| 摘要 |
<p>1305970 Anthraquinone dyestuffs BAYER AG 12 Nov 1970 [12 Nov 1969] 53903/70 Heading C4P [Also in Division D1] Dyes having the general formula wherein A is alkylene optionally substituted by one or more oxygen atoms, B is an unsubstituted alkyl radical and X is a hetero atom, e.g. Q or S are specified and are used to dye synthetic and semi-synthetic fibre materials.</p> |
