Process for recycling polyarylene sulfides
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United States of America Patent
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May 30, 2000
Issued Date -
N/A
app pub date -
Apr 20, 1999
filing date -
Oct 13, 1994
priority date (Note) -
Expired
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Abstract
The present invention relates to a process for obtaining polyarylene sulfide from polyarylene sulfide-containing material. For this purpose, the polyarylene sulfide-containing material is treated with a solvent in which it dissolves, and is subsequently reprecipitated. The invention also relates to the purification of polyarylene sulfide-containing material by separating off extraneous substances, to polyphenylene sulfide particles having a specific surface area of at least 80 m.sup.2 /g and to their use as filter material.
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