Nylon 6 synthesis with water, alkali metal hypophoshite catalyst

Details Nylon 6 synthesis with water, alkali metal hypophoshite catalyst Nylon 6 synthesis with water, alkali metal hypophoshite catalyst

1992-09-18

1993-11-23

Anderson, Harold D.

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

Synthetic resins

From carboxylic acid or derivative thereof

526 65, 526 66, 528314, 528315, 528318, 528323, C08G 6920

Patent

active

052645410

ABSTRACT:
A method for the polymerization of Nylon 6 from caprolactam and water using a catalyst composition comprising a primary catalyst, which can be an alkali metal hypophosphite or an alkali-earth metal hypophosphite, and an amine cocatalyst. The amine cocatalyst can be selected from the group consisting of phenylene diamines, hindered amines, poly(hindered amines), Group I benzotriazoles, and Group II benzotriazoles. The catalyst composition used in this invention is most useful when used in conjunction with the reactive extrusion technology which requires a very fast polymerization rate to take full advantage of this evolving technology.

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