碱土金属锰复合氧化物红外反射颜料 US 6416868

US Patent 6416868,  Alkaline earth-manganese oxide pigments

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碱土锰氧化物被用作颜料。碱土锰氧化物颜料是最好的配方MexMnOy，至少有一个由金属钙，锶，钡，镁等元素，x是从0.01到0.99，而y是大于或等于x+1和小于或等于x+2。颜料可以作为着色剂，也有增强的反射特性，特别是在红外区，并可以降低红外热积聚。这些着色剂可以加入如油漆，油墨，塑料，玻璃，陶瓷及类似材料，用于物体着色或涂料应用。该专利还涵盖了这些颜料的生产。

Alkaline earth-manganese oxides are used as pigments. The alkaline earth-manganese oxide pigments are preferably of the formula Me_xMnO_y, where Me is at least one metal selected from Ca, Sr, Ba and Mg, x is from 0.01 to 0.99, and y is greater than or equal to x+1 and less than or equal to x+2. The pigments are useful as colorants, and also possess improved reflectance characteristics, particularly in the IR region, and may reduce IR-induced heat buildup. These colorants can be used to form colored objects, or coat objects when they are either added into or applied onto materials such as paints, inks, plastics, glasses, ceramics and the like. The patent also covers the production of these pigments. 

2008 红外反射无机颜料专利综述 Infrared Reflective Inorganic Pigments

http://www.bentham.org/cheng/samples/cheng%201-1/Vinod%20C.%20Malshe.pdf

Infrared Reflective Inorganic Pigments
Ashwini K. Bendiganavale and Vinod C. Malshe*
(Retd) Prof. Paints Technology, University Institute of Chemical Technology, Matunga, Mumbai, 400019, India

Abstract: Solar energy is essential for human race. It spreads itself thin on the entire surface of the globe. The large buildings, which are now essential for the world’s growing population, need to be made comfortable for its residents. In certain parts of the year these radiations are not required for the comfort of the residents. If the buildings are allowed to receive these radiations, the expenditure of cooling is excessive. Coatings that reflect the infrared radiation in the near IR region responsible for heat from the solar radiation are formulated with special pigments. In the present paper, patents
devoted to preparation of these pigments have been reviewed. Some research work carried out at University Institute of Chemical Technology has also been included. It has been found that there are no theories to predict the infrared reflectivity of a pigment and the best way to find one is to scan the available pigments for their IR reflectivity.