE PRODUCTION OF FIBERS AND DYES OBTAINED
IT7950417A0 (en) IMPROVEMENT IN DIALYSIS MEMBRANES IN THE FORM OF HOLLOW THREAD IN REGENERATED CELLULOSE
ATE1430T1 (en) MELT SPINNING PROCESS FOR THE MANUFACTURE OF POLYACRYLNITRILE FIBERS.
JPS53139544A (en) Precoating method of optical fibers
BR7606069A (en) PROCESS FOR THE PRODUCTION OF FIBER OPTICS, AND THE RELATED FIBER OPTIC COAT
JPS5214969A (en) Method of producing membrane of hollow fiber excellent in penetrabilit y

Legal Events

Date Code Title Description
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19970506