Mitsubishi Chemical Corporation

Haruki Okada

Akihiro Ishii

Mitsufumi Nodono

Fumino Momose

Hikaru Momose

Daisuke Fujikawa

Fumiko Fujie

Akikazu Matsumoto

Ayako Shimonaka

Hiroshi Niino

Masashi Ikawa

Shunsuke Chatani

Risa Yamashita

Masakazu Itou

Yuki Miyahara

A high-molecular-weight compound having a plurality of polymer chains linked through a divalent or higher-valent linking group, in which the divalent or higher-valent linking group has a thiol group and at least one of a thioether structure and a thiourethane structure, and a ratio of an absolute weight-average molecular weight to a relative weight-average molecular weight (absolute Mw/relative Mw) of the high-molecular-weight compound is 1.25 or more; and a method for producing the same are provided.

High-molecular-weight compound and method for producing same, composition and method for producing same, resin composition, additive for lubricating oil, and lubricating oil

The present invention provides a copolymer containing 80 mol % or more of a methyl (metl)acrylate unit (A), wherein the Vicat softening temperature thereof is 115&#xb0; C. or higher, the saturated water absorption rate thereof at 60&#xb0; C. is 4 % by weight or less, and the yellow index thereof is 1 or less. The process for producing the copolymer includes suspension polymerizing a monomer mixture containing 80 mol % or more of methyl (meth)acrylate (a) and 0.7 mol % to 7 mol % of (meth)acrylic acid (b), followed by melting and kneading the resulting precursor with an extruder to obtain a copolymer containing 80 mol % or more of a methyl (meth)acrylate unit (A), 0.45 mol % to 7 mol % of a (meth)acrylic acid unit (B), and 0.001 mol % to 0.25 mol % of a glutaric anhydride unit (C) wherein a conversion rate to the glutaric anhydride unit (C) is 0.1 % to 5 %.

Copolymer, process for producing copolymer, resin composition, shaped article and vehicle

A binder resin composition for secondary battery electrodes is described as containing a polymer (A) that has a structural unit represented by general formula (1) and a water-insoluble particulate polymer (B-1) and/or a water-soluble polymer (B-2) where (A), (B-1) and (B-2) are defined as described. A slurry for secondary battery electrodes contains the binder resin composition, an active material and a solvent. An electrode for secondary batteries is provided with a collector and an electrode layer that is arranged on the collector, where the electrode layer contains an active material and the binder resin composition. Alternatively, the electrode layer is obtained by applying the slurry for secondary battery electrodes to the collector, and drying the slurry thereon. 

Binder resin composition for secondary battery electrodes, slurry for secondary battery electrodes, electrode for secondary batteries, and lithium ion secondary battery

A binder resin for a nonaqueous secondary battery electrode of the invention satisfies I&#x2265;30 (Iindicates a sum of scattering intensities observed in a particle size range of from 1 to 100 nm) when a solution is formed by dissolving the binder resin in water at a concentration of 5% by mass and particle size distribution is measured by a dynamic light scattering method at 25&#xb0; C. The binder resin contains a polymer (B) having a structural unit represented by the following Formula (11) and a specific structural unit. The binder resin also contains a polymer (&#x3b1;) having a specific structural unit and a structural unit represented by the following Formula (22), and/or a mixture of a polymer (&#x3b2;1) having a specific structural unit and a polymer (&#x3b2;2) having a structural unit represented by the following Formula (22). 

Binder resin for nonaqueous secondary battery electrode, binder resin composition for nonaqueous secondary battery electrode slurry composition for nonaqueous secondary battery electrode, electrode for nonaqueous secondary battery, and nonaqueous secondary battery

A binder resin for a nonaqueous secondary battery electrode of the invention satisfies I&#x2267;30 (Iindicates a sum of scattering intensities observed in a particle size range of from 1 to 100 nm) when a solution is formed by dissolving the binder resin in water at a concentration of 5% by mass and particle size distribution is measured by a dynamic light scattering method at 25&#xb0; C. The binder resin contains a polymer (B) having a structural unit represented by the following Formula (11) and a specific structural unit. The binder resin also contains a polymer (&#x3b1;) having a specific structural unit and a structural unit represented by the following Formula (22), and/or a mixture of a polymer (&#x3b2;1) having a specific structural unit and a polymer (&#x3b2;2) having a structural unit represented by the following Formula (22). 

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Otake, Japan

Haruki Okada