FIELD: chemistry.
SUBSTANCE: wholly aromatic couple-type sopoliamide drawn fiber has a tensile modulus of 630 cN/dtex or more, a dry heat creep 2.0×10-4 % or less after 10 hours at 80°C. Hot-stretch fiber is at high voltage and at a temperature in certain ranges of para-substituted aromatic sopoliamide fiber type.
EFFECT: creation of a wholly aromatic couple-type sopoliamide fiber having excellent tensile modulus.
8 cl, 2 tbl, 10 ex
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