WO2017104608A1 - Mousse souple de polyuréthane et coussin de siège - Google Patents

Mousse souple de polyuréthane et coussin de siège Download PDF

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Publication number
WO2017104608A1
WO2017104608A1 PCT/JP2016/086892 JP2016086892W WO2017104608A1 WO 2017104608 A1 WO2017104608 A1 WO 2017104608A1 JP 2016086892 W JP2016086892 W JP 2016086892W WO 2017104608 A1 WO2017104608 A1 WO 2017104608A1
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WIPO (PCT)
Prior art keywords
polyol
polyurethane foam
foaming
stock solution
flexible polyurethane
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PCT/JP2016/086892
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English (en)
Japanese (ja)
Inventor
浩介 吉冨
英青 瀬口
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株式会社ブリヂストン
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Publication of WO2017104608A1 publication Critical patent/WO2017104608A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/02—Seat parts
    • A47C7/18—Seat parts having foamed material included in cushioning part
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/90—Details or parts not otherwise provided for
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
    • A47C27/14—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/48—Polyethers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
    • C08G18/72—Polyisocyanates or polyisothiocyanates
    • C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
    • C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic

Definitions

  • the present invention relates to a flexible polyurethane foam used for various molded articles such as automobile parts and indoor household goods, and a seat pad (cushion material for a seat) using the flexible polyurethane foam.
  • This application claims priority based on Japanese Patent Application No. 2015-245705 for which it applied to Japan on December 16, 2015, and uses the content here.
  • Soft polyurethane foam is used for various applications such as seat pads for vehicles such as automobiles, cushions for indoor chairs, bedding, and cushioning materials for flooring in houses. Various mechanical characteristics are required depending on the application, and a comfortable seating comfort is required for an automobile seat pad.
  • the applicant has proposed a polyurethane foam of Patent Document 1 as a polyurethane foam having an appropriate repulsive force, light weight and excellent vibration absorption characteristics.
  • This polyurethane foam is a polyurethane foam in which a polyurethane foam stock solution containing a polyol and an isocyanate is foam-molded, and a polyether polyol having a molecular weight, an unsaturation degree, and a molecular weight / functional group number within a specific range is used as a main component.
  • an inorganic filler subjected to an organic treatment is blended.
  • An object of the present invention is to provide a seat pad with improved stability (hold feeling) at the time of sitting and a flexible polyurethane foam forming the seat pad.
  • a flexible polyurethane foam obtained by foam-molding a foaming stock solution containing a polyol, a polyisocyanate, a foaming agent, and a catalyst, wherein the polyol has a weight average molecular weight Mw of 3000 to 8000 and a functional group number.
  • polyether polyol A and a polyol B having a hydroxyl value of 100 mgKOH / g or more and having an alkyleneoxy group having 2 to 4 carbon atoms, and the alkyleneoxy group is a propyleneoxy group only Or [alkyleneoxy group having 3 or 4 carbon atoms] / [ethyleneoxy group] (mass ratio) in the alkyleneoxy group is 3 or more, and the polyisocyanate is a flexible polyurethane foam containing diphenylmethane diisocyanate.
  • a sheet pad comprising the flexible polyurethane foam according to [1].
  • the seat pad formed by the flexible polyurethane foam of the present invention has improved stability (holding feeling) when seated, and a comfortable sitting comfort can be obtained.
  • the flexible polyurethane foam of the present invention is a flexible polyurethane foam obtained by foam molding a foam stock solution containing a polyol, a polyisocyanate, a foaming agent, and a catalyst, and satisfies the following (A) to (C).
  • the polyol includes polyether polyol A having a weight average molecular weight Mw of 3000 to 8000 and a functional group number of 3 to 4.
  • the polyol includes a polyol B having a hydroxyl value of 100 mgKOH / g or more and having an alkyleneoxy group having 2 to 4 carbon atoms, and the alkyleneoxy group is only a propyleneoxy group or the alkylene [Alkyleneoxy group having 3 or 4 carbon atoms] / [ethyleneoxy group] (mass ratio) in the oxy group is larger than 3.
  • the polyisocyanate contains diphenylmethane diisocyanate (MDI).
  • the polyether polyol A contained in the foaming stock solution is a polyether polyol having a weight average molecular weight Mw of 3000 to 8000 and a functional group number (number of hydroxy groups) of 3 to 4.
  • the polyether polyol A is preferably a polyether polyol obtained by ring-opening polymerization of an alkylene oxide because of good reactivity.
