POLYAMIDS CONSTITUTED BY META-XYLILENDIAMINE AND ADIPIC ACID WITH A CONTENT IN EXTREME AMINO TYPE GROUPS LESS THAN 15 MMOL / KG.

摘要

Polyamides, consisting of meta-xylethylenediamine and adipic acid, characterized in that the content in amino-type end groups is less than 15 mmol / kg, the relative viscosity being between 1.55 and 2.0 and the triamine content being polyamide less than or equal to 0.3 mol%, the measurement of the relative viscosity of the polyamide being carried out with samples of 1 g of polyamide in 100 ml of 96% sulfuric acid by weight and with the help of a Ubbelohde viscometer 2 type 50120 (Schott signature) in accordance with DIN EN ISO 1628-1.