The invention is related to a colorant composition used for the color layer in a colored contact lens. The colorant composition improves the adhesion of the colorant to the surface of the contact lens and provides more hydrophilicity and biocompatibility. The colorant composition for the color layer comprises at least one hydrophilic monomer, an adhesive resin, a film-forming agent and a polydopamine-modified colorant.

A polymerizable composition suitable for use in producing molded articles that can maintain a high refractive index, and can be prevented from cracking, peeling from a support, and dimensional changes due to a high-temperature thermal history. A polymerizable composition including (a) 100 parts by mass of a specific reactive silsesquioxane compound, (b) 10 to 500 parts by mass of a specific fluorene compound, and (c) 0.1 to 50 parts by mass of a polymer having a weight average molecular weight of 5,000 to 100,000; a cured product obtained by polymerizing the polymerizable composition; and a high-refractive-index resin lens material including the polymerizable composition.

Provided are silicone elastomer particles that have higher oil absorbency than conventional products and are less prone to aggregation, making the particles superior in handling workability as a cosmetic raw material and imparting a superior tactile sensation and feel during use to a cosmetic product. Specifically, silicone elastomer particles, having a structure in which at least two silicon atoms in a silicone elastomer particle are crosslinked by a divalent organic group having a partial structure formed by radical polymerization of vinyl acetate, as expressed by {CH.sub.2CH(COOCH.sub.3)}.sub.t (where t is 1 or more), as well as a use thereof, are provided. In particular, the silicone elastomer particles have a crosslinked structure that is active with respect to biodegradability. Therefore, primary particles thereof are expected to have a property of disintegrating with the generation of non-crosslinked siloxane molecules due to a decomposition reaction of microorganisms and the like in the natural world.

Provided are silicone elastomer particles that have higher oil absorbency than conventional products and are less prone to aggregation, making the particles superior in handling workability as a cosmetic raw material and imparting a superior tactile sensation and feel during use to a cosmetic product. Specifically, silicone elastomer particles, having a structure in which at least two silicon atoms in a silicone elastomer particle are crosslinked by a divalent organic group having a partial structure formed by radical polymerization of vinyl acetate, as expressed by {CH.sub.2CH(COOCH.sub.3)}.sub.t (where t is 1 or more), as well as a use thereof, are provided. In particular, the silicone elastomer particles have a crosslinked structure that is active with respect to biodegradability. Therefore, primary particles thereof are expected to have a property of disintegrating with the generation of non-crosslinked siloxane molecules due to a decomposition reaction of microorganisms and the like in the natural world.

Provided are a laminated material used for a medical lubricating member, including a base material a, and a layer b which is disposed on the base material a and contains a polymer having a polysiloxane structure, in which the polymer contains an acrylic acid component, an acrylic acid ester component, an acrylamide component, and/or a styrene component as a constituent component, and the polymer contains a hydroxy group, a carboxy group, an amino group, an isocyanate group, an oxazoline ring, an epoxy group, a vinyl group, an ethynyl group, a sulfanyl group, an azide group, a trialkoxysilyl group, and/or an acid anhydride structure in a molecule; a medical lubricating member formed of this laminated material; and a medical device using this medical lubricating member.

A novel imprint material and film produced from the material, on which a pattern is transferred. An imprint material having: a component (A); a component (B); a component (C); and a component (D), wherein, (A): a compound of Formula (1), Formula (2), or Formula (3): ##STR00001##
wherein, X is C.sub.1-5 linear alkylene, R.sup.1 is H or CH.sub.3; each of R.sup.2, R.sup.3, and R.sup.4 is independently H, CH.sub.3, or C.sub.2H.sub.5; and the sum of the number of carbon atoms on R.sup.2, R.sup.3, and R.sup.4 is 0 to 2; (B): a silsesquioxane compound having a repeating unit of Formula (4), and having two or more polymerizable groups of Y; (C): a silicone compound having a repeating unit of Formula (5), and having two polymerizable groups on its ends: ##STR00002##
wherein, each of R.sup.6 and R.sup.7 is independently C.sub.1-3 alkyl; R.sup.5 is C.sub.1-3 alkylene; and k is 0 to 3; and (D): photopolymerization initiator.

A novel imprint material and film produced from the material, on which a pattern is transferred. An imprint material having: a component (A); a component (B); a component (C); and a component (D), wherein, (A): a compound of Formula (1), Formula (2), or Formula (3): ##STR00001##
wherein, X is C.sub.1-5 linear alkylene, R.sup.1 is H or CH.sub.3; each of R.sup.2, R.sup.3, and R.sup.4 is independently H, CH.sub.3, or C.sub.2H.sub.5; and the sum of the number of carbon atoms on R.sup.2, R.sup.3, and R.sup.4 is 0 to 2; (B): a silsesquioxane compound having a repeating unit of Formula (4), and having two or more polymerizable groups of Y; (C): a silicone compound having a repeating unit of Formula (5), and having two polymerizable groups on its ends: ##STR00002##
wherein, each of R.sup.6 and R.sup.7 is independently C.sub.1-3 alkyl; R.sup.5 is C.sub.1-3 alkylene; and k is 0 to 3; and (D): photopolymerization initiator.

Provided is a UV curable composition containing a silicon atom, that allows easy adjustment of the mechanical properties of the molded product obtained by curing, and excellent workability when applied to a substrate, even as a solvent-free type. The UV curable composition comprises: (A) 5 to 95 parts by mass of a compound having one or more acryloxy group in a molecule; and (B) 95 to 5 parts by mass of one or more type of organopolysiloxane without a UV curable functional group selected from (B1) and (B2); (B1) organopolysiloxane having three or more alkenyl groups in one molecule and no UV curable functional groups; (B2) organopolysiloxane having two or more alkenyl groups in one molecule but not having a UV curable functional group. The composition is substantially free of organic solvents, and the viscosity of the entire-composition measured at 25? C. using an E-type viscometer is 500 mPa.Math.s or less.

The present invention provides a photochromic curable composition capable of providing a cured product excellent in appearance, a photochromic optical article including the cured product, and a method for producing the same. According to an embodiment, there is provided a photochromic curable composition including (A) a siloxane having an acyclic polysiloxane bond and at least one of a radically polymerizable group and a group reactive with a radically polymerizable group, (B) a radically polymerizable monomer component, and (C) a photochromic compound.

The present invention provides a photochromic curable composition capable of providing a cured product excellent in appearance, a photochromic optical article including the cured product, and a method for producing the same. According to an embodiment, there is provided a photochromic curable composition including (A) a siloxane having an acyclic polysiloxane bond and at least one of a radically polymerizable group and a group reactive with a radically polymerizable group, (B) a radically polymerizable monomer component, and (C) a photochromic compound.