发明授权
US07763359B2 Aluminum phosphate, polyphosphate and metaphosphate particles and their use as pigments in paints and method of making same
有权
磷酸铝，多磷酸盐和偏磷酸盐颗粒及其在油漆中的用途及其制备方法
- 专利标题： Aluminum phosphate, polyphosphate and metaphosphate particles and their use as pigments in paints and method of making same
- 专利标题（中）： 磷酸铝，多磷酸盐和偏磷酸盐颗粒及其在油漆中的用途及其制备方法
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申请号： US11364798申请日： 2006-02-27
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公开(公告)号： US07763359B2公开(公告)日： 2010-07-27
- 发明人: Fernando Galembeck , Joäo de Brito
- 申请人： Fernando Galembeck , Joäo de Brito
- 申请人地址： BR São Paulo BR Campinas
- 专利权人： Bunge Fertilizantes S.A.,Universidade Estadual de Campinas
- 当前专利权人： Bunge Fertilizantes S.A.,Universidade Estadual de Campinas
- 当前专利权人地址： BR São Paulo BR Campinas
- 代理机构： Connolly Bove Lodge & Hutz LLP
- 优先权： BR10403713-8 20040830
- 主分类号： B32B15/16
- IPC分类号： B32B15/16 ; C01B15/16 ; C08K3/32
摘要：
An aluminum phosphate composition comprising aluminum phosphate, aluminum polyphosphate, aluminum metaphosphate, or a mixture thereof. The composition may be characterized by, when in powder form, having particles wherein some of the particles have at least one or more voids per particle. In addition, the composition is characterized by exhibiting two endothermic peaks in Differential Scanning Calorimetry between about 90 degrees to about 250 degrees Celsius. The composition is also characterized by, when in powder form, having a dispersibility of at least 0.025 grams per 1.0 gram of water. The composition is made by a process comprising contacting phosphoric acid with aluminum sulfate and an alkaline solution to produce an aluminum phosphate based product; and optionally calcining the aluminum phosphate, polyphosphate or metaphosphate based product at an elevated temperature. The composition is useful in paints and as a substitute for titanium dioxide.
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