Process for the manufacture of nylon compositions with improved

Details Process for the manufacture of nylon compositions with improved Process for the manufacture of nylon compositions with improved

1996-08-21

1998-10-20

Hampton-Hightower, P.

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

Synthetic resins

From carboxylic acid or derivative thereof

528170, 528172, 528173, 528183, 528310, 528312, 528315, 528323, 528328, 528332, 528335, 528336, 528349, C08G 7310, C08G 6928

Patent

active

058247637

ABSTRACT:
A process is disclosed for preparing a polyamide by polymerizing a diacid and a diamine, aminocarboxylic acid or lactam in the presence of excess of either acid or amine such that the ratio of acid to amine end groups or the ratio of amine end groups to acidend groups in the polymer is at least 2.0:1.0.

REFERENCES:
patent: 4195164 (1980-03-01), Meyer et al.
patent: 4892927 (1990-01-01), Meyer et al.
patent: 4963646 (1990-10-01), Galland et al.
Philippe Marechal Gaetane Coppens, Roger Legras and Jean-Marc Dekoninck, Amine/Anhydride Reaction Versus Amide/Anhydride Reaction in Polyamide/Anhydride Carriers, Journal of Polymer Science: Part A: Polymer Chemistry, 33, 757-766, 1995.

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