Shin-etsu Chemical Co., Ltd.

Shin-etsu Chemical Company Co., Ltd.

Yuji Yamane

Noriyuki Koike

Takashi Matsuda

Ryusuke Sakoh

Hirofumi Kishita

Koichi Yamaguchi

Lisa Katayama

Yasunori Sakano

Shinichi Sato

Seiya Mori

Hisatoshi Komori

Hirohumi Kishita

A surface treatment agent that comprises a fluoropolyether-group-containing polymer represented by general formula (1), which has a hydroxylated silyl group or a hydrolyzable silyl group, and/or a product of partial (hydrolytic) condensation of the polymer. The surface treatment agent is capable of forming cured coating films which are excellent in terms of water and oil repellency and resistance to wear by steel wool and have a small water-sliding angle.Rf—[CH(V)]  Formula (1):(In the formula, Rf is a mono- or divalent residue of a polymer including a fluorooxyalkylene group, the V moieties each independently are a monovalent group having a hydroxylated silyl group or hydrolyzable silyl group at the end and having no polar group besides the hydroxylated silyl group or hydrolyzable silyl group, and α is 1 or 2.).

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

A release film for pressure-sensitive silicone adhesives which comprises: any of various bases; a primer layer (first layer) disposed on at least one surface of the base, the primer layer having a specific thickness and comprising as a main component an organosilicon compound having a plurality of silanol groups in the molecule; and a release layer (second layer) disposed on the outer surface of the primer layer, the release layer having a specific thickness and comprising as a main component a cured object obtained from a hydrolyzable fluorinated compound. A release coating film having excellent releasing properties can be stably and easily imparted to various bases, and the primer layer and the release layer can be formed even by room-temperature (25° C.) application.

Release film for pressure-sensitive silicone adhesive and production method therefor

The invention provides a water- and oil-repelling member having a primer layer as a first layer on at least one surface of a base material and further having a water- and oil-repelling layer as a second layer on the outer surface of the primer layer. The primer layer comprises a layer containing nano-diamonds and having a film thickness of 0.5 to 500 nm, the main component being an organic silicon compound having a plurality of silanol groups within a molecule. The water- and oil-repelling layer comprises a layer having a film thickness of 0.5 to 30 nm, the main component being a cured product of a hydrolysable fluorine-containing compound. The water- and oil-repelling member can stably and simply impart a water- and oil-repelling coat having excellent abrasion resistance to various base materials. In addition, the primer layer and the water- and oil-repelling layer can be coated even in a room-temperature (25° C.) process.

Water- and oil-repelling member and water- and oil-repelling member production method

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 water-repellent, oil-repellent member is obtained via, inter alia, a method having: a step for wet-coating a substrate surface with a solution that contains a solvent and an organosilicon compound comprising multiple silanol groups in the molecule; a step for drying the solvent to form and laminate a primer layer on the substrate surface; a step for wet-coating the outer surface of the primer layer with a solution containing a hydrolyzable fluorine-containing compound and a solvent, and subsequently drying the solvent, or dry-coating the outer surface of the primer layer with a hydrolyzable fluorine-containing compound obtained by evaporating the solvent from the solution; and a step for curing the hydrolyzable fluorine-containing compound to form and laminate a water-repellent, oil-repellent layer on the outer surface of the primer layer. The water-repellent, oil-repellent member is obtained by providing, on various substrates: a primer layer of a specific thickness that contains, as a main component, an organosilicon compound having multiple silanol groups in the molecule; and, on the outer surface of the primer layer, a water-repellent, oil-repellent layer of a specific thickness that contains, as a main component, the cured hydrolyzable fluorine-containing compound. The water-repellent, oil-repellent member makes it possible for a water-repellent, oil-repellent coating exhibiting superior abrasion resistance and antistatic properties to be stably and straightforwardly formed on various substrates.

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

This surface treatment agent can form a water repellent/oil repellent layer having particularly excellent wear durability, weather resistance, and alkali resistance, and contains a fluorinated coating agent composition containing: (A) one or more selected from hydroxy group- or hydrolyzable group-containing silanes and siloxanes modified with a fluorooxyalkylene group-containing polymer, and partial (hydrolyzed) condensates thereof, and (B) a fluorooxyalkylene group-containing polymer-modified polysilazane formed of silazane units modified with a fluorooxyalkylene group-containing polymer, wherein the number-average molecular weight of fluorooxyalkylene group-containing polymer residues in the component (A) is 1,500-10,000, the number-average molecular weight of fluorooxyalkylene group-containing polymer residues in the silazane units modified with the fluorooxyalkylene group-containing polymer in the component (B) is 500-6,000, and the mixed mass ratio between the component (A) and the component (B) is 10:90 to 90:10.

Fluorinated coating agent composition, surface treatment agent, 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.)

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. 

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Annaka, Japan

Yuji Yamane