Chisso Corporation

Kumamoto University

Jnc Corporation

Minoru Nakayama

Shizuo Murata

Toshiya Sawai

Masami Todokoro

Yukino Abe

Kenji Furukawa

Ryuji Kobayashi

Masayo Sakata

Masaharu Hayakawa

Chuichi Hirayama

Kenya Ito

Hiroyuki Sato

Mikio Yamahiro

Koji Ohguma

Hisao Oikawa

Shin Koga

The invention provides a method for selecting and eliminating endotoxin selectively from a solution where a highly acidic substance such as heparin co-exists, and an adsorbent used therefore. The invention also provides a method for providing the endotoxin adsorbent, which includes partially modifying amino groups contained within an amino group-containing molecule used as a ligand of the endotoxin adsorbent, with a molecule that is capable of reacting with an amino group.

Endotoxin adsorbent, and method for removing endotoxin using the same

A polymer containing: a constitutional unit A that is derived from fluorosilsesquioxane having one addition polymerizable functional group in a molecule; a constitutional unit B that is derived from organopolysiloxane having an addition polymerizable functional group; and a constitutional unit C that is derived from an addition polymerizable monomer and has a group having a polymerizable unsaturated bond on a side chain, and optionally containing a constitutional unit D that is derived from an addition polymerizable monomer other than the fluorosilsesquioxane having one addition polymerizable functional group in a molecule, the organopolysiloxane having an addition polymerizable functional group and the addition polymerizable monomer having a functional group capable of introducing a group having a polymerizable unsaturated bond.

Fluorine-containing polymer and resin composition

A nucleic acid adsorbent in which a polymer having a constitutional unit represented by the following formula (I) is immobilized on a water-insoluble carrier is used as a nucleic acid adsorbent capable of selectively and efficiently adsorbing nucleic acids from complex mixtures, such as cell extract, 

Nucleic acid adsorbent; methods for adsorbing, removing, dissociating, and recovering nucleic acids using the same; and method for regenerating the same

The present invention is to provide new diamino compounds useful for raw materials for production of liquid crystal aligning films that have excellent aligning properties and uniform and high pretilt angles over the whole display surface of wide substrates without afterimage phenomenons. The liquid crystal aligning films are constituted by a certain polyimide having as a principal constituent a structure unit represented by the formula; ##STR1##

Diamino compounds and liquid crystal aligning films

The present invention is to provide diamino compounds useful to polyamide raw materials for production of liquid crystal alignment layers having excellent voltage holding ratios without development of image-sticking phenomena, a method for producing the compounds and liquid crystal display devices equipping the liquid crystal alignment layers. The Diamino compounds are represented by the general formula (1): ##STR1## wherein R indicates hydrogen or an alkyl group having 1 to 8 carbon atoms, further, X, Y and Z indicate hydrogen, an alkyl group having 1 to 3 carbon atoms or fluorine, respectively, and a part or all of them may be the same or different, and the positions of these substitutive groups may be ortho positions or meta positions.

Diamino compounds and their production method and liquid crystal

The present invention provides a liquid crystal aligning film having a reduced after image and a good liquid crystal aligning property caused by a rubbing treatment of a thin film consisting of organics, and its liquid crystal display device. Specifically, they are liquid crystal aligning films containing a polymer having the skeleton represented by the general formula (1): ##STR1## in its principal chain as a main component; a liquid crystal aligning film containing a polyimide having a structural unit represented by the general formula (2): ##STR2## as the main component wherein X and Y each represent the same or atoms or groups including hydrogen atoms, an alkyl group having from 1 to 3 carbon atoms, a fluorine atom, a chlorine atom or a trifluoromethyl group, wherein their substituent positions may be at the ortho-position or the meta-position, and R shows a tetravalent aromatic or aliphatic group or a composite group having both tetravalent aromatic and aliphatic properties; and a liquid crystal display device prepared by using them.

Liquid crystal aligning films and liquid crystal display devices

Diamino compounds and their production method

An improved liquid crystal-aligning coating composed mainly of a specified high molecule, mainly a polyether polyimide or a polyimide, and capable of controlling the alignment and pretilt angle of liquid crystals; a liquid crystal display element using the coating; and a dinitro compound and a diol compound each as an intermediate of a diamino compound constituting the polyimide ether, are provided, which specified high molecule contains in its molecular long chain, a substituted cyclohexylidene group or a cyclohexylidene group expressed by the formula ##STR1## wherein R.sub.1 to R.sub.6 of the cyclohexyl group each represent H, 1-15C alkyl group, a cyclohexyl group or a cyclohexyl group having 1-15C alkyl group, and may be each the same or partly or totally different.

Liquid crystal-aligning coating and a liquid crystal display element

A liquid crystal-aligning film affording a high pretilt angle and capable of realizing a liquid crystal display for STN mode having a superior display quality and a liquid crystal display element including such film are provided,

Liquid crystal-aligning film and a liquid crystal display element

A novel diamino compound and a dinitro compound and a diol compound as its derivatives are provided, which diamino compound is useful as a raw material for polyimide compounds for an aligning film in a liquid crystal display element exhibiting a high pretilt angle, and expressed by the formula ##STR1## wherein R.sub.1 to R.sub.6 each are H or 1-22C alkyl and may be the same as or different from one another, and R.sub.7 to R.sub.14 each are H or 1-3C alkyl and may be the same as or different from one another.

Diamino compound and its intermediates

Diamino compounds, dinitro compounds, diol compounds and a process for preparing the diamino compounds which are useful as materials of poly-imide compounds for obtaining aligning films having high pretilt angles in liquid crystal display elements are provided. The diamino compounds are represented by the general formula: ##STR1## wherein R.sub.1 -R.sub.6 are a hydrogen atom or an alkyl group having 1 to 22 carbon atoms, respectively, and R.sub.7 -R.sub.12 are a hydrogen atom, an alkyl group having 1 to 3 carbon atoms, F or Cl respectively.

Growing community of inventors

Minamata, Japan

Minoru Nakayama