Coated abrasive binder containing ternary photoinitiator system
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United States of America Patent
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Apr 5, 1988
Grant Date -
N/A
app pub date -
Apr 2, 1987
filing date -
Apr 2, 1987
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Coated abrasive binders made from a photocurable addition-polymerizable composition containing a free-radically-polymerizable monomer and a photoinitiator system containing (i) an arylidonium salt, (ii) a sensitizing compound, and (iii) an electron donor having an oxidation potential that is greater than zero and less than or equal to that of p-dimethoxybenzene (1.32 volts vs. S.C.E.). The binders cure rapidly and deeply under ultraviolet or visible light, even when filled with large amounts of mineral grain or with coarse grades of minerals.
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