| 摘要 |
An infrared absorber which comprises containing as an effective ingredient a hydroxide complex salt represented by the formula(wherein M2+ is a divalent metal, An- is an anion having a valence of n, and m, x and y are numbers respectively in the ranges of 0<=m<5, 0.01<=x<=0.5 and 0<=y<=0.5), which has a high ability to absorp infrared rays and a refractive index close to that of the resin so that it has a good dispersibility with the resins when incorporated in the resin and the shaped film therefrom is excellent in the heat insulation property and transparency so that it is suitable as an agricultural film.
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