Shin-etsu Chemical Co., Ltd.

Ryosuke Yoshii

Kohei Masuda

Tsuneo Kimura

Koichi Higuchi

Tomohiro Inoue

Manabu Furudate

Mamoru Hagiwara

Daichi Todoroki

Tomoya Minamikawa

A photocurable composition including the following components (A) to (D), (A) a monomer having one (meth)acryloyl structure, (B) a crosslinking agent having two or more (meth)acryloyl structures, (C) an inorganic ultraviolet-blocking agent having a 50% volume cumulative particle size of 1 to 50 nm, and (D) a photopolymerization initiator in an amount of 0.05 to 1 part by weight, relative to total 100 parts by weight of components (A) and (B), wherein a part or all of component (A) is a hydrophilic monomer, and a content of the hydrophilic monomer is 70% by weight or more, relative to the total weight of components (A) and (B).

Photocurable composition, a hydrogel and a molded product thereof

A photocatalyst laminate which is composed of an undercoat layer provided on a substrate and a photocatalyst layer laminated on the surface of the undercoat layer. The undercoat layer contains (A) 100 parts by mass of a resin component and (B) 0.1-50 parts by mass of fine core-shell particles, each of which has a core that is formed of a fine tetragonal titanium oxide solid solution particle wherein tin and manganese are solid-solved and a shell that is formed from silicon oxide on the outside of the core. This photocatalyst laminate is not susceptible to decrease in the photocatalyst function even under outdoor exposure for a long period of time, and is thus capable of providing a coated article that exhibits excellent weather resistance.

Photocatalyst laminate

A silicone rubber composition is provided comprising (A) an alkenyl-containing organopolysiloxane, (B) reinforcing silica, (C) an inorganic particle-polysiloxane composite comprising inorganic nanoparticles having a polysiloxane containing SiRROand SiRRROunits grafted to their surface, and (D) a curing agent. The composition cures into a transparent silicone rubber having UV-absorbing ability and heat resistance.

Silicone rubber composition and cured product thereof

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Annaka, Japan

Ryosuke Yoshii