  • the alkylene oxide include propylene oxide (PO) and ethylene oxide (EO).
  • the alkylene oxide used as the material for the polyether polyol A may be one type or two or more types.
  • the blending ratio (mass ratio) of PO and EO in the polyether polyol A contained in the foaming stock solution is not particularly limited.
  • the EO / PO (mass ratio) is preferably 0/100 to 25/75, / 100 to 20/80 is more preferable.
  • the EO / PO (mass ratio) is in the above range, a flexible polyurethane foam excellent in hysteresis loss and impact resilience can be easily formed.
  • the number of hydroxy groups (functional groups) contained in one molecule of the polyether polyol A contained in the foaming stock solution is 3-4. Within this range, the viscosity of the foaming stock solution becomes moderate, and a flexible polyurethane foam having excellent physical properties can be obtained.
  • a polyether polyol having a functional group of 2 may be used in combination as an optional component.
  • the weight average molecular weight Mw of the polyether polyol A contained in the foaming stock solution is preferably 4000 to 7500, more preferably 4500 to 7000, and still more preferably 5000 to 6500.
  • the weight average molecular weight Mw is a value calculated as a polystyrene equivalent value by gel permeation chromatography (GPC method).
  • the degree of unsaturation of the polyether polyol A contained in the foaming stock solution is preferably 0.03 meq / g or less.
  • the degree of unsaturation is 0.03 meq / g or less, a flexible polyurethane foam having good physical properties such as durability can be obtained.
  • the “unsaturation degree” is a method in which acetic acid liberated by acting mercuric acetate on unsaturated bonds in a sample is titrated with potassium hydroxide in accordance with Japanese Industrial Standard JIS K 1557-1970. Means the total degree of unsaturation (milliequivalent / g).
  • the polyether polyol A contained in the foaming stock solution may be one type or two or more types.
  • the total content of the polyether polyol is preferably 60% by mass or more, more preferably 70 to 95% by mass, and still more preferably 80 to 90% by mass.
  • a polymer polyol A ′ may be used in combination as a component different from the polyether polyol A.
  • the “polymer polyol” generally means a polymer composition or a mixture obtained by polymerizing an ethylenically unsaturated compound in a polyether polyol.
  • a polymer polyol widely used for polyurethane foam molded articles can be applied.
  • a polymer component such as polyacrylonitrile, acrylonitrile-styrene copolymer (AN / ST copolymer) is added to a polyether polyol made of polyalkylene oxide and having a weight average molecular weight Mw of 3000 to 8000, more preferably 4000 to 7000.
  • Examples include graft-polymerized polymer polyols.
  • the alkylene oxide used as the raw material of the polyalkylene oxide is preferably an alkylene oxide containing propylene oxide (PO) as a functional group (polymerizable group), an alkylene oxide containing only propylene oxide, or propylene oxide and ethylene oxide (EO). More preferred are alkylene oxides included together.
  • the content of the polymer component with respect to the total mass of the polymer polyol A ′ is preferably 10 to 50% by mass.
  • the polyether polyol A / polymer polyol A ′ (mass ratio) is preferably 70/30 to 99/1. / 20 to 99/1 is more preferred, and 85/15 to 99/1 is even more preferred. Within the above range, it is easy to obtain a flexible polyurethane foam having desired physical properties.
  • Polyol B As polyol B, what functions as a crosslinking agent is preferable.
  • the range of the mass ratio exemplified here (C3,4 group / EO group) is larger than 1.
  • the polyol B preferably has only PO group.
  • the molar ratio is within the above range, the hysteresis loss of the flexible polyurethane foam is moderately high, the rebound resilience of the flexible polyurethane foam is moderately low, the sense of stability (hold feeling) is improved, and the seat for a comfortable sitting comfort A pad is obtained.
  • the ethyleneoxy group means a group having a monovalent bond from which one hydrogen atom contained in ethylene oxide is removed.
  • the alkyleneoxy group having 3 or 4 carbon atoms means a group having a monovalent bond in which one hydrogen atom contained in propylene oxide or butylene oxide is removed.
  • the number of carbon atoms of the alkyleneoxy group possessed by polyol B may be at least any one of 2 to 4.
  • the hydroxyl value (unit: mgKOH / g) of polyol B is 100 or more, preferably 100 to 500.
