Daikin Industries, Ltd.

Kenichi Katsukawa

Hisashi Mitsuhashi

Yuzo Komatsu

Haruhiko Mohri

Takashi Kanemura

Masatoshi Nose

Tomohiro Yoshida

Takashi Nomura

Tsuneo Yamashita

Takashi Namikawa

Masato Naitou

Atsushi Suzuki

Shinya Takano

Kensuke Mohara

Takeshi Maehira

Yoshimi Motonari

A fluoropolyether group-containing compound represented by formula (1) or (2) below:

Fluoropolyether group-containing compound

A surface-treating agent including at least one perfluoro(poly)ether group containing silane compound of any of the formulae (A1), (A2), (B1), (B2), (C1) and (C2): wherein, each of symbols is as defined in the specification, and wherein a proportion of the perfluoro(poly)ether group containing silane compound having a molecular weight of 3,000 or less in the perfluoro(poly)ether group containing silane compounds of any of the above general formulae is 9 mol % or less.

Surface treatment agent

The present invention provides compound of formulae (A1), (A2), (B1), (B2), (C1) and (C2) which can form a layer having water-repellency, oil-repellency and antifouling property as well as high friction durability: wherein each symbols are as defined in the specification.

Modified fluorooxymethylene group-containing perfluoropolyether

A surface-treating agent including at least one perfluoro(poly)ether group containing silane compound of the formula (1): wherein each of symbols is as defined herein, wherein a number average molecular weight of the perfluoro(poly)ether group containing silane compound is 3000 or more and 6000 or less, and wherein 80 mol % or more of the perfluoro(poly)ether group containing silane compound contained in the surface-treating agent is a compound wherein g is 2 or more.

Surface treating agent including perfluoro(poly)ether-group-containing silane compound

A surface-treating agent including at least one perfluoro(poly)ether group containing silane compound of the formula (1): wherein Rf, PFPE, Z, Q, R, R, X, Y, e, f, g, h and n are as defined herein. Also disclosed is a process for preparing the compound of formula (1).

A process for producing a perfluoropolyether acyl fluoride which includes reducing a peroxyperfluoropolyether by using a formyl group-containing compound in the presence of a transition metal catalyst.

Method for producing perfluoropolyether acyl fluoride

Provided is a process for the production of a fluorine-containing block copolymer, which suppresses the formation of a homopolymer as a by-product and which, regardless of whether the chain transfer constant of the iodine end is large or small, achieves nearly 100% conversion into a block copolymer. The process is characterized by reacting (A) a fluorine-containing polymer which has an iodine atom or a bromine atom at either or both terminals of the backbone chain and/or at a side-chain terminal with (M) a radical-polymerizable monomer in the presence of (C) a sulfur compound represented by general formula (2): (Y)HSO(wherein Yis a mono- or divalent metal ion or an ammonium ion; and n is an integer of 0 to 2).

Process for production of fluorine-containing block copolymer

Provided is a process for the production of a fluorine-containing block copolymer, which suppresses the formation of a homopolymer as a by-product and which, regardless of whether the chain transfer constant of the iodine end is large or small, achieves nearly 100% conversion into a block copolymer. The process is characterized by reacting (A) a fluorine-containing polymer which has an iodine atom or a bromine atom at either or both terminals of the backbone chain and/or at a side-chain terminal with (M) a radical-polymerizable monomer in the presence of (C) a sulfur compound represented by general formula (2): (Y)HSO(wherein Yis a mono- or di-valent metal ion or an ammonium ion; and n is an integer of 0 to 2).

The present invention provides a process for preparing 2-chloro-3,3,3-trifluoropropene including subjecting, in the absence of a catalyst, at least one chlorine-containing compound selected from the group consisting of chloropropane represented by formula (1): CClXCHClCHCl, wherein each X is the same or different and each represents Cl or F, chloropropene represented by formula (2): CClYCCl&#x2550;CH, wherein each Y is the same or different and each represents Cl or F, and chloropropene represented by formula (3): CZ&#x2550;CClCHCl, wherein each Z is the same or different and each represents Cl or F, to a reaction with hydrogen fluoride under heating in a gas phase. According to the present invention, 2-chloro-3,3,3-trifluoropropene (HCFC-1233xf) can be effectively prepared by an easy and economically advantageous process that is suitable for industrial scale production.

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Settsu, Japan

Kenichi Katsukawa