GB1349394A – Preswelled cellulose films and process therefor
– Google Patents
GB1349394A – Preswelled cellulose films and process therefor
– Google Patents
Preswelled cellulose films and process therefor
Info
Publication number
GB1349394A
GB1349394A
GB3922471A
GB3922471A
GB1349394A
GB 1349394 A
GB1349394 A
GB 1349394A
GB 3922471 A
GB3922471 A
GB 3922471A
GB 3922471 A
GB3922471 A
GB 3922471A
GB 1349394 A
GB1349394 A
GB 1349394A
Authority
GB
United Kingdom
Prior art keywords
membrane
water
glycerin
preswelled
film
Prior art date
1970-09-18
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
GB3922471A
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.)
General Electric Co
Original Assignee
General Electric Co
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.)
1970-09-18
Filing date
1971-08-20
Publication date
1974-04-03
1971-08-20
Application filed by General Electric Co
filed
Critical
General Electric Co
1974-04-03
Publication of GB1349394A
publication
Critical
patent/GB1349394A/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
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
B01D71/10—Cellulose; Modified cellulose
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
C08J2301/02—Cellulose; Modified cellulose
Abstract
1349394 Regenerated cellulose membrane; dialyser GENERAL ELECTRIC CO 20 Aug 1971 [18 Sept 1970] 39224/71 Heading B1X [Also in Division B5] A dialysis apparatus comprises a preswelled membrane 16 secured by an adhesive, e.g. isopropyl 2-cyanoacrylate to one side of a polyvinyl chloride frame 12. Optionally a second frame 14 can be attached to the other side of membrane 16, forming a sandwich. The membrane is made of regenerated cellulose, preferably cupramonium cellulose, preswollen with glycerin, and may be mounted on the frame before or after the swelling treatment. The glycerin is replaced by water as soon as the membrane is put to use. The membrane may be made by preswelling a dry film with water, the water then being replaced by glycerin; alternatively a ‘neverdried’ film, washed with water, may be so treated. Such films may be stored and mounted for use as dialysis membranes without any further swelling treatment, or such film may be mounted prior to storage. Fig. 3 shows a membrane mounted in a dialysis blockin an instrument adapted to analyse molecules, e.g. sugars, dialyzed from a fluid, e.g. blood, circulated on one side of the membrane into an analysis fluid circulated on the other side of the membrane.
GB3922471A
1970-09-18
1971-08-20
Preswelled cellulose films and process therefor
Expired
GB1349394A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
US7338670A
1970-09-18
1970-09-18
Publications (1)
Publication Number
Publication Date
GB1349394A
true
GB1349394A
(en)
1974-04-03
Family
ID=22113397
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB3922471A
Expired
GB1349394A
(en)
1970-09-18
1971-08-20
Preswelled cellulose films and process therefor
Country Status (2)
Country
Link
DE
(1)
DE2144028A1
(en)
GB
(1)
GB1349394A
(en)
Cited By (3)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US4368112A
(en)
1978-12-28
1983-01-11
Exxon Research And Engineering Co.
Solvent recovery from foots oil using modified regenerated cellulose membranes
US4496456A
(en)
*
1983-06-03
1985-01-29
Exxon Research & Engineering Co.
Method for preparing thin regenerated cellulose membranes of high flux and selectivity for organic liquids separations
US4609728A
(en)
*
1983-06-15
1986-09-02
Gambro Dialysatoren Kg
Method of treating a cellulosic hollow fiber
Families Citing this family (2)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
DE2823985C2
(en)
*
1978-06-01
1986-01-02
Akzo Gmbh, 5600 Wuppertal
Dialysis membrane
IN153421B
(en)
*
1978-12-28
1984-07-14
Exxon Research Engineering Co
1971
1971-08-20
GB
GB3922471A
patent/GB1349394A/en
not_active
Expired
1971-09-02
DE
DE19712144028
patent/DE2144028A1/en
active
Pending
Cited By (3)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US4368112A
(en)
1978-12-28
1983-01-11
Exxon Research And Engineering Co.
Solvent recovery from foots oil using modified regenerated cellulose membranes
US4496456A
(en)
*
1983-06-03
1985-01-29
Exxon Research & Engineering Co.
Method for preparing thin regenerated cellulose membranes of high flux and selectivity for organic liquids separations
US4609728A
(en)
*
1983-06-15
1986-09-02
Gambro Dialysatoren Kg
Method of treating a cellulosic hollow fiber
Also Published As
Publication number
Publication date
DE2144028A1
(en)
1972-03-23
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Legal Events
Date
Code
Title
Description
1974-08-14
PS
Patent sealed
1977-03-16
PLNP
Patent lapsed through nonpayment of renewal fees
