Patent ID: 6218452
Filing Date: 2001-04-17
Classification: C08G,C08K,C08L,D01F,D06P

Abstract:
A process for preparing a polyamide which contains incorporated thereina) or b) whereina) is a compound having at least one sterically hindered amino group which is other than a nitrogen containing radical of a synthetic polyamide, andb) is selected from the group consisting of VII and VIIIwherein VII is Pa-(R.sub.11).sub.mand VIII is Pa-(CO--R.sub.12).sub.mwherein Pa is a nitrogen containing radical of a synthetic polyamide,R.sub.11 is a group attached to the nitrogen atom of the polyamide molecule containing one or more groups reactive to hydroxy and/or amino,R.sub.12 is a group containing a sterically hindered amino group andm is 1 or 2;said process comprises mixing a) or b) with the molten synthetic polyamide or precursors of said polyamide before, during or after the polycondensation process of the synthetic polyamide.