Asahi Glass Company, Limited

Agc Inc.

Nobuyuki Otozawa

Taiki Hoshino

Daisuke Jomuta

Toyomichi Shimada

Minako Shimada

Kazunori Sugiyama

Yuuichi Oomori

Daisuke Shirakawa

Takashige Maekawa

Akira Isobe

Eisuke Murotani

Naoko Shirota

Naoko Sumi

Chikaya Tamitsuji

Kiyotaka Takao

Yusuke Takahira

Akihiko Asakawa

Kuniko Okano

Akinobu Kunimoto

Ryuichi Sugimoto

To provide a method for surface modification of a fluororesin, that enables graft polymerization at a lower temperature than a conventional method. A method for surface modification of a fluororesin, which comprises reacting a fluororesin with a radical reactive compound in the presence of an organometallic compound.

Method for surface modification of fluororesin

The present invention relates to a method for producing a 1,3-dioxolane compound represented by formula 1, the method containing step (a), in which hexafluoroacetone monohydrate is brought into contact with a metal fluoride, step (b), in which fluorine gas is brought into contact, and step (c), in which an olefin compound represented by formula 2 is brought into contact. In formulae 1 and 2, Xto Xeach independently represent a hydrogen atom, fluorine atom, chlorine atom, or trifluoromethyl group. 

Production methods for 1,3-dioxolane compound and perfluoro(2,2-dimethyl-1,3-dioxole)

Provided is a fluorinated ether compound capable of imparting excellent antifouling properties such as oil-based ink repellency, fingerprint stain removability, to a hard coating layer; a composition for forming a hard coating layer, and an article having an antifouling hard coating layer formed from the composition. The fluorinated ether compound has either a poly(oxyperfluoroalkylene) chain having a repeated unit that includes a Coxyperfluoroalkylene group and a Coxyperfluoroalkylene group, bonded to each other, or a poly(oxyperfluoroalkylene) chain having a repeated unit that contains a Coxyperfluoroalkylene group and a different oxyperfluoroalkylene group, bonded to each other, a linking group bonded to a first terminal of the poly(oxyperfluoroalkylene) chain, and at least one (meth)acryloyl group bonded to the linking group.

Fluorinated ether compound, composition for forming hard coating layer, and article having hard coating layer

To provide a fluorinated ether compound, a fluorinated ether composition and a coating liquid, whereby it is possible to form a surface-treated layer which has high initial water/oil repellency and which is excellent in abrasion resistance and fingerprint stain removability, and a substrate having a surface-treated layer and a method for its production. A fluorinated ether compound which has a poly(oxyperfluoroalkylene) chain (&#x3b1;&#x3b2;) having a Coxyperfluoroalkylene unit (&#x3b1;) and an oxyperfluoroalkylene unit (&#x3b2;) other than the unit (&#x3b1;) and which has a hydrolysable silyl group on at least one terminal of the poly(oxyperfluoroalkylene) chain (&#x3b1;&#x3b2;) via a linking group.

Fluorinated ether compound, fluorinated ether composition and coating liquid, and substrate having surface-treated layer and method for its production

To provide a fluorinated ether compound, a fluorinated ether composition and a coating liquid, capable of forming a surface layer which has high initial water/oil repellency and which is excellent in abrasion resistance, fingerprint stain removability, lubricity and uniformity, as well as a substrate having such a surface layer, and a method for its production. A substrate having a surface layer formed of a fluorinated ether compound represented by D-R&#x2014;O&#x2014;CH&#x2014;(CFO)-A (Dis CF&#x2014; or CF&#x2014;O&#x2014;; Ris a Cfluoroalkylene group containing at least one hydrogen atom, etc.; m is 1 to 6; n is 1 to 200; A is &#x2014;CF&#x2014;B&#x2014;CH&#x2014;SiLR; B is &#x2014;CHO&#x2014;, &#x2014;CHO&#x2014;C(&#x2550;O)NH&#x2014;, etc.; L is a hydrolysable group; R is a monovalent hydrocarbon group, etc.; a is 1 to 5; b is 1 to 10; c is 1 to 3; g is 1 to 5; and h is 1 to 5) or a fluorinated ether composition containing the compound; and a method for its production.

