Particulate metal filter-medium for polymer melts

Details Particulate metal filter-medium for polymer melts Particulate metal filter-medium for polymer melts

C - Chemistry, Metallurgy

22

C

182/124, 75/3

C22C 38/34 (2006.01) B01D 39/06 (2006.01) B29C 47/68 (2006.01) D01D 1/10 (2006.01)

Patent

CA 1036843

ABSTRACT OF THE DISCLOSURE A particulate metal filter medium for polymer melts is characterized by a shape factor of less than 0.58, is exceptionally porous and has a high resistance to compaction at melt filtration pressures and is substantially inert to polymer melts. The particulate filtering medium is formed form an alloy containing 30 to 40% by weight chromium, about 3 % by weight silicon minor amounts of carbon and nitrogen and the remainder iron.

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