Shin-etsu Chemical Co., Ltd.

Shin-etsu Chemical Company Co., Ltd.

Noriyuki Koike

Takashi Matsuda

Shinichi Sato

Hirofumi Kishita

Yasunori Sakano

Masatoshi Arai

Katsuya Takemura

Yuji Yamane

Koichi Yamaguchi

Toshio Takago

Yasuo Tarumi

Yasushi Yamamoto

Kouichi Yamaguchi

Hiroshi Inomata

Hiromasa Yamaguchi

Hideki Fujii

Masayuki Oyama

Tsuneo Kimura

Takafumi Sakamoto

Kenichi Fukuda

Mikio Shiono

Hitoshi Kinami

Ryusuke Sakoh

Shinichi Satoh

Akio Takaoka

Kouichi Ishida

Hideyoshi Yanagisawa

Yasuhisa Osawa

Hidenori Koshikawa

Kouji Takano

Nobuyuki Kobayashi

Kazuyuki Takewaki

Hisatoshi Komori

Yuii Yamane

Horishi Inomata

Shuzi Suganuma

Hiroyuki Yasudo

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 perfluoropolyether-modified polysilazane of silazane units of formula (1), where Q is a divalent organic group, p and q are an integer of at least 1, r and s are an integer of at least 0, and x is an integer of 1 to 3. A surface treating agent comprising the polysilazane is improved in water/oil repellency, surface slip and smear wipe-off.F(CFO)(CFCFO)(CFCFCFO)(CFCFCFCFO)&#x2014;CF-Q-Si(NH)&#x2003;&#x2003;(1)

Perfluoropolyether-modified polysilazane, making method, surface treating agent, and treated article

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 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.

Fluorochemical surface treating agent and article treated therewith

The invention provides a surface treatment agent wherein a fluorooxyalkylene group-containing polymer or a fluorooxyalkylene group-containing polymer composition comprising the polymers, which is controlled of a temperature range of vaporization of fluorooxyalkylene group-containing polymer(s). The fluorooxyalkylene group-containing polymer has a fluorooxyalkylene structure represented by &#x2014;(OCF2)p(OCF2CF2)q&#x2014; and hydrolysable groups bond to a silicon atom represented by the formula at least one terminal. The polymer composition shows a decrease of 75% or more in weight, relative to the total weight of the polymer, in a temperature range of from 150 to 350 degrees C. when this is heated at a rate of 2 degrees C. per minute and a pressure of 0.1 Pa or less. The present surface treatment agent forms a coating having water- and oil-repellency and scratch resistance regardless of a vapor deposition conditions, in particularly by a vapor deposition at a mild temperature such as 350 degrees C.

Fluorine-containing surface treatment agent and an article treated with the same

There is disclosed a fluorine-based surface treating agent for vapor deposition comprising (A) a hydrolyzable group-containing silane modified with a polymer containing a fluorooxyalkylene group and/or a partial hydrolytic condensate, and (B) a polymer containing a fluorooxyalkylene group having a higher weight average molecular weight than component (A), wherein components (A) and (B) are mixed in a weight ratio of from 6:4 to 9:1.

Fluorine-based surface treating agent for vapor deposition and article finished with the surface treating agent by vapor deposition

A fluorooxyalkylene group-containing polymer composition including a liner fluorooxyalkylene group-containing polymer represented by the formula (1) which has a hydrolysable group at a terminal and is hereinafter called 'one-terminal modified polymer', and a liner fluorooxyalkylene group-containing polymer represented by the following formula (2) which has hydrolysable groups at the both terminals and is hereinafter called 'both-terminal modified polymer', wherein an amount of the both-terminal modified polymer is 0.1 mole % or more and less than 10 mole %, relative to a total mole of the one-terminal modified polymer and the both-terminal modified polymer.

