Process for the preparation of linear polyamides containing sulfonategroups
Abstract
Abstract WHEREIN Z represents a trivalent aromatic radical and n represents one of the numbers 0 and 1, by means of polycondensation in solution and subsequent treatment with bases. The structure formed from these polyamides are distinguished by a high affinity for cationic dyestuffs. The invention relates to filaments, fibers and sheets from linear polyamides containing sulfonate groups as well as to a process for the preparation of these polyamides from aromatic dicarboxylic acid dichlorides and aromatic diamines which may contain small amounts of aliphatic, cyclo-aliphatic dicarboxylic acid dichlorides or mixtures of aliphatic and cyclo-aliphatic dicarboxylic acid dichlorides and diamines, using 2 to 15 mole percent, referred to the total amount of the dicarboxylic acid dihalides, of at least one dicarboxysulfonic acid trichloride of the general formula
Inventors
- 👤 G Keil
Bibliographic Details
Claims Analysis
Total Claims: 3References Cited (Backward Citations)
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