초록 ▼

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

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.

대표청구항 ▼

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 [Figure] sensitized with an effective amount of a sensitizer selected from perylene, anthracene, mixture the

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 [Figure] sensitized with an effective amount of a sensitizer selected from perylene, anthracene, mixture thereof, phenothiazene, where R is a member selected from C(6-13) monovalent aromatic organic radicals and substituted C(6-13) monovalent aromatic organic radicals, R1 is a monovalent radical selected from hydrogen, C(1-8) alkyl and mixtures thereof, R2 is a C(1-13) monovalent organic radical, or a divalent organic radical which can form a cyclic structure selected from the group consisting of [Figure] M is a metal or metalloid, Q is halogen and d is equal to 4-6.