  • the hydroxyl value of polyol B is 100 or more, the hysteresis loss of the flexible polyurethane foam is appropriately high, and when the hydroxyl value of polyol B is 500 or less, the resilience of the flexible polyurethane foam is appropriately low. Therefore, if it is in the preferable range, the stability (holding feeling) is improved, and a comfortable seat pad can be obtained.
  • polystyrene foam As a specific polyol B, a known crosslinking agent used in the field of polyurethane foam can be applied.
  • the polyol B contained in the foaming stock solution may be one type or two or more types.
  • the total content of the polyol B with respect to the total mass of the polyol contained in the foaming stock solution is 0.1 to It is preferably 20% by mass, more preferably 1 to 20% by mass, and further preferably 3 to 15% by mass.
  • the content is not more than the upper limit of the above range, moderate foamability and hardness can be obtained.
  • the effect of a crosslinking agent is fully acquired as it is more than the lower limit of the said range.
  • the isocyanate index is preferably 70 to 120, more preferably 80 to 110, and still more preferably 85 to 105, from the viewpoint of easily imparting desired physical properties to the flexible polyurethane foam formed by foaming the foaming stock solution.
  • the polyisocyanate contained in the foaming stock solution is preferably diphenylmethane diisocyanate having an isocyanate index of 70 to 120, more preferably 80 to 110, and still more preferably 85 to 105.
  • MDI Diphenylmethane diisocyanate
  • 4,4-MDI 4,4-diphenylmethane diisocyanate
  • 2,4-MDI 2,4-diphenylmethane diisocyanate
  • 2,2-diphenylmethane diisocyanate 2,2-diphenylmethane diisocyanate
  • 2,2-MDI polymeric MDI
  • crude MDI crude MDI
  • one type of MDI may be contained alone, or two or more types of MDI may be contained.
  • the isocyanate index means the percentage of the actual blending amount with respect to the necessary amount calculated by the stoichiometry of the polyisocyanate that reacts with all active hydrogen contained in the polyol or the like in the foaming stock solution.
  • the isocyanate index 90 is blended with polyisocyanate equivalent to 90% by mass with respect to the stoichiometrically necessary amount required to react with all active hydrogen contained in the polyol in the foaming stock solution.
  • the isocyanate index derived from MDI contained in the foaming stock solution is preferably 70 to 120.
  • the foaming stock solution can be easily stirred.
  • the isocyanate index is 120 or less, foam collapse can be prevented and a better foam can be easily obtained.
  • a small amount of a known polyisocyanate other than MDI may be added in addition to the MDI of (C).
  • TDI tolylene diisocyanate
  • triphenyl diisocyanate triphenyl diisocyanate
  • xylene diisocyanate polymethylene polyphenylene polyisocyanate
  • hexamethylene diisocyanate isophorone diisocyanate and the like
  • isophorone diisocyanate and the like.
  • the total content of one or more of diphenylmethane diisocyanate with respect to the total mass of polyisocyanate contained in the foaming stock solution is preferably 70% by mass or more, more preferably 80 to 100% by mass, still more preferably 90 to 100% by mass, and most preferably 95 to 100% by mass.
  • the foaming agent contained in the foaming stock solution it is preferable to use water. Since water reacts with polyisocyanate to generate carbon dioxide, it functions as a foaming agent.
  • the water content in the foaming stock solution is preferably 1 to 7 parts by mass and more preferably 2 to 5 parts by mass with respect to 100 parts by mass of the polyol.
  • Catalyst> Examples of the catalyst contained in the foaming stock solution include known catalysts used in the field of polyurethane foam. Known catalysts include amine catalysts and tin catalysts.
  • known catalysts are roughly classified into a resinification catalyst and a foaming catalyst.
  • a resinification catalyst accelerates
  • a catalyst having a ratio of the foaming catalyst constant to the gelation catalyst constant (foaming catalyst constant / gelation catalyst constant) of 1 or less is called a resinification catalyst.
  • the foaming catalyst promotes foaming rather than resinification.
  • a catalyst having a ratio of the foaming catalyst constant to the gelation catalyst constant of more than 1 is called a foaming catalyst.
  • the gelation catalyst constant is a constant that determines the speed of the resinification reaction between polyols and polyisocyanates, and the higher the value, the higher the crosslink density of the foam.
  • the reaction constant of the gelation reaction between tolylene diisocyanate and diethylene glycol is used.
  • the foaming catalyst constant is a constant that determines the speed of the foaming reaction between the polyisocyanates and water, and the larger the value, the higher the cell connectivity of the foam.
  • the reaction constant of the foaming reaction between tolylene diisocyanate and water is used.
