Granular form of a mixture of a nickel-quencher and a benzophenone and process for its preparation
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United States of America Patent
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Jun 11, 2002
Grant Date -
N/A
app pub date -
Aug 23, 2000
filing date -
Apr 9, 1998
priority date (Note) -
Expired
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Abstract
Granular form of a mixture comprising: (a) a nickel-quencher corresponding to [2,2'-thio-bis(4-t-octyl-phenolate)-n-butylamine Nickel (II)]; (b) a 2-hydroxy-4-alkyloxybenzophenone corresponding to 2-hydroxy-4-n-octyloxybenzophenone; characterized in that it has two diffraction lines at angles 2.theta.=17.593 and 2.theta.=22.023 in the X-Ray diffraction spectrum from powders. The above granular form can be used as a light stabilizer for agricultural films based on polyolefins or olefinic copolymers.
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