Kaneka Corporation

Nissan Motor Company Limited

Akita University

Kaneka Corpation

Ryutaro Mukai

Tomohiro Abo

Yusuke Kato

Yoshio Shimoida

Masato Kusakabe

Shigeo Ibuka

Takashi Kikuchi

Masahiro Kojima

Norihisa Waki

Satoshi Oku

Takashi Ito

Yasuyuki Tanaka

Shiho Inoue

Hiroyuki Ogino

Akiko Waki

Hiroto Koma

Yuji Muroya

Masami Yanagida

Katsuya Fujisawa

Shigemi Naganawa

Takahiro Yasumoto

An object of the present invention is to provide an environmentally friendly drilling fluid that has excellent cuttings transport capability and excellent hole cleaning capability. A drilling fluid according to the present disclosure is a drilling fluid containing water, biodegradable fibers, and a thickener. The thickener contains a biodegradable polysaccharide. The content of the biodegradable polysaccharide in the drilling fluid is greater than or equal to 0.01 g/L and less than or equal to 5 g/L.

Drilling fluid, drilling method, and drilling fluid additive

Provided is a polymer material containing at least one kind of a cellulose derivative having (a) an organosilyl group (the organosilyl group having a first aliphatic group, an unsaturated aliphatic group, or an aromatic group), and (b) an acyl group or a second aliphatic group.

Polymer material, film, circular polarizing plate, image display apparatus, and manufacturing method for film

The retardation film according to the present invention is characterized by: including a polymer material that includes at least one cellulose derivative which includes specific monomer units: having an in-plane retardation Re(550) of 105-160 nm, reverse wavelength dispersion property, Re(450)/Re(550), of 0.80-0.89, and a thickness of 20-50 &#x3bc;m; and containing inorganic particles. In particular, the present invention exhibits the effect of reducing the photoelastic coefficient.

Retardation film and utilization thereof

A conductive film includes a layer 1 formed by a conductive material 1 that includes a polymer material 1 containing any of (1) an amine and an epoxy resin (where the epoxy resin and the amine are mixed in a ratio of 1.0 or more in terms of the ratio of the number of active hydrogen atoms in the amine with respect to the number of functional groups in the epoxy resin), (2) a phenoxy resin and an epoxy resin, (3) a saturated hydrocarbon polymer having a hydroxyl group, and (4) a curable resin and an elastomer and conductive particles 1. The conductive film has excellent stability in an equilibrium potential environment in a negative electrode and low electric resistance per unit area in the thickness direction. A multilayer conductive film including the conductive film achieves excellent interlayer adhesion, and using them as a current collector enables the production of a battery satisfying both weight reduction and durability.

Conductive film, current collector using same, battery and bipolar battery

The present invention achieves a phase difference film that is excellent in wavelength dispersion property, in-plane retardation, and film thickness, by using a polymeric material (i) which is composed of at least one type of cellulose derivative having a specific alkoxyl group substitution degree Dand a specific 2-naphthoyl group substitution degree Dand (ii) which has a specific total 2-naphthoyl group substitution degree D.

Retardation film, and optical compensation layer, optical compensation polarizing plate, liquid crystal display device and organic EL display device each using said retardation film

A multilayer conductive film includes a layerincluding a conductive material containing a polymer materialhaving an alicyclic structure and conductive particlesand a layerincluding a material having durability against positive electrode potential. The multilayer conductive film has stability in an equilibrium potential environment in a negative electrode and stability in an equilibrium potential environment in a positive electrode, has low electric resistance per unit area in the thickness direction, and has excellent barrier properties for a solvent of an electrolytic solution. A battery including a current collector employing the multilayer conductive film can achieve both weight reduction and durability.

Multilayer conductive film, current collector using same, battery and bipolar battery

Growing community of inventors

Settsu, Japan

Ryutaro Mukai