  • the gelation catalyst constant and the foaming catalyst constant are determined by a known method.
  • the resinification catalyst examples include triethylenediamine (TEDA), a mixture of triethylenediamine and polypropylene glycol, N, N, N ′, N′-tetramethylethylenediamine, N, N, N ′, N′-tetramethylpropylene.
  • TAA triethylenediamine
  • polypropylene glycol N, N, N ′, N′-tetramethylethylenediamine, N, N, N ′, N′-tetramethylpropylene.
  • foaming catalyst examples include bis (2-dimethylaminoethyl) ether, N, N, N ′, N ′′, N ′′ -pentamethyldiethylenetriamine, N, N, N ′, N ′′, N ′ ′′, N ′ ′′ -hexamethyltriethylenetetramine, etc.
  • a tertiary amine catalyst is preferred.
  • the foaming stock solution contains at least a resination catalyst as a catalyst among a resination catalyst and a foaming catalyst.
  • the mass ratio of resinization catalyst: foaming catalyst contained in the foaming stock solution is preferably from 100: 0 to 100: 100, more preferably from 100: 0 to 100: 50, further preferably from 100: 0 to 100: 20. preferable.
  • the content of the amine-based catalyst in the foaming stock solution is preferably 0.1 to 5.0 parts by mass, and 0.3 to 3.0 parts by mass with respect to 100 parts by mass of the polyol. More preferred is 0.5 to 2.0 parts by mass.
  • foam collapse can be prevented.
  • a moderate reactivity can be obtained when it is not more than the upper limit of the above range.
  • a flexible polyurethane foam having excellent hysteresis loss and impact resilience is obtained.
  • the content of the tin catalyst in the foaming stock solution is preferably 0.001 to 1 part by mass with respect to 100 parts by mass of the polyol.
  • the foaming stock solution may contain a foam stabilizer.
  • foam stabilizer known foam stabilizers used in the field of polyurethane foam are applicable, and examples thereof include silicone foam stabilizers, anionic foam stabilizers, and cationic foam stabilizers. These foam stabilizers may include a foam stabilizer having a hydroxyl group at the molecular chain terminal.
  • the content of the foam stabilizer in the foaming stock solution is preferably 0.1 to 5 parts by mass, more preferably 0.5 to 3 parts by mass, and 0.7 to 2 parts by mass with respect to 100 parts by mass of the polyol. Further preferred. Usually, the effect as a foam stabilizer is sufficiently obtained at a content of 5 parts by mass or less. Moreover, the stirring rate of a polyol and polyisocyanate improves that it is a content rate of 0.1 mass part or more, and the flexible polyurethane foam which has a desired physical property is easy to be obtained.
  • additives may be added to the foaming stock solution as necessary.
  • coloring agents such as pigments, chain extenders, fillers such as calcium carbonate, flame retardants, antioxidants, UV absorbers, light stabilizers, conductive materials such as carbon black, antibacterial agents, etc. it can.
  • the compounding quantity of various additives is suitably adjusted according to a use and the objective.
  • the method for preparing the foaming stock solution is not particularly limited.
  • a mixture of the remaining raw materials excluding polyisocyanate (hereinafter sometimes abbreviated as “polyol mixture”) is prepared.
  • the preparation method which mixes with isocyanate and obtains foaming stock solution is mentioned.
  • the polyol mixture may be prepared by a known method. Thereafter, in the step of foam-molding the flexible polyurethane foam, the polyol mixture and polyisocyanate may be mixed.
  • the viscosity of the prepared polyol mixture at a liquid temperature of 25 ° C. is preferably 4,000 mPa ⁇ s or less, and more preferably 3,000 mPa ⁇ s or less.
  • the stirring efficiency of the foaming stock solution is improved, and a sufficient amount of foaming is obtained uniformly throughout the foaming stock solution, thereby obtaining a flexible polyurethane foam (foamed molded product) having desired physical properties. It becomes easy to be done.
  • a method for foam-molding a flexible polyurethane foam using the foaming stock solution is not particularly limited.
  • a known method for foaming by injecting a foaming stock solution into a cavity formed in a mold can be applied. .
  • the liquid temperature of the foaming stock solution to be injected is preferably 10 to 50 ° C.
  • the temperature of the mold is preferably 40 to 80 ° C.
  • appropriate foaming is easily obtained.
  • the polyol component and the polyisocyanate component are polymerized to form a polyurethane, and the polyurethane is cured as the polymerization proceeds. Thereafter, the desired flexible polyurethane foam is obtained by demolding.
