EP0219878A2
Expired / Lapsed
EP
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Gas separation process and membrane
Assignee: EIDP Inc
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Filing: 1986-10-24
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Granted: —
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Expires: 2006-10-24
Abstract
Abstract A polyaramide asymmetric membrane useful in separating mixtures of gases is disclosed. The polyaramide contains repeating units of the formula wherein Ar is or wherein R is am alkyl group of 1 to 3 carbon atoms and-R' is R or-H, and Ar' is or mixtures thereof.
Inventors
- 👤 Philip Manos
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 04:08
CPC Classifications
B; B01; B01D; B01D67/00; B01D67/0081; B01D67/0095; B01D71/00; B01D71/06; B01D71/56; C; C08; C08G; C08G69/00; C08G69/02; C08G69/26; C08G69/32
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
55 words
An asymmetric polyamide membrane wherein the diamine component of at least one polyaramide component comprises an aromatic polyamide containing the repeating unit wherein -Ar- is or where R is alkyl of 1 to 3 carbon atoms, -R' is -R or -H, and Y- is -H, -CH 3 or -CF 3 , and where -Ar'- is
Claim 2
Dependent Claim
55 words
An asymmetric polyamide membrane wherein the diamine component of at least one polyaramide component comprises an aromatic polyamide containing the repeating unit wherein -Ar- is or where R is alkyl of 1 to 3 carbon atoms, -R' is -R or -H, and Y- is -H, -CH 3 or -CF 3 , and where -Ar'- is
Claim 3
Dependent Claim
23 words
The membrane of Claim 1 consisting essentially of a polyaramide or copolyamide containing at least 40 mole % repeating units of the structure
Claim 6
Dependent Claim
8 words
The membrane of Claim 1 wherein -Ar- is
Claim 9
Dependent Claim
21 words
The membrane of Claim 3 wherein Ar'- is a mixture of from 50 to 80 weight and 50 to 20 weight
Claim 10
Dependent Claim
12 words
The membrane of Claim 2 wherein -Ar- is wherein -Ar- is or
Claim 11
Dependent Claim
21 words
The membrane of Claim 5 wherein -Ar is a mixture of from 50 to 80 weight and 50 to 20 weight
Claim 12
Dependent Claim
9 words
The membrane of Claim 6 wherein -Y is -H.
Claim 13
Dependent Claim
37 words
The membrane of Claim 1 consisting essentially of a blend of up to 60 weight % of an aromatic polyamide and at least 40 weight percent of a polyaramide consisting essentially of repeating units of the formula
Claim 16
Dependent Claim
8 words
The membrane of Claim 8 wherein -Ar- is
Claim 17
Dependent Claim
21 words
The membrane of Claim 9 wherein -Ar- is a mixture of from 50 to 80 weight and 50 to 20 weight
Claim 18
Dependent Claim
9 words
The membrane of Claim 8 wherein -Ar- is or
Claim 19
Dependent Claim
22 words
The membrane of Claim 11 wherein -Ar'- is a mixture of from 50 to 80 weight and 50 to ' 20 weight
Claim 20
Dependent Claim
9 words
The membrane of Claim 12 wherein -Y is -H.
Claim 21
Dependent Claim
14 words
A process of separating a mixture of gases using the membrane of Claim 1.
References Cited (Backward Citations)
No citation records indexed.
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