Aromatic polyamide fiber free of crystal defect layers perpendic

Details Aromatic polyamide fiber free of crystal defect layers perpendic Aromatic polyamide fiber free of crystal defect layers perpendic

1989-10-23

1991-09-10

Anderson, Harold D.

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

Synthetic resins

From carboxylic acid or derivative thereof

528183, 528337, 528344, C08G 6946

Patent

active

050475002

ABSTRACT:
A fiber product comprising one or more fibers of aromatic polyamide polymer having a microscopic structure of an extended molecular chain, free of crystal defect layers perpendicular to the fiber axis, a high inherent viscosity of at least 3.0 [dl/g], and a high tensile strength of at least 15 g/d, said inherent viscosity being determined at 30.degree. C. using a concentration of 0.5 grams of said polymer in 100 ml of concentration sulfuric acid.

REFERENCES:
patent: 4560743 (1985-12-01), Fujiwara et al.

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