Patent EP0272842A2 successfully refreshed from Google Patents.
EP0272842A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Filtration membranes
Assignee: Pall Corp
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Filing: 1987-12-09
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Granted: —
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Expires: 2007-12-09
Abstract
Abstract A porous polymeric medium having low protein affinity is provided comprising a porous polymeric substrate and a polymer coating having a low affinity for amide group-containing materials formed in situ at the surface of the porous polymeric substrate from a polymer having a plurality of hydroxyl groups and a cross-linking agent having functional groups which react with the hydroxyl groups.
Inventors
- 👤 Thomas C. Gsell
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-27 18:52
CPC Classifications
B; B01; B01D; B01D69/00; B01D69/12; B01D67/00; B01D67/0081; B01D67/0088; B01D39/00; B01D39/14; B01D39/16; C; C08; C08J; C08J9/00; C08J9/36; C08J9/40; C08J9/42; C08J2377/00; C08J2377/02; C08J2401/00
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
60 words
A porous polymeric medium having low-affinity for amide group-containing materials comprising: a porous polymeric substrate; and a polymer coating having a low affinity for amide group-containing materials formed in situ at the surface of said porous polymeric substrate from a polymer having a plurality of hydroxyl groups and a cross-linking agent having functional groups which react with the hydroxyl groups.
Claim 2
Dependent Claim
60 words
A porous polymeric medium having low-affinity for amide group-containing materials comprising: a porous polymeric substrate; and a polymer coating having a low affinity for amide group-containing materials formed in situ at the surface of said porous polymeric substrate from a polymer having a plurality of hydroxyl groups and a cross-linking agent having functional groups which react with the hydroxyl groups.
Claim 3
Dependent Claim
15 words
The porous polymeric medium of claim 1 wherein said porous polymeric substrate comprises a polyamide.
Claim 4
Dependent Claim
13 words
The porous polymeric medium of claim 2 wherein said polyamide is nylon 66.
Claim 5
Dependent Claim
16 words
The porous polymeric medium of claim 1 wherein said porous polymeric substrate comprises a hydrophilic material.
Claim 6
Dependent Claim
16 words
The porous polymeric medium of claim 4 wherein said polymeric coating comprises a cross-linked condensation polymer.
Claim 7
Dependent Claim
15 words
The porous polymeric medium of claim 1 wherein said cross-linking agent is a polymeric substance.
Claim 8
Dependent Claim
13 words
The porous polymeric medium of claim 1 wherein said polymeric substrate is microporous.
Claim 9
Dependent Claim
14 words
The porous polymeric medium of claim 1 wherein said medium is microporous and hydrophilic.
Claim 10
Dependent Claim
15 words
The porous polymeric medium of claim 1 wherein said hydroxyl group-containing polymer is hydroxypropyl cellulose.
Claim 11
Dependent Claim
20 words
The porous polymeric medium of claim 1 wherein said cross-linking agent is a copolymer of acrylic acid and N-methylol acrylamide.
Claim 12
Independent Claim
75 words
A method of producing a polymeric medium having low adsorbability of amide group-containing materials comprising: immersing a porous polymeric substrate having a high affinity for amide group-containing materials in a mixture comprising a polymer having hydroxyl moieties and a cross-linking agent having moieties condensable with said hydroxyl moieties to form a coating of said mixture on said polymeric substrate; removing said coated polymeric substrate from said mixture; and curing said coating on said polymeric substrate.
Claim 13
Independent Claim
75 words
A method of producing a polymeric medium having low adsorbability of amide group-containing materials comprising: immersing a porous polymeric substrate having a high affinity for amide group-containing materials in a mixture comprising a polymer having hydroxyl moieties and a cross-linking agent having moieties condensable with said hydroxyl moieties to form a coating of said mixture on said polymeric substrate; removing said coated polymeric substrate from said mixture; and curing said coating on said polymeric substrate.
References Cited (Backward Citations)
No citation records indexed.
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