Tokyo Ohka Kogyo Co., Ltd.

Hokkaido University

Idemitsu Kosan Company, Limited

Toshifumi Satoh

Takahiro Dazai

Ken Miyagi

Takuya Isono

Fumiaki Takagi

Masami Yamanaka

Toyoji Kakuchi

Shunma Tanaka

Ryosuke Sakai

A resin composition for forming a phase-separated structure includes a block copolymer having a block (b1) formed of a repeating structure of styrene units, the block (b1) being partially substituted with a constituent unit represented by the following General Formula (c1) and a block (b2) having a repeating structure of methyl methacrylate units. In the formula, R is a hydrogen atom or a methyl group and Ris a hydrophobic functional group

Resin composition for forming phase-separated structure, method for producing structure including phase-separated structure, and block copolymer

A composition for forming a phase-separated structure contains a block copolymer having a block (b1) consisting of a repeating structure of a styrene unit and a block (b2) consisting of a repeating structure of a methyl methacrylate unit, in which the block (b2) is disposed at least at one terminal portion of the block copolymer, the block copolymer has a structure (e1) represented by General Formula (e1) at least at one main chain terminal, and the structure (e1) is bonded to the main chain terminal of the block (b2) disposed at a terminal portion of the block copolymer. Rerepresents a hydrocarbon group containing a hetero atom, and Re1 represents a hydrogen atom or a halogen atom. 

Provided is a water-based lubricant comprising a hyperbranch-type polyglycerol having an absolute molecular weight of from 5,000 to 500,000. The water-based lubricant has a small friction coefficient and is excellent in lubrication performance and defoamability, as compared with conventional water-based lubricants comprising an ethylene/propylene oxide copolymer, and is favorable, for example, for a water-based metal processing agent and a hydraulic pressure fluid.

Aqueous lubricant

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Hokkaido, Japan

Toshifumi Satoh