To easily obtain a novel chemical agent for marking well penetrating into a wood and to generate marked color reaction by an extremely small amt. of the marking substance to enable visual observation, by treating the wood with arylamine represented by a specific formula.
In a wood marking method, wood is treated with arylamine represented by formula I, wherein Ar is a group represented by formula II, R1 and R2 are mutually unrelated hydrogen, a C1-C18 alkyl group which may be substituted, may be interrupted in a form of an ether functional group by 1-3 oxygen atoms or interrupted by 1-3 non-adjacent C1-C4 alkylimino groups, C5-C7 cycloalkyl, C3-C18 alkenyl or phenyl which may be substituted, or R1 and R2 are a 5- or 6-membered saturated heterocylic group together with a nitrogen atom.
VAMVAKARIS CHRISTOS DR
BECK KARIN HEIDRUN DR
KRUESEMANN JULIANE
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