| 摘要 |
1,215,003. Polyamides. IMPERIAL CHEMICAL INDUSTRIES Ltd. 1 Feb., 1968 [13 Feb., 1967], No. 6767/67. Heading C3R. The basic dyeability of polyamides is improved by including ) to 10 mole percent of a 9,9 - bis - omega - aminoalkyl - fluorene mono- or di-sulphonate in the polyamide-forming reactions. A polyamide containing a higher proportion of this component may be heated with a polyamide not containing it to give a copolyamide according to the invention.
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