9results about "Photosensitive materials" patented technology

The present invention relates to photohardenable compositions for use in forming an object. The photohardenable compositions include a photohardenable resin component, a first photoinitiator that is activatable by exposure to light at a first wavelength and light at a second wavelength, and a second photoinitiator that is activatable by exposure to light at a third wavelength, wherein the first, second, and third wavelengths are not the same, and the third wavelength is shorter than the first wavelength and the second wavelength.

Provided is an optical article having a substrate, a primer layer generated by curing a polymerizable composition for forming the primer layer, and a photochromic layer containing a photochromic compound in this order, in which the polymerizable composition for forming the primer layer contains a component A: a polyisocyanate, a component B: a hydroxy group-containing polymerizable compound, and a component C: a polymerizable compound having a viscosity of 100 cP or less and being selected from the group consisting of (meth)acrylates and vinyl ethers.

A mask element for flexographic printing is provided. The mask element can be used for preparing a mask that has a mask image. The mask element can include: a transparent polymeric carrier sheet; a barrier layer on the transparent polymeric carrier sheet, wherein the barrier layer comprises non-crosslinked nitrocellulose; and an imaging layer on the barrier layer, wherein the imaging layer includes a non-silver halide thermally-ablatable material comprising non-crosslinked nitrocellulose, carbon black, and an infrared (IR) dye. In some aspects, the mask element further includes a transparent overcoat layer on the imaging layer. The mask can include: imaged regions in the imaging layer, wherein the imaged regions have optical apertures that are substantially devoid of the carbon black and non-crosslinked nitrocellulose thereof; and non-imaged regions in the imaging layer, wherein the non-imaged regions have the non-crosslinked nitrocellulose, carbon black, and infrared dye.

The present invention relates to photohardenable compositions and methods of forming an object, the method preferably including a photohardenable composition described herein. Preferred photohardenable compositions and methods include a photohardenable resin component, a first photoinitiator that is activatable by exposure to light at a first wavelength and light at a second wavelength, and a second photoinitiator that is activatable by exposure to light at a third wavelength, wherein the first, second, and third wavelengths are not the same, and the third wavelength is shorter than the first wavelength and the second wavelength. Preferred first photoinitators include photoswitchable photoinitiators. Preferably the second light- activated photoinitiator comprises a free-radical photoinitiator. Hardenable resin compositions and methods of forming an object including the hardenable resin composition are also disclosed.

A compound represented by formula (1). [In formula (1), R represents an alkyl group having 1-5 carbon atoms, X represents a halogen element or an alkoxy group, n1 represents an integer of 0-5, and n2 represents an integer of 1 or more]

To provide a photosensitive surface treatment agent.SOLUTION: A photosensitive surface treatment agent includes a compound expressed with a following formula (M1) (in the formula (M1), R1 denotes a hydrogen atom, a tert-butoxycarbonyl group or an ester-based protective group, R2 denotes a hydrogen atom or an alkyl group having 1-6 carbon atoms, m denotes an integer of 1 or larger, and X denotes a halogen atom or an alkoxy group. [Chem.1].SELECTED DRAWING: None

Carbon black, characterized in that the content of polycondensed aromatic hydrocarbons, measured according to the PAH method, is less than 5 ppm and the STSA surface area is < 90 m² 2 / g, the toluene extract is less than 0.04%.

Compounds useful as fluorescent or colored dyes are disclosed. The compounds have the following structure (I), including salts thereof, wherein R1a, R1b, R1c, R1d, R1e, R1f, R2a, R2b, R2c, R2d, R2e, R2f, R2g, R2h, R2i, R2j, x and y are as defined herein. Methods associated with preparation and use of such compounds are also provided.