A composition that is easily applied, clear, well-bonded, and superhydrophobic is disclosed. In one aspect, the composition includes a hydrophobic fluorinated solvent, a binder comprising a hydrophobic fluorinated polymer, and hydrophobic fumed silica nanoparticles. Also disclosed is a structure including a substrate coated with the composition, as well as a method for making the composition and a method of coating a substrate with the composition.

A method of manufacturing a solar heat collection pipe includes an inner circumferential film forming step of forming an antireflection film on an inner surface of a glass pipe and an outer circumferential film forming step of forming an antireflection film on an outer surface of the glass pipe. These film forming steps are performed so that a part of a coating film through which a coating material is flowed when the coating material is discharged from the glass pipe in a coating material discharging step of the inner circumferential film forming step and a part of a coating film with which the coating material is in contact when the glass pipe is lifted from the coating material in a lifting step of the outer circumferential film forming step are positioned within a half circumference of the glass pipe in a circumferential direction of the glass pipe.

A polyimide precursor solution includes a polyimide precursor having a weight average molecular weight within a range of 20000 to 80000, particles, and an aqueous solvent. The aqueous solvent contains an organic amine compound (A) (excluding a water-soluble organic solvent (B) described below), a water-soluble organic solvent (B) containing at least one selected from the group consisting of N-methyl-2-pyrrolidone, 1,3-dimethyl-2-imidazolidinone, N,N-dimethylformamide, and N,N-dimethylacetamide, and water (C). A content ratio [(A):(B):(C)] of (A), (B), and (C) is within a range of 0.02 to 0.07:0.02 to 0.05:0.88 to 0.96 in terms of mass ratio.

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.

Disclosed is a process for producing a film-coated substrate having a relatively flat distribution of film thickness such that the film thickness is suppressed from gradually increasing toward a downstream side of flow of a coating liquid even when a coating film is formed on a plate-shaped substrate by a flow coating method in which the substrate is held in raised attitude. The film-coated substrate according to the present invention is employed in particular as an openable/closable window glass of an automotive door, and is suitable for one where the substrate includes an uncoated region where no coating film is formed, wherein the uncoated region is configured to be received in a receiving part of an upper frame of the door.

A method of producing an article including a substrate and a layer a surface-treating agent containing a polyether group-containing silane compound on a surface of the substrate, wherein the polyether group-containing silane compound is () a compound represented by formula (1) or formula (2):

##STR00001##

A structure body includes a base material and a siloxane based molecular membrane formed on the base material by use of an organic compound represented by Formula (1) or Formula (2):

##STR00001##

wherein any one of R1 to R5 is an amino group, others of R1 to R5 are each independently hydrogen or an alkyl group, R7 to R9 are each independently any one of hydroxy group, alkoxy group, alkyl group, and phenyl group on condition that one or more of R7 to R9 are each independently a hydroxy group or an alkoxy group, and R6 is an alkyl group.

A polyimide precursor resin composition for forming a flexible device substrate, including a polyamic acid having a structure obtained from a tetracarboxylic acid component including at least one of 3,3,4,4-biphenyltetracarboxylic dianhydride and pyromellitic dianhydride, a diamine component including at least one of paraphenylene diamine and 4,4-diaminodiphenyl ether, and a carboxylic acid monoanhydride, the polyamic acid satisfying equations (1) and (2) below:

0.97X/Y<1.00Equation (1)

0.5(Z/2)/(YX)1.05Equation (2)

in which X represents a number of moles of tetracarboxylic acid component, Y represents a number of moles of diamine component, and Z represents a number of moles of the carboxylic acid monoanhydride.

A substrate having a burnable coating mask includes: a substrate having a first section and a second section; a mask coating layer over the first section of the substrate; and a functional coating layer over at least a portion of the mask coating layer and over the second section of the substrate. A method of segmenting a substrate having a layer thereover, a method of preparing a segmented substrate having a layer thereover, a segmented substrate, and a transparency are also disclosed.

A composition that is easily applied, clear, well-bonded, and superhydrophobic is disclosed. In one aspect, the composition includes a hydrophobic fluorinated solvent, a binder comprising a hydrophobic fluorinated polymer, and hydrophobic fumed silica nanoparticles. Also disclosed is a structure including a substrate coated with the composition, as well as a method for making the composition and a method of coating a substrate with the composition.