GB1486917A – Process for the manufacture of a cellulose acetate membrane
– Google Patents
GB1486917A – Process for the manufacture of a cellulose acetate membrane
– Google Patents
Process for the manufacture of a cellulose acetate membrane
Info
Publication number
GB1486917A
GB1486917A
GB53322/74A
GB5332274A
GB1486917A
GB 1486917 A
GB1486917 A
GB 1486917A
GB 53322/74 A
GB53322/74 A
GB 53322/74A
GB 5332274 A
GB5332274 A
GB 5332274A
GB 1486917 A
GB1486917 A
GB 1486917A
Authority
GB
United Kingdom
Prior art keywords
cellulose acetate
manufacture
acetate membrane
dec
sheet
Prior art date
1973-12-10
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
GB53322/74A
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.)
Hoechst AG
Original Assignee
Hoechst AG
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.)
1973-12-10
Filing date
1974-12-10
Publication date
1977-09-28
1974-12-10
Application filed by Hoechst AG
filed
Critical
Hoechst AG
1977-09-28
Publication of GB1486917A
publication
Critical
patent/GB1486917A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
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
B01D67/0081—After-treatment of organic or inorganic membranes
B01D67/0095—Drying
C—CHEMISTRY; METALLURGY
C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
C08J7/02—Chemical treatment or coating of shaped articles made of macromolecular substances with solvents, e.g. swelling agents
C—CHEMISTRY; METALLURGY
C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
C08J2301/00—Characterised by the use of cellulose, modified cellulose or cellulose derivatives
C08J2301/08—Cellulose derivatives
C08J2301/10—Esters of organic acids
C08J2301/12—Cellulose acetate
Abstract
1486917 Cellulose membranes HOECHST AG 10 Dec 1974 [10 Dec 1973] 53322/74 Heading B5B A sheet of cellulose acetate is treated with an aqueous solution of a di- or polyhydric alcohol containing 2-4C for 2-10 minutes at 50-110 C. then drying the sheet at a temperature not exceeding 50 C. The aqueous solution preferably contains 20-35% alcohol, preferably glycerol.
GB53322/74A
1973-12-10
1974-12-10
Process for the manufacture of a cellulose acetate membrane
Expired
GB1486917A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
DE2361369A
DE2361369A1
(en)
1973-12-10
1973-12-10
PROCESS FOR MANUFACTURING A DESALINATING CELLULOSE ACETATE MEMBRANE
Publications (1)
Publication Number
Publication Date
GB1486917A
true
GB1486917A
(en)
1977-09-28
Family
ID=5900338
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB53322/74A
Expired
GB1486917A
(en)
1973-12-10
1974-12-10
Process for the manufacture of a cellulose acetate membrane
Country Status (7)
Country
Link
US
(1)
US3957935A
(en)
JP
(1)
JPS5094079A
(en)
DE
(1)
DE2361369A1
(en)
FR
(1)
FR2253781B3
(en)
GB
(1)
GB1486917A
(en)
IT
(1)
IT1024345B
(en)
NL
(1)
NL7415605A
(en)
Families Citing this family (14)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
JPS51145474A
(en)
*
1975-06-10
1976-12-14
Kuraray Co Ltd
A blood dialysis membrane with outstanding dialysis performance and a process for producing it
DE2704600B2
(en)
*
1977-02-04
1979-08-30
Hoechst Ag, 6000 Frankfurt
Permselective, asymmetric hemofiltration membrane with heteroporous structure based on polyamide
US4145295A
(en)
*
1977-08-15
1979-03-20
Canadian Patents And Development Limited
Cellulose ester ultra-filtration membranes and their manufacture
DE2816085B2
(en)
*
1978-04-13
1981-04-23
Sartorius GmbH, 3400 Göttingen
Asymmetrical ultrafiltration membrane based on cellulose hydrate
DE2935097A1
(en)
*
1978-09-07
1980-03-20
Kuraray Co
AETHYLENE / VINYL ALCOHOL COPOLYMER MEMBRANE
JPS56129005A
(en)
*
1980-03-12
1981-10-08
Daicel Chem Ind Ltd
Dry type porous membrane and its manufacture
JPS58156307A
(en)
*
1982-03-15
1983-09-17
Nitto Electric Ind Co Ltd
Preparation of dry semi-permeable membrane
JPS61500305A
(en)
*
1983-11-07
1986-02-27
メムテツク リミテツド
Separation of oil emulsions
JPS6097005A
(en)
*
1984-04-16
1985-05-30
Terumo Corp
Plasticization of hollow fiber for dialysis
US4744807A
(en)
*
1986-07-21
1988-05-17
Canadian Patents And Development Ltd.
Method of manufacturing a cellulose acetate membrane and the membrane so produced
JP2528169B2
(en)
*
1987-11-19
1996-08-28
帝人株式会社
Method for manufacturing porous molded article
US5011637A
(en)
*
1989-01-23
1991-04-30
The Dow Chemical Company
Preparing cellulose ester membranes for gas separation
US4980063A
(en)
*
1989-01-27
1990-12-25
The Dow Chemical Company
Compositions useful for preparing cellulose ester membranes for liquid separations
JPH09253463A
(en)
*
1996-03-22
1997-09-30
Nok Corp
Manufacture of polysulfone type ultrafiltration film
Family Cites Families (4)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US3567809A
(en)
*
1966-10-07
1971-03-02
Fuji Photo Film Co Ltd
Method of varying the pore diameters of fine pores in cellulose acetate film
US3593855A
(en)
*
1969-05-13
1971-07-20
Westinghouse Electric Corp
High flow porous reverse osmosis membranes containing lipids
US3592672A
(en)
*
1969-12-22
1971-07-13
Eastman Kodak Co
Dry stabilized,rewettable semipermeable cellulose ester and ether membranes and their preparation
US3772072A
(en)
*
1971-06-14
1973-11-13
Eastman Kodak Co
Method for treating reverse osmosis membranes
1973
1973-12-10
DE
DE2361369A
patent/DE2361369A1/en
not_active
Withdrawn
1974
1974-11-29
NL
NL7415605A
patent/NL7415605A/en
not_active
Application Discontinuation
1974-12-05
US
US05/529,839
patent/US3957935A/en
not_active
Expired – Lifetime
1974-12-06
IT
IT54392/74A
patent/IT1024345B/en
active
1974-12-09
FR
FR7440263A
patent/FR2253781B3/fr
not_active
Expired
1974-12-10
GB
GB53322/74A
patent/GB1486917A/en
not_active
Expired
1974-12-10
JP
JP49141951A
patent/JPS5094079A/ja
active
Pending
Also Published As
Publication number
Publication date
DE2361369A1
(en)
1975-06-19
FR2253781B3
(en)
1977-09-02
NL7415605A
(en)
1975-06-12
US3957935A
(en)
1976-05-18
FR2253781A1
(en)
1975-07-04
JPS5094079A
(en)
1975-07-26
IT1024345B
(en)
1978-06-20
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Legal Events
Date
Code
Title
Description
1978-02-08
PS
Patent sealed [section 19, patents act 1949]
1981-07-22
PCNP
Patent ceased through non-payment of renewal fee
