EP0146020A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Gas separating membrane
Assignee: Daikin Industries Ltd
•
Filing: 1984-11-27
•
Granted: —
•
Expires: 2004-11-27
Abstract
Abstract This invention provides a material for gas separating membrane comprising a fluorine-containing acrylate or methacrylate polymer or a crosslinked compound of the polymer.
Inventors
- 👤 Akira Ohmori
- 👤 Nobuyuki Tomihashi
- 👤 Hiroshi Inukai
- 👤 Naoaki Izutani
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 11:03
CPC Classifications
B; B01; B01D; B01D71/00; B01D71/06; B01D71/40; B01D71/401
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
20 words
A material for gas separating membrane comprising a fluorine-containing acrylate or methacrylate polymer or a crosslinked compound of the polymer.
Claim 2
Dependent Claim
20 words
A material for gas separating membrane comprising a fluorine-containing acrylate or methacrylate polymer or a crosslinked compound of the polymer.
Claim 3
Dependent Claim
88 words
A material as defined in claim 1 wherein the polymer comprises a structural unit represented by the formula wherein R is -H or -CH 3 , t is an integer of from 1 to 3 and n is an integer of from 0 to 5, and/or a structural unit represented by the formula wherein R is as defined above, X 1 is -H or -O H , X 2 is p and q are each 0 or 1, and r is an integer of from 1 to 10.
Claim 4
Dependent Claim
76 words
A material as defined in claim 1 wherein the polymer further comprises a structural unit represented by the formula wherein R is as defined above, and Y is -H or a group represented by -(CH 2 ) s Y 1 (wherein Y 1 is -COOH, -OH, and s is an integer of from 1 to 5), in addition to the structural unit represented by the formula (a) and/or the structural unit represented by the formula (b).
Claim 5
Dependent Claim
42 words
A material as defined in claim 2 wherein the polymer comprises 70 to 100% by weight of structural units represented by the formula (a) and/or the formula (b) and 0 to 30% by weight of structural units represented by the formula (c).
Claim 6
Dependent Claim
11 words
A gas separating membrane prepared from a material of claim 1.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.