Aromatic copolyamide fiber from benzidine sulfone or diamino phe

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof

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Details

260 308R, 264176F, 525410, 528336, 528339, 528341, 528344, C08G 6932

Patent

active

041784316

ABSTRACT:
Fibers of a copolyamide derived from a diamine component including 10 to 50 mole % of benzidine sulfone or 2,7-diaminophenanthridone and 90 to 50 mole % of p-phenylene diamine and a dicarboxylic acid component derived from a reactive derivative of terephthalic acid are disclosed. The fibers have an initial modulus of elasticity of at least 400 g/d and a tensile strength of at least 16 g/d.
The fibers have in combination various desirable properties, such as excellent initial modulus of elasticity, high tensile strength, high knot strength, high heat resistance and good adhesiveness to various plastics, rubbers and adhesives, and they are valuably used in various industrial fields as fibrous reinforcers and for production of fiber-reinforced plastics and rubber products.

REFERENCES:
patent: 3006899 (1961-10-01), Hill et al.
patent: 3240760 (1966-03-01), Preston et al.
patent: 3354125 (1967-11-01), Smith et al.
patent: 3376268 (1968-04-01), Preston
patent: 3467623 (1969-09-01), Hinderer et al.

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