Process for the discontinuous production of aromatic in mixture

Details Process for the discontinuous production of aromatic in mixture Process for the discontinuous production of aromatic in mixture

1978-04-18

1981-10-27

Anderson, Harold D.

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

Synthetic resins

From carboxylic acid or derivative thereof

528312, 528319, 528331, 528338, 528339, 528335, 528347, 528348, C08G 6928

Patent

active

042974780

ABSTRACT:
A process is disclosed for the discontinuous production of a polyamide having the generic formula: ##STR1## and an inherent viscosity of at least 3, wherein 50 to 100% of the radicals R are p-phenylene radicals and 0 to 50% are n-butylene radicals. Terephthaloyl chloride, and optionally adipoyl chloride, are reacted in stoichiometric amounts with a solution of paraphenylenediamine and/or of 4,4'-diaminoadipanilide in a mixture of N-methylpyrrolidone-2 and calcium chloride which is homogeneous and substantially anhydrous, with a molar ratio of CaCl.sub.2 / unit: ##STR2## of at least 0.7, and under conditions such that the final composition contains 5 to 16% by weight of polymer, relative to the N-methylpyrrolidone-2. The polymer obtained can be converted into films, fibers and high-performance yarns for reinforcing composite materials or articles made of rubber.

REFERENCES:
patent: 3671542 (1972-06-01), Kwolek
patent: 3966686 (1976-06-01), Asakura et al.
patent: 4075172 (1978-02-01), Ozawa
patent: 4172938 (1979-10-01), Mera et al.
Fiber Forming Aromatic Polyamides-Man-Made Fibers, vol. 2 (Black et al.), p. 301, 1968.
Polymer Science (USSR) Federov et al., 12, 1970, pp. 2475-2491.
Polymery (Chodkowski et al.), 1971, pp. 514-515.

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