Abstract: A surface treatment agent includes: a fluorine-containing compound (A) having a reactive silyl group; a compound (B); and a compound (C) selected from a compound (C1): R7COR8, a compound (C2), a compound (C3): R10—[OR11]q—R12, a hydrofluoroolefin (C4) having from 3 to 8 carbon atoms, and a hydrochlorofluoroolefin (C5) having from 3 to 8 carbon atoms. 0 to 3 members of R1 to R6 are fluorine-containing alkyl groups having from 1 to 3 carbon atoms, and the remaining members among R1 to R6 represent hydrogen or fluorine atoms. R7 and R8 represent a fluorine-containing alkyl group having from 1 to 5 carbon atoms. R9 represents a residue that forms a 3- to 5-membered ring structure with the carbon atom of a carbonyl group and that has a fluorine atom. R10 and R12 represent a fluorine-containing alkyl group having from 1 to 3 carbon atoms, q represents an integer of 1 or more, R11 represents a perfluoroalkylene group having from 1 to 6 carbon atoms.

Abstract: A surface treatment agent includes: a fluorine-containing compound (A) having a reactive silyl group; and at least one compound (B) selected from the group consisting of a fluorine-containing ketone compound (B1): R1COR2, a fluorine-containing cyclic ketone compound (the following B2), and a fluorine-containing polyether compound (B3): R4—[OR5]q—R6. In Formula (B1), R1 and R2 represent a fluorine-containing alkyl group having from 1 to 5 carbon atoms. In Formula (B2), R3 represents a residue that forms a 3- to 5-membered ring structure with a carbon atom of a carbonyl group and that has a fluorine atom. In Formula (B3), R4 and R6 represent a fluorine-containing alkyl group having from 1 to 3 carbon atoms, q represents an integer of 1 or more, R5 represents a perfluoroalkylene group having from 1 to 6 carbon atoms, and in a case in which q is an integer of 2 or more, plural R5s may be the same or different.

Abstract: To provide a fluorinated ether compound capable of forming a water and oil repellent layer with excellent abrasion resistance on a metal surface of a substrate, a composition, and an article provided with a water and oil repellent layer. The fluorinated ether compound of the present invention is represented by [Rf—(OX)m—O—]j1Y1—Z1[-L1-S—R11]g11[R12]g12. Rf is a perfluoroalkyl group, X is a fluoroalkylene group having at least one fluorine atom, m is an integer of at least 2, Y1 is a single bond or a (j1+1) valent linking group, and Z1 is a (g11+g12+1) valent linking group, L1 is a single bond or a divalent linking group, R11 is a hydrogen atom or a monovalent substituent, R12 is a hydrogen atom or a monovalent substituent, j1 is an integer of at least 1, g11 is an integer of at least 2, and g12 is an integer of at least 0.

Abstract: A curable composition for coating comprising: (a) a fluorine-containing highly branched polymer obtained by polymerization of a monomer A having two or more radical polymerizable double bonds in a molecule of the monomer A and a monomer B having a fluoroalkyl group and at least one radical polymerizable double bond in a molecule of the monomer B, in the presence of a polymerization initiator C at an amount of 5% by mole to 200% by mole per the number of moles of the monomer A, (b) at least one surface modifier selected from the group consisting of a perfluoropolyether compound and a silicone compound, (c) an active energy ray-curable polyfunctional monomer, and (d) a polymerization initiator that generates radicals by irradiation with an active energy ray; a cured film obtained from the composition; and a hard coating film obtained by use of the composition.

Abstract: It is an object to provide a compound that can provide a molded article and a coating film excellent not only in solubility in an organic solvent, but also in miscibility with/dispersibility in a matrix resin, causing no aggregation in a matrix resin, excellent in surface modification property, and having high transparency. A fluorine-containing highly branched polymer obtained by polymerizing a monomer A having two or more radical polymerizable double bonds in the molecule thereof with a monomer B having a fluoroalkyl group and at least one radical polymerizable double bond in the molecule thereof in the presence of a polymerization initiator C in a content of 5% by mol or more and 200% by mol or less, based on the total molar amount of the monomer A and the monomer B; and a resin composition comprising the polymer.

