Abstract:
PROBLEM TO BE SOLVED: To provide a dispersion composition having a high refractive index and high dispersion stability, a curable composition using the same, a transparent film, a microlens, and a solid-state image sensor.SOLUTION: The dispersion composition contains metal oxide particles (A) having a primary particle diameter of 1-100 nm, a polymer compound (B) having an acid value of 120 mgKOH/g or more and represented by formula (1), and a solvent (C). In the formula (1), Rrepresents a (m+n)-valent linking group; Rrepresents a single bond or a divalent linking group; Arepresents a monovalent substituent having at least one group selected from the group consisting of functional groups such as an acid group, a urea group, a urethane group, and a group having a coordinating oxygen atom; n pieces of As and Rs may each be the same or different; m represents a positive number of 8 or less; n represents 1 to 9; m+n satisfies 3 to 10; Prepresents a polymer chain; and m number of P's may be the same or different.
Abstract:
A radiation sensitive resin composition for forming a protective film, comprising: [A] a copolymer of (a1) an unsaturated carboxylic acid and/or an unsaturated carboxylic anhydride, (a2) an epoxy group-containing unsaturated compound and (a3) an unsaturated compound different from the components (a1) and (a2) ; [B] a monofunctional polymerizable unsaturated compound having a molecular weight of 180 or more and a carboxyl group; [C] a polyfunctional polymerizable unsaturated compound; and [D] a photopolymerization initiator, a method of forming a protective film from the above composition and a protective film formed from the above composition. The composition can provide a cured film having high flatness, has high developability and heat resistance, is advantageously used to form a protective film for liquid crystal display devices and solid-state image sensing devices, and has high storage stability as a composition.
Abstract:
PURPOSE: To provide a paint compsn. having internal catalytic function, by incorporating an acid having a specified strength in a resin having a functional group reactive with a crosslinking agent in a state capable of exhibiting a resin acid value within a specified range, and combining said resin with a crosslinking agent. CONSTITUTION: Wa pts.wt. (on a solid basis) resin having both a functional group reactive with carboxyl group and one reactive with a crosslinking agent, such as aminoplast, and Wb pts.wt. polybasic acid exhibiting a half-equivalent point potential of -30mV or above as measured by non-aqueous potentiometric titration in a state capable of exhibiting resin acid value, are subjected to an esterification reaction until the resin acid value reaches N+M, whereby the desired resin compsn. can ben obtd. The above-mentioned Wb is a value calculated based on the formula, wherein E is gram equivalent of polybasic acid; P is conversion % of polybasic acid to be reacted with resin; N is a resin acid value due to a polybasic acid of the final resin and is 2W50, M is initial resin acid value of resin). Said resin and a crosslinking agent are combined together in a weight ratio (on a solid basis) of 95/5W45/55 to obtain a paint compsn. COPYRIGHT: (C)1984,JPO&Japio
Abstract:
Disclosed is an aqueous composition for surface coating, including: a main ingredient comprising a first compound having at least two functional groups selected from the group consisting of a carboxyl group, a hydroxyl group, an amino group and combinations thereof, per molecule; a curing agent comprising a second compound having at least two functional groups selected from the group consisting of an aziridine group, an isocyanate group, a carbodiimide group and combinations thereof, per molecule; and an aqueous solvent. Further, an automotive sheet using the aqueous composition for surface coating is disclosed.
Abstract:
To provide a process for producing a powder coating material capable of forming a cured film which is excellent in weather resistance and which has few voids (gaps); a coated article having a cured film which is excellent in weather resistance and which has few voids; and a method for producing a carboxy group-containing fluororesin less susceptible to gelation. A process for producing a powder coating material containing a powder (X) composed of a composition (±) comprising a fluororesin (A) having carboxy groups, or alkoxysilyl groups and urethane bonds, and a curing agent (D), said process comprising (a) a step of melt-kneading a mixture comprising a hydroxy group-containing fluororesin (B), an acid anhydride (C1) or a compound (C2) having an alkoxysilyl group and an isocyanate group, and the curing agent (D), to obtain a kneaded product composed of the composition (±), and (b) a step of pulverizing the kneaded product to obtain the powder (X).
Abstract:
Provided are: a curable composition that shows good adhesion on a printed wiring board, particularly a flexible substrate or the like, and has a high hardness; a resist coating film of the curable composition; and a printed wiring board having a resist pattern of the resist coating film. The curable composition comprises: (A) a photobase generator; (B-1) an epoxy group-containing (meth)acrylate compound or (B-2) a carboxyl group-containing (meth)acrylate compound; (C) a photopolymerization initiator; and (D-1) a thermosetting component (excluding the (B-1) epoxy group-containing (meth)acrylate compound) or (D-2) a thermosetting component (excluding the (B-2) carboxyl group-containing (meth)acrylate compound).
Abstract:
To provide a process for producing a powder coating material capable of forming a cured film which is excellent in weather resistance and which has few voids (gaps); a coated article having a cured film which is excellent in weather resistance and which has few voids; and a method for producing a carboxy group-containing fluororesin less susceptible to gelation. A process for producing a powder coating material containing a powder (X) composed of a composition (α) comprising a fluororesin (A) having carboxy groups, or alkoxysilyl groups and urethane bonds, and a curing agent (D), said process comprising (a) a step of melt-kneading a mixture comprising a hydroxy group-containing fluororesin (B), an acid anhydride (C1) or a compound (C2) having an alkoxysilyl group and an isocyanate group, and the curing agent (D), to obtain a kneaded product composed of the composition (α), and (b) a step of pulverizing the kneaded product to obtain the powder (X).