The present invention pertains to a reversibly thermochromic system comprising a substituted or an unsubstituted 6,11-dihydroxy-naphthacene-5,12-dione and a base and to a reversibly thermochromic composition comprising the reversibly thermochromic system and a carrier material and to novel substituted 6,11-dihydroxy-naphthacene-5,12-diones.
本发明涉及一种可逆热致变色系统,包括取代或未取代的6,11-二羟基
萘并[5,12-二酮]和一种碱,以及一种可逆热致变色组合物,包括可逆热致变色系统和载体材料,还涉及新型的取代的6,11-二羟基
萘并[5,12-二酮]。