| 摘要 |
PURPOSE:To prevent the generation of color irregularity or the discoloration during preservation, by containing a usually colorless or light colored color forming substance and a specific trisphenol compound. CONSTITUTION:A usually colorless or light colored color forming substance and a trisphenol compound represented by formula 1 (wherein R1, R2 and R3 are respectively independently a hydrogen atom, a methyl group or an ethyl group) are contained. As the compound represented by the formula 1, for example, 1,1,3-tris (4-hydroxyphenyl)butan is designated and can be prepared, for example, by reacting crotonaldehyde with corresponding phenols. |
