Title:
高有孔密度と等方性、異方性の混合構造とを有する微小濾過膜
Document Type and Number:
Japanese Patent JP4234790
Kind Code:
B2
Abstract:
The present invention relates to the field of synthetic polymeric microfiltration membrane materials that are fabricated to separate liquids from solids contained therein. One aspect of the invention relates to a sulfone polymer membrane with high surface porosity (high pore density) and distinctive asymmetry that can separate solids (i.e., blood cells) from a liquid (i.e., plasma) without the need for centrifugation. The membrane is further rendered hydrophilic through co-casting the sulfone polymer (which is a hydrophobic polymer) with a hydrophilic polymer, such as polyvinylpyrrolidone. Because of these properties and the fact that it requires only a small amount of the solid containing liquid (i.e., whole blood) to be applied to the larger pore surface, the membranes of the invention are highly useful in testing devices for the quick detection of properties or components contained in liquid samples, such as diagnostic applications (i.e., the detection of physiological conditions (i.e., pregnancy, insulin level, stomach ulcer, and the like) and infectious diseases (i.e., AIDS, hepatitis, and the like)).
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Inventors:
One Fan
Dieter Jerome F
Maurice Rick
Dieter Jerome F
Maurice Rick
Application Number:
JP50221697A
Publication Date:
March 04, 2009
Filing Date:
June 07, 1996
Export Citation:
Assignee:
Pall Corporation
International Classes:
B01D71/68; B01D67/00; B01D69/02; B01D69/10; C08L41/00; C08L45/00; C08L81/06
Domestic Patent References:
| JP5507328A | ||||
| JP4334532A | ||||
| JP7504615A | ||||
| JP63139930A | ||||
| JP4349927A | ||||
| JP7222917A | ||||
| JP62027006A | ||||
| JP4300636A | ||||
| JP62038205A | ||||
| JP61000402A | ||||
| JP3267128A |
Attorney, Agent or Firm:
Yuichi Yamada
Masakazu Noda
Ikeda adult
Masakazu Noda
Ikeda adult