Ultraviolet-screening and color-chaning composition and its preparing method
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United States of America Patent
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Issued Date -
Jul 1, 2004
app pub date -
Nov 12, 2003
filing date -
May 12, 2001
priority date (Note) -
Abandoned
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Abstract
Disclosed is a UV-screening and color-changing composition and its preparing method, the composition comprising spiro oxazine and spiro pyran as an optical color-changing pigment combined with an animal fat or vegetable oil, and additionally an antioxidant and a stabilizer, which composition has a higher sun protection factor (SPF) and can be used as a cosmetic or skin-protecting photo-sensitive material to increase the color-developing concentration when exposed to solar or UV radiation and to provide a cream or oil formation ready to color development or decolorization. The composition has a higher SPF number compared with the conventional skin protecting compositions and, particularly has an ability of changing in color and screening UV radiation without any irritation on the skin.
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