- 专利标题: Aluminum phosphates, compositions comprising aluminum phosphate, and methods for making the same
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申请号: US13448271申请日: 2012-04-16
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公开(公告)号: US09611147B2公开(公告)日: 2017-04-04
- 发明人: Raymond E. Foscante , Neil Maynard Johnson , Yucel Burdurlu Tavolara , Douglas Malcolm Harless , Melanie Astrid Micha-Schama
- 申请人: Raymond E. Foscante , Neil Maynard Johnson , Yucel Burdurlu Tavolara , Douglas Malcolm Harless , Melanie Astrid Micha-Schama
- 申请人地址: US NY White Plains
- 专利权人: Bunge Amorphic Solutions LLC
- 当前专利权人: Bunge Amorphic Solutions LLC
- 当前专利权人地址: US NY White Plains
- 代理机构: Snell & Wilmer L.L.P.
- 主分类号: C01B25/36
- IPC分类号: C01B25/36 ; C09C1/40
摘要:
APs are made by binary condensation via base-to-acid or acid-to-base routes. In the base-to-acid route, an aluminum hydroxide slurry is added to phosphoric acid that reacts to produce an aluminum phosphate condensate. In the acid-to-base route, phosphoric acid is added to an aluminum hydroxide slurry that reacts to produce an aluminum phosphate condensate. In an alternative base-to-acid route, an acidic aluminum phosphate is first made by adding phosphoric acid to a first amount of aluminum hydroxide slurry, and such acidic aluminum phosphate is added to a remaining amount of aluminum hydroxide slurry to react and produce an aluminum phosphate condensate. The reactions can be controlled to form an in-situ layered aluminum phosphate. So-formed APs can be amorphous, crystalline, or a combination thereof, and have low oil absorption and surface area, making them particularly useful in such end-use applications as extender pigments in coating compositions, replacing up to 70 wt % of TiO2.