Filter felts and bag filters comprising blends of fibers derived from diamino diphenyl sulfone and heat resistant fibers

Filter felts and bag filters comprising blends of fibers derived from diamino diphenyl sulfone and heat resistant fibers

  • CN 101,784,323 A
  • Filed: 08/22/2008
  • Published: 07/21/2010
  • Est. Priority Date: 08/22/2007
  • Status: Active Grant
First Claim
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1. the filter felt that comprises intimate blend of staple fibers, described blend comprises:

  • A) polymer short fiber of 20 to 75 weight portions, described polymer short fiber comprise and derive from polymer of monomers or copolymer, and described monomer is selected from 4,4 '"'"'-DADPS, 3, and 3 '"'"'-DADPS and their mixture, andB) the heat-resisting short fiber of 25 to 80 weight portions, described heat-resisting short fiber is selected from meta-aramid fiber, acrylic fiber, polyphenylene sulfide fibre and para-aramid fiber;

    Described weight portion be by the polymer fiber in the described felt and heat resistance fiber totally 100 weight portions be.

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