摘要:
To provide a process capable of producing a light-weight rigid open-cell foam by a spraying method using mainly or solely water as a blowing agent, wherein a polyol system liquid is excellent in storage stability even when the blowing agent is used in a large amount, and the foam is excellent in dimensional stability without sagging and capable of forming a uniform thermal insulation layer having an excellent appearance for the purpose of constructing a whole constructions.
摘要:
Provided is a process for producing a polyether polyol which can form low viscosity rigid foamed synthetic resins excellent in strength, dimensional stability and flame retardancy, can give a low viscosity polyol system solution containing water instead of HFCs as a blowing agent with good miscibility with isocyanate compounds and can form good rigid foamed synthetic resins by spraying.A polyether polyol (A) is produced by reacting a phenol component (molar ratio 1) selected from phenol and phenol derivatives having a hydrogen atom at one or more ortho-positions to the phenolic hydroxyl group, an aldehyde component (molar ratio 0.3 to 0.9) selected from formaldehyde and acetoaldehyde and an alkanolamine component (molar ratio 1.5 to 3.5) selected from monoethanolamine, diethanolamine and 1-amino-2-propanol and then adding an alkylene oxide to the resulting reaction product.
摘要:
A process for producing a polyether polyol which can form low viscosity rigid foamed synthetic resins excellent in strength, dimensional stability and flame retardancy, can give a low viscosity polyol system solution containing water instead of HFCs as a blowing agent with good miscibility with isocyanate compounds and can form good rigid foamed synthetic resins by spraying, which polyether polyol is produced by reacting a phenol component (molar ratio 1) selected from phenol and phenol derivatives having a hydrogen atom at one or more ortho-positions to the phenolic hydroxyl group, an aldehyde component (molar ratio 0.3 to 0.9) selected from formaldehyde and acetoaldehyde and an alkanolamine component (molar ratio 1.5 to 3.5) selected from monoethanolamine, diethanolamine and 1-amino-2-propanol and then adding an alkylene oxide to the resulting reaction product.
摘要:
To provide a process capable of producing a light-weight rigid open-cell foam by a spraying method using mainly or solely water as a blowing agent, wherein a polyol system liquid is excellent in storage stability even when the blowing agent is used in a large amount, and the foam is excellent in dimensional stability without sagging and capable of forming a uniform thermal insulation layer having an excellent appearance for the purpose of constructing a whole constructions.
摘要:
To provide a method for producing a rigid polyurethane foam using a polymer-dispersed polyol, which has high compatibility with a polyol to be used and is excellent in the storage stability, and with which good heat insulating properties can be obtained when it is formed into a foam.A method for producing a rigid polyurethane foam, which comprises reacting a polyol (Z) with a polyisocyanate in the presence of a blowing agent, a surfactant and a catalyst, wherein the (Z) is obtained by mixing a polyol (Z1) with a polymer-dispersed polyol (A) and has an average hydroxy value of from 200 to 800 mgKOH/g. The (A) is one having a monomer polymerized in a polyol (X), the (X) contains a polyether polyol (Y), the (Y) has an oxyethylene group content of at least 15 mass % and contains a polyol Y1 having a hydroxy value of from 200 to 800 mgKOH/g and a polyol Y2 having a hydroxy value of from 5 to 84 mgKOH/g, and the monomer contains a fluorinated acrylate or a fluorinated methacrylate.
摘要:
To provide a method for producing a rigid polyurethane foam, whereby it is possible to obtain a rigid polyurethane foam which has a low density and good dimensional stability, and when a mixture of a polymer-dispersed polyol and a polyol for a rigid polyurethane foam to be used, is stored, the mixture is excellent in storage stability, so that a rigid polyurethane foam can be produced constantly.A method for producing a rigid polyurethane foam, which comprises reacting a polyol component (Z) with a polyisocyanate component in the presence of a blowing agent, a surfactant and a catalyst, wherein the polyol component (Z) has an average hydroxyl value of from 200 is to 800 mgKOH/g and contains a polymer-dispersed polyol (A) having polymer particles dispersed in a polyol by polymerizing a monomer having a polymerizable unsaturated group in a polyol (X), wherein the polyol (X) contains a polyether polyol, and the monomer having a polymerizable unsaturated group contains a fluorinated acrylate or a fluorinated methacrylate, and styrene.
摘要:
To provide a method for producing a rigid polyurethane foam, whereby it is possible to reduce the density without causing deterioration in dimensional stability, and a rigid polyurethane foam.A method for producing a rigid polyurethane foam, which comprises a step of reacting a polyol having a hydroxyl value of from 200 to 800 mgKOH/g with a polyisocyanate compound in the presence of an amino-modified silicone, a catalyst, a blowing agent and a surfactant.
摘要:
A sinusitis treatment device includes: a flexible first elongated body to be guided into an accessory; an imaging unit which is provided on the first elongated long body, for obtaining an image on the front side of a distal end of the first elongated body; a flexible second elongated body having a lumen in which the first elongated body is inserted; an expansive body which is provided on the second elongated body and which has an effective expansive section capable of radial expansive deformation within a natural ostium located between a nasal cavity and an accessory nasal cavity to push open a stenosed part of the natural ostium; and a positioning unit which is provided on the second elongated body, for positioning the effective expansive section of the second elongated long body moved along the first elongated body relative to the first elongated body.
摘要:
A thermal head is suitable for use in electronic equipments such as printers and the like and comprises a partially or entirely trapezoidal partial-glaze layer formed on the top of an insulation substrate at one edge, a resistive film layer formed on the partial-glaze layer a pattern of common and discrete electrodes formed on the resistive film layer on the opposite sides of the partial-glaze layer except the area thereof that corresponds to the top of the partial-glaze layer, and a protective film layer formed to cover the resistive film layer and electrodes. In such a manner, a heating section is provided on the top of the trapezoidal partial-glaze layer. The heating section extends further upwards from the surrounding area. Unnecessary dispersion of pressure to the surrounding area other than the heating section can be avoided to improve the printing efficiency and speed.
摘要:
A communication terminal and a communication system able to adaptively update sizes and positions of screens in accordance with the situation without operation by a user, and a display method of the communication terminal, which perform processing of individual packets in a linked manner under the control of a display image control portion 306 based on an address of a transmitting side. Based on a sound pressure (volume) of audio information (VoIP) from the same transmitting side address, the terminal etc. calculate the screen sizes for mapping of packets of the video information from the same transmitting side address and corrects the top/bottom of the same screen or displays an instructed animated character based on top/bottom information, instruction information, etc. described in the packets of the control information from the same transmitting side address.