Polyamideimide resin composition and method for producing polyamideimide resin
AssigneeResonac Corporation
InventorsYasuyuki Saito, Atsushi Takahashi, Rei Satake
Life of this patent
Estimating the term…
Abstract
A polyamideimide resin composition comprises a polyamideimide resin and a solvent containing a compound represented by formula (1). In the formula, R1 represents an alkyl group of 1 to 8 carbon atoms, R2 and R3 each independently represent a hydrogen atom or an alkyl group of 1 to 8 carbon atoms, and X represents an alkylene group of 1 to 8 carbon atoms.
Claims19
A polyamideimide resin composition comprising a polyamideimide resin and a solvent consisting of a compound represented by formula (1) and optionally an additional solvent at a content of 40 mass % or less, and wherein the additional solvent is selected from the group consisting of N-methyl-2-pyrrolidone, N,N′-dimethylformamide, 1,3-dimethylimidazolidinone, 4-morpholine carbaldehyde, aromatic hydrocarbons, and ketones,
- wherein, in the formula (1), R1 represents an alkyl group of 1 to 8 carbon atoms, R2 and R3 each independently represent a hydrogen atom or an alkyl group of 1 to 8 carbon atoms, and X represents an alkylene group of 1 to 8 carbon atoms,
- wherein the polyamideimide resin has a terminal carboxyl group blocked by reaction with a vinyl ether compound,
- wherein the polyamideimide resin has a number average molecular weight of 10,000 to 24,000, and
- wherein the polyamideimide resin has a degree of dispersion of 2.1 to 2.6, wherein the degree of dispersion is the weight average molecular weight/number average molecular weight.
A method for producing a polyamideimide resin, comprising reacting a monomer mixture containing a diisocyanate compound and a tribasic acid anhydride or a tribasic acid halide, in a solvent consisting of a compound represented by formula (1) and optionally an additional solvent at a content of 40 mass % or less, and wherein the additional solvent is selected from the group consisting of N-methyl-2-pyrrolidone, N,N′-dimethylformamide, 1,3-dimethylimidazolidinone, 4-morpholine carbaldehyde, aromatic hydrocarbons, and ketones,
- wherein, in the formula (1), R1 represents an alkyl group of 1 to 8 carbon atoms, R2 and R3 each independently represent a hydrogen atom or an alkyl group of 1 to 8 carbon atoms, and X represents an alkylene group of 1 to 8 carbon atoms;
- wherein the polyamideimide resin has a terminal carboxyl group blocked by reaction with a vinyl ether compound, wherein the polyamideimide resin has a number average molecular weight of 10,000 to 24,000, and wherein the polyamideimide resin has a degree of dispersion of 2.1 to 2.6, wherein the degree of dispersion is the weight average molecular weight/number average molecular weight.
A polyamideimide resin composition comprising a polyamideimide resin and a solvent containing at least one compound selected from the group consisting of 3-methoxy-N, N-dimethylpropionamide and 3-butoxy-N,Ndimethylpropionamide, wherein a content of the at least one compound in the entire solvent is 100 mass %, wherein the polyamideimide resin has a terminal carboxyl group blocked by reaction with a vinyl ether compound, wherein the polyamideimide resin has a number average molecular weight of 10,000 to 24,000, and wherein the polyamideimide resin has a degree of dispersion of 2.1 to 2.6, wherein the degree of dispersion is the weight average molecular weight/number average molecular weight.
Dependencies are inferred from the claim text.