Fluorooxyalkylene group-containing polymer composition, a surface treatment agent comprising the same and an article treated with the agent

A fluorine-containing curable composition which is less viscous, and which can produce a cured article having excellent heat resistance, chemical resistance, solvent resistance, and mechanical strength is provided. The fluorine-containing curable composition comprises (a) 100 parts by weight of a straight chain fluorine-containing polymer having at least two alkenyl groups per molecule represented by the following formula (1): said polymer having a number average molecular weight of 1,000 to 100,000; (b) a fluorine-containing organosilicon compound having at least 2 hydrogen atoms bonded to the silicon atom per molecule at an amount such that molar ratio of hydrosilyl group (SiH group) in the component (b) to the alkenyl group in the component (a) is in the range of 0.4 to 5.0; (c) a catalytic amount of a hydrosilylation catalyst; and (d) 1 to 100 parts by weight of a silica filler.

Fluorine-containing curable composition and rubber article

A curable perfluoropolyether gel composition is provided. The composition comprises (A) a straight chain fluorine-containing polymer represented by the following formula (1): (B) a polyfluoromonoalkenyl compound containing one alkenyl group per molecule and having a perfluoropolyether structure in its backbone, (C) an organosilicon compound containing at least two hydrogen atoms bonded to the silicon atom per molecule, and (D) a hydrosilylation catalyst. The composition can be produced into a cured product having excellent heat resistance, solvent resistance, chemical resistance, weatherability, releasability, water repellency, oil repellency, and the like as well as an improved acid resistance.

Curable perfluoropolyether gel composition and gel product produced by using cured perfluoropolyether gel composition

An object of the present invention is to provide a fluorooxyalkylene group-containing polymer composition, which yields a coating having excellent adhesior to a substrate, good water- and oil-repellency, a low dynamic friction coefficient, good releasing property, good abrasion resistance and good stain resistance, and to provide a surface treatment agent comprising the same. The present inventors have found that a composition comprising a fluorooxyalkylene group-containing polymer having a fluorinated group and a hydrolyzable group at each terminal and a fluorooxyalkylene group-containing polymer having hydrolyzable groups at both terminals can form a coating which has excellent water- and oil-repellency, a low dynamic friction coefficient, good releasing property, good abrasion resistance, and good stain resistance.

A coating composition comprising a fluorine-containing silicon compound represented by the following formula (1) 

Coating composition and a coating therefrom having waterdrop sliding property

The present invention relates to a perfluoropolyether-modified polysiloxane represented by general formula (1): 

Perfluoropolyether-modified polysiloxane, a method for preparing the same and a defoaming agent comprising the same

An adhesive composition is provided comprising (A) a fluorinated amide compound containing at least two vinyl groups and having a polyfluoro structure, (B) a fluorinated organosilicon compound containing a fluorinated organic group, at least two SiH groups, and an alkyl, aryl or aralkyl group, and (C) a platinum catalyst, and (D) an organosiloxane containing a SiH group and an epoxy and/or trialkoxysilyl group. The composition is cured on brief heating into a product which achieves adhesion to various substrates and has solvent resistance, chemical resistance, heat resistance, low-temperature properties, low moisture permeability, electric insulation, and acid resistance.

Adhesive composition

The present invention relates to a photo-curable perfluoropolyether group-containing acrylate compound represented by the following formula (1):X&#x2014;[Z&#x2014;Rf&#x2014;Z&#x2014;X]&#x2014;Z&#x2014;Rf&#x2014;Z&#x2014;X&#x2003;&#x2003;(1)  Xis a group represented by the following formula (5): and Z is a divalent organic group.

Perfluoropolyether group-containing acrylate compound

The purpose of the present invention is to provide a surface treating agent which provides a surface where stain does not easily adhere, does not stand out and is easily wiped off. The present invention is a perfluoropolyether group-containing polyorganosiloxane represented by the following formula (1) and a surface treating agent comprising the same,A(R)Z-Q-Rf-Q-Z(R)A&#x2003;&#x2003;(1) 

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Takasaki, Japan

Noriyuki Koike