Showa Denko K.k.

Nec Corporation

Resonac Corporation

Yasuyuki Ueda

Kentaro Watanabe

Yasuhiro Watanabe

Naoki Yoshida

Osamu Kurokawa

Hiroaki Akiyama

Takayuki Kido

Kazuki Eguchi

Shunsuke Yokouchi

Toru Shiiba

Takeshi Igarashi

Tomiharu Hamaguchi

Hiroshi Uchida

Tsuyoshi Kato

Kenzo Hanawa

Hideo Miyata

Akira Shibuya

Tomiharu Hamguchi

According to one aspect of the present invention, an organic fluorine compound is represented by a general formula(R-&#x3c0;-E-CH)-A&#x2003;&#x2003;(1A)(where A is a divalent perfluoropolyether group, &#x3c0; is an arylene group or a single bond, R is an alkenyl group or an alkynyl group, and E is an ether bond or an ester bond or a group that is represented by a chemical formula&#x2014;O&#x2014;CHCH(OH)CHO&#x2014;two groups each of which is represented by a general formulaR-&#x3c0;-E-CH&#x2014;may be the same or different, and at least one n among two &#x3c0; is an arylene group).

Organic fluorine compound, lubricant, and processing method of magnetic recording medium

According to one aspect of the present invention, an organic fluorine compound is represented by a general formula(R-&#x3c0;-E-CH-A-CH-E')-&#x3c0;&#x2032;-G&#x2003;&#x2003;(1B)

A method of producing an N,N-disubstituted amide of the present invention is a method of reacting a nitrile with an alcohol in the presence of a catalyst, wherein the nitrile is a compound represented by RCN (Rrepresents an alkyl group having 10 or less carbon atoms or an aryl group having 10 or less carbon atoms), wherein the alcohol is a compound represented by ROH (Rrepresents an alkyl group having 10 or less carbon atoms), wherein the catalyst is a metal salt represented by MXn (M represents a metal cation having an oxidation number of n, X represents a monovalent anion including a substituted sulfonyl group represented by &#x2014;S(&#x2550;O)&#x2014;R(Rrepresents a hydrocarbon group having 10 or less carbon atoms or a group in which some or all of hydrogen atoms in the hydrocarbon group are substituted with fluorine atoms), and n represents an integer of 1 to 4), a substituent bonded to a carbon atom in a carbonyl group of the N,N-disubstituted amide is R, and two substituents bonded to nitrogen atoms in an amide group are both R.

Method of producing N,N-disubstituted amide and catalyst for producing N,N-disubstituted amide

The invention provides a fullerene compound; a lubricant that is for a magnetic recording medium and that contains the fullerene compound; and a magnetic recording medium. The fullerene compound is an ionic liquid that is represented by general formula (1) and is formed from a Bronsted acid (HX) and a Bronsted base ([RR)N&#x2014;]&#x2014;R); wherein one of the Br&#xf8;nsted acid and the Bro&#xf8;nsted base contains a group having a fullerene; and the other contains a perfluoroalkyl chain. 

Fullerene compound, lubricant for magnetic recording medium, and magnetic recording medium

One embodiment of the present invention is a fullerene derivative represented by general formula (1) (wherein FLN is a fullerene backbone; each A is independently a monovalent group including a divalent perfluoropolyether group; each R is each independently a hydrogen atom, a hydrocarbon group, or an alkoxycarbonyl group including a divalent perfluoropolyether group; at least one of the 2m R is a hydrocarbon group or an alkoxycarbonyl group including a divalent perfluoropolyether group; m is an integer from 1 to 5; and n is an integer from 1 to 6).

Fullerene derivative and lubricant

A fullerene derivative, used as a lubricant, includes, in a molecule: a fullerene backbone; and n pyrrolidine rings each being condensed to the fullerene backbone, each of the pyrrolidine rings including one aryl group including a group including m perfluoropolyether chains, 'm' being an integer from 2 to 5 and 'n' being an integer from 1 to 5.

In an organic fluorine compound, an organic group including a single aromatic ring or a condensed ring consisting of aromatic rings at a non-bonded terminal is bonded to each of all of terminals of a chain structure including a perfluoropolyether structure.

Organic fluorine compound and lubricant

When a femto cell base station used for a communication system provided with a function of providing a predetermined supplementary service receives first information indicating supplementary service control from a radio terminal, the femto cell base station converts the received information to a SIP (Session Initiation Protocol) message including the first information and transmits the SIP message to a higher apparatus in the communication system.

Communication system and apparatus for providing supplementary service in femto cell

A femto cell base station includes a generating part that generates a SIP message including a terminal ID of a radio terminal and a check request for the terminal ID at a predetermined time, and a first transmitting part that transmits the SIP message generated by the generating part to a higher level apparatus in the communication system.

Communication system for checking for unauthorized use of a terminal

A femtocell base station (FAP) converts, when information concerning a SMS is received from UE (User Equipment), the received information concerning the SMS into a SIP (Session Initiation Protocol) message including the received information concerning the SMS and transmits the converted SIP message to the core network side. The femtocell base station converts, when a SIP message including information concerning the SMS is received from the core network side, the information concerning the SMS included in the received SIP message into a message that can be recognized by the UE and transmits the converted information concerning the SMS to the UE.

Growing community of inventors

Tokyo, Japan

Yasuyuki Ueda