H-shaped polyamides

US5959069A · kind A · utility

Assignee

• BASF SE

Inventors

• Alexander Gluck · Freinsheim, DE
• Walter Gotz · Obersülzen, DE
• Stefan Grutke · Neustadt, DE
• Martin Laun · Mannheim, DE
• Volker Warzelhan · Bad Dürkheim, DE

Key dates

• Filing date: Dec 23, 1997
• Grant date: Sep 28, 1999
• Expiry date: Dec 23, 2017

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G69/36
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Polyamides are built up from, as fundamental building blocks (a), lactams or aminocarboxylic acids or mixtures of these, PA1 as fundamental building blocks (b), from 1 to 50 .mu.mol of at least tribasic amines or carboxylic acids per gram of polyamide, PA1 as fundamental building blocks (c), dibasic carboxylic acids or amines and PA1 as fundamental building blocks (d), monobasic carboxylic acids or amines, PA1 where (c) and (d) are carboxylic acids if (b) are amines, and (c) and (d) are amines if (b) are carboxylic acids, PA1 the equivalents ratio of the functional groups of (b) to the functional groups of (c) and (d) together is from 60:40 to 40:60 and PA1 the equivalents ratio of the functional groups of (c) to the functional groups of (d) is from 15:85 to 60:40.