| 摘要 |
PURPOSE:To obtain the subject composition having excellent near infrared absorptivity without instability of fading, etc., by blending specific amounts of a component composed of a copper compound and a thiourea derivative with a component composed of tungsten hexachloride and a trialkyl phosphate, etc. CONSTITUTION:The objective composition is composed of (A) 20-80wt.% component composed of (i) 1 pt.wt. one or more copper compounds selected from copper compounds expressed by the formula (R-X)nCu (R is monovalent group such as H or alkyl ; X is COO, SO4, etc.; (n) is 1-4], copper chlorophyll, sodium copper chlorophyllin and bisacetylacetonatocopper and (ii) 0.05-50 pts.wt. derivative expressed by the formula (R1 to R3 are monovalent group such as H, alkyl or 5-to 6-membered heterocyclic ring residue, with the proviso that each group may have one or more substituent groups; R1 and R2 or R2 and R3 may be linked to form a ring) and (B) 80-20wt.% component composed of (iii) 1 pt.wt. tungsten hexachloride and (iv) 0.05-10 pts.wt. trialkyl or triaryl phosphate. The total amount of the components (A) and (B) is made up to 100wt.%. |
