Filter material containing a polycyanoaryl ether

Details Filter material containing a polycyanoaryl ether Filter material containing a polycyanoaryl ether

1998-10-30

2000-06-13

Simmons, David A.

Gas separation

Flexible or collapsible bag type

55522, 55528, 55DIG45, B01D 3908, B01D 3916

Patent

active

060744499

ABSTRACT:
Provided is a filter favorably used in high-temperature long-term exposure conditions, for example, in coal boilers, cupola furnaces for steel and cast iron production, cement kilns, aggregate drying furnaces, furnaces for non-iron metals, etc. For the filter, provided are a filter material comprising a web or a web and its support, which contains a polycyanoaryl ether in an amount of not smaller than 5% by weight relative to the weight of the filter material; and a filter material comprising a substrate of polycyanoaryl ether fibers or of polycyanoaryl ether fibers and other organic fibers, and a web of at least one type of fibers selected from polycyanoaryl ether fibers and other organic fibers, wherein the amount of the polycyanoaryl ether fibers is not smaller than 5% by weight relative to the total weight of the substrate and the web.

REFERENCES:
patent: 4640974 (1987-02-01), Matsuo et al.
patent: 4977234 (1990-12-01), Matsuo
patent: 5080698 (1992-01-01), Krizan
Patent Abstracts of Japan, vol. 095, No. 009, Oct. 31, 1995, UP 07 157917, Jun. 220, 1995.

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