Asahi Glass Company, Limited

Agc Inc.

Takeshi Eriguchi

Atsushi Watakabe

Toshihiro Tanuma

Yasuhiro Kunisa

Masahiro Ito

Takashi Okazoe

Kunio Watanabe

Kaori Tsuruoka

Kimiaki Kashiwagi

Shu-zhong Wang

Shunsuke Yokotsuka

Yuriko Kaida

Norihide Sugiyama

Hiroki Kamiya

Shotaro Takenobu

Hiromasa Yamamoto

Takefumi Abe

Masao Umino

Masahiro Ohkura

Masataka Yokota

Masako Nagashima

Yuichiro Ishibashi

A curable composition capable of being cured at a low temperature of from room temperature to 150&#xb0; C. is provided. The curable composition comprises a fluorinated polymer containing at least three functional groups represented by the following formula (F) and at least one curing agent selected from the group consisting of an isocyanate-type curing agent, a blocked isocyanate-type curing agent and an amino resin-type curing agent:&#x2014;RCOZ&#x2003;&#x2003;(F)(in the formula (1), Ris a fluoroalkylene group, or a fluoroalkylene group with at least two carbon atoms having an etheric oxygen atom between carbon-carbon atoms, Zis NRNRH or NROR, and R, R, Rand Rare each independently a hydrogen atom or an alkyl group.)

Curable composition, coating material, electric wire, and resin article

The present invention relates to an optical waveguide containing: a core formed by curing (A) a fluorine-containing polyarylene prepolymer having a crosslinkable functional group; and a cladding formed by curing (I) a curable composition containing (B) a compound having a molecular weight of 140 to 5,000, having a crosslinkable functional group and having no fluorine atom, and (A) a fluorine-containing polyarylene prepolymer.

Optical waveguide

A curable composition that is sufficiently cured even without a heating step at high temperature and from which a low dielectric constant cured film excellent in solvent resistance is obtained. A curable composition containing a fluorinated polyarylene prepolymer (A) having a crosslinkable functional group, a compound (B) having a number average molecular weight of from 140 to 5,000, having at least two crosslinkable functional groups and having no fluorine atoms, a copolymer (C) having the following units (c1) and (c2) and a radical polymerization initiator (D): unit (c1): a unit having a fluoroalkyl group having at most 20 carbon atoms, which may have an etheric oxygen atom between carbon atoms, and having no crosslinkable functional group; unit (c2): a unit having a crosslinkable functional group.

Curable composition and process for producing cured film

To provide a prepolymer which is excellent in heat resistance and which can form a cured product excellent in oil repellency and water repellency. A crosslinkable prepolymer having a polyaryl ether structure on its main chain, which has a crosslinkable functional group and a side chain represented by 'Rf-CH&#x2014;O&#x2014;' wherein Rf is a Cfluorinated alkyl group (which may contain an oxygen atom forming an ether bond).

Crosslinkable prepolymer, its production process and its uses

A solid polymer electrolyte material made of a copolymer comprising a repeating unit based on a fluoromonomer A which gives a polymer having an alicyclic structure in its main chain by radical polymerization, and a repeating unit based on a fluoromonomer B of the following formula (1):CF&#x2550;CF(R)SOX&#x2003;&#x2003;(1)wherein j is 0 or 1, X is a fluorine atom, a chlorine atom or OM {wherein M is a hydrogen atom, an alkali metal atom or a group of NRRRR(wherein each of R, R, Rand Rwhich may be the same or different, is a hydrogen atom or a monovalent organic group)}, and Ris a Cpolyfluoroalkylene group having a straight chain or branched structure which may contain ether oxygen atoms.

