摘要:
To provide a process for producing a flexible polyurethane foam having a higher biomass degree than a conventional flexible polyurethane foam and excellent in foam physical properties and its appearance.A polymer-dispersed polyol obtained by polymerizing a vinyl monomer in the presence of the following polyol (a1) derived from a natural fat/oil and/or the following polyoxyalkylene polyol (a2) is used: Polyol (a1) derived from a natural fat/oil: a polyol derived from a natural fat/oil, which is obtained by providing a natural fat/oil with hydroxy groups by chemical reaction, and which has a hydroxy value of from 20 to 250 mgKOH/g and a molecular weight distribution of at least 1.2; Polyoxyalkylene polyol (a2): a polyoxyalkylene polyol which is produced by ring-opening polymerization of an alkylene oxide (c) with the polyol (a1) derived from a natural fat/oil in the presence of at least one polymerization catalyst (b) selected from the group consisting of a coordination anionic polymerization catalyst and a cationic polymerization catalyst.
摘要:
To provide a process for producing a flexible polyurethane foam having a higher biomass degree than a conventional flexible polyurethane foam and excellent in foam physical properties and its appearance.A polymer-dispersed polyol obtained by polymerizing a vinyl monomer in the presence of the following polyol (a1) derived from a natural fat/oil and/or the following polyoxyalkylene polyol (a2) is used: Polyol (a1) derived from a natural fat/oil: a polyol derived from a natural fat/oil, which is obtained by providing a natural fat/oil with hydroxy groups by chemical reaction, and which has a hydroxy value of from 20 to 250 mgKOH/g and a molecular weight distribution of at least 1.2; Polyoxyalkylene polyol (a2): a polyoxyalkylene polyol which is produced by ring-opening polymerization of an alkylene oxide (c) with the polyol (a1) derived from a natural fat/oil in the presence of at least one polymerization catalyst (b) selected from the group consisting of a coordination anionic polymerization catalyst and a cationic polymerization catalyst.
摘要:
To provide a process for producing a flexible polyurethane foam, which can suitably form a flexible polyurethane foam having a good cushioning characteristic by using a raw material derived from a natural fat/oil.The process comprises a step of reacting a polyoxyalkylene polyol (A) containing the first polyoxyalkylene polyol (A1) obtained by ring-opening polymerization of an alkylene oxide (c) with an initiator (b) in the presence of a polymerization catalyst (a), with a polyisocyanate compound (B) in the presence of a catalyst (C) and a blowing agent (D). The polymerization catalyst (a) is at least one member selected from the group consisting of a coordination anionic polymerization catalyst and a cationic polymerization catalyst, and the initiator (b) is a polyol derived from a natural fat/oil, which is obtained by providing a natural fat/oil with hydroxyl groups through a chemical reaction, and has a hydroxyl value of from 20 to 250 mgKOH/g and a ratio of the mass average molecular weight to the number average molecular weight calculated as polystyrene, (Mw/Mn), of at least 1.2.
摘要:
To provide a process for producing, simply and with high reproducibility, a double metal cyanide complex catalyst having an organic ligand, which has a high catalytic activity, a small particle size and a high particle size uniformity.A process for producing a double metal cyanide complex catalyst having an organic ligand, comprising (a) a step of contacting an aqueous metal halide compound solution and an aqueous transition metal cyanide compound solution in a laminar flow state to obtain a liquid containing a double metal cyanide complex, and (b) a step of mixing the liquid containing a double metal cyanide complex, and an organic ligand, to obtain a dispersion containing a double metal cyanide complex catalyst having an organic ligand.
摘要:
Provided is a double metal cyanide complex catalyst with a high activity which is readily produced on an industrial scale. The double metal cyanide complex catalyst is of a fine particle form and contains t-butyl alcohol or, t-butyl alcohol and another organic compound as an organic ligand. The catalyst of the fine particle form has a volume-average particle size in a range of from 3 to 20 μm, based on measurement by a light scattering method for measuring fine particles having particle sizes of at least 0.15 μm. A particle content of the catalyst in a particle size range of at least 0.15 μm and at most 1 μm is less than 5% by volume, and a particle content of the catalyst over a particles size of 1 μm is in a range of more than 95% and at most 100% by volume.
摘要:
Provided is a double metal cyanide complex catalyst with a high activity which is readily produced on an industrial scale. The double metal cyanide complex catalyst is of a fine particle form and contains t-butyl alcohol or, t-butyl alcohol and another organic compound as an organic ligand. The catalyst of the fine particle form has a volume-average particle size in a range of from 3 to 20 μm, based on measurement by a light scattering method for measuring fine particles having particle sizes of at least 0.15 μm. A particle content of the catalyst in a particle size range of at least 0.15 μm and at most 1 μm is less than 5% by volume, and a particle content of the catalyst over a particles size of 1 μm is in a range of more than 95% and at most 100% by volume.
摘要:
A polyether polyol composition comprising: a polyether polyol, a phosphoric acid compound selected from the group consisting of at least one of orthophosphoric acid, polyphosphoric acid, polymetaphosphoric acid, and partial esters thereof in an amount raning from 0.5 to 100 ppm based on the polyether polyol metals derived from a composite metal cyanide complex catalyst in an amount ranging from 1 to 30 ppm based on the polyether polyol; a method for producing this polyether polyol composition; and methods of making polyurethane or isocyanate group-terminated prepolymers.
摘要:
A polyether is synthesized by ring opening polymerization of an alkylene oxide with an initiator having at least one hydroxyl group, in the presence of a double metal cyanide complex catalyst, then a powder of an inorganic adsorbent containing at least 50 vol % of fine particles having a particle size of at most 26 μm and further containing at least 90 vol % of fine particles having a particle size of at most 44 μm, is added to the crude polyether, and a metal derived from the above double metal cyanide complex catalyst is adsorbed on the powder, followed by separating the powder from the crude polyether.
摘要:
To provide a process for producing a polyester ether poly- or mono-ol having a narrow molecular weight distribution, which is obtained by copolymerizing an initiator having hydroxyl groups with a cyclic ester compound and an alkylene oxide.It is possible to produce a polyester ether poly- or mono-ol having a molecular distribution (Mw/Mn) of from 1.02 to 1.4 by copolymerizing a cyclic ester compound which carbon number is from 3 to 9 and an alkylene oxide which carbon number is from 2 to 20 with an initiator having from 1 to 12 hydroxyl groups and having a number average molecular weight (Mn) of from 18 to 20,000 in the presence of a double-metal cyanide complex catalyst is having tert-butyl alcohol as at least a part of an organic ligand.
摘要:
To provide a purification process which makes it possible to reduce the amount of an inorganic adsorbent to be used, shorten the time for separating a polyether and the inorganic adsorbent by filtration, and further reduce the amount of a metal derived from a double metal cyanide complex catalyst in a purified polyether thereby obtained.A polyether is synthesized by ring opening polymerization of an alkylene oxide with an initiator having at least one hydroxyl group, in the presence of a double metal cyanide complex catalyst, then a powder of an inorganic adsorbent containing at least 50 vol % of fine particles having a particle size of at most 26 μm is and further containing at least 90 vol % of fine particles having a particle size of at most 44 μm, is added to the above polyether, and a metal derived from the above double metal cyanide complex catalyst is adsorbed on the above powder, followed by separating the above powder from the above polyether.