EP0272841A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Filtration media
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 a low affinity for amide group-containing materials is provided comprising a porous polymeric substrate and a surface-modifying polymeric material having a low affinity for amide group-containing materials formed in situ and covalently bonded to the surface of the porous polymeric substrate, the surface-modifying polymeric material being formed from a monofunctional monomer having at least one hydroxyl group.
Inventors
- 👤 Thomas C. Gsell
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-25 03:17
CPC Classifications
B; B01; B01D; B01D69/00; B01D69/12; B01D39/00; B01D39/14; B01D39/16; B01D67/00; B01D67/0081; B01D67/0093; B01D67/00931; C; C08; C08J; C08J9/00; C08J9/36; C08J9/40; C08J9/405; B01D2323/00; B01D2323/38; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249978; Y10T428/249979; Y10T428/31504; Y10T428/31725; Y10T428/31739
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
60 words
A porous polymeric medium having a low-affinity for amide-group containing materials comprising: a porous polymeric substrate; and a surface-modifying polymeric material having a low affinity for amide-group containing materials formed in situ at and covalently bonded to the surface of said porous polymeric substrate, said surface-modifying polymeric material being formed from a monofunctional monomer having at least one hydroxyl group.
Claim 2
Dependent Claim
60 words
A porous polymeric medium having a low-affinity for amide-group containing materials comprising: a porous polymeric substrate; and a surface-modifying polymeric material having a low affinity for amide-group containing materials formed in situ at and covalently bonded to the surface of said porous polymeric substrate, said surface-modifying polymeric material being formed from a monofunctional monomer having at least one hydroxyl group.
Claim 3
Dependent Claim
27 words
The porous polymeric medium of claim 1 wherein said polymeric substrate comprises a material having C-H bonds capable of forming radicals under the influence of ionizing radiation.
Claim 4
Dependent Claim
15 words
The porous polymeric medium of claim 1 wherein said porous polymeric substrate comprises a polyamide.
Claim 5
Dependent Claim
13 words
The porous polymeric medium of claim 3 wherein said polyamide is nylon 66.
Claim 6
Dependent Claim
16 words
The porous polymeric medium of claim 1 wherein said porous polymeric membrane comprises a hydrophilic material.
Claim 7
Dependent Claim
19 words
The porous polymeric medium of claim 1 wherein said polymeric material comprises a material rich in pendant hydroxyl groups.
Claim 8
Dependent Claim
17 words
The porous polymeric medium of claim 1 wherein said porous polymeric substrate and said medium are microporous.
Claim 9
Dependent Claim
23 words
The porous polymeric medium of claim 1 wherein said monomer from which said surface-modifying polymeric material is formed comprises an ethylenically unsaturated compound.
Claim 10
Dependent Claim
15 words
The porous polymeric medium of claim 1 wherein said amide group-containing material comprises proteinaceous material.
Claim 11
Dependent Claim
32 words
The porous polymeric medium of claim 9 wherein said medium has an adsorption of proteinaceous material measured by the Bovine Serum Albumin Adsorption Test of less than 100 micrograms per square centimeter.
Claim 12
Independent Claim
77 words
A method of producing a porous polymeric medium having a low amide group-containing sorbability comprising: contacting a porous polymeric substrate with a solution of a monofunctional monomeric compound having at least one hydroxyl group and capable of forming a polymer having a low affinity for amide group-containing material; and exposing said polymeric substrate and said monomeric compound to ionizing radiation to effect polymerization of said monomeric compound at the surface of said substrate to form said medium.
Claim 13
Independent Claim
77 words
A method of producing a porous polymeric medium having a low amide group-containing sorbability comprising: contacting a porous polymeric substrate with a solution of a monofunctional monomeric compound having at least one hydroxyl group and capable of forming a polymer having a low affinity for amide group-containing material; and exposing said polymeric substrate and said monomeric compound to ionizing radiation to effect polymerization of said monomeric compound at the surface of said substrate to form said medium.
References Cited (Backward Citations)
No citation records indexed.
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