SOLVENT STRIPPING PROCESS ULTILIZING AN ANTIOXIDANT
摘要
The invention is an improved process for stripping chemically bonded spinning solvent from a solution-spun nonwoven web by adding antioxidant to the fiber-forming polymer, and transporting the nonwoven web through a solvent stripping zone at a temperature and for a time sufficient to reduce the solvent concentration of the fibers to less than about 1000 ppmw.
申请公布号
WO2009062013(A3)
申请公布日期
2009.07.16
申请号
WO2008US82764
申请日期
2008.11.07
申请人
E. I. DU PONT DE NEMOURS AND COMPANY;ARORA, PANKAJ;SIDDIQUI, JUNAID, AHMED;FRISK, SIMON;KIM, YOUNG, H.
发明人
ARORA, PANKAJ;SIDDIQUI, JUNAID, AHMED;FRISK, SIMON;KIM, YOUNG, H.