Preparation of polyamide with mixture of phosphorus catalysts

Details Preparation of polyamide with mixture of phosphorus catalysts Preparation of polyamide with mixture of phosphorus catalysts

1992-09-18

1994-03-29

Anderson, Harold D.

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

Synthetic resins

From carboxylic acid or derivative thereof

502162, 526 65, 526 66, 528335, 528347, C08G 6928

Patent

active

052985989

ABSTRACT:
A catalyst composition for the polymerization of polyamide/copolyamide comprising a primary catalyst which comprises an alkali metal hypophosphite or an alkali-earth metal hypophosphite, and an organic phosphite cocatalyst. The catalyst composition of 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.

REFERENCES:
patent: 5194573 (1993-03-01), Poll et al.
patent: 5245006 (1993-09-01), Poll et al.

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