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Phosphate and product obtained from the same 发明授权

2023-01-04 4130 46K 0

专利信息

申请日期 2025-07-12 申请号 JP11001119
公开(公告)号 JP3971047B2 公开(公告)日 2007-09-05
公开国别 JP 申请人省市代码 全国
申请人 RHONE POULENC CHIMIE
简介 The invention relates to new, simple or mixed, rare-earth metal phosphates, with improved particle size characteristics, which are more particularly characterised in that they have a mean particle size of between 1 and 20 microns, preferably of between 2 and 6 microns, with a dispersion index below 0.5, preferably below 0.4. These phosphates are obtained according to a new process based on a precipitation by phosphate ions, at a pH which is constant and less then 2, of a solution containing soluble salts of the rare-earth metal(s). The phosphates according to the invention are suitable as luminophores or as precursors thereof.


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