Polyacrylonitrile filament yarns

Details Polyacrylonitrile filament yarns Polyacrylonitrile filament yarns

1977-12-14

1979-02-20

Woo, Jay H.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

264206, 428364, 526342, C08F 200

Patent

active

041408446

ABSTRACT:
The invention relates to dry-spun polyacrylonitrile filament yarns having a tensile strength of at least 47 cN/tex and an individual filament denier of at most 1.5 dtex and preferably an overall denier of 20 to 145 tex as well as to a process for the production thereof by spinning, hot drawing and relaxing, wherein the spun filaments are drawn during spinning to such an extent that, after subsequent hot drawing in a ratio of from 1:6 to 1:10 and relaxation, the individual filaments have a denier of at most 1.6 dtex.

REFERENCES:
patent: 2649427 (1953-08-01), Marvel
patent: 2811409 (1957-10-01), Clarr et al.
patent: 2975022 (1961-03-01), Fuler
patent: 3975337 (1976-08-01), Reicher et al.

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