Production of polyamide

Details Production of polyamide Production of polyamide

2005-07-12

2005-07-12

Hightower, P. Hampton (Department: 1711)

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

Synthetic resins

From carboxylic acid or derivative thereof

C528S312000, C528S322000, C528S323000, C528S332000, C528S335000, C528S336000, C528S480000, C528S483000, C528S503000

Reexamination Certificate

active

06916901

ABSTRACT:
The present invention provides a method for the production of polyamide 6 by the hydrolytic polymerization of ε-caprolactam, in which, in the first step, caprolactam ring opening occurs under the action of water and, in the following steps, polycondensation is performed at low temperatures under anhydrous conditions.

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