Mitsubishi Gas Chemical Company, Inc.

Kunitoshi Mimura

Rigoberto C Advincula

Noriyuki Kato

Daisuke Ohno

Maki Ito

Goro Shimaoka

Makoto Mizutani

Kyohei Takakuwa

Masahiro Shimada

Isamu Mio

Noriko Dodo

A composition for an oil or gas well formation, containing a viscoelastic surfactant; and a modified nanomaterial and a producing method of the composition, and a forming method of the oil or gas well. The modified nanomaterial optionally contains a nanocellulose. The modified nanomaterial optionally has, on its surface, a sulfate group, a sulfite group, a carboxy group, an ethylene oxide chain, an amino group, an ester group, a silane group, a tertiary ammonium group or a mixture thereof.

Acid matrix applications: well stimulation and completion fluids using viscoelastic surfactants and modified additives

A viscoelastic surfactant fluid composition comprising: a surfactant: a counterion: and a modified nanoparticle.

Viscoelastic surfactant fluid composition, and method of using the same

According to the present invention, a polycarbonate resin having a repeat unit represented by the following formula (1) and a repeat unit represented by the following general formula (2), and an optical film using the same, can be provided.  In the formula, Y is a cycloalkylene group having a carbon number of 4 through 20 or a structure represented by the following general formula (3).  In the general formula (3), R, R, Rand Rare independently a hydrogen atom or a monovalent alkyl group having a carbon number of 1 through 5.

Polycarbonate resin and optical film using the same

In the process of the present invention for producing an aliphatic poly(ester carbonate), maleic anhydride, a C glycol and hydrogen are reacted in the presence of a hydrogenating catalyst. By this process, an aliphatic poly(ester carbonate) having practically satisfactory moldability and physical properties is produced in a short period of time by a simplified method as compared to conventional production processes.

Process for producing aliphatic polyester carbonate

A fiber-reinforced resin composition having surface smoothness, which comprises

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Tokyo, Japan

Kunitoshi Mimura