公开(公告)号：US12071355B2

公开(公告)日：2024-08-27

申请号：US17293208

申请日：2019-11-28

Applicant: MATHYM

Inventor： Amandine Venier ,  Erik Camposilvan ,  Miguel Comesana-Hermo

IPC: C01G25/02

CPC classification number: C01G25/02 ,  C01P2004/04 ,  C01P2004/64 ,  C01P2006/22

Abstract: This invention relates to a process for preparing nanoparticles of zirconium dioxide, ZrO2, by hydrothermal treatment of a zirconium IV compound in the presence of water, at a pH below 7, and at least one amino acid comprising at least 4 carbon atoms, said amino acid exhibiting an acid function to amine function ratio greater than or equal to 1. The invention also relates to zirconium dioxide nanoparticles having a visible transmittance greater than or equal to 20% at 400 nm and greater than or equal to 95% at 800 nm measured in water at a concentration of 40% by weight.