. . . . . . . . "Metal oxides, for example such as titanium oxide (TiO2), zinc oxide (ZnO), zirconium oxide (ZrO2), antimony oxide (Sb2 O3) and compounds thereof, are effective high reflective infrared reflecting metal oxide particles, since these particles possess an optimum size, in a range between about 1/3(??) to about 1/2(??) for desired infrared radiation, and an enlarged volume of high reflective infrared r" . .