| 摘要 |
POLYAMIDES. M1-. Are formed by polycondensation from aliphatic or aromatic dicarboxylic acids and aliphatic diamines, lactams or from aminocarboxylic acids, a minor proportion of the reactants containing alkali metal alkyl sulphonates or aryl sulphonates, and secondary or tertiary N. atoms not being part of the radical forming the amide. Used for producing fibres for making fabrics for clothing. |
