Toray Industries, Inc.

Takafumi Ogawa

Masahiro Kimura

Seiichiro Murase

Takao Sasaki

Tsuyoshi Tominaga

Masakazu Koiwa

Kazumasa Nagao

Kazunori Sugimoto

Harutoki Shimura

Tsuyoshi Hamada

Daisuke Kitazawa

Hiroki Tomioka

Koji Nakatsuji

Takeshi Ishigaki

Shunsuke Tabayashi

Hiroaki Tanaka

Takaaki Yasuda

Jun Okabe

Takahiro Tokuyama

Masaki Higashi

Keisuke Yoneda

Kazuki Sato

Masami Ogata

Yohei Adachi

Tomoya Yoshizaki

Kiyohiko Takaya

Shinya Mitsui

Kazumana Nagao

Takeshi Toray Fibers & Textiles Res Lab Co Ltd Ishigaki

The present invention relates to a composite semipermeable membrane including: a support membrane including a base and a porous support layer; and a separation functional layer disposed on the porous support layer and including a crosslinked aromatic polyamide, in which the separation functional layer contains sulfo groups in an amount of 7.0×10to 5.0×10g/mand includes a structure represented by the formula 1.

Composite semi-permeable membrane

The present invention relates to a composite semipermeable membrane including: a substrate; a porous support layer disposed on the substrate; and a separation functional layer disposed on the porous support layer, in which the separation functional layer includes: a first layer including a crosslinked aromatic polyamide; and a coating layer existing on the first layer and including an aliphatic polyamide including a fluorine atom, and the composite semipermeable membrane has a proportion of the number of fluorine atoms to the total number of atoms of all elements of 0.5% or more and 8% or less, and has a ratio (N/O ratio) of the number of nitrogen atoms to the number of oxygen atoms of 0.8 or more and 1.3 or less.

Composite semipermeable membrane

The present invention relates to a composite semipermeable membrane including: a supporting membrane including a substrate and a porous supporting layer; and a separation functional layer disposed on the porous supporting layer, in which the separation functional layer includes: a crosslinked polyamide; and a hydrophilic polymer which is a polymer of a monomer having an ethylenically unsaturated group, and a surface of the separation functional layer has a ratio of the number of oxygen atoms to the number of nitrogen atoms (O/N ratio), both determined by X-ray photoelectron spectrometry, of 1.5-10, and a standard deviation of the O/N ratio of 0.15 or larger.

Composite semipermeable membrane and method for producing composite semipermeable membrane

The present invention relates to a layered semipermeable membrane satisfying the conditions below. (A) The maximum peak intensity between 3700 and 2900 cmis 0.08 or greater in the difference spectrum between an IR spectrum measured at 25&#xb0; C. and 97% relative humidity and an IR spectrum measured at 25&#xb0; C. and 3% relative humidity. (B) The peak top wavenumber between 3700 and 2900 cmof the aforementioned difference spectrum is 3400 cmto 3550 cm. (C) The N1s peak has a maximum value at 401 eV or greater in X-ray photoelectron spectroscopy in which X-rays are radiated to a coat layer.

Layered semipermeable membrane

A composite semipermeable membrane including: a substrate; a porous supporting layer formed on the substrate; and a separation functional layer formed on the porous supporting layer, in which the separation functional layer contains crosslinked wholly aromatic polyamide as a main component and contains a carboxy group, a ratio of (molar equivalent of the carboxy group)/(molar equivalent of an amide group) in functional groups contained in the separation functional layer is 0.40 or more, and an average ratio of oxygen atoms/nitrogen atoms in front and rear sides of the separation functional layer is 0.95 or less.

Composite semipermeable membrane and production thereof

The present invention relates to a composite semipermeable membrane including a supporting membrane and a separation functional layer disposed on the supporting membrane, in which the separation functional layer comprises an aromatic polyamide, the aromatic polyamide has side chains and terminal groups, at least one of the side chains and terminal groups of the aromatic polyamide being an amino group, at least one of the side chains and terminal groups of the aromatic polyamide is a substituent having a structure represented by formula (1): &#x2014;NXY or formula (2): &#x2014;NXYZ, and in the aromatic polyamide, a content A of substituents having structures represented by formula (1) and formula (2) and a content B of amide groups satisfy 0.005&#x2264;A/B&#x2264;0.15.

A light emitting device material containing a pyrene compound of formula (1) and a light emitting device. In formula (1), Rto Rare the same or different and are selected from hydrogen, alkyl, cycloalkyl, heterocyclic, alkenyl, cycloalkenyl, alkynyl, alkoxy, alkylthio, arylether, arylthioether, aryl, heteroaryl, halogen, carbonyl, carboxyl, oxycarbonyl, carbamoyl, amino, phosphine oxide and silyl; adjacent substituents among Rto Rmay be combined with each other to form a ring; n represents an integer of 1 to 3; X is &#x2014;O&#x2014;, &#x2014;S&#x2014; or &#x2014;NR&#x2014;; Ris selected from hydrogen, alkyl, cycloalkyl, heterocyclic, alkenyl, cycloalkenyl, alkynyl, aryl, heteroaryl or amino; Rmay be combined with Ror Rto form a ring; Y is a single bond, arylene or heteroarylene; and n substituents among Rto Rand any one of Rto Rare used for linkage with Y 

Light-emitting device material and light-emitting device

The present invention is a light-emitting device material characterized by containing a pyrene compound represented by the following general formula (1):   wherein R15 is a specific functional group; andY1 to Y4 is selected from among a nitrogen atom and a carbon atom, provided that at least one of the Y1 to Y4 is a nitrogen atom and at least one thereof is a carbon atom, and no substituents exist on the nitrogen atom in the case of the nitrogen atom. This material provides a light-emitting device having high luminous efficiency and excellent durability.

Material for light-emitting element and light emitting element

Growing community of inventors

Shiga, Japan

Takafumi Ogawa