NYACOL® offers colloidal alumina in the form of water based sols, EG sols, and spray dried powders. The alumina is in the form of pseudo-boehmite or boehmite powder with high purity and high surface area. Please refer to the product data sheets for individual product details.
NYACOL® AL20-EG is a colloidal dispersion of high purity pseudo-boehmite alumina dispersed in ethylene glycol. It has been designed to be used in PET synthesis or as a coating additive. The solid phase refractive index of the Al2O3 particles is 1.65, which is very close to PET at 1.63. AL20-EG is expected to be a highly transparent antiblocking additive in PET film.