Spandex containing certain alkali metal salts

Details Spandex containing certain alkali metal salts Spandex containing certain alkali metal salts

1993-09-30

1996-07-23

Seidleck, James J.

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...

811551, 811554, 811564, 811568, 524395, 524420, 524590, 524773, 524775, 524777, 524871, 528906, C08K 509, D06M 13188, D06M 13224, D06M 13248

Patent

active

055390374

ABSTRACT:
An alkali metal salt additive in very low concentration in spandex (e.g., 0.02-0.25%) increases the heat set efficiency of spandex. The anion of the salt is a carboxylate having 1 to 10 carbon atoms or thiocyanate.

REFERENCES:
patent: 3624179 (1971-11-01), Carroll
patent: 4296174 (1981-10-01), Hanzel et al.
patent: 4340527 (1982-07-01), Martin
patent: 4973647 (1990-11-01), Bretches et al.
patent: 5000899 (1991-05-01), Dreibelbis et al.
patent: 5086150 (1992-02-01), Frauendore et al.

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