Photocurable compositions
AssigneeGeneral Electric Company
InventorsJames V. Crivello, Julia L. Lee
Life of this patent
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Abstract
Photocurable compositions are provided which can be cured with ultraviolet light at a wave length greater than 300 nm. The photocurable compositions are based on the use of cationically polymerizable organic materials, for example, an epoxy resin and a photoinitiator in the form of a dialkylphenacyl sulfonium salt or hydroxyaryldialkyl sulfonium salt which have been sensitized with a particular dye sensitizer.
Claims7
Compositions which are photocurable at wave lengths greater than 300 nm comprising a cationically polymerizable organic material and an effective amount of a photoinitiator having the formula ##STR9## sensitized with an effective amount of a sensitizer selected from perylene, anthracene, mixture thereof, phenothiazene, where R is a member selected from C.sub.(6-13) monovalent aromatic organic radicals and substituted C.sub.(6-13) monovalent aromatic organic radicals, R.sup.1 is a monovalent radical selected from hydrogen, C.sub.(1-8) alkyl and mixtures thereof, R.sup.2 is a C.sub.(1-13) monovalent organic radical, or a divalent organic radical which can form a cyclic structure selected from the group consisting of ##STR10## M is a metal or metalloid, Q is halogen and d is equal to 4-6.
Dependencies are inferred from the claim text.