A silicone resin represented by formula (1) and having a Mw of 1,000-8,000 is useful in cosmetics.

[(C.sub.6H.sub.5).sub.3SiO.sub.1/2].sub.a[R.sup.1.sub.3SiO.sub.1/2].sub.b[R.sup.2.sub.2SiO.sub.2/2].sub.c[R.sup.3SiO.sub.3/2].sub.d[SiO.sub.4/2].sub.e(1)

R.sup.1 is a C.sub.1-C.sub.8 alkyl group, C.sub.6-C.sub.12 aryl group (exclusive of phenyl) or C.sub.1-C.sub.8 fluorinated alkyl group, R.sup.2 and R.sup.3 are each independently a C.sub.1-C.sub.8 alkyl group, C.sub.6-C.sub.12 aryl group or C.sub.1-C.sub.8 fluorinated alkyl group, a=0-0.2, b=0.1-0.5, c=0-0.2, d=0.01-0.5, e=0-0.6, a+b+c+d+e=1.0, at least one phenyl group is included in the molecule. A film of the silicone resin has a refractive index of at least 1.48.

A plasma polymerized thin film having low dielectric constant prepared by depositing a first precursor material represented by the following Chemical Formula 1:

##STR00001## wherein in the above Chemical Formula 1, R.sub.1 to R.sub.14 are each independently H or a substituted or non-substituted C.sub.1-C.sub.5 alkyl group, and when the R.sub.1 to R.sub.14 are substituted, their substituents comprise an amino group, a hydroxyl group, a cyano group, a halogen group, a nitro group, or a methoxy group.

An object of the present invention is to improve the water dispersibility of the PVA-based resin and also to suppress the swelling of the PVA-based resin. The object is achieved by organic-inorganic composite particles, which have an average particle size of preferably 1 m to 3,000 m, including a polyvinyl alcohol-based resin and a component having a three-dimensional siloxane crosslinked structure that is derived from a hydrolysis-polycondensation product of an alkoxysilane and/or a low condensate thereof, wherein the alkoxysilane includes a T unit and/or a Q unit as a structural unit (s), and a Si content with respect to a total weight of the composite particles is 0.1 wt % or more and 23 wt % or less in terms of SiO.sub.2.

The present invention relates to a process for producing an aerogel composite, comprising a step of infiltrating a coating liquid containing a coating material and a solvent in aerogel and a step of removing the solvent from the infiltrated coating liquid.

Provided are a resin molded body and applications thereof. The resin molded body includes a resin layer containing a resin and a compound represented by Formula (1), and on at least one surface of the resin layer, a protective layer that contains at least one substance selected from the group consisting of urethane resin, acrylic resin, and polysiloxane. In Formula (1), Het.sup.1 represents a divalent 5-membered or 6-membered aromatic heterocyclic residue. X.sup.a, X.sup.b, X.sup.c, and X.sup.d each independently represent a hetero atom, and Y.sup.a, Y.sup.b, Y.sup.c, Y.sup.d, Y.sup.e, and Y.sup.f each independently represent a hetero atom or a carbon atom. A ring bonded to Het.sup.1 may have a double bond at any position.

A silicone resin represented by formula (1) and having a Mw of 1,000-8,000 is useful in cosmetics.

[(C.sub.6H.sub.5).sub.3SiO.sub.1/2].sub.a[R.sup.1.sub.3SiO.sub.1/2].sub.b[R.sup.2.sub.2SiO.sub.2/2].sub.c[R.sup.3SiO.sub.3/2].sub.d[SiO.sub.4/2].sub.e(1)

R.sup.1 is a C.sub.1-C.sub.8 alkyl group, C.sub.6-C.sub.12 aryl group (exclusive of phenyl) or C.sub.1-C.sub.8 fluorinated alkyl group, R.sup.2 and R.sup.3 are each independently a C.sub.1-C.sub.8 alkyl group, C.sub.6-C.sub.12 aryl group or C.sub.1-C.sub.8 fluorinated alkyl group, a=0-0.2, b=0.1-0.5, c=0-0.2, d=0.01-0.5, e=0-0.6, a+b+c+d+e=1.0, at least one phenyl group is included in the molecule. A film of the silicone resin has a refractive index of at least 1.48.

A silicone resin represented by formula (1) and having a Mw of 1,000-8,000 is useful in cosmetics.

[(C.sub.6H.sub.5).sub.3SiO.sub.1/2].sub.a[R.sup.1.sub.3SiO.sub.1/2].sub.b[R.sup.2.sub.2SiO.sub.2/2].sub.c[R.sup.3SiO.sub.3/2].sub.d[SiO.sub.4/2].sub.e(1)

R.sup.1 is a C.sub.1-C.sub.8 alkyl group, C.sub.6-C.sub.12 aryl group (exclusive of phenyl) or C.sub.1-C.sub.8 fluorinated alkyl group, R.sup.2 and R.sup.3 are each independently a C.sub.1-C.sub.8 alkyl group, C.sub.6-C.sub.12 aryl group or C.sub.1-C.sub.8 fluorinated alkyl group, a=0-0.2, b=0.1-0.5, c=0-0.2, d=0.01-0.5, e=0-0.6, a+b+c+d+e=1.0, at least one phenyl group is included in the molecule. A film of the silicone resin has a refractive index of at least 1.48.

Provided is an optical filter, including an absorbing glass substrate composed of phosphate-based glass or fluorophosphate-based glass; a bonding layer with a single layer structure; and a resin layer, wherein the resin layer is provided on the absorbing glass substrate through the bonding layer, wherein the bonding layer includes a Si atom and one or more selected from a Ti atom, a Zr atom, and an Al atom; or an optical filter, including an absorbing glass substrate composed of phosphate-based glass or fluorophosphate-based glass; and a resin layer, wherein the resin layer includes a Si atom and one or more selected from a Ti atom, a Zr atom, and an Al atom, and is provided on the absorbing glass substrate.

Provided is an inorganic fine particle dispersion which has excellent storage stability and from which it is possible to form a coating film having high light transmittance and high coating film strength (high adhesiveness with respect to a base material of the coating film). The inorganic fine particle dispersion contains inorganic fine particles, a liquid dispersion medium A (excluding water) having a boiling point not lower than 100? C. but lower than 190? C., and a liquid dispersion medium B having a boiling point lower than 100? C. The percentage content of the liquid dispersion medium A is not less than 0.5 mass % but less than 15 mass % with respect to 100 mass % of the total amount of the inorganic fine particle dispersion.

A transparent resin substrate composed of a light-transmitting resin base sheet, and an underlying layer, a hard coat layer, and an antireflection coating formed sequentially on the base sheet. The antireflection coating includes a medium refractive index layer on the hard coat layer, and a low refractive index layer on the medium refractive index layer. The underlying layer is a cured product of a hexa- or higher functional urethane acrylate monomer. The hard coat layer is a cured product of a hard coat layer composition containing a polymerizable monomer containing 50% by mass or more of a tri- or lower functional urethane acrylate monomer, silica particles, a silane coupling agent, and a metal chelate compound. The medium refractive index layer is a cured product of a medium refractive index layer composition. The low refractive index layer is a particle-free cured product of a low refractive index layer composition.