Para-dialkylaminobenzoic acid esters of the formula:
Where R is methyl or ethyl and n= 1 or 2 are described. These compounds are potent photoactivators especially for photoinitiators of the substituted thioxanthone type. All the compounds of the invention are liquids at temperature down to O°C thus markedly facilitating compounding. Rapidly curing photocurable compositions e.g. film of TiO2 pigmented photocurable resins can be formulated such as can be used as or in printing inks.
                            式中的对二烷基
氨基
苯甲酸酯:
其中 R 为甲基或乙基,n= 1 或 2。这些化合物是强效光活化剂,尤其适用于取代的
硫杂
蒽酮类型的光
引发剂。本发明的所有化合物在低至 O°C 的温度下均为液体,从而大大方便了配制。可配制出快速固化的光固化组合物,如 TiO2 
颜料光固化
树脂薄膜,可用作印刷油墨或在印刷油墨中使用。