Photosensitizers for free radical polymerization initiation resins and method of making the same
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United States of America Patent
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Mar 20, 2001
Grant Date -
N/A
app pub date -
Nov 19, 1999
filing date -
Nov 20, 1998
priority date (Note) -
Expired
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Abstract
A photoinitiator composition that includes (a) 1-aryl-2-alkyl-1,2-ethanedione and (b) a rigid 1,2-dione in a weight ratio of (a):(b) in a range of about 1:20 to about 20:1 is disclosed. The photoinitiator composition can be used in a photocurable dental composition in an amount sufficient to achieve a degree of double-bond conversion of at least 50%. Methods for making the photocurable dental composition are also disclosed.
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