GB1556898A - Polycarbonate membranes foe use in hemodialysis - Google Patents

Polycarbonate membranes foe use in hemodialysis

Info

Publication number
GB1556898A
GB1556898A GB11299/77A GB1129977A GB1556898A GB 1556898 A GB1556898 A GB 1556898A GB 11299/77 A GB11299/77 A GB 11299/77A GB 1129977 A GB1129977 A GB 1129977A GB 1556898 A GB1556898 A GB 1556898A
Authority
GB
United Kingdom
Prior art keywords
polycarbonate
weight
molecules
hemodialysis
molecular weight
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
GB11299/77A
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.)
CR Bard Inc
Original Assignee
CR Bard Inc
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 CR Bard Inc filed Critical CR Bard Inc
Publication of GB1556898A publication Critical patent/GB1556898A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B01D67/0011—Casting solutions therefor
    • B01D67/00113—Pretreatment of the casting solutions, e.g. thermal treatment or ageing
    • 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
    • B01D71/50—Polycarbonates
    • 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
    • B01D67/0011—Casting solutions therefor
    • 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
    • B01D69/02—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor characterised by their properties

Abstract

The hydrophilic polycarbonate membrane is used for preferential removal of molecules of moderate molecular weight from the blood. The polycarbonate preferably comprises a polyether-polycarbonate block polymer containing 5-35% by weight of recurring alkylene ether carbonate units and 95-65% by weight of bisphenol A carbonate units. The membrane exhibits improved transport properties for molecules of moderate molecular weight and approximately the same ultrafiltration rate as cellulose membranes. Patients treated in dialysers using the polycarbonate membranes exhibited improved haemocritical and neurophatic functions.
GB11299/77A 1976-03-19 1977-03-17 Polycarbonate membranes foe use in hemodialysis Expired GB1556898A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US66855676A 1976-03-19 1976-03-19

Publications (1)

Publication Number Publication Date
GB1556898A true GB1556898A (en) 1979-11-28

Family

ID=24682802

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11299/77A Expired GB1556898A (en) 1976-03-19 1977-03-17 Polycarbonate membranes foe use in hemodialysis

Country Status (11)

Country Link
JP (1) JPS5812028B2 (en)
BE (1) BE852663A (en)
CA (1) CA1107467A (en)
CH (1) CH629515A5 (en)
DE (1) DE2711498A1 (en)
DK (1) DK96677A (en)
FR (1) FR2344315A1 (en)
GB (1) GB1556898A (en)
NL (1) NL7703001A (en)
NO (1) NO770946L (en)
SE (1) SE7703124L (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4563516A (en) * 1983-08-19 1986-01-07 Bayer Aktiengesellschaft Polyether-polycarbonates for dialysis membranes
WO2008157328A1 (en) * 2007-06-15 2008-12-24 Sabic Innovative Plastics Ip B.V. Polycarbonate-poly(alkylene oxide) copolymer compositions and articles formed therefrom
US7642315B2 (en) 2007-06-15 2010-01-05 Sabic Innovative Plastics Ip B.V. Polycarbonate-poly(alkylene oxide) copolymer compositions and articles formed therefrom
US7649073B2 (en) 2007-06-15 2010-01-19 Sabic Innovative Plastics Ip B.V. Polycarbonate-poly(alkylene oxide) copolymer compositions and articles formed therefrom

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4069151A (en) * 1976-03-31 1978-01-17 C. R. Bard, Inc. Thin polycarbonate membranes for use in hemodialysis
JPS5596162A (en) * 1979-01-18 1980-07-22 Asahi Medical Co Polycarbonate hollow fiber dialysis film and its preparation
SE423106B (en) * 1980-07-25 1982-04-13 Gambro Dialysatoren PLASMAFERES MEMBRANE AND WAY TO MANUFACTURE THIS
DE3069709D1 (en) * 1980-09-01 1985-01-10 Gambro Inc Dry polycarbonate membrane and process of manufacture
EP0046816A1 (en) * 1980-09-01 1982-03-10 Gambro, Inc. Polycarbonate hemofiltration membrane and method of hemofiltering using such a membrane
JPS62141360U (en) * 1986-02-28 1987-09-07
JPH0511720Y2 (en) * 1986-11-28 1993-03-24
DE60311240T2 (en) * 2003-07-03 2007-07-05 Fresenius Hemocare Italia S.R.L., Cavezzo Filter for removing substances from blood products
DE102013224874B4 (en) 2013-12-04 2022-08-25 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Process for the covalent coating of polymers with at least partially nucleophilic chain ends, surface-coated substrate and possible uses
CN108927019B (en) * 2017-05-24 2021-03-02 北京赛特超润界面科技有限公司 Preparation method of block copolymer membrane and functional porous membrane hybridized salt difference power generation membrane

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1500937A (en) * 1974-03-26 1978-02-15 Us Health Process for producing a polycarbonate hemodialysis membrane

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4563516A (en) * 1983-08-19 1986-01-07 Bayer Aktiengesellschaft Polyether-polycarbonates for dialysis membranes
WO2008157328A1 (en) * 2007-06-15 2008-12-24 Sabic Innovative Plastics Ip B.V. Polycarbonate-poly(alkylene oxide) copolymer compositions and articles formed therefrom
US7642315B2 (en) 2007-06-15 2010-01-05 Sabic Innovative Plastics Ip B.V. Polycarbonate-poly(alkylene oxide) copolymer compositions and articles formed therefrom
US7649073B2 (en) 2007-06-15 2010-01-19 Sabic Innovative Plastics Ip B.V. Polycarbonate-poly(alkylene oxide) copolymer compositions and articles formed therefrom

Also Published As

Publication number Publication date
BE852663A (en) 1977-07-18
DE2711498A1 (en) 1977-09-22
JPS5812028B2 (en) 1983-03-05
NO770946L (en) 1977-09-20
JPS52116692A (en) 1977-09-30
FR2344315A1 (en) 1977-10-14
DK96677A (en) 1977-09-20
SE7703124L (en) 1977-09-20
NL7703001A (en) 1977-09-21
CH629515A5 (en) 1982-04-30
CA1107467A (en) 1981-08-25
FR2344315B1 (en) 1982-07-02

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
429A Application made for amendment of specification (sect. 29/1949)
429H Application (made) for amendment of specification now open to opposition (sect. 29/1949)
429D Case decided by the comptroller ** specification amended (sect. 29/1949)
SP Amendment (slips) printed
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee