Process for adjusting the viscosity of highly concentrated elast

Details Process for adjusting the viscosity of highly concentrated elast Process for adjusting the viscosity of highly concentrated elast

1996-05-07

1997-03-11

Foelak, Morton

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

525453, 525459, 525460, 528 49, 528 61, C08J 300, C08K 320, C08L 7500

Patent

active

056102291

ABSTRACT:
The invention relates to a process for adjusting the viscosity of highly concentrated elastane solutions by reaction of the solution with secondary aromatic amines in order to produce spinning solutions for the dry or wet spinning of elastane fibers.

REFERENCES:
patent: 5032664 (1991-07-01), Frauendorf et al.
patent: 5061426 (1991-10-01), Frauendorf et al.
patent: 5236994 (1993-08-01), Markusch et al.
patent: 5267430 (1993-12-01), Payen
patent: 5302660 (1994-04-01), Klinksiek et al.

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