Process for maintaining of improving the mechanical properties o

Details Process for maintaining of improving the mechanical properties o Process for maintaining of improving the mechanical properties o

1994-01-13

1997-04-01

Hampton-Hightower, P.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Treating polymer containing material or treating a solid...

528488, 528489, 524 5, 811551, 811554, 811569, 428395, 4284111, C08F 600, D06M 1100

Patent

active

056166834

ABSTRACT:
A process for maintaining or increasing the tensile strength of fibers of aromatic copolyamides which are formed from a major portion of para-monomers and are soluble in organic aprotic and polar solvents. The process involves storing the fibers in alkaline media after production by wet or dry spinning processes, after treatment of the dry or wet spun fibers, and storing the fibers in an aqueous environment having a pH of at least 10. The tensile strength of the fibers is retained or increased.

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Chemiefasern/Textilindustrie Bd. 42, Nr. 10, Oct. 1992, Neue Moglichkeiten mit neuen Aramidfasern.
Textile Research Journal, Bd. 62, Nr. 12, Dec. 1992, New Concepts in para-aramid Fibers.

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