Abstract: There is provided a production method for a resin film according to which an application liquid raw material (polyaniline solution) does not gelate over a long period of time and a resin film can be stably produced. A production method for a resin film according to an embodiment of the present invention includes the step of heating and kneading a polyaniline in an emeraldine base state and a protonic acid to prepare a conductive resin composition.

Abstract: Provided is a covering material, in which the covering material is a covering material for covering a superconducting wire, a tensile strength at break thereof at ?196° C. is 12.0 N/3 mm or more, and a tensile elongation at break thereof at ?196° C. is 12% or more. The covering material preferably includes a backing made of a polyimide resin. The covering material preferably includes a viscoelastic layer formed on one surface of the backing.

Abstract: Provided is a covering material, which includes a backing having an upper surface and a lower surface opposite to the upper surface, and a viscoelastic layer formed on the upper surface of the backing, in which the covering material is a covering material for covering a rectangular electric wire, and an adhesive force of the viscoelastic layer to the lower surface of the backing as measured by peeling at a peeling angle of 180° and a tensile rate of 300 mm/min is 0.05 N/20 mm or more and 10 N/20 mm or less. A covered rectangular electric wire includes the covering material and a rectangular electric wire covered with the covering material. An electrical device is produced by using the covered rectangular electric wire.

Abstract: Provided is a covering material, in which the covering material is a covering material for covering a rectangular electric wire in such a way that the covering material is spirally wound around the rectangular electric wire in a manner partially overlapping with itself; and the covering material includes a backing having a tensile modulus of elasticity at 25° C. of 5.0 GPa or more.

Abstract: Provided is a covering material, in which the covering material is a covering material for covering a superconducting wire, and a tensile modulus of elasticity at 25° C. is 6.0 GPa or less. Further provided is also a superconducting electric wire, which includes the covering material and a superconducting wire covered with the covering material. Still further provided is an electrical device produced by using the superconducting electric wire.

Abstract: The covering material for a rectangular electric wire of the present invention is a covering adhesive tape for covering a rectangular electric wire, wherein a viscoelastic material layer is disposed on one side of the backing of the covering material. In particular, in the covering material for a rectangular electric wire of the present invention, the viscoelastic material layer preferably includes a silicone-based adhesive agent composition, and the backing preferably includes a polyimide resin.

Abstract: An object of the present invention is to provide a polyamide imide resin composition having excellent in heat resistance, mechanical strength, and tracking resistance. The polyamide imide resin composition includes a polymer blend of a polyamide imide resin including an alicyclic structure and an aromatic polyamide imide resin.

Abstract: An intermediate transfer member, which is used for a tandem color image forming device, is formed in an endless belt shape, and includes a polyimide resin as a main component. The planarity of the intermediate transfer member is less than or equal to 5 mm. Also, a method of fabricating the intermediate transfer member.

Abstract: An intermediate transfer member, which is used for a tandem color image forming device, is formed in an endless belt shape, and includes a polyimide resin as a main component. The planarity of the intermediate transfer member is less than or equal to 5 mm. Also, a method of fabricating the intermediate transfer member.

Abstract: A separator for battery which exhibits a low electrical resistivity at normal time, good SD characteristics and a high mechanical strength is disclosed. A high molecular weight polypropylene having a weight average molecular weight of 500,000 or more and a polyethylene having a melting point of from 100.degree. to 140.degree. C. are extruded through a T-die film-forming machine to prepare a laminate film comprising a laminate of the high molecular polypropylene layer and the polyethylene layer. The laminate film is stretched at a temperature as low as from -20.degree. C. to 80.degree. C. by 10% to 100% based on the length of the original film, stretched at a temperature as high as 80.degree. C. to 130.degree. C. by 60% to 300% based on the length of the unstretched film, and then shrunk at the same temperature by 5% to 30% based on the length of the stretched film to render the film porous. Thus, a porous laminate film having a Gurley value of from 200 to 1,500 is prepared as a separator for battery.

Abstract: A porous film of a laminate structure, comprising a porous inner layer comprising polyethylene as the essential component, and having formed on both surfaces thereof a porous outer layer comprising polypropylene and having a Vickers hardness of 10 or more. The porous film is suitable as a separator for a lithium battery, and when the porous film is superposed with a positive electrode and a negative electrode, the film is difficult to be scratched and perforated at the assembly of cells. A production method of the porous film is also provided.

Abstract: A porous film, a process for producing the same, a battery separator comprising the porous film, and a battery having incorporated therein the separator are disclosed. The porous film comprises a polyethylene and a polypropylene as the essential components, wherein the polyethylene content in the total weight of polyethylene and polypropylene is from 2 to 40% by weight and the polyethylene content is changed in the direction of the thickness of the film, and is produced by forming a laminate film comprising at least one polypropylene layer and at least one layer of a mixture of polyethylene and polypropylene as the essential components, the polyethylene content in the film being from 2 to 40% by weight, uniaxially stretching the laminate film at a low-temperature range of from -20.degree. C. to 80.degree. C. and then stretching the film at a high-temperature range of from 90.degree. C. to 150.degree. C.

Abstract: A porous film comprising a composition of 10 to 90% by weight of polypropylene and 10 to 90% by weight of polyethylene having an Mw/Mn ratio, as determined by high-temperature gel-permeation chromatography, of 10 or less is disclosed. The porous film has a high tensile modulus, a satisfactory appearance, and a uniform thickness. A battery separator comprising the porous film performs a shut-down function (an increase in resistance) in case of a temperature rise due to an abnormal current.

Abstract: An intra-ocular lens comprising a lens part and a fixing part for fixing the lens part in an eye, the lens part comprising a colorless and transparent polyimide containing at least one of repeating units represented by formulae (I) to (IV): ##STR1## wherein X.sub.1 represents ##STR2## X.sub.2 represents ##STR3## X.sub.3 represents ##STR4## Further, the lens part and the fixing part may be integrally molded together, if desired.