Thermally stable cationic photocurable compositions
AssigneeBASF SE
InventorKarsten Rinker
Life of this patent
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Abstract
The invention relates to a cationic photocurable composition comprising at least one cationically polymerizable compound, at least one onium salt photoinitiator, at least a moisture scavenger, and at least a stabilizer selected from the group consisting of sterically hindered nitroxyl stabilizers, sterically hindered phenolic antioxidants, organic phosphorous stabilizers and mixtures thereof.
Claims17
A cationic photocurable composition comprising
- at least one cationically polymerizable compound,
- at least one onium salt photoinitiator,
- at least one moisture scavenger, and
- at least one stabilizer selected from the group consisting of sterically hindered nitroxyl stabilizers, sterically hindered phenolic antioxidants, organic phosphorous stabilizers and mixtures thereof.
A composition according to claim, 1 wherein the stabilizer is a sterically hindered nitroxyl compound.
A cationic photoinitiator composition comprising
- at least one onium salt photoinitiator;
- at least one moisture scavenger;
- and
- at least one stabilizer selected from the group consisting of sterically hindered nitroxyl stabilizers, sterically hindered phenolic antioxidants, organic phosphorous stabilizers and mixtures thereof.
A method for the photopolymerisation or crosslinking of a composition comprising
- at least one cationically polymerizable compound,
- at least one onium salt photoinitiator,
- at least one moisture scavenger, and
- at least one stabilizer selected from the group consisting of sterically hindered nitroxyl stabilizers, sterically hindered phenolic antioxidants, organic phosphorous stabilizers and mixtures thereof,
- characterized in that the composition is subjected to radiation having a wavelength in the range of 200 nm to 600 nm.
Dependencies are inferred from the claim text.