GB2002679A - Hollow semipermeable cellulosic fibres - Google Patents

Hollow semipermeable cellulosic fibres

Info

Publication number
GB2002679A
GB2002679A GB7827618A GB7827618A GB2002679A GB 2002679 A GB2002679 A GB 2002679A GB 7827618 A GB7827618 A GB 7827618A GB 7827618 A GB7827618 A GB 7827618A GB 2002679 A GB2002679 A GB 2002679A
Authority
GB
United Kingdom
Prior art keywords
cirf
cellulose ester
solvent
solution
mmhg
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
GB7827618A
Other versions
GB2002679B (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.)
Asahi Kasei Corp
Asahi Chemical Industry Co Ltd
Original Assignee
Asahi Chemical Industry Co Ltd
Asahi Kasei Kogyo KK
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 Asahi Chemical Industry Co Ltd, Asahi Kasei Kogyo KK filed Critical Asahi Chemical Industry Co Ltd
Publication of GB2002679A publication Critical patent/GB2002679A/en
Application granted granted Critical
Publication of GB2002679B publication Critical patent/GB2002679B/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • 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

Abstract

Cellulosic hollow fibers for membrane filtration characterised by a water permeation rate of 2 to 10 l/m2 &cirf& hr &cirf& mmHg and a membrane filtration rate for a gamma -globulin solution of 0.5 to 10 l/m &cirf& hr &cirf& mmHg have active sites (ie points of minimum porosity) situated at the outer and/or inner surface and are prepared by a process comprising (1) spinning through a ring nozzle at a temperature of 25-45 DEG C a solution comprising (a) a cellulose ester, (b) 60-80% of a solvent therefor (based on the combined weight of cellulose ester and solvent), (c) 50-100% of a soluble metal compound (based on the combined weight of cellulose ester and metal compound) as pore former and (d) 80-250% of an auxiliary solvent (based on the weight of the cellulose ester solvent) whilst (2) simultaneously spinning a coagulant for the solution from the centre of the ring nozzle, (3) passing the spun product across a space into a coagulant bath at 0 to 25 DEG C and (4) intracting the pore former.
GB7827618A 1977-06-29 1978-06-22 Cellulosic hollow fibres Expired GB2002679B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7657977A JPS5411322A (en) 1977-06-29 1977-06-29 Hollow cellulose fibers and their production

Publications (2)

Publication Number Publication Date
GB2002679A true GB2002679A (en) 1979-02-28
GB2002679B GB2002679B (en) 1982-02-03

Family

ID=13609169

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7827618A Expired GB2002679B (en) 1977-06-29 1978-06-22 Cellulosic hollow fibres

Country Status (4)

Country Link
JP (1) JPS5411322A (en)
DE (1) DE2828616B2 (en)
FR (1) FR2396106A1 (en)
GB (1) GB2002679B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2192149A (en) * 1986-06-10 1988-01-06 Toyo Boseki Hollow cellulose ester fibre and its use for plasma separation
US4830796A (en) * 1986-06-20 1989-05-16 Eniricerche S.P.A. Process for preparing a polyester-amide hollow fiber membrane

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5562214A (en) * 1978-11-02 1980-05-10 Toyobo Co Ltd Production of hollow fiber membrane
DE3006880C2 (en) * 1980-02-23 1986-10-09 Akzo Gmbh, 5600 Wuppertal Plasmaphoresis membrane
JPS59204912A (en) * 1983-05-02 1984-11-20 Asahi Chem Ind Co Ltd Preparation of hollow yarn of regenerated cellulose
JPS60806A (en) * 1983-06-17 1985-01-05 Teijin Ltd Manufacture of plasma albumin permeable hollow yarn membrane

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2236226B2 (en) * 1972-07-24 1974-07-04 Forschungsinstitut Berghof Gmbh, 7400 Tuebingen Process for the production of semi-permeable asymmetrical capillary membranes
JPS5193786A (en) * 1975-02-15 1976-08-17 Makurokagatano chukuseni

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2192149A (en) * 1986-06-10 1988-01-06 Toyo Boseki Hollow cellulose ester fibre and its use for plasma separation
GB2192149B (en) * 1986-06-10 1989-12-13 Toyo Boseki Hollow cellulose ester fibre and its use for plasma separation
US4830796A (en) * 1986-06-20 1989-05-16 Eniricerche S.P.A. Process for preparing a polyester-amide hollow fiber membrane

Also Published As

Publication number Publication date
FR2396106B1 (en) 1981-07-03
JPS5411322A (en) 1979-01-27
DE2828616B2 (en) 1980-11-06
FR2396106A1 (en) 1979-01-26
GB2002679B (en) 1982-02-03
DE2828616A1 (en) 1979-01-04

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Legal Events

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