Process for the production of stabilized acrylic fibers which ar

Details Process for the production of stabilized acrylic fibers which ar Process for the production of stabilized acrylic fibers which ar

1981-10-14

1982-12-21

Meros, Edward J.

Chemistry of inorganic compounds

Carbon or compound thereof

Elemental carbon

81155, 264 292, 4234474, 4234475, D01F 922

Patent

active

043649165

ABSTRACT:
An improved process for the relatively rapid thermal stabilization of a multifilamentary acrylic fibrous material in the substantial absence of filament coalescence is provided. The fibrous material is initially contacted with a solution of hydroxylamine (as described), and subsequently with a solution of ammonium permanganate, calcium permanganate, magnesium permanganate, or mixtures thereof (as described). The resulting fibrous material which possesses a chemically altered structure is heated in an oxygen-containing atmosphere until a thermally stabilized acrylic fibrous material is formed which is capable of undergoing carbonization and is non-burning when subjected to an ordinary match flame.

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