Polyamides Formed From Metaxylylenediamine and Adipic and Having an Amino End Group Content of Less Than 15 Mmol/Kg
AssigneeBASF SE
InventorsJoachim Strauch, Jurgen Deininger, Bernhard Rosenau, Thomas Liese-Sauer, Rolf-Egbert Grutzner
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Abstract
The present invention relates to novel and improved polyamides composed of meta-xylylenediamine and having an amino end group content of less than 15 mmol/kg. Also found have been processes for preparing these polyamides composed of meta-xylylenediamine and adipic acid and having an amino end group content of less than 15 mmol/kg, which comprises reacting salt solutions of adipic acid and m-xylylenediamine at temperatures of from 80 to 300° C. and a pressure of from 1 to 20 bar with removal of water.
Claims12
A polyamide composed of meta-xylylenediamine and adipic acid, wherein the amino end group content is less than 15 mmol/kg, the relative viscosity is from 1.55 to 2.0 and the content of triamine in the polyamide is less than or equal to 0.3 mol %.
Dependencies are inferred from the claim text.