Solid polymer electrolyte material, liquid composition, solid polymer fuel cell and fluoropolymer

To provide a negative photosensitive fluorinated aromatic resin composition having a low relative permittivity, low water absorptivity, high heat resistance and high productivity. A negative photosensitive fluorinated aromatic resin composition comprising the following fluorinated aromatic prepolymer, a photosensitizer and a solvent. Here the fluorinated aromatic prepolymer is a fluorinated aromatic prepolymer which is obtained by subjecting either one or both of a compound (Y-1) having a crosslinkable functional group (A) and a phenolic hydroxyl group, and a compound (Y-2) having a crosslinkable functional group (A) and a fluorinated aromatic ring, to a condensation reaction in the presence of a HF-removing agent, with a fluorinated aromatic compound (B) represented by the following formula (1): (wherein n is an integer of from 0 to 3, each of a and b which are independent of each other, is an integer of from 0 to 3, each of Rfand Rfis a fluorinated alkyl group having at most 8 carbon atoms, and F in the aromatic ring represents that hydrogen atoms of the aromatic ring are all substituted by fluorine atoms), and a compound (C) having at least 3 phenolic hydroxyl groups, and which has crosslinkable functional groups (A) and ether bonds and has a number average molecular weight of from 1&#xd7;10to 5&#xd7;10.

Negative photosensitive fluorinated aromatic resin composition

A fluorosulfonyl group-containing compound having a high polymerization reactivity, a process for its production, a sulfonyl group-containing polymerizable monomer led from the sulfonyl group-containing compound, and a polymer obtainable by polymerizing the sulfonyl group-containing polymerizable monomer, are provided. A compound (3) is fluorinated to form a compound (4), and then, the compound (4) is subjected to a decomposition reaction to produce a compound (5). A preferred compound (5-1) of the compound (5) is thermally decomposed to produce a compound (7-1) having a high polymerization reactivity. wherein Ris a bivalent organic group such as a fluoroalkylene group, Ris a group having Rfluorinated, or the same group as R, each of Rto Rwhich are independent of one another, is a hydrogen atom, etc., each of Rto Ris a fluorine atom, etc., Ris a monovalent organic group, Ris a group having Rfluorinated, or the same group as R, E is a bivalent connecting group, Eis the same group as E, or a group having E fluorinated, Eis a group formed by scission of E, each of Xto Xis a hydrogen atom, etc., and each of Xto Xis a fluorine atom, etc.

Processes for producing a fluorosulfonyl group-containing compound and a compound LED from the fluorosulfonyl group-containing compound

A crosslinkable fluorinated aromatic prepolymer which is capable of forming a cured product having high transparency, a low relative permittivity, high heat resistance, low birefringence and high flexibility, and which is obtained by subjecting a compound (Y-1) having a polymerizable double bond (A) and/or a phenolic hydroxyl group and a compound (Y-2) having a polymerizable double bond (A) and a fluorinated aromatic ring, to a condensation reaction in the presence of a HF-removing agent, with a particular fluorinated aromatic compound (B) and a compound (C) having at least 3 phenolic hydroxyl groups, the respective phenolic hydroxyl groups not being present in the same aromatic ring, and which has polymerizable double bonds (A) and ether bonds and has a number average molecular weight of from 1&#xd7;10to 5&#xd7;10.

Crosslinkable fluorinated aromatic prepolymer and its uses

A polymer electrolyte fuel cell comprising a membrane-form polymer electrolyte, a cathode disposed on one side of the polymer electrolyte, and an anode disposed on the other side of the polymer electrolyte, wherein the cathode comprises a catalyst and an ion exchange resin, and the ion exchange resin is made of a polymer comprising the following segments A and segments B: Segments A: segments made of a polymer having sulfonic acid groups; and Segments B: segments made of a fluoropolymer having substantially no ion exchange groups.

Block polymer, process for producing a polymer, and polymer electrolyte fuel cell

A fluorosulfonyl group-containing compound having a high polymerization reactivity, a process for its production, a sulfonyl group-containing polymerizable monomer led from the sulfonyl group-containing compound, and a polymer obtainable by polymerizing the sulfonyl group-containing polymerizable monomer 

Processes for producing a fluorosulfonyl group-containing compound and a compound led from the fluorosulfonyl group-containing compound

In 100 parts by weight of a composition, from 2 to 89 parts by weight of a fluorinated polymer having a fluorine content of at least 65 wt %, from 97 to 10 parts by weight of a non-fluorinated polymer and from 1 to 35 parts by weight of a dispersing agent having a carboxylic acid group or its derivative, or a sulfonic acid group or its derivative, are blended.

Growing community of inventors

Kanagawa, Japan

Takeshi Eriguchi