Two fiber filtration material

Details Two fiber filtration material Two fiber filtration material

2003-12-31

2008-10-14

Cecil, Terry K (Department: 1797)

Liquid purification or separation

Filter

Material

C210S508000, C055S527000

Reexamination Certificate

active

07434698

ABSTRACT:
A filtration material comprising a blend of at least two types of fibers: (a) polypropylene fibers and (b) either acrylic or modacrylic fibers. In a preferred embodiment, the blend contains about 50 weight percent polypropylene fibers and about 50 weight percent modacrylic fibers. In another preferred embodiment, the blend contains about 50 weight percent polypropylene fibers and about 50 weight percent acrylic fibers. The fibers can be blended ranging from 90:10 to 10:90 polypropylene to acrylic or modacrylic. At least one type of fibers includes an extractable agent on the outer surfaces thereof. Performance of the blend is superior to the prior art filtration materials, especially at the preferred compositions.

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patent: 9603483 (1996-11-01), None
patent: WO9636483 (1996-11-01), None
patent: 0004216 (2000-01-01), None
patent: WO0004216 (2000-01-01), None

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