| 摘要 |
PCT No. PCT/GB94/01613 Sec. 371 Date Mar. 6, 1996 Sec. 102(e) Date Mar. 6, 1996 PCT Filed Jul. 27, 1994 PCT Pub. No. WO95/04704 PCT Pub. Date Feb. 16, 1995A process for preparing zinc oxide comprises introducing, into an atmosphere, an aqueous solution of a zinc salt that is thermally decomposable to zinc oxide, the atmosphere having a temperature sufficient to decompose the salt to the oxide, and recovering zinc oxide. The zinc oxide so-prepared is in the form of discrete particles which can have an average particle size of 0.08 mu m or less in diameter and a surface area of at least 12.5 m2/g and which is also free of zinc metal. The small particle size zinc oxide is particularly useful as a UV absorbing/scattering additive. |
