Abstract: Provided is a photosensitive composition containing an oxime-ester photoinitiator. The oxime-ester photoinitiator is a compound as shown in formula (I). The composition has the advantages of high curing speed, small exposure dose, less pollution, energy saving, almost no residue defect, etc., and the thickness, clarity and pattern integrity of a cured film thereof are all excellent.

Abstract: This invention discloses a novel cationic photoinitiator and a preparation method and use thereof. The cationic photoinitiator has a structure as represented by general formula (I) below. It can match a longer absorption wavelength in the process of application and has an outstanding photosensitive property, and has characteristics of no proneness to migration and good yellowing resistance.

Abstract: A fluorene-based photoinitiator, a preparation method thereof, a photocurable composition having the same, and use thereof in the field of photocuring are disclosed. In some embodiments, the fluorene-based photoinitiator has a structure represented by Formula I, wherein X is -A-(X?)n, wherein A is selected from a heteroatom which is selected from O, N, or S, X? is selected from a C1-C20 linear alkyl group, a C1-C20 branched alkyl group, a C3-C8 cycloalkyl group, a C1-C10 alkyl group substituted with a C3-C8 cycloalkyl group or one or more of carbon atoms in X? are substituted with a heteroatom, and n is 1 or 2; and R4 is a hydroxy group or a N-morpholinyl group. In some embodiments, the fluorene-based photoinitiator comprises a structure represented by Formula II.

Abstract: A group of polyfunctional oxetane-based compounds having a structure as represented by general formula (I) or a product obtained by a reaction between a compound of general formula (I) and epichlorohydrin, an ester compound, or an isocyanate compound. When these polyfunctional oxetane-based compounds are used as cation polymerizable monomers in combination with an epoxy compound, the curing speed is high, and the cured product has highly excellent hardness, flexibility, adherence, and heat resistance.

Abstract: The present disclosure provides a sensitizer for UV-LED photocuring, having a chemical structure as represented by formula (I). This sensitizer has a very good adaptability to existing photoinitiators, can significantly improve the curing efficiency under the irradiation of a UV-LED light source when used in a photocurable composition, and has excellent application properties.

Abstract: A carbazolyl ketoxime ester type photoinitiator having a structure represented by the formula (I) is disclosed. This photoinitiator has excellent application performance and extremely high photosensitive property, and in particular under exposure lamp sources such as LED, LDI, etc., and it exhibits very high photosensing activity, which is obviously superior to the current products.

Abstract: Provided is a photosensitive composition containing an oxime-ester photoinitiator. The oxime-ester photoinitiator is a compound as shown in formula (I). The composition has the advantages of high curing speed, small exposure dose, less pollution, energy saving, almost no residue defect, etc., and the thickness, clarity and pattern integrity of a cured film thereof are all excellent.

Abstract: A bisoxime ester photoinitiator as represented by general formula (I). By introducing a bisoxime ester group and a cycloalkylalkyl group into the chemical structure, this photoinitiator not only has excellent performance in aspects of storage stability, photosensitivity, developability, pattern integrity, and the like, but also exhibits obviously improved photosensitivity and thermal stability compared to similar photoinitiators.

Abstract: This present invention discloses a nitro-containing bisoxime ester photoinitiator having a structure represented by general formula (I). This photoinitiator has excellent application performances in terms of storage stability, photosensitivity, developability, pattern integrity, etc., and it has good adaptability to single-wavelength UV-LED light sources and exhibits a photosensitive property, which is obviously superior to those of existing photoinitiators, under the irradiation of UV-LEDs.

Abstract: This present invention discloses a nitro-containing bisoxime ester photoinitiator having a structure represented by general formula (I). This photoinitiator has excellent application performances in terms of storage stability, photosensitivity, developability, pattern integrity, etc., and it has good adaptability to single-wavelength UV-LED light sources and exhibits a photosensitive property, which is obviously superior to those of existing photoinitiators, under the irradiation of UV-LEDs.

Abstract: A bisoxime ester photoinitiator as represented by general formula (I). By introducing a bisoxime ester group and a cycloalkylalkyl group into the chemical structure, this photoinitiator not only has excellent performance in aspects of storage stability, photosensitivity, developability, pattern integrity, and the like, but also exhibits obviously improved photosensitivity and thermal stability compared to similar photoinitiators.

Abstract: A photocurable acrylate composition, containing a compound of formula (I) as a photoinitiator and the components adapted to the photoinitiator. The photocurable composition has very good storage stability and very high light sensitivity, can be cross-linked and cured at a very low exposure dose, and has a very good curing effect; a film made from the composition has a smooth edge, no defect and scum, and good integrity throughout the whole pattern, and is a high-hardness resist film, and an optical filter made therefrom has high optical transparency and no light leakage.

Abstract: A photocurable acrylate composition, containing a compound of formula (I) as a photoinitiator and the components adapted to the photoinitiator. The photocurable composition has very good storage stability and very high light sensitivity, can be cross-linked and cured at a very low exposure dose, and has a very good curing effect; a film made from the composition has a smooth edge, no defect and scum, and good integrity throughout the whole pattern, and is a high-hardness resist film, and an optical filter made therefrom has high optical transparency and no light leakage.

Abstract: A carbazolyl ketoxime ester type photoinitiator having a structure represented by the formula (I) is disclosed. This photoinitiator has excellent application performance and extremely high photosensitive property, and in particular under exposure lamp sources such as LED, LDI, etc., and it exhibits very high photosensing activity, which is obviously superior to the current products.