US 2026/0308360 A1Published application

Photocurable composition, cured product of same, and coated article

AssigneeShin-Etsu Chemical Co., Ltd.

InventorsRyosuke YOSHII, Koichi HIGUCHI, Kazuyuki MATSUMURA

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Abstract

Provided is a photocurable composition comprising (A) surface-modified inorganic particles in which 1 to 30 parts by mass of at least one of an organosilicon compound represented by formula (1) and a hydrolysis product and a condensation product thereof is chemically bound to 100 parts by mass of inorganic particles and which have a median diameter of 1 to 60 nm in a volume-based particle size distribution, (B) a bifunctional (meth)acrylate, (C) a trifunctional (meth)acrylate and (D) a photoradical initiator. in which the blend amount of the component (A) is 10 to 35% by mass, and the total blend amount of the components (A), (B) and (C) is 70% by mass or more. (In the formula, R1 represents a hydrogen atom or the like; R2 represents an alkylene group; R3 represents an alkyl group or the like; R4 represents an alkoxy group or the like; and n represents an integer of 1 to 3.)

Claims9

Dependent claims

A photocurable composition comprising:

(A) surface-modified inorganic particles which are obtained by chemically bonding from 1 to 30 parts by weight of at least one compound selected from organosilicon compounds of formula (1) below
(wherein R1 is a hydrogen atom or a methyl group, R2 is an alkylene group of 1 to 20 carbon atoms, each R3 is independently a hydrogen atom or an alkyl group of 1 to 8 carbon atoms, each R4 is independently a hydroxyl group, an alkoxy group of 1 to 6 carbon atoms or a halogen atom, and n is an integer from 1 to 3) and hydrolyzates and condensates thereof to 100 parts by weight of inorganic particles and which have a median diameter of 1 to 60 nm in a volume-based particle size distribution,
(B) a difunctional (meth)acrylate,
(C) a trifunctional (meth)acrylate, and
(D) a photoradical initiator,
wherein the amount of component (A) included is from 10 to 35 wt % and the collective amount of components (A), (B) and (C) is at least 70 wt %.

3 more elements

Dependencies are inferred from the claim text.