Abstract: A material having a low refractive index that exhibits sufficiently low refractive index without deteriorating the strength of cured film produced therefrom, that can be cured by an active energy ray that is applicable for a resin base material that is not desired to be exposed to heat. Curable composition including: siloxane oligomer (a) containing a radically polymerizable double bond obtained through hydrolysis and condensation of alkoxysilanes containing at least an alkoxysilane A of Formula [1] and alkoxysilane B of Formula [2] in an amount of 100 parts by mass; inorganic fine particles (b) in amount of 10 parts by mass to 1,000 parts by mass; polymerization initiator (c) generating a radical upon active energy ray irradiation in an amount of 0.1 parts by mass to 25 parts by mass R1aSi(OR2)4-a??[1] R3bSi(OR4)4-b??[2] a cured film produced from the composition, and a laminate including a low refractive index layer produced from the composition.

Abstract: A fluorine-containing highly branched polymer obtained by polymerizing a polyfunctional monomer A that has two or more radically polymerizable double bonds and all or a portion of which has a bisphenol structure, a monomer B having a fluoroalkyl group and at least one radically polymerizable double bond, within a molecule, and a monomer C having at least one ring-opening polymerizable group selected from the group including an epoxy group and an oxetanyl group, and having at least one radically polymerizable double bond, within a molecule, under the presence of a polymerization initiator D with an amount of 5% by mole to 200% by mole to the number of moles of the polyfunctional monomer A; an epoxy resin composition including the polymer; and an epoxy resin cured product obtained from the resin composition.

Abstract: There is provided a composition for forming a hard coat layer which has high slippage and is excellent in water/oil repellency and also has antifouling properties such as fingerprint resistance and dirt wiping-off properties, and which is curable through ultraviolet irradiation in a nitrogen atmosphere or an air atmosphere that is generally used. A silicon-containing highly branched polymer obtained by polymerization of a monomer A having two or more radically polymerizable double bonds in a molecule and a monomer B having a polysiloxane chain and at least one radically polymerizable double bond in a molecule in the presence of a polymerization initiator D in an amount of 5 to 200% by mole relative to the number of moles of the monomer A; a curable composition including the highly branched polymer; a cured film obtained from the composition; and a hard coat film obtained by use of the composition.

Abstract: There is provided a highly branched lipophilic polymer that is excellent in blending and dispersing properties in a matrix resin, and is possible to provide surface modification properties such as excellent lipophilicity (anti-fingerprint property) and the like to a coating that is obtained from the resin composition while the intrinsic transparency of the resin is not impaired; and a photopolymeizable composition comprising the highly branched lipophilic polymer. A highly branched lipophilic polymer obtained by polymerizing a monomer A containing two or more radically polymerizable double bonds per molecule and a monomer B containing a C6-30 alkyl group or a C3-30 alicyclic group and at least one radically polymerizable double bond per molecule in the presence of 5 to 200 mol % of a polymerization initiator C relative to the number of moles of the monomer A. A photopolymeizable composition comprising the highly branched lipophilic polymer.

Abstract: A curable composition including: (a) 100 parts by mass of a siloxane oligomer containing at least one radically polymerizable double bond, (b) 0.001 to 1 part by mass of a fluorine-containing highly branched polymer, (c) 0.01 to 40 parts by mass of a surface modifier containing a perfluoropolyether compound, and (d) 0.1 to 25 parts by mass of a polymerization initiator generating a radical upon active energy ray irradiation, wherein the fluorine-containing highly branched polymer (b) is a fluorine-containing highly branched polymer obtained by polymerization of a monomer A containing two or more radically polymerizable double bonds per molecule and a monomer B containing a fluoroalkyl group and at least one radically polymerizable double bond per molecule in the presence of a polymerization initiator C in an amount of 5 to 200 mol % with respect to the number of moles of the monomer A.

