lithopone raw material manufacturers

This article discusses the discovery of phosphorescent lithopone on watercolor drawings by American artist John La Farge dated between 1890 and 1905 and the history of lithopone in the pigment industry in the late 19th and early 20th centuries. Despite having many desirable qualities for use in white watercolor or oil paints, the development of lithopone as an artists' pigment was hampered by its tendency to darken in sunlight. Its availability to, and adoption by, artists remain unclear, as colormen's trade catalogs were generally not explicit in describing white pigments as containing lithopone. Further, lithopone may be mistaken for lead white during visual examination and its short-lived phosphorescence can be easily missed by the uninformed observer. Phosphorescent lithopone has been documented on only one other work-to-date: a watercolor by Van Gogh. In addition to the history of lithopone's manufacture, the article details the mechanism for its phosphorescence and its identification aided by Raman spectroscopy and spectrofluorimetry.

...

The primary function of titanium dioxide in paint is its ability to provide superior opacity. By effectively hiding the underlying surface, it allows fewer coats of paint to achieve the desired color intensity and uniformity. This not only reduces material costs but also shortens application time, making it an economical choice for paint manufacturers. Additionally, titanium dioxide's refractive index contributes to the brightness and cleanliness of the paint film, ensuring that colors remain vibrant and true over time.

...
{随机栏目} 2025-08-16 06:25 1094
  • In conclusion, the price per kilogram of titanium dioxide varies depending on several factors, including the production method, quality, purity, and demand. High-quality titanium dioxide produced through the chloride process tends to be more expensive than lower-quality titanium dioxide produced through the sulfate process. However, the sulfate process is more commonly used due to its lower cost and higher yield. As an essential pigment in various industries, titanium dioxide continues to play a crucial role in our daily lives.

    {随机栏目} 2025-08-16 05:34 438