C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 229/62 (2006.01) C07C 227/08 (2006.01)
Patent
CA 2096845
2096845 9209558 PCTABS00013 Disclosed is an environmentally and economically improved method for the preparation of 2,5-di(phenylamino)terephthalic acid and its dialkyl esters of general formula (I), in which R is a hydrogen atom or a methyl group and R' is a hydrogen atom or a methyl or ethyl group.
Arndt Otto
Fuchs Hermann
Gilb Walter
Arndt Otto
Fetherstonhaugh & Co.
Fuchs Hermann
Gilb Walter
Hoechst Aktiengesellschaft
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