The present application relates to a filter having a photocatalyst attached thereto, which comprises: a substrate; and a photocatalyst bonded on the substrate, in which the photocatalyst has each photocatalyst bonded and combined by a polymer binder, and the substrate and the photocatalyst are bonded by a hydrophilic polymer binder.

The present application relates to a filter having a photocatalyst attached thereto, which comprises: a substrate; and a photocatalyst bonded on the substrate, in which the photocatalyst has each photocatalyst bonded and combined by a polymer binder, and the substrate and the photocatalyst are bonded by a hydrophilic polymer binder.

The following phenomenon occurring in a fluororesin membrane material using, as its main material, a PTFE having a photocatalyst layer on a surface thereof is prevented: the surface of the membrane material is contaminated after the lapse of some years from the start of its use. A photocatalyst layer arranged on the PTFE layer of a Type A membrane material is formed of a photocatalyst and fluororesins, and the fluororesins are formed of at least one of a FEP or a PFA, and a PTFE. Here, the amount of the PTFE is preferably larger than that of at least one of the FEP or the PFA, and the weight of the photocatalyst is preferably 40% or less with respect to the total weight of the photocatalyst and the fluororesins.

The following phenomenon occurring in a fluororesin membrane material using, as its main material, a PTFE having a photocatalyst layer on a surface thereof is prevented: the surface of the membrane material is contaminated after the lapse of some years from the start of its use. A photocatalyst layer arranged on the PTFE layer of a Type A membrane material is formed of a photocatalyst and fluororesins, and the fluororesins are formed of at least one of a FEP or a PFA, and a PTFE. Here, the amount of the PTFE is preferably larger than that of at least one of the FEP or the PFA, and the weight of the photocatalyst is preferably 40% or less with respect to the total weight of the photocatalyst and the fluororesins.

Provided are a novel metallocene-supported catalyst and a method of preparing a polyolefin using the same. The metallocene-supported catalyst according to the present disclosure may be used in the preparation of polyolefins, it may have excellent activity and excellent reactivity with comonomers, and it may prepare olefinic polymers having a high molecular weight and a low molecular weight.

Provided are a novel metallocene-supported catalyst and a method of preparing a polyolefin using the same. The metallocene-supported catalyst according to the present disclosure may be used in the preparation of polyolefins, it may have excellent activity and excellent reactivity with comonomers, and it may prepare olefinic polymers having a high molecular weight and a low molecular weight.

Disclosed herein are compositions containing branched C.sub.20 2-substituted alpha olefins and processes for making the compositions by dimerization reaction of a C.sub.10 olefin composition.

Disclosed herein are compositions containing branched C.sub.20 2-substituted alpha olefins and processes for making the compositions by dimerization reaction of a C.sub.10 olefin composition.

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.

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.