Abstract:
The present invention provides a coating composition, which can simply produce a porous siliceous film having excellent mechanical strength and, at the same time, possessing a stable very low level of dielectric and good chemical resistance to various chemicals, and to provide a process for producing a siliceous material using the same. The coating composition according to the present invention comprises a polyalkylsilazane compound, an acetoxysilane compound, an organic solvent, and, if necessary, a pore forming material. The present invention also provides a siliceous material produced by firing the coating composition and a process for producing the same.
Abstract:
An eye movement measuring apparatus comprises: an image forming part configured to obtain data optically to form a fundus oculi image of an eye based on the obtained data; and an image analysis part configured to analyze the formed fundus oculi image to determine eye movement of the eye.
Abstract:
A straddle-type vehicle in which drivability is ensured when starting the vehicle. The vehicle includes a control device that controls a continuously variable transmission. A plurality of driving modes “A” and “B” are set in the control device. The control device performs a first control that switches the driving mode to driving mode “A” before start of the engine; a second control that switches between driving 2modes A” and “B” in response to operation of a mode switching operation member; and a third control that limits the second control and inhibits switching from the driving mode “A” to driving mode “B”, when the control device detects that the engine has not been started.
Abstract:
An objective of the present invention is to provide a phosphorous-containing siliceous material having a specific permittivity of not more than 3.5. The phosphorus-containing silazane composition according to the present invention is characterized by comprising a polyalkylsilazane and at least one phosphorus compound in an organic solvent. A phosphorus-containing siliceous film may be formed by coating the composition onto a substrate to form a film which is then prebaked at a temperature of 50 to 300° C. and is then baked in an inert atmosphere at a temperature of 300 to 700° C. The phosphorus compound according to the present invention is preferably a pentavalent phosphoric ester or phosphazene compound.
Abstract:
There is provided a low-permittivity porous siliceous film that has high mechanical strength and is useful in an interlayer insulation film. The coating composition according to the present invention is characterized by comprising: an organic solvent and, contained in said organic solvent, 1) a polyalkylsilazane and 2) at least one organic resin component selected from the group consisting of homopolymers and copolymers of acrylic esters and methacrylic esters, group —COOH and/or group —OH being contained in at least a part of side groups contained in at least one type of the organic resin component.
Abstract:
A method of manufacturing a pipe liner bag is provided for reliably sealing a seam of a resin absorbent material with simple operations without forming pin holes through the resin absorbent material. The pipe liner bag comprises a tubular resin absorbent material having an outer surface covered with a highly air-tight plastic film and a hardenable resin impregnated in the tubular resin absorbent material. A plastic film is welded on a surface of a strip-like resin absorbent material. The plastic film has a width smaller than the resin absorbent material which has sewing margins in both end portions in a width direction. The resin absorbent material is folded such that the plastic film is exposed. Both edges of the resin absorbent material in the width direction are laid one on top of the other. The overlapping portions of the resin absorbent material is lock sewed to form a tubular resin absorbent material. A seam protection tape is welded or adhered to the sewing margin including a seam of the resin absorbent material. A sealing ribbon tape having a width larger than the seam protection tape is welded or adhered over the seam protection tape to air-tight seal the seam.
Abstract:
A branch pipe lining method is provided for maintaining a favorable surface state on the inner surface of a lined branch pipe. The branch pipe lining method utilizes a branch pipe liner bag composed of a tubular resin-absorbent material having a flange formed at one end thereof, wherein the outer surface of the tubular resin-absorbent material is covered with a highly air-tight film, and the tubular resin-absorbent material is impregnated with an unhardened hardenable resin, and a cylindrical fluid pressure sealing member attached to the inner surface of the flange. A cylindrical front end nozzle attached to an opening at one end of a pressure bag is inserting into the fluid pressure sealing member of the branch pipe liner bag, and the front end nozzle and the fluid pressure sealing member are sealed by an elastic member interposed therebetween. Then, a pressurized fluid is supplied into the pressure bag, with the flange of the branch pipe liner bag being in close contact with an opening of a branch pipe, to evert and insert the branch pipe liner bag into the branch pipe from a main pipe toward the ground. The hardenable resin impregnated in the branch pipe liner bag is hardened with the inserted branch pipe liner bag being pressed onto an inner wall of the branch pipe, followed by pulling the front end nozzle out from the fluid pressure sealing member to tear the pressure bag off the branch pipe liner bag.
Abstract:
The present invention provides a method of readily manufacturing a multi-layer pipe liner bag with a good workability. A guiding tube is inserted into an outer layer composed of a tubular resin absorbent material and a plastic film coated over the outer periphery of the tubular resin absorbent material. An inner layer composed of another tubular resin absorbent material is inserted into the guiding tube, and the guiding tube is extracted with the outer layer and the inner layer being fixed. The tubular resin absorbent materials of the outer layer and the inner layer are with thermosetting resin to complete the pipe liner bag. Since the outer layer and the inner layer are manufactured separately, the manufacturing of the respective layers can be performed with a good workability. Also advantageously, the plastic film covering the outer surface of the outer layer can be prevented from scratches and so on.
Abstract:
A pipe lining method provides for precise cutting of a main pipe liner bag along a branch pipe opening using a cutter while preventing the inner wall of a branch pipe and the cutter from damages. After a cutting protection member is attached along the periphery of a branch pipe opening of a main pipe, the main pipe is lined using a main pipe liner bag. Then, a cutter of a cutting robot introduced into the main pipe is driven to cut away a portion of the main pipe liner bag covering a branch pipe opening. Since the cutting protection member functions as a guide for the cutter when cutting the portion of the main pipe liner bag covering the branch pipe opening as well as functions as a protection member for protecting the inner wall of the branch pipe, thereby making it possible to precisely cut the main pipe liner bag along the branch pipe opening using the cutter and to prevent the inner wall of the branch pipe and the cutter from damages.
Abstract:
A branch pipe liner bag is provided for reliably lining a branch pipe even having a curved portion. The branch pipe liner bag has a tubular resin-absorbent material having a flange formed at one end thereof, the outer surface of which is covered with a highly air-tight film. The tubular resin-absorbent material is impregnated with an unhardened hardenable resin, and a separable tube is attached to the flange. According to this invention, since the separable tube is attached to the previously hardened flange of the branch pipe liner bag, the separable tube will never be torn or cut even if the branch pipe liner bag is everted and inserted into a branch pipe having a curved portion with a high fluid pressure, or even if the film covering the branch pipe liner bag is heated and therefore softened by a heat medium or heat generated by the hardening of the thermosetting resin. It is therefore possible to reliably line a branch pipe even having a curved portion, using the branch pipe liner bag, and repair the branch pipe.