Articles with photocurable and photocured compositions

摘要

The photocuring efficiency of a photoinitiator is increased by mixing it with an organic phosphite and an aldehyde. This mixture or photoinitiator composition can be used to cure acrylates or other photocurable compounds, particularly in an oxygen-containing environment, and the photocurable compositions can be used to form various articles.

主权项

1. An article comprising a photocurable composition that comprises a photoinitiator composition that consists essentially of at least one photoinitiator, at least one organic phosphite, at least one aldehyde; and at least one photocurable compound,
wherein: the at least one aldehyde is an alkyl or aryl aldehyde having one or more aldehyde moieties and has the formula R″—CHO wherein R″ is a substituted or unsubstituted alkyl or aryl group; the organic phosphite is present in the photoinitiator composition in a molar ratio to the aldehyde moieties of at least 1:1 and up to and including a molar ratio of 4:1; and the photoinitiator is one or more of a benzoin, aryl ketone, α-amino ketone, mono- or bis(acyl)phosphine oxide, benzoin alkyl ether, benzil ketal, phenylglyoxalic ester or derivatives thereof, per-ester, ketosulfone, phenylglyoxylate, borate, and a metallocene.