Method of decreasing the UV light degradation of polymers
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United States of America Patent
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Jun 9, 2009
Grant Date -
Oct 6, 2005
app pub date -
May 6, 2005
filing date -
Nov 22, 2002
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Abstract
A method of decreasing the UV light degradation of a UV-light degradable polymer comprising adding to said polymer an effective amount of a compound of formula (IX):are the same or different and are selected from the group consisting of substituted diphenylmethylene, unsubstituted diphenylmethylene, substituted 9H-fluorene, and unsubstituted 9H-fluorene; t and u are each in the range of 1 to 100; s is in the range of 0 to 100; and a, b, c, and d are each in the range of 0 to 4.
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