Described are polymerizable high energy light absorbing compounds. The compounds absorb various wavelengths of ultraviolet and/or high energy visible light and are suitable for incorporation in various products, such as biomedical devices and ophthalmic devices.

Described are polymerizable high energy light absorbing compounds. The compounds absorb various wavelengths of ultraviolet and/or high energy visible light and are suitable for incorporation in various products, such as biomedical devices and ophthalmic devices.

Provided is a polyorganosiloxane-containing polymer which makes it possible to obtain a molded product exhibiting excellent flame retardance without significantly degrading the impact resistance characteristics in a case where the polyorganosiloxane-containing polymer is added to a resin. The polyorganosiloxane-containing polymer according to the present invention contains alkali metal atoms of 100 ppm by mass or more and has a mass average particle diameter Dw of 350 nm or more.

Provided is a polyorganosiloxane-containing polymer which makes it possible to obtain a molded product exhibiting excellent flame retardance without significantly degrading the impact resistance characteristics in a case where the polyorganosiloxane-containing polymer is added to a resin. The polyorganosiloxane-containing polymer according to the present invention contains alkali metal atoms of 100 ppm by mass or more and has a mass average particle diameter Dw of 350 nm or more.

The present disclosure relates to a photopolymer composition including a polymer matrix or a precursor thereof having a predetermined chemical structure; a photoreactive monomer; and a photoinitiator, a hologram recording medium, an optical element and a holographic recording method using the same.

The invention relates to a process of processing a radiation-curable composition with an additive-manufacturing technique comprising a radiation-curing step, the radiation-curable composition comprising mercapto-functional Component A comprising at least three mercapto moieties, crosslinker Component B with at least three vinyl or allyl moieties, photo-initiator(s) Component C for initiating a curing reaction between Component A and Component B, wherein the radiation-curable composition does not comprise urethane (meth)acrylate oligomers in an amount of more than 4 wt. % with respect to the whole composition. 3-dim articles which can be produced are typically transparent and have adequate mechanical properties. The radiation-curable composition is in particular useful for producing clear-tray aligners for dental and orthodontic purposes.

The invention relates to a process of processing a radiation-curable composition with an additive-manufacturing technique comprising a radiation-curing step, the radiation-curable composition comprising mercapto-functional Component A comprising at least three mercapto moieties, crosslinker Component B with at least three vinyl or allyl moieties, photo-initiator(s) Component C for initiating a curing reaction between Component A and Component B, wherein the radiation-curable composition does not comprise urethane (meth)acrylate oligomers in an amount of more than 4 wt. % with respect to the whole composition. 3-dim articles which can be produced are typically transparent and have adequate mechanical properties. The radiation-curable composition is in particular useful for producing clear-tray aligners for dental and orthodontic purposes.

The problem to be addressed by the invention is to provide a polymerizable composition for three-dimensional modeling used for producing three-dimensional models having high flexural modulus and impact strength, as well as high dimensional accuracy, and a production method for the composition. In order to solve the problem, the polymerizable composition for three-dimensional modeling contains an inorganic filler with an aspect ratio of 5 or greater, a dispersant, a photopolymerizable compound, and a thermally polymerizable compound.

The problem to be addressed by the invention is to provide a polymerizable composition for three-dimensional modeling used for producing three-dimensional models having high flexural modulus and impact strength, as well as high dimensional accuracy, and a production method for the composition. In order to solve the problem, the polymerizable composition for three-dimensional modeling contains an inorganic filler with an aspect ratio of 5 or greater, a dispersant, a photopolymerizable compound, and a thermally polymerizable compound.

The problem to be addressed by the invention is to provide a polymerizable composition for three-dimensional modeling used for producing three-dimensional models having high flexural modulus and impact strength, as well as high dimensional accuracy, and a production method for the composition. In order to solve the problem, the polymerizable composition for three-dimensional modeling contains an inorganic filler with an aspect ratio of 5 or greater, a dispersant, a photopolymerizable compound, and a thermally polymerizable compound.