Two-step process for the manufacture of polyamide from diamine a

Details Two-step process for the manufacture of polyamide from diamine a Two-step process for the manufacture of polyamide from diamine a

1986-08-27

1988-04-19

Anderson, Harold D.

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

Synthetic resins

From carboxylic acid or derivative thereof

528336, C08G 6928

Patent

active

047390352

ABSTRACT:
The process for manufacturing polyamides, suitable for fibers, from an .alpha.,.omega.-dinitrile, and an .alpha.,.omega.-diamine in water in contact with a catalyst that is improved by (1) first, reacting the dinitrile and water in the presence of the catalyst at a temperature sufficient to cause substantial hydrolysis of the dinitrile and (2) subsequently adding the diamine to the reaction mixture of the dinitrile and water at a temperature sufficient to cause polymerization.

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patent: 4490521 (1984-12-01), Coffey et al.
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