Ultraviolet light absorbent
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United States of America Patent
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Feb 10, 1998
Grant Date -
N/A
app pub date -
Feb 20, 1996
filing date -
Feb 21, 1995
priority date (Note) -
Expired
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Abstract
An ultraviolet light absorbent comprising an ester mixture derived from esterification of pentaerythritol or trimethylolpropane and a saturated branched-chain fatty acid with a carbon number of 8-18 and ortho- or paramethoxycinnamic acid in a specific ratio. The ultraviolet light absorbent with prescribed ultraviolet light absorbing power has a moderate viscosity and can be handled and worked without inconvenience and/or difficulty.
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