Otsuka Chemical Co., Ltd.

Toyota Jidosha Kabushiki Kaisha

Kyoto University

Minoru Yamamoto

Daisuke Suzuki

Shinji Nakano

Mitsuo Akada

Emiko Daimon

Ryoichi Hiroi

Shigeru Yamago

Kenji Kawazu

Hiroyoshi Mori

Takuya Nomoto

Susumu Umemura

Provided is a method for producing an organic tellurium compound that enables the production of an organic tellurium compound in high yield using metallic tellurium as a source material and produces less amount of side products. A method for producing an organic tellurium compound includes the steps of: (A) reacting metallic tellurium with a compound represented by a general formula (1) below; and (B) reacting a compound obtained by the step (A) with an organic halogen compound, the metallic tellurium having a copper content of less than 100 ppm,M(R)m &#x2003;&#x2003;Formula (1)where Rrepresents an alkyl group having 1 to 8 carbon atoms, an aryl group or an aromatic heterocyclic group, M represents an alkali metal or an alkaline earth metal, m represents 1 when M is an alkali metal, and m represents 2 when M is an alkaline earth metal.

Method for producing organic tellurium compound and method for producing vinyl polymer

Provided are a method for producing a multibranched polymer that can produce a multibranched polymer having a narrow molecular weight distribution in a one-pot procedure and the multibranched polymer. A method for producing a multibranched polymer includes the step of polymerizing a first vinyl monomer having a polymerization-initiating group in an &#x3b1;-position of a vinyl bond and a second vinyl monomer free of polymerization-initiating group in an &#x3b1;-position of a vinyl bond by a living radical polymerization.

Method for producing multibranched polymer and multibranched polymer

The invention provides flaky titanic acid having polymerizable functional groups, a suspension of the same, titanic acid coating films excellent in tight adhesion, and resin bases with titanic acid coating films, namely, flaky titanic acid obtained by treating a layered titanate with an acid and then making an organic basic compound act on the obtained product to conduct interlaminar swelling or delamination, characterized in that at least part of the organic basic compound is one having a polymerizable functional group such as acryl or methacryl and, preferably, in that the layered titanate is one represented by the general formula: AM&#x25a1;TiO[wherein A and M are different from each other and are each a mono- to tri-valent metal; &#x25a1; represents a Ti-defective site; x is a positive real number satisfying the relationship: 0&#x3c;x&#x3c;1; and y and z are 0 or positive real numbers satisfying the relationship: 0&#x3c;y+z&#x3c;1].

Flaky titanic acid having polymerizable functional groups, suspension of the same, and coating films made therefrom

Disclosed are: a compatibilizing agent for a polymer alloy, which can increase the compatibility with a variety of polymers; a polymer alloy using the compatibilizing agent; and master batch for a polymer alloy. Specifically disclosed is a compatibilizing agent which is used for the preparation of a polymer alloy by blending at least one polymer (A) selected from the group consisting of a polyphenylene sulfide, a polyphenylene ether and a polyamide with a polymer (B) of a different type from the polymer (A) at such a ratio that the amount of the polymer (A) blended is the same as or more than that of the polymer (B). The compatibilizing agent comprises a nanosheet-shaped layered titanic acid which is produced by intercalate an organic basic compound between the layers of a layered titanic acid.

Compatibilizing agent for polymer alloy, polymer alloy, and master batch for preparation of polymer alloy

A pigment aqueous-medium dispersion and coating material which have no particle feeling and exhibit a highly excellent silky feeling, the pigment aqueous-medium dispersion is a dispersion of a photoluminescent pigment in an aqueous medium, characterized in that the photoluminescent pigment is flaky titanic acid obtained by treating layered titanate with acid and then reacting an organic basic compound with the treated layered titanate to delaminate, and the flaky titanic acid has an average longer diameter of 5 to 30 &#x3bc;m and an average thickness of 0.5 to 300 nm.

Pigment aqueous-medium dispersion and coating material

A method for producing a resin substrate coated with a titanic acid film, characterized in that it comprises providing a suspension of a scaly titanic acid by treating a layered titanate with an acid or warm water and allowing a basic compound having a force swelling the interstice of the layer to act thereon, to swell or separate the layer, applying the suspension on a resin substrate, and subjecting the resultant substrate to a heat treatment at a temperature less than the softening temperature of said resin substrate, preferably at a temperature less than 100&#xb0; C., to thereby form a titanic acid film on the resin substrate. The above method can be suitably used for forming an inorganic coating film excellent in transparency, surface hardness, gas-barrier property and the like on any type of resin substrate with good adhesion property.

Method for producing resin substrate coated with titanic acid film

A flame-retardant, characterized in that it comprises a layered titanic acid in the form of a nano sheet which is formed by a method comprising treating a layered titanic acid salt with an acid or warm water and then reacting the resultant mixture with an organic basic compound, or carrying out the step of treating a layered titanic acid salt with an acid or warm water and the step of reacting with an organic basic compound, in one pot, to thereby swell or separate the layers; and a flame-retardant resin composition, characterized in that it comprises 100 parts by weight of a resin and 0.5 to 50 parts by weight of the above layered titanic acid in the form of a nano sheet.

Flame retardant and flame-retardant resin composition

A biodegradable resin composition comprising polylactic acid and nanosheeted layered titanic acid characterized in that the nonasheeted layered titanic acid is nanosheeted layered titanic acid obtained by a preparing process comprising the steps of:

Biodegradable resin composition

The present invention provides a 2,2&prime;-bis(6-benzotriazolylphenol) compound represented by the formula

2,2&prime;BIS(6-Benzotriazolylphenol) compound, ultraviolet ray absorber comprising the compound, copolymer containing the compound and polymer composition containing the compound

Growing community of inventors

Tokushima, Japan

Minoru Yamamoto