Number | Name | Date | Kind |
---|---|---|---|
3480635 | Altwicker | Nov 1969 | |
3591559 | Kwolek | Jul 1971 | |
4104248 | Cantatore | Aug 1978 | |
4191683 | Brunetti et al. | Mar 1980 | |
4232131 | Rody et al. | Nov 1980 |
Entry |
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Imai et al, "Synthesis of Wholly Aromatic Polysulfonamides from Aromatic Chlorides and Aromatic Diamines", Journal of Polymer Science:Polymer Chemistry Edition, vol. 17, No. 5, (May), 1483-1491, (1979). |
PCT International Publication No. WO 81/01706, published Jun. 25, 1981. |
Hackh's Chem. Dictionary, 4th ed. (1969), p. 473. |