| 摘要 |
1,257,950. Colouring P.V.C. FARBWERKE HOECHST A.G. 10 Nov., 1969 [9 Nov., 1968], No. 54897/69. Heading C3P. [Also in Division C4] Plasticized P.V.C. is coloured with dyestuffs of the formula wherein X is H, halogen, CH 3 , CF 3 , OCH 3 or NO 2 ; Y is H or halogen; and R is H, halogen, CH 3 or OCH 3 . |
