| 摘要 |
1,219,804. Dyeing polyacrylonitrile. BADISCHE ANILIN - SODA - FABRIK A.G. 12 June, 1968 [13 June, 1967], No. 27839/68. Heading C3P. [Also in Divisions C4 and D1] In Example 4 the dye of Formula II is dissolved in dimethylformamide and added to a solution of acrylonitrile polymer which is spun to give a blue shade.
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