Shin-etsu Chemical Co., Ltd.

Takashi Matsuda

Shinichi Sato

Noriyuki Koike

Hirofumi Kishita

Yuji Yamane

Ryusuke Sakoh

Masatoshi Arai

Toshio Takago

Yasuo Tarumi

Yasuhisa Osawa

Yasushi Yamamoto

Mikio Shiono

Yasunori Sakano

Hitoshi Kinami

Lisa Katayama

Takafumi Sakamoto

Kenichi Fukuda

Koichi Yamaguchi

Kouichi Yamaguchi

Tsuneo Kimura

Hiroshi Inomata

Hirokazu Yamada

Kouji Takano

Shinichi Satoh

Makoto Sato

Masayuki Oyama

Hiromasa Yamaguchi

Hideki Fujii

Shuji Suganuma

Takeshi Hashimoto

Nobuyuki Kobayashi

Mitsuo Muto

Seiya Mori

Kouichi Ishida

Horishi Inomata

Tomofumi Sutou

This water-repellent, oil-repellent member is obtained via a method comprising: a step for wet-coating a substrate surface with a solution containing an organic silicon compound comprising multiple silanol groups and a solvent; a step for drying the solvent to form a primer layer; a step for wet-coating the primer layer with a solution containing a fluorine-containing compound and a solvent, followed by drying the solvent, or dry-coating with the fluorine-containing compound obtained by evaporating the solvent from the solution; and a step for curing the fluorine-containing compound to form a water-repellent, oil-repellent layer. The water-repellent, oil-repellent member is obtained by providing, on various substrates, a primer layer of a specific thickness containing, as a main component, an organic silicon compound comprising multiple silanol groups, followed by providing, on the primer layer, a water-repellent, oil-repellent layer of a specific thickness containing, as a main component, the cured fluorine-containing compound according to the above mentioned method. It is thus possible to stably and simply form a water-repellent, oil-repellent coating exhibiting superior abrasion resistance on various substrates, and the primer layer and water-repellent, oil-repellent layer can be applied using a room-temperature (25° C.) process.

Water-repellent, oil-repellent member and method for manufacturing water-repellent, oil-repellent member

This fluorine-containing coating agent composition contains: (A) an organic silicon compound containing a hydrolyzable group or a hydroxy group modified by a fluorooxyalkylene group-containing polymer residue, and/or a partial (hydrolyzed) condensate thereof; and (B) an organic silicon compound containing a polyether group and a hydrolyzable group or a hydroxy group modified by a fluorooxyalkylene group-containing polymer residue, and/or a partial (hydrolyzed) condensate thereof, wherein the mixture mass ratio of component (A) and component (B) is 15:85-85:15. When the composition is applied as a surface treatment agent, the surface treatment agent containing the fluorine-containing coating agent composition can form a cured coating film which has excellent water repellency and oil repellency, and which has both excellent steel wool abrasion resistance and eraser rubber abrasion resistance.

Fluorine-containing coating agent composition, surface treatment agent containing said composition, and article

Provided is a water-repellent member in which a silica layer having a specific thickness and mainly composed of silica nanoparticles is provided on the outer surfaces of various substrates, and then a water- and oil-repellent layer having a specific thickness and containing a cured product of a fluorine-containing organosilicon compound as a main component is provided on the outer surface of the silica layer. The water-repellent member is obtained by a method comprising: a step for wet coating a dispersion containing silica nanoparticles and a solvent onto the outer surface of a substrate; a step for drying and removing the solvent from the dispersion; a step for wet coating a solution containing a fluorine-containing organosilicon compound and a solvent onto the outer surface of a silica layer formed by drying and removing the solvent; and a step for drying and removing the solvent from the solution to cure the fluorine-containing organosilicon compound. According to the water-repellent member, a water- and oil-repellent coating having excellent abrasion resistance can be reliably and easily applied to various substrates.