Abstract: A material for a surface modifying agent with which the problems of insufficient durability as abrasion and chemical resistances of surface modification effect in polyurethane surface modification by the prior surface modifying agent are resolved, and is immobilized in a matrix resin firmly and improved in durability. A reactive fluorine-containing highly branched polymer obtained by: polymerizing monomer A having in a molecule two or more radically polymerizable double bonds, monomer B having in a molecule a fluoroalkyl group and at least one radically polymerizable double bond, and monomer C having in a molecule an alcoholic hydroxy group and minimum, one radically polymerizable double bond, in presence of a polymerization initiator D in an amount of 5 % to 200 % by mole with respect to the number of moles of the monomer A; a curable composition containing the reactive fluorine-containing highly branched polymer; and a cured film obtained from the composition.

Abstract: A flattening film forming composition for a hard disk that can prevent a magnetic material from migrating to the nonmagnetic layer, including a photopolymerizable coating material containing at least one polymer selected from a homopolymer that has a divinyl aromatic compound-derived unit structure and a copolymer having the unit structure or containing a mixture of the polymer and a photopolymerizable compound. The photopolymerizable compound may include an acrylate group, a methacrylate group, or a vinyl group. The polymer may be a copolymer further containing an addition polymerizable compound as a component to be copolymerized. A method for producing a hard disk, including: a first step of forming projections and recesses on a magnetic body; a second step of coating the projections and recesses with the flattening film forming composition; and a third step of flattening the coating by means of etching and exposing a surface of the magnetic body.

Abstract: It is an object to provide a compound that can provide a molded article and a coating film excellent not only in solubility in an organic solvent, but also in miscibility with/dispersibility in a matrix resin, causing no aggregation in a matrix resin, excellent in surface modification property, and having high transparency. A fluorine-containing highly branched polymer obtained by polymerizing a monomer A having two or more radical polymerizable double bonds in the molecule thereof with a monomer B having a fluoroalkyl group and at least one radical polymerizable double bond in the molecule thereof in the presence of a polymerization initiator C in a content of 5% by mol or more and 200% by mol or less, based on the total molar amount of the monomer A and the monomer B; and a resin composition comprising the polymer.

Abstract: It is an object to provide a compound that can provide a molded article and a coating film excellent not only in solubility in an organic solvent, but also in miscibility with/dispersibility in a matrix resin, causing no aggregation in a matrix resin, excellent in surface modification property, and having high transparency. A fluorine-containing highly branched polymer obtained by polymerizing a monomer A having two or more radical polymerizable double bonds in the molecule thereof with a monomer B having a fluoroalkyl group and at least one radical polymerizable double bond in the molecule thereof in the presence of a polymerization initiator C in a content of 5% by mol or more and 200% by mol or less, based on the total molar amount of the monomer A and the monomer B; and a resin composition comprising the polymer.

Abstract: There is provided a highly branched lipophilic polymer that is excellent in blending and dispersing properties in a matrix resin, and is possible to provide surface modification properties such as excellent lipophilicity (anti-fingerprint property) and the like to a coating that is obtained from the resin composition while the intrinsic transparency of the resin is not impaired; and a photopolymeizable composition comprising the highly branched lipophilic polymer. A highly branched lipophilic polymer obtained by polymerizing a monomer A containing two or more radically polymerizable double bonds per molecule and a monomer B containing a C6-30 alkyl group or a C3-30 alicyclic group and at least one radically polymerizable double bond per molecule in the presence of 5 to 200 mol % of a polymerization initiator C relative to the number of moles of the monomer A. A photopolymeizable composition comprising the highly branched lipophilic polymer.

