ULTRAVIOLET SCATTERING AGENT AND APPLICATION THEREFOR
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United States of America Patent
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Nov 11, 2014
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Nov 14, 2013
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Abstract
Provided is an ultraviolet scattering agent characterized by comprising at least one type of elliptical or needle-like polymer particle A, wherein (1) the average (LAV) of the long axis (L) in a two-dimensional projection diagram obtained by radiating light from a direction perpendicular to the long-axis direction is 0.1 to 80 μm, (2) the average (DAV) of the short axis (D) in a two-dimensional projection diagram obtained by radiating light from a direction perpendicular to the long-axis direction is 0.05 to 40 μm, and (3) the average (PAV) of the aspect ratio (L/D) calculated from the long axis (L) and the short axis (D) is 2 to 30.
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