Water-repellent member and method for manufacturing water-repellent member

This surface treatment agent using a compound represented by formula (1) or (2) can, even without having a hydrolyzable group, form a water repellent and oil repellent layer having excellent abrasion resistance under mild conditions such as at room temperature. [Rf represents a monovalent or divalent fluorooxyalkylene group-containing polymer residue, Yand Yeach represent a single bond or a divalent hydrocarbon group, Q represents a group that has a Si-containing structure having a valence of 2-4, Si, or C, X represents an epoxy-containing group, k represents 0-2, m represents 1-5, n represents 1-3, Z represents H, &#x2014;SiR(R represents an alkyl group or a phenyl group), or &#x2014;W-Q'-W&#x2014;X&#x2032; (X&#x2032; represents X or &#x2014;SiR, Wand Weach represent a single bond or a divalent hydrocarbon group, Q&#x2032; represents a divalent group having a Si-containing structure), and &#x3b1; represents 1 or 2].

Fluoropolyether group-containing polymer-modified organic silicon compound, surface treatment agent, and article

Provided is an antireflective member that has a water- and oil-repellent layer on a multi-layered antireflective layer and is capable of exhibiting excellent surface lubricity, water- and oil-repellent properties, and durability. The surface of the multi-layered antireflective layer on a base material has a root-mean-square surface roughness of 0.8 nm to 2.0 nm. The water- and oil-repellent layer has a thickness of 1 to 30 nm and is a cured product of water- and oil-repellents having as principal components a fluorooxyalkylene group-containing polymer modified organosilicon compound with the numerical average molecular weight of 4,500 to 10,000 of a fluoropolymer part and/or partial hydrolysis condensate thereof.

Antireflective member and method of manufacture therefor

By using this organosilane compound represented by formula (1), a surface treatment agent that contains said (hydrolyzable) organosilane compound and/or a partial (hydrolysis) condensate thereof can form a cured film which exhibits excellent lipophilic properties and has a refractive index similar to the refractive index of sebum. (A is any one of &#x2014;C(&#x2550;O)OR, &#x2014;C(&#x2550;O)NR, &#x2014;C(&#x2550;O)SRand &#x2014;P(&#x2550;O)(OR); Ris a hydrogen atom, an alkyl group, an aryl group or an aralkyl group; Y is a divalent organic group; R is an alkyl group or a phenyl group; X is a hydroxyl group or a hydrolyzable group; and n is 1-3.)

Lipophilic group-containing organosilane compound, surface treatment agent and article

A fluorochemical coating composition is provided comprising (A) a hydrolyzable group-containing silane modified with a fluorooxyalkylene-containing polymer and (B) a fluorooxyalkylene-containing polymer having an average molecular weight not higher than the average molecular weight of component (A) in a weight ratio (A)/(B) of 40/60 to 95/5. The composition forms on a substrate a water/oil repellent layer which does not detract from the visibility of the substrate.

Fluorochemical coating composition and article treated therewith

A surface treatment agent which comprises a fluoropolyether-group-containing polymer represented by the following formula (1) or (2)Rf&#x2014;[N(V)(E)]&#x2003;&#x2003;(1)Rf-[Q-(G)-(E')-B]&#x2003;&#x2003;(2)and/or a product of partial (hydrolytic) condensation of the polymer. The surface treatment agent forms a cured coating film excellent in terms of water and oil repellency and resistance to abrasion with erasers.(In formulae (1) and (2), Rfis a mono- or divalent polymer residue containing a fluorooxyalkylene group; N is C, Si, N, or a tri- to octavalent group optionally substituted by F; V is a monovalent group containing a hydroxy group or hydrolyzable group at the terminal; E is a monovalent group containing an oxyalkylene group; &#x3b1; is 1 or 2; &#x3b2; and &#x3b3; are each 1-6, and &#x3b2;+&#x3b3; is 2-7; Q is a single bond or a divalent group; G is a divalent group containing a hydroxy group or hydrolyzable group; E&#x2032; is a divalent group containing an oxyalkylene group; B is H, an alkyl group, or a halogeno; &#x3b4; is 0-10; and &#x3b5; is 1-10.)

Fluoropolyether-group-containing polymer, surface treatment agent, and article

A fluoropolyether-containing polymer-modified silane having formula (1) is provided wherein Rf is a fluorooxyalkyl or fluorooxyalkylene-containing polymer residue, Y is a divalent to hexavalent hydrocarbon group, R and R' are C-Calkyl or phenyl, X and X&#x2032; are hydroxyl or a hydrolyzable group, n is an integer of 1 to 3, a is an integer of 0 to 3, m is an integer of 1 to 5, and &#x3b1; is 1 or 2. A surface treating agent comprising the silane has storage stability and cures into a water/oil repellent layer having weatherability. 

