Melt-blown polyarylene sulfide microfibers and method of making

Details Melt-blown polyarylene sulfide microfibers and method of making Melt-blown polyarylene sulfide microfibers and method of making

1995-08-21

1997-12-09

Hoke, Veronica P.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

264 13, 264 14, 264211, 2642112, 428296, 428903, 524120, 524126, 524127, 524128, 524151, 524153, 524609, D04H 158, B29B 900

Patent

active

056958692

ABSTRACT:
Melt-blown microfiber webs are prepared from polyarylene sulfide polymers, particularly polyphenylene sulfide. A small amount of a phosphite or phosphonite compound is added to the extruder feedstock. The additive essentially eliminates spurious polymer particle formation at the extruder die openings, even over sustained production periods. The polyarylene sulfide microfiber webs so produced are thus essentially free of spurious particulates, and the web defects which may be caused by such particulates.

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