EP0134055A2
Expired / Lapsed
EP
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Composite dense membrane and fluid(s) separation process carried out therewith
Assignee: Shell Internationale Research Maatschappij BV
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Filing: 1984-07-27
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Granted: —
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Expires: 2004-07-27
Abstract
Abstract Composite dense membrane comprising a dense selective film of a silicon-free polymerizate, a dense highly permeable polymeric intermediate layer formed by conventional polymerization and a microporous substrate supporting the polymerizate film and the intermediate layer. Fluids, e.g. gases may be selectively separated using such a composite dense membrane.
Inventors
- 👤 Albert Van Der Scheer
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 18:31
CPC Classifications
B; B01; B01D; B01D71/00; B01D71/06; B01D71/76; B01D69/00; B01D69/12; B01D69/125; B01D69/127
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
38 words
Composite dense membrane comprising a dense selective film of a silicon-free polymerizate, a dense highly permeable polymeric intermediate layer formed by conventional polymerization as defined hereinbefore and a microporous substrate supporting the polymerizate film and the intermediate layer.
Claim 2
Dependent Claim
38 words
Composite dense membrane comprising a dense selective film of a silicon-free polymerizate, a dense highly permeable polymeric intermediate layer formed by conventional polymerization as defined hereinbefore and a microporous substrate supporting the polymerizate film and the intermediate layer.
Claim 3
Dependent Claim
25 words
Composite dense membrane as claimed in claim 1, wherein the dense polymeric intermediate layer has a thickness of at least less than about 5 micrometer.
Claim 4
Dependent Claim
30 words
Composite dense membrane as claimed in claim 1 or 2, wherein the dense polymeric intermediate layer has a thickness in the range of about 0.01 micrometer to about 5 micrometer.
Claim 5
Dependent Claim
42 words
Composite dense membrane as claimed in any one of the claims 1-3 comprising a dense ultrathin selective film of a silicon-free plasma polymerizate, a dense highly permeable intermediate layer and a microporous substrate supporting the plasma polymerizate film and the intermediate layer.
Claim 6
Dependent Claim
26 words
Composite dense membrane as claimed in claim 4, wherein the ultrathin film of plasma polymerizate has a thickness of at least less than about 0.1 micrometer.
Claim 7
Dependent Claim
31 words
Composite dense membrane as claimed in any one of the claims 1-5, wherein the pores in the microporous substrate have a diameter in the range of 1 nanometer to 1 micrometer.
Claim 8
Dependent Claim
28 words
Composite dense membrane as claimed in any one of the claims 1-6, further comprising a dense highly permeable protecting layer on top of the selective film of polymerizate.
Claim 9
Dependent Claim
23 words
Composite dense membrane as claimed in claim 7, wherein the protecting layer has a thickness of at least less than about 5 micrometer.
Claim 10
Dependent Claim
26 words
Composite dense membrane as claimed in claim 7 or 8, wherein the protecting layer has a composition substantially equal to that of the polymeric intermediate layer.
Claim 11
Dependent Claim
13 words
Composite dense membrane substantially as described hereinbefore with particular reference to the Examples.
Claim 12
Dependent Claim
13 words
Composite dense membrane substantially as described hereinbefore with particular reference to the Examples.
Claim 13
Dependent Claim
35 words
Process for the separation of fluids, wherein during operation a pressure difference is maintained between the upstream- and the downstream surface of a composite dense membrane as claimed in any one of the claims 1-10.
Claim 14
Dependent Claim
16 words
Process for the separation of fluids substantially as described hereinbefore with particular reference to the Examples.
Claim 15
Dependent Claim
16 words
Process for the separation of fluids substantially as described hereinbefore with particular reference to the Examples.
References Cited (Backward Citations)
No citation records indexed.
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