A chromene compound having at least one indenonaphthopyran moiety which has a group forming a spiro ring together with the 13-position carbon atom and further an oligomer chain group selected from a polyalkylene oxide oligomer chain group having at least three recurring units and a polyester oligomer chain group having at least three recurring units, represented by the following formula and having reduced matrix dependence:
wherein R
1
and R
2
are each a group which may have an oligomer chain group, the ring Z bonded to the 13-position carbon atom of the chromene compound is a Spiro ring group, and R
3
and R
4
are each an aryl group or heteroaryl group which may have an oligomer chain group.
Preferably, the chromene compound has at least one oligomer chain group in the molecule.
具有至少一个印苯并
萘吡喃基团的
色酮化合物,其中该基团与13位碳原子形成螺环,并且进一步具有从至少三个重复单元中选择的聚烷氧基寡聚物链基团和聚酯寡聚物链基团中的一个寡聚物链基团,由下式表示并具有降低的矩阵依赖性:
其中R1和R2是各自可能具有寡聚物链基团的基团,与
色酮化合物的13位碳原子键合的环Z是螺环基团,而R3和R4是各自可能具有寡聚物链基团的芳基或杂环基团。最好,该
色酮化合物在分子中至少具有一个寡聚物链基团。