Abstract: A polyamide acid composition contains a polyamide acid having a terminal structure represented by a general formula (1), a polyamide acid having a terminal structure represented by a general formula (2), and a polyamide acid having a terminal structure represented by a general formula (3): wherein X is a tetravalent organic group which is a tetracarboxylic acid dianhydride residue, Y is a divalent organic group which is a diamine residue, and Z is a divalent organic group which is an acid anhydride residue. A polyimide film is obtained by applying a solution of a polyamide acid on a substrate, and cyclodehydrating the polyamide acid by heating.

Abstract: The present invention has an object to obtain a polyimide film that has a sufficiently smooth surface without peeling even in a case where the polyimide film is a thick film and that is excellent in adhesion to an inorganic substrate. An alkoxysilane-modified polyamic acid solution of the present invention contains: an alkoxysilane-modified polyamic acid; and a surface control agent, the alkoxysilane-modified polyamic acid solution having a specific viscosity, the alkoxysilane-modified polyamic acid being obtained by reacting a polyamic acid with an alkoxysilane compound containing an amino group, and the polyamic acid being obtained by reacting a diamine with a tetracarboxylic dianhydride.

Abstract: The present invention has an object to obtain a polyimide film that has a sufficiently smooth surface without peeling even in a case where the polyimide film is a thick film and that is excellent in adhesion to an inorganic substrate. An alkoxysilane-modified polyamic acid solution of the present invention contains: an alkoxysilane-modified polyamic acid; and a surface control agent, the alkoxysilane-modified polyamic acid solution having a specific viscosity, the alkoxysilane-modified polyamic acid being obtained by reacting a polyamic acid with an alkoxysilane compound containing an amino group, and the polyamic acid being obtained by reacting a diamine with a tetracarboxylic dianhydride.

Abstract: An object of the invention is to provide a fluorine-containing (meth)acrylate polymer readily at a low cost without using any special polymerization facilities. Thus, the invention provides a fluorine-containing (meth)acrylate polymer obtained by reacting a (meth)acrylate polymer with an alcohol containing a fluorine atom represented by General Formula 1: Rf(CH2)nOH??(1) wherein Rf is a fluoroalkyl group or a fluoroalkyl ether group of 1 to 15 carbon atoms containing at least one or more fluorine atoms and n is an integer of 0 to 10 as well as a method for producing the same.

Abstract: An object of the invention is to provide a fluorine-containing (meth)acrylate polymer readily at a low cost without using any special polymerization facilities. Thus, the invention provides a fluorine-containing (meth)acrylate polymer obtained by reacting a (meth)acrylate polymer with an alcohol containing a fluorine atom represented by General Formula 1: Rf(CH2)nOH??(1) wherein Rf is a fluoroalkyl group or a fluoroalkyl ether group of 1 to 15 carbon atoms containing at least one or more fluorine atoms and n is an integer of 0 to 10 as well as a method for producing the same.