Fluoropolyether-containing polymer-modified silane, surface treating agent, and article

A fluoropolyether-containing polymer-modified silane having (1) is provided wherein Rf is a fluorooxyalkyl or fluorooxyalkylene-containing polymer residue, Y is a divalent to hexavalent hydrocarbon group, R is C-Calkyl or phenyl, X is a hydrolyzable group, n is an integer of 1 to 3, m is an integer of 1 to 5, and &#x3b1; is 1 or 2. A surface treating agent comprising the silane or partial hydrolytic condensate thereof cures under mild conditions into a water/oil repellent layer having abrasion resistance, weatherability and low dynamic friction. 

An object of the present invention is to provide a method for efficiently and highly selectively preparing a composition comprising perfluoropolyether having a hydroxyl group at one terminal at a higher ratio. The present invention provides a method for increasing a ratio of perfluoropolyether having a hydroxyl group at one terminal, relative to a total amount of the perfluoropolyether having a hydroxyl group at one terminal and perfluoropolyether having hydroxyl groups at both terminals in a composition comprising these perfluoropolyethers, wherein the method comprises a step of subjecting the composition to chromatography in which a moving phase is supercritical or subcritical state carbon dioxide of the specific temperature and the specific pressure, and a stationary phase is silica gel to thereby collect a fraction containing the perfluoropolyether having a hydroxyl group at one terminal at a higher ratio. Further, present invention provides for increasing a ratio of perfluoropolyether having a hydroxyl group at one terminal, relative to a total amount of the perfluoropolyether having a hydroxyl group at one terminal, perfluoropolyether having hydroxyl groups at both terminals and perfluoropolyether having no hydroxyl group at any terminal perfluoropolyether, in a composition comprising these perfluoropolyethers, wherein the method comprises a step of subjecting the composition to chromatography in which a moving phase is supercritical or subcritical state carbon dioxide of the specific temperature and the specific pressure, and a stationary phase is silica gel to thereby collect a fraction containing the perfluoropolyether having a hydroxyl group at one terminal at a higher ratio.

Method for preparing a composition comprising perfluoropolyether having a hydroxyl group at one terminal

A water/oil repellent treatment agent which includes a specific polymer-modified silane having a fluorooxyalkylene structure on the main chain and a hydrolyzable group at the end of the molecular chain, and/or a partial (co)hydrolyzate/condensate thereof, has a percent weight loss following one hour of exposure at 250&#xb0; C. of 10% or less. The treatment forms a layer having excellent water and oil repellency, scuff resistance and mold release properties even when heated to 250&#xb0; C. or more.

Water/oil-repellent treatment agent having heat resistance, method of preparation, and treated article

A fluoropolyether-containing polymer-modified silane having a hydroxyl group protected with a carbonyl, sulfonyl or phosphoryl group may be synthesized without forming by-products.

Fluoropolyether-containing polymer-modified silane

A fluoropolyether-containing polymer-modified silane has general formula (1) wherein Rf is a monovalent fluorooxyalkyl or divalent fluorooxyalkylene-containing polymer residue, Y is a divalent to hexavalent hydrocarbon group which may have a silicon atom and/or a siloxane bond, W is a divalent to hexavalent hydrocarbon group which may have a silicon atom and/or a siloxane bond, R is independently an alkyl of 1 to 4 carbon atoms or phenyl, X is independently hydroxyl or a hydrolyzable group, the letters n, a and m are respectively integers from 1 to 3, 1 to 5 and 1 to 5, and &#x3b1; is 1 or 2. A surface treating agent containing this silane and/or a partial (hydrolytic) condensate thereof, when applied to an article, forms a coat of excellent water/oil repellency and abrasion resistance.

Fluoropolyether-containing polymer-modified silane, surface treating agent, and treated article

A fluorochemical surface treating agent comprising a hydrolyzable group-containing silane modified with a fluorooxyalkylene-containing polymer and/or a partial hydrolytic condensate thereof forms a water/oil repellent layer having chemical resistance and mar resistance.

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Annaka, Japan

Takashi Matsuda