Abstract:
PROBLEM TO BE SOLVED: To obtain a polymer compound which does not exert bad effect on resist performance when it is used as a resin component of a resin composition for a photoresist. SOLUTION: This polymer compound for a photoresist is what becomes alkali-soluble by the action of an acid, and its monomer content as an impurity in the polymer is not higher than 2 wt.%. This polymer compound for a photoresist is produced, for example, by supplying a solution of the polymer compound for a photoresist which becomes alkali-soluble by the action of an acid into a poor solvent through a nozzle of not greater than 6 mmϕ diameter and being precipitated or reprecipitated. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a polymer compound for photoresists for immersion exposure which forms resist films excellent in water resistance. SOLUTION: The manufacturing process of the polymer compound for photoresists for immersion exposure comprises precipitating, using an organic solvent, a polymer containing a monomer unit having a group part of which is eliminated with an acid to show alkaline solubility and re-precipitating, rinsing or re-pulping it using an aqueous solvent. A polymer containing a monomer unit having a group part of which is eliminated with an acid to show alkaline solubility and a monomer unit adhering to a substrate may be used for the polymer subjected to precipitation. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To obtain a resin composition for a photoresist having improved alkali solubilization function without impairing adhesion to a substrate or dry etching resistance. SOLUTION: The resin composition for a photoresist comprises a polymer X comprising 1 to COPYRIGHT: (C)2004,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a method for manufacturing a polymeric compound for a photoresist highly soluble in a resist solvent comprising a glycol-based solvent, an ester-based solvent, a ketone-based solvent or the like. SOLUTION: The method for manufacturing a polymeric compound for a photoresist exhibiting changes in solubility in an alkali by an action of an acid comprises a step for polymerization using as a polymerization solvent one or more solvents selected among a glycol-based solvent, an ester-based solvent and a ketone-based solvent followed by a filtration treatment of the polymerization reaction liquid containing the resultant polymer. Preferably, the polymerization solvent is at least one selected among propylene glycol monomethyl ether, propylene glycol monomethyl ether acetate, ethyl lactate and methyl isobutyl ketone. COPYRIGHT: (C)2003,JPO
Abstract:
PROBLEM TO BE SOLVED: To obtain a particulate polymeric compound which does not adversely affect resist performance when used as the resin component of a photoresist resin composition. SOLUTION: The particulate photoresist compound polymeric compound is a photoresist polymeric compound which becomes alkali-soluble by the action of an acid, and has a volume average particle diameter in the range of 20-300 μm and, simultaneously, >=90 vol.%, based on the entire particles, particles having a particle diameter of 10-500 μm. This particulate photoresist polymeric compound can be produced by feeding a solution of a photoresist polymeric compound which becomes alkali-soluble by the action of an acid into a poor solvent through a nozzle having a bore diameter of
Abstract:
PROBLEM TO BE SOLVED: To obtain a single-peaked narrow-disperse polymer with good reproducibility when a polymer used for a resin for a photoresist is produced by polymerization and to enable the microfabrication of a semiconductor with a resin for a photoresist using such a polymer. SOLUTION: The polymerizable unsaturated compound for a photoresist used as a monomer of a high molecular compound for the photoresist has
Abstract:
PROBLEM TO BE SOLVED: To obtain a rubber-modified styrene resin composition which yields a molded part possessing well balanced impact resistance and surface gloss. SOLUTION: This composition contains a rubber-modified styrene resin which satisfies the following three requirements. (A) The area average particle size of rubbery polymer dispersed particles is from 0.1 to 2.0 μm, (B) the number average molecular weight (Mn ) of polystyrene chains grafted to rubber polymers is within the range of from 60 to 100% of the number average molecular weight (Mn ) of a continuous phase polystyrene and (C) the average chain number of polystyrene chains grafted to rubber polymers is from 1.3 to 3.0 per rubber polymer chain.
Abstract:
PURPOSE:To maintain an antistatic function for a sufficient period by incorporating the superfines of a 10-70wt.% conductive metal oxide in an organic-resin protective layer. CONSTITUTION:A transparent dielectric layer 2, a magneto-optic recording layer 3, a transparent dielectric layer 4 and a reflecting film 5 are deposited successively through a sputtering method as thin-films. A section just above the reflecting film 5 is coated uniformly with an ultraviolet curing type resin through a spin coating method as a first organic-resin protective layer 6, and the resin is cured through the irradiation of ultraviolet rays. A section just above the protective layer 6 is coated uniformly with a resin, in which the superfines 8 of a conductive oxide are kneaded with isofluorocarbon in the content of 10-70wt.% through the spin coating method, and the resin is dried, thus forming a second organic-resin protective layer 7. Accordingly, the protective layer 7 has conductivity, the surface of an optical disk is not charged and dust is not attracted, and the protective layers 6, 7 are transparent, and normal pinhole inspection can be carried out. Consequently, an antistatic function is obtained, and the function can be maintained for a sufficient period.
Abstract:
PURPOSE:To protect a recording film against the destruction of data in magnetic field modulation recording and to smooth floating and lowering of a magnetic head by providing protective films having uniform and adequate surface roughness and strength. CONSTITUTION:There is a reflection film 5 consisting of metal on the recording film 3 and there are the first protective film 6 and the second protective film 7 thereon. The first protective film of two layers of the protective films is relatively small in the surface roughness and therefore the structure constituting the film is finer, is consequently high in density and strong and is suitable for protecting the recording film. On the other hand, the second protective film is relatively large in the surface roughness and, therefore the structure constituting the film is large. While the density of the film is low, the area in contact with the slider surface of a magnetic head is small and, therefore the friction force and attraction force are small. The characteristic preferable for CSS are thus obtd. Then, the recording film is protected against the destruction of the data and the floating and lowering of the magnetic head at the time of CSS are smoothed.
Abstract:
PURPOSE:To suppress the damage of an optical information recording medium adopting a magnetic field modulation system due to contact with a floating magnetic header used in the system. CONSTITUTION:When a recording layer 2 and a protective layer 3 of org. resin are successively laminated on a substrate 1 to obtain an optical information recording medium, a lubricant layer 4 is further formed on the protective layer 3. This lubricant layer 4 is made of fluorocarbon lubricating oil having one or more active polar groups and based on fluorine and carbon.