Nippon Shokubai Co., Ltd.

Shin-ya Imoto

Takashi Abe

Morihiro Kitamura

Hikaru Takahashi

Takehiko Morita

Tatsuhiko Akiyama

Hidetaka Nakanishi

Yutaka Takahashi

Tomoaki Kitamura

Tomonori Shinokura

An object of the present invention is to provide a method for producing a maleimide block copolymer having an acrylic monomer-derived structural unit. Provided is a method for producing a block copolymer having a polymer block (A) containing an acrylate-derived structural unit and a polymer block (B) containing an N-substituted maleimide ring structure and a methacrylate-derived structural unit, the method comprising a polymerization step in which a nitroxide polymer (A1) having a polymer block (A) and an organophosphorus unit-containing nitroxide structure at an end of the polymer block (A) and a monomer (B1) containing a methacrylate and an N-substituted maleimide are polymerized in the presence of a thiol compound (C1).

Method for producing maleimide block copolymer

High purity cyclohexasilane and a method for increasing the purification efficiency thereto are provided. The method for producing cyclohexasilane of the present invention is characterized in that, in distilling crude cyclohexasilane to obtain purified cyclohexasilane, the absolute pressure during distillation is set to 2 kPa or less, and the heating temperature of crude cyclohexasilane is set to 25 to 100&#xb0; C. The cyclohexasilane of the present invention contains pure cyclohexasilane at a rate of 98% by mass or more and 100% by mass or less.

Cyclohexasilane

A neutral complex of a cyclic silane characterized in being represented by the general formula [Y][SiZH]. (In the formula: Y is at least one kind of coordination compound selected from a group consisting of (1) compounds represented as XR. (when Xis P, P&#x2550;O or N, n=3 and each Rrepresents a substituted or unsubstituted alkyl group or aryl group and Rs are the same or different; when Xis S, S&#x2550;O or O, n=2 and each Rrepresents the same group as described above and Rs are the same or different; and the number of amino groups in XRis 0 or 1), and (2) at least one heterocyclic compound selected from the group consisting of substituted or unsubstituted N&#x2014;, O&#x2014;, S &#x2014;or P&#x2014; containing heterocyclic compounds that have an unshared electron pair in the ring (the number of amino groups in the heterocyclic compound is 0 or 1), each Z represents a halogen atom of any of Cl, Br, I and F and Zs are the same or different, l is 1 or 2, m is 3 to 8, and a is 0 to m.

Neutral complex of cyclic silane, manufacturing method therefor, and method for manufacturing cyclic hydrogenated silane or cyclic organic silane

Method for producing cyclohexasilane

An object of the present invention is to provide a production method that can efficiently produce a cyclic silane compound or a salt thereof with a high yield and to provide a novel salt having a cyclic silane dianion that is easy to handle and a cyclic silane dianion salt-containing composition. The method for producing a cyclic silane compound or a salt thereof of the present invention includes the step of allowing a halosilane compound to react in the presence of at least one of a phosphonium salt and an ammonium salt, and a compound represented by a specific formula.

Method for producing cyclic silane compound or salt thereof, salt having cyclic silane dianion, and cyclic silane dianion salt-containing composition

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Osaka, Japan

Shin-ya Imoto