Abstract: There is provided a material having a low refractive index that exhibits a sufficiently low refractive index without deteriorating the strength of the cured film produced therefrom, and that can be cured by an active energy ray that is applicable for a resin base material that is not desired to be exposed to heat. A curable composition comprising: a siloxane oligomer (a) containing a radically polymerizable double bond obtained through hydrolysis and condensation of alkoxysilanes containing at least an alkoxysilane A of Formula [1] and an alkoxysilane B of Formula [2] in an amount of 100 parts by mass; inorganic fine particles (b) in an amount of 10 parts by mass to 1,000 parts by mass; and a polymerization initiator (c) generating a radical upon active energy ray irradiation in an amount of 0.1 parts by mass to 25 parts by mas R1aSi(OR2)4-a??[1] R3bSi(OR4)4-b??[2] a cured film produced from the composition, and a laminate comprising a low refractive index layer produced from the composition.

Abstract: There is provided a highly branched lipophilic polymer that is excellent in blending and dispersing properties in a matrix resin, and is possible to provide surface modification properties such as excellent lipophilicity (anti-fingerprint property) and the like to a coating that is obtained from the resin composition while the intrinsic transparency of the resin is not impaired; and a photopolymeizable composition comprising the highly branched lipophilic polymer. A highly branched lipophilic polymer obtained by polymerizing a monomer A containing two or more radically polymerizable double bonds per molecule and a monomer B containing a C6-30 alkyl group or a C3-30 alicyclic group and at least one radically polymerizable double bond per molecule in the presence of 5 to 200 mol % of a polymerization initiator C relative to the number of moles of the monomer A. A photopolymeizable composition comprising the highly branched lipophilic polymer.

Abstract: A biomolecule-compatible highly branched polymer obtained by polymerizing a monomer having an alkylene oxide and two or more radically polymerizable double bonds in a molecule in presence of a polymerization initiator in 5 mol % or more and 200 mol % or less relative to the moles of monomer, wherein molecular terminals of biomolecule-compatible highly branched polymer have one biomolecular site of at least one pair from the group of combination pairs of biotin and avidin, an antigen and antibody, polynucleotide and polynucleotide having complementary base sequence thereof, cDNA and mRNA, enzyme and substrate, an enzyme and product, an enzyme and competitive inhibitor, an enzyme (binding site) and coenzyme, an enzyme (binding site) and triazine dye, protease and protease inhibitor, Fc site and protein A, Fc site and protein G, lectin and sugar, hormone receptor and hormone, DNA and DNA binding protein, heparin and fibronectin, and heparin and laminin.

Abstract: A curable composition including: (a) 100 parts by mass of a siloxane oligomer containing at least one radically polymerizable double bond, (b) 0.001 to 1 part by mass of a fluorine-containing highly branched polymer, (c) 0.01 to 40 parts by mass of a surface modifier containing a perfluoropolyether compound, and (d) 0.1 to 25 parts by mass of a polymerization initiator generating a radical upon active energy ray irradiation, wherein the fluorine-containing highly branched polymer (b) is a fluorine-containing highly branched polymer obtained by polymerization of a monomer A containing two or more radically polymerizable double bonds per molecule and a monomer B containing a fluoroalkyl group and at least one radically polymerizable double bond per molecule in the presence of a polymerization initiator C in an amount of 5 to 200 mol % with respect to the number of moles of the monomer A.

Abstract: A biomolecule-compatible highly branched polymer obtained by polymerizing a monomer having an alkylene oxide and two or more radically polymerizable double bonds in a molecule in presence of a polymerization initiator in 5 mol % or more and 200 mol % or less relative to the moles of monomer, wherein molecular terminals of biomolecule-compatible highly branched polymer have one biomolecular site of at least one pair from the group of combination pairs of biotin and avidin, an antigen and antibody, polynucleotide and polynucleotide having complementary base sequence thereof, cDNA and mRNA, enzyme and substrate, an enzyme and product, an enzyme and competitive inhibitor, an enzyme (binding site) and coenzyme, an enzyme (binding site) and triazine dye, protease and protease inhibitor, Fc site and protein A, Fc site and protein G, lectin and sugar, hormone receptor and hormone, DNA and DNA binding protein, heparin and fibronectin, and heparin and laminin.