Method and system for producing a spinning solution for producing a polymer fiber
AssigneeList Holding AG
InventorsReinhard Geisler, Pierre Lichti, Thomas Isenschmid
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Abstract
A method for producing a spinning solution for producing a polymer fiber, particularly a p-aramid fiber, the polymer being blended with a solvent, mixed, melted, homogenized, and degassed and then discharged, liquid sulfuric acid being used as the solvent and at least the mixing, homogenization, and degassing taking place in a preferably continuously operated single or double cell reactor (1).
Claims11
1-11. (canceled)
A method of producing a spinning solution for producing a p-aramid fiber comprising admixing a polymer with a solvent to form a mixture, and thereafter melting, homogenizing, devolatilizing and then discharging the mixture, wherein the solvent is liquid sulfuric acid and the mixing, homogenizing and devolatilizing is effected in a continuously operated single or twin-shaft reactor.
Dependencies are inferred from the claim text.