Molecular complex compounds of acylphosphine oxide and .alpha.-hydroxy ketones as photoinitiators

  • US 5,942,290 A
  • Filed: 08/21/1997
  • Issued: 08/24/1999
  • Est. Priority Date: 08/28/1996
  • Status: Expired due to Term
First Claim
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1. A molecular complex compound comprising a mono-, bis- or trisacylphosphine oxide compound with an α

  • -hydroxy ketone compound in crystalline form associated by way of hydrogen bonds between the hydrogen atoms of the hydroxyl groups in said hydroxy-ketone compound and oxygen atoms attached to phosphorous in said phosphine oxide compound.

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