Abstract:
PROBLEM TO BE SOLVED: To provide a fine porous support membrane for a composite semipermeable membrane being high in the salt checking ratio and excellent in water permeability and a resin composition for forming the fine porous support membrane.SOLUTION: A resin composition for a fine porous support membrane of the present invention includes aromatic polysulfone and aromatic polyether having a proton acid group. The present invention can provide a resin composition for a fine porous support membrane capable of providing a composite semipermeable membrane that can reveal higher water permeable performance than a composite semipermeable membrane using a conventional fine porous support membrane composed of a polysulfone single body, while maintaining the salt checking ratio and suitable for forming a fine porous support membrane constituting the composite semipermeable membrane; a fine porous support membrane formed by using the resin composition for the fine porous support membrane; and a composite semipermeable membrane having a fine porous support membrane layer.
Abstract:
PROBLEM TO BE SOLVED: To provide a resin composition having low dielectric dissipation factor and high surface smoothness; and a metal laminate using the resin composition.SOLUTION: The resin composition includes: (a) an aromatic polyimide prepared by reacting a diamine compound including an aromatic diamine compound with a tetracarboxylic dianhydride including an aromatic tetracarboxylic dianhydride; and (b) a cage type silsesquioxane partial cleavage structure having a silanol group and a phenyl group and having a dielectric loss tangent lower than that of the aromatic polyimide (a). In the aromatic polyimide, a ratio of the total of the aromatic diamine compound and the aromatic tetracarboxylic dianhydride to the total of the diamine compound and the tetracarboxylic dianhydride is ≥70 mol%, and when two or more aromatic rings are connected mutually in the molecule in the aromatic diamine compound or the aromatic tetracarboxylic dianhydride, aromatic rings are connected mutually via a single bond.
Abstract:
PROBLEM TO BE SOLVED: To provide a novel carbon film and the like having outstanding gas separation performance. SOLUTION: The carbon film is obtained by thermally decomposing a film formed from aromatic polyether having a proton acid group. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To obtain a resin composition having a low dielectric constant, a low dielectric tangent, heat resistance, and adhesion to conductive materials, and to provide a laminate for high-frequency circuits using the resin composition. SOLUTION: The resin composition is composed of 3-72 pts.wt. of (I) a polymer selected from 4-methyl-1-pentene-based polymers and/or cycloolefin-based copolymers containing at least a monomer component expressed by formula (1) which takes a structure expressed by formula (2) in the polymer, 0.5-50 pts.wt. of (II) a modified poly-α-olefinic polymer having 0.01-10 wt.% of a portion graft-modified with an unsaturated carboxylic acid and/or its derivatives, and 25-90 pts.wt. of (III) an inorganic filler with an average particle diameter of 0.1-100 μm, provided that the total of (I), (II), and (III) is 100 pts.wt. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a circuit board for a microwave module which is provided with an insulation film that has an excellent dielectric characteristic corresponding to high-frequency communication and superior properties such as hygroscopicity resistance, mechanical property or heat resistance, etc. through stable and efficient formation by photo processing. SOLUTION: The circuit board for a microwave module is provided with an insulation film made of polyether-based resin with a repetitive unit expressed by a general formula (I). In the formula, A represents a bivalent alkylene group of carbon numbers 1-10, -SO 2 -, -SO-, -S-, -O-, or -CO-. a and b are independent integers of 0 to 4, m is an integer of 0 or 1, n is an integer of 1 t 3. R 1 to R 6 independently represent either of hydrogen atom, alkyl group of carbon numbers 1-8, and halogen atom, and at least one of R 1 to R 4 is a group other than hydrogen atom. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a polymer optical waveguide integrally having low light loss with =300 deg.C heat resistance. SOLUTION: The polymer optical waveguide of a single mode or of a multi mode is characterized by using a polyimide having a formula (1) in the principal chain skeleton and having a cross-linking group in a part of or all of its molecular terminals expressed by a formula (2), as an optical core and/or an optical cladding.
Abstract:
PROBLEM TO BE SOLVED: To provide a polymer optical waveguide integrally having low light loss with =300 deg.C heat resistance (2), high optical isotropy with
Abstract:
PROBLEM TO BE SOLVED: To provide a polycarbonate resin having (1) a low dispersibility with an Abbe's number of >=40, (2) a high refractive index of >=1.58, (3) a heat resistance represented by a glass transition temperature of >=100 deg.C, (4) a transparency represented by a light transmittance of >=85% and (5) a melt-processibility. SOLUTION: The polycarbonate resin has units of formula (1) and formula (2) [wherein R is represented by formula (3); and X1, X2 and X3 are each represented by formula (4)] in its main chain.
Abstract:
PROBLEM TO BE SOLVED: To provide a polyester resin having (1) a low dispersibility with an Abbe's number of >=40, (2) a high refractive index of >=1.58, (3) a heat resistance represented by a glass transition temperature of >=100 deg.C, (4) a transparency represented by a light transmittance of >=85% and (5) a melt-processibility. SOLUTION: The polyester resin has a unit of formula (1) [wherein R is represented by formula (2); and X1, X2 and X3 are each represented by formula (3)] in its main chain.
Abstract:
PROBLEM TO BE SOLVED: To provide a heat-resistant and low reflective surface and a method for forming the heat-resistant and low reflective surface by flocking carbon fibers in the surface of thermoplastic polyimide material on a heated metal plate by an electrostatic flocking method. SOLUTION: The heat-resistant and low reflective surface is formed by flocking the carbon fibers, which have a diameter of 3-15 μm and a length of 20-500 μm and characterized by that the ratio of the length to the diameter is 3-50, in the surface of the thermoplastic polyimide material on the heated metal plate by an electrostatic flocking method.