Abstract:
The present invention relates to a method for producing a polyimide insulating coating layer, the method comprising a step of: applying a polyimide precursor composition to a substrate and baking the composition on the substrate, wherein the polyimide precursor composition comprises a polyamic acid and a basic compound selected from the group consisting of imidazoles and amine compounds, and wherein in the baking step, the length of time for which the polyimide precursor composition is heated is 10 seconds to 180 seconds; the average temperature increasing rate from 100°C to 280°C is 5°C/s or more; and the highest heating temperature is 300°C to 500°C.
Abstract:
The present invention relates to a method for producing a polyimide film, comprising steps of: applying a polyamic acid solution composition, which comprises at least one solvent selected from the group consisting of N-methylformamide, N,N-dimethylpropionamide, N,N-dimethylisobutylamide and tetramethylurea, and a polyamic acid, to a substrate; and then imidizing the polyamic acid by subjecting the composition to heat treatment, to obtain the polyimide film.
Abstract:
Disclosed is a method for manufacturing an electrode by forming an electrode mixture layer on a surface of a current collector using an electrode mixture composition containing an aqueous polyimide precursor solution composition and a specific crosslinking agent, the aqueous polyimide precursor solution composition being obtained by dissolving a specific polyamide acid in an aqueous solvent together with a specific imidazole, and subsequently performing heat treatment to remove the solvent and perform an imidization reaction of the polyamide acid. It is preferable that the imidazole is an imidazole selected from the group consisting of 1,2-dimethylimidazole, 2-ethyl-4-methylimidazole, 4-ethyl-2-methylimidazole, and 1-methyl-4-ethylimidazole.
Abstract:
There is provided a filler-containing dispersion solution exhibiting very improved filler dispersion stability by dispersing a filler in a solvent using a polyimide precursor solution composition. Furthermore, in the filler-containing dispersion solution, a tetracarboxylic dianhydride and/or its derivative is reacted with a diamine compound to prepare a filler-containing polyimide precursor solution composition, which is then used to provide a polyimide in which a filler is dispersed.
Abstract:
An electrode is produced by forming an electrode layer on a surface of a current collector using an electrode composition containing a binder including a polyamide acid that is obtained from a specific aromatic tetracarboxylic acid compound and a diamine component containing a diamine having a carboxyl group, and subsequently performing heat treatment to remove a solvent and perform an imidization reaction of the polyamide acid. It is preferable that the electrode composition further contains a crosslinking agent having an epoxy group or an oxazoline group. It is also preferable that the electrode composition further contains a pyridine compound.
Abstract:
The present invention relates to a binder resin composition for an electrode, including a polyamic acid and a solvent, wherein the polyamic acid is (i) a polyamic acid which includes a tetracarboxylic acid component including 10 to 100 mol% of 4,4'-oxydiphthalic acid and 90 to 0 mol% of 3,3',4,4'-biphenyltetracarboxylic acid and/or pyromellitic acid and a diamine component including an aromatic diamine having 1 to 4 aromatic rings, (ii) a polyamic acid which includes a tetracarboxylic acid component including 3,3',4,4'-biphenyltetracarboxylic acid dianhydride and a diamine component including 10 to 90 mol% of p-phenylene diamine and 90 to 10 mol% of 4,4'-diaminodiphenyl ether, or (iii) a polyamic acid which includes a tetracarboxylic acid component including 3,3',4,4'-biphenyltetracarboxylic acid dianhydride and a diamine component including 40 mol% or more of a bis[4-(4-aminophenoxy)phenyl] compound.