Fluorinated ether compound, fluorinated ether composition, and coating liquid, as well as substrate having surface layer, and method for its production

To provide a fluorinated ether compound, a fluorinated ether composition and a coating liquid, whereby it is possible to form a surface-treated layer which has high initial water/oil repellency and which is excellent in abrasion resistance and fingerprint stain removability, and a substrate having a surface-treated layer and a method for its production. A fluorinated ether compound which has a poly(oxyperfluoroalkylene) chain ((&#x3b1;&#x3b2;)) made of at least two units (&#x3b1;&#x3b2;) linked to one another, and which has a hydrolysable silyl group on at least one terminal of the chain ((&#x3b1;&#x3b2;)) via a linking group, wherein each unit (&#x3b1;&#x3b2;) is a poly(oxyperfluoroalkylene) group comprising one to three groups (&#x3b1;) made of at least one type of a Coxyperfluoroalkylene group and one to three groups (&#x3b2;) made of at least one type of a Coxyperfluoroalkylene group.

To provide a copolymer which can impart sufficient dynamic water repellency, after air-drying water repellency and friction durability to a surface of an article, and which has low impact on the environment, a method for producing the same, a water repellent composition and an article excellent in dynamic water repellency, after air-drying water repellency and friction durability. A copolymer which is characterized in that it has structural units based on the following monomer (a) and structural units based on the following monomer (b), wherein the content of structural units based on the monomer (a) is from 5 to 95 mass % in the total structural units (100 mass %), the content of structural units based on the monomer (b) is from 5 to 60 mass % in the total structural units (100 mass %) and the sum of the contents of structural units based on the monomer (a) and structural units based on the monomer (b) is at least 65 mass % in the total structural units (100 mass %), and a water repellent composition which comprises the copolymer: Monomer (a): a (meth)acrylate having no Rgroup and having a Calkyl group; Monomer (b): a halogenated olefin.

Copolymer and method for producing the same

To provide an oil repellent copolymer capable of forming an oil repellent film which is excellent in durability. An oil repellent copolymer characterized by comprising a repeating unit (A) having a polyfluoroalkyl group, a repeating unit (B) having a fluorescent functional group, and a repeating unit (C) having an ester bond other than an ester bond derived from acrylic acid, and/or a hydroxyl group.

Oil repellent copolymer, method for its production and oil repellent treatment solution

To provide a water/oil repellent composition which is capable of imparting sufficient dynamic water repellency and post-air-drying water repellency to the surface of an article and which presents a low environmental impact, a method for its production and a method for treating an article. A water/oil repellent composition which comprises a copolymer having structural units based on the following monomer (a) and structural units based on the following monomer (b) and having a mass average molecular weight of at least 40,000, and a medium, is used. Monomer (a): a compound represented by (Z&#x2014;Y)X, wherein Z is a Cpolyfluoroalkyl group or the like, Y is a bivalent organic group or the like, n is 1 or 2, and X is a polymerizable unsaturated group. Monomer (b): an olefin, a homopolymer of which has a glass transition temperature of from &#x2212;50&#xb0; C. to 50&#xb0; C.

Water/oil repellent composition, method for its production and method for treating article

To provide an amorphous fluorinated polymer which is soluble in a fluorinated solvent having a boiling point of at most 70&#xb0; C., and a fluorinated polymer composition containing it. An amorphous fluorinated polymer characterized by having a fluorine content of at least 50 mass % and an intrinsic viscosity of at least 0.03 g/dL and less than 0.05 dL/g as measured in perfluoro(2-butyltetrahydrofuran) at 30&#xb0; C.

Fluorinated polymer and fluorinated polymer composition containing it

To provide an antireflection coating composition having a low surface tension and excellent coating properties and capable of forming an antireflection film with a low refractive index, without use of PFOS nor PFOA having 7 or more carbon atoms. An antireflection coating composition which contains a fluorinated surfactant (A) containing a compound (A1) represented by the following formula (I), a water-soluble polymer (B) and an aqueous medium (C):R&#x2014;O&#x2014;(R&#x2014;O)&#x2014;R&#x2014;X&#x2003;&#x2003;(I)wherein Ris a linear or branched perfluoroalkyl group of which the terminal fluorine atom may be substituted by a hydrogen atom or a chlorine atom, each of Rand Rwhich are independent of each other, is a linear or branched perfluoroalkylene group, provided that the total number of carbon atoms in R, Rand Ris at most 5, n is 0 or an integer of at least 1, Xis &#x2014;COOH or &#x2014;C(CFZ)(CFZ)OH, which may form a salt, and each of Zand Zis a hydrogen atom, a fluorine atom, a chlorine atom or a trifluoromethyl group.

Antireflection coating composition

To provide a coating composition useful to form an antireflection film having a refractive index lower than 1.4, excellent in water solubility and long-term stability in the form of a water solution. A coating composition containing a fluoropolymer having ionic functional groups (such as a fluoropolymer having polymer units of &#x2014;CFCF[O(CF)COOH]&#x2014;), an acid and an aqueous medium.

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Tokyo, Japan

Nobuyuki Otozawa