Japan U-pica Company, Ltd.

Mitsubishi Gas Chemical Company, Inc.

Mitsubishi Gas Chemical Next Company, Inc.

Tetsuji Moroiwa

Akira Yamane

Takahiro Matsumoto

Koji Yamamoto

Katsuyuki Murai

Yasuhiro Maeda

Hiroshi Aihara

Kei Yamasaki

Nozomi Ishine

Keiko Taniuchi

Hiroshi Hayashi

Humiaki Kakeya

Nobutaka Yoshida

In a resin film configured to have a cured product layer formed from a curable resin composition on the surface of a substrate, the present invention aims to ensure not only the processability and other properties of the resin, but also the performance required for recent high-hardness coating films. The above problem was solved by a curable resin composition comprising the intended polyfunctional urethane (meth)acrylate oligomer, which is capable of forming a cured product layer when applied to and cured on a resin substrate.

Polyfunctional urethane (meth)acrylate and curable resin composition thereof

The present invention provides a thermosetting resin which enables the production of a carbon fiber reinforced plastic having a good workability and excellent mechanical properties by hand lay up (HUP) molding, resin transfer molding (RTM) or vacuum assisted resin transfer molding (VaRTM). The urethane (meth) acrylate compound (A) according to the present invention is an urethane (meth) acrylate produced by reacting a compound having two or more isocyanate groups with a monoalcohol compound containing ethylenically unsaturated groups or by reacting a compound having two or more isocyanate groups with a monoalcohol compound containing ethylenically unsaturated groups and an alcohol compound having two or more hydroxyl groups, said urethane (meth) acrylate compound (A) being characterized by having an isocyanate group and ethylenically unsaturated groups.

Urethane (meth) acrylate compound

It is an object of the present invention to provide a new alcohol compound, a polyester resin, an unsaturated polyester resin, a resin particle and an electrophotographic toner using the compound capable of using the renewable resources as a part of a raw material. An alcohol compound according to the present invention is characterized by representing the chemical formula [Chemical 1]. Furthermore, the polyester resin or the unsaturated polyester resin according to the present invention, is characterized in that the compound (wherein X is an aliphatic or an aromatic residue, Y is a refined rosin residue, a disproportionated rosin residue or a hydrogenated rosin residue, and n=0 to 1 in the formula.) is an essential component of an alcohol component. Further, the resin particle of the present invention is characterized by comprising the polyester resin.

Alcohol compound, a polyester resin, an unsaturated particle resin, a resin particle and an electrophotographic toner

A toner for developing an electrostatic charge image which contains a polyester resin as a binder resin is provided. The toner has excellent toner properties including low temperature fixing properties, anti-blocking property and anti-offset property, etc. Also a polyester resin for a toner is provided, which is used in the above-mentioned toner. As the binder resin for toner, a polyester resin comprising (1) an aromatic dicarboxylic acid and (2) a disproportionated rosin as an acid component, and (3) a tri- or more-valent polyhydric alcohol as an alcohol component is used, wherein the molar ratio (3)/(1) of the alcohol component (3) and the acid component (1) is from 1.05 to 1.65 and the molar ratio (2)/(1) of the acid components (2) and (1) is from 0.40 to 2.60.

Polyester resin for toner and toner for developing an electrostatic charge image

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Kanagawa, Japan

Tetsuji Moroiwa