Agc Inc.

Asahi Glass Company, Limited

Motoshi Aoyama

Taiki Hoshino

Yusuke Tomiyori

Keigo Matsuura

Hiromasa Yamamoto

Kiyotaka Takao

Eiichiro Anraku

Kenji Ishizeki

Yutaka Furukawa

Masahiro Ito

Makoto Uno

Jumpei Nomura

Hikaru Ono

Toyokazu Enta

Naoki Katsuki

To provide a method capable of separating a monofunctional species, bifunctional species, etc. of a fluorinated ether compound having a polyfluoropolyether chain and a predetermined functional group in good yield and with high separation performance. A separation method for separating a compound represented by the formula (1) and a compound represented by the formula (2) from a mixture containing them by chromatography using a stationary phase and a mobile phase, wherein the mobile phase contains at least one type of specific solvent selected from a hydrofluoroolefin, a hydrochlorofluoroolefin, a chlorofluoroolefin, a cyclic hydrofluoroolefin, a cyclic hydrochlorofluoroolefin, a cyclic chlorofluoroolefin, a cyclic hydrofluorocarbon, a cyclic hydrochlorofluorocarbon, a cyclic chlorofluorocarbon and a perfluoroketone:A-(OX)—O—Z—(R)  Formula (1)(R)—Z—(OX)—O—Z—(R)  Formula (2)

Separation method

The composition containing a compound represented by the formula (1) and a compound represented by the formula (2),R—(OX)—O—R—Y—[Si(R)L]  (1)[L(R)Si]—Y—R—(OX)—O—R—Y—[Si(R)L]  (2),where Rto R, Xto X, Yto Y, Rto R, Lto L, m1 to m2, n1 to n3, and g1 to g3 are as defined in the disclosure. An article, containing a substrate and a surface layer formed of the composition on the substrate.

Composition containing a fluorinated ether compound

To provide an article with a water and oil repellent layer, which is excellent in friction resistance. The article with a water and oil repellent layer of the present invention comprises a substrate, a water and oil repellent layer consisting of a hydrolyzed condensation product of a compound represented by the formula [A-(OX)-]Y[—Si(R)L], and a silicon oxide layer containing alkali metal atoms that exists between the substrate and the water and oil repellent layer, wherein the average value of the concentration of alkali metal atoms in a predetermined area in the silicon oxide layer is at least a predetermined value. In the formula, X is a fluoroalkylene group, m is at least 2, j, g, and k are at least 1, and Yand Yare linking groups, R is a monovalent hydrocarbon group, L is a hydrolyzable group or hydroxy group, n is 0 to 2, A is a perfluoroalkyl group or —Y[—Si(R)L]. When A is —Y[—Si(R)L], j is 1, and when A is a perfluoroalkyl group and j is 1, g is at least 2.

Article with water and oil repellent layer

To provide a fluorinated ether compound, a fluorinated ether composition and a coating liquid excellent in chemical resistance, an article having a surface layer excellent in chemical resistance and a method for producing it, and a method for producing a fluorinated ether compound excellent in chemical resistance. A fluorinated ether compound which has a first partial structure represented by the following formula (1) and a second partial structure represented by the following formula (2), and

Fluorine-containing ether compound, fluorine-containing ether composition, coating liquid, article, method for producing article, and method for producing fluorine-containing compound

To provide a fluorinated ether compound, a fluorinated ether composition and a coating liquid capable of forming a surface layer excellent in initial water/oil repellency, fingerprint stain removability, abrasion resistance, light resistance and chemical resistance, an article having a surface layer, and a method for producing it. A fluorinated ether compound represented by A-O&#x2014;(RO)&#x2014;R-Z-Q(R), wherein A is a Cperfluoroalkyl group, Ris a linear fluoroalkylene group, m is an integer of from 2 to 500, Ris a linear fluoroalkylene group, Zis a single bond, &#x2014;(CRR)&#x2014; (wherein Rand Rare a hydrogen atom, a Cmonovalent organic group or the like, and c is an integer of from 1 to 10), a specific bond or a bivalent organic group having a specific bond, Qis a group having a (b+1) valent ring, Ris a monovalent organic group having at least one hydrolyzable silyl group, and b is an integer of at least 2.

Fluorinated ether compound, fluorinated ether composition, coating liquid, article and its production method

Processes for producing a fluorinated ether compound are provided by which fluorinated ether compound capable of imparting excellent water/oil repellency, to a substrate surface or a hard coat layer can be easily produced in high yield. A process comprising reacting R(CF)&#x2014;CFOC(&#x2550;O)Ror R(CF)&#x2014;C(&#x2550;O)Xwith HN(&#x2014;RCH&#x2550;CH)to obtain R(CF)&#x2014;C(&#x2550;O)N(&#x2014;RCH&#x2550;CH)and a process comprising obtaining the above product and reacting the product with HSiRLto obtain R(CF)&#x2014;C(&#x2550;O)N(&#x2014;RCHCHSiRL)wherein Ris a linear polyfluoroalkyl group having at least two carbon atoms and at least one etheric oxygen atom between carbon atoms, Ris a Cperfluoroalkyl group or the like, Xis a halogen atom, Ris an alkylene group, a is an integer of from 1 to 5, Ris a monovalent hydrocarbon group, L is a hydrolyzable group, and n is an integer of from 0 to 2.

Processes for producing fluorinated ether compounds

To provide a process for producing a desired perfluorinated product at a high yield in a fluorination reaction of a partially fluorinated ester. A perfluorinated compound (4) is obtained by fluorinating in a liquid phase a compound (3) (wherein the fluorine content is at least 30 mass %) obtained by reacting a compound (1) and a compound (2), wherein the compound (1) is HOCH&#x2014;R&#x2014;CHOH, the compound (2) is XC(&#x2550;O)&#x2014;C(R)(R)(R), Ris a bivalent saturated hydrocarbon group or the like which has no hetero atom such as an etheric oxygen atom, Xis a halogen atom, and &#x2014;C(R)(R)(R) is a branched group.

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Chiyoda-ku, Japan

Motoshi Aoyama