Polyphenylene sulfone fibers and a method for production...

Details Polyphenylene sulfone fibers and a method for production... Polyphenylene sulfone fibers and a method for production...

D - Textiles, Paper

01

F

402/319, 18/583

D01F 6/76 (2006.01) B01D 39/16 (2006.01) C08G 75/20 (2006.01) C08J 7/14 (2006.01) D01F 6/66 (2006.01) D01F 8/10 (2006.01) D01F 8/16 (2006.01) D01F 11/08 (2006.01)

Patent

CA 1335745

Disclosed are polyphenylene sulfone fibers mainly con- sisting of a structural unit represented by the general formula Image (wherein x is 0 or 1 or 2, ?, the average value of x is 1.0 to 2.0 and the bond attached to the benzene ring is in the para- or meta-position with respect to the SOx group). The fibers can be obtained by oxidizing polyphenylene sulfide fibers mainly consisting of a structural unit represented by the formula Image (wherein the bond attached to the benzene ring is in the para- or meta-position with respect to the S atom) with an organic peracid. The fibers of the present invention have very excellent heat resistance and chemicals resistance and are useful for the production of woven, knitted or n-on-woven sheets or fabrics, particularly filters for refining concentrated sulfuric acid or nitric acid.

552830

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