  • the flexible polyurethane foam obtained here may be further subjected to a known film removal treatment.
  • the “soft” of the flexible polyurethane foam according to the present invention has a hardness (rigidity) to the extent that the flexible polyurethane foam is deformed and dented when it is pushed by hand or sitting on it. Means.
  • the flexible polyurethane foam according to the present invention preferably has the following physical properties.
  • the value (unit:%) is preferably 25 or more, more preferably 27 or more, and further preferably 30 or more.
  • the upper limit is preferably about 35, for example.
  • the value (unit:%) is preferably 60 or less, more preferably 55 or less, and even more preferably 52 or less. As a lower limit, about 40 is preferable, for example.
  • the impact resilience is in the above preferred range, the damping property of the flexible polyurethane foam is increased, the sense of stability (hold feeling) when sitting on the seat surface is improved, and excellent sitting comfort is obtained.
  • Examples 1 to 8, Comparative Example 1 In the formulation shown in Table 1, a mixed liquid containing components other than polyisocyanate and polyisocyanate were mixed to prepare a foaming stock solution. In the table, the unit of the numerical value of the raw material is part by mass. A sheet pad was manufactured by injecting this foaming stock solution into a mold and performing foam molding. About the obtained pad for sheets, performance was evaluated with the following measuring method. The results are also shown in Table 1.
  • PPG is the above-mentioned polyether polyol A, which is Sannix FA921 (manufactured by Sanyo Chemical Industries, Ltd.), which has a functional group number of 3, a weight average molecular weight of 6000, and an EO terminal polyol.
  • POP is the polymer polyol A ′ and is KC855 (manufactured by Sanyo Chemical Industries, Ltd.).
  • Crosslinking agent 1 is the polyol B, and is a polyether polyol of a polyether polyol (EO 100 mass%) having a functional group number of 4, a weight average molecular weight of 400, and a hydroxyl group of 561 mgKOH / g.
  • Crosslinking agent 2 is the polyol B, and is a polyether polyol (PO 100 mass%) having 3 functional groups, a weight average molecular weight of 700, and a hydroxyl value of 240 mgKOH / g.
  • Crosslinking agent 3 is the polyol B, which is a polyether polyol (PO 100 mass%) having 3 functional groups, a weight average molecular weight of 400, and a hydroxyl value of 420 mgKOH / g.
  • Crosslinking agent 4 is the above-mentioned polyol B, which is a polyether polyol (PO 100 mass%) having 3 functional groups, a weight average molecular weight of 1000 and a hydroxyl value of 168 mgKOH / g.
  • Crosslinking agent 5 is the polyol B, which is a polyether polyol (PO 100 mass%) having 3 functional groups, a weight average molecular weight of 1500, and a hydroxyl value of 112 mgKOH / g.
  • Crosslinking agent 6 is the polyol B, which is a polyether polyol (PO 75 mass%) having 6 functional groups, a weight average molecular weight of 750, and a hydroxyl value of 448 mgKOH / g.
  • the “resinification catalyst” is a mixture of triethylenediamine (TEDA) (33% by mass) and dipropylene glycol (DPG) (67% by mass) (product name: DABCO 33LV, manufactured by Air Products).
  • the “foam stabilizer” is a silicone foam stabilizer (manufactured by Momentive Performance Materials, trade name: Niax silicone L3627).
  • the “foaming agent” is water.
  • the “polyisocyanate” is an MDI-based isocyanate (manufactured by Sumika Covestrourethane Co., Ltd., trade name: J-243) and does not substantially contain a TDI-based isocyanate.
  • the NCO% of J-243 is 31.5%.
  • hysteresis loss of the sheet pad prepared above was measured according to the method of Japanese Industrial Standard JIS K 6400-2. As the numerical value (unit:%) increases, the damping property of the flexible polyurethane foam increases, the sense of stability (hold feeling) when sitting on the seat surface is improved, and excellent sitting comfort is obtained.
  • the flexible polyurethane foam according to the present invention can be widely used as a vehicle seat pad. According to the present invention, it is possible to provide a seat pad with improved stability (hold feeling) at the time of sitting and a flexible polyurethane foam forming the seat pad.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Polyurethanes Or Polyureas (AREA)

Abstract

La présente invention concerne une mousse souple de polyuréthane obtenue par moussage et façonnage d'une solution mère moussante comprenant un polyol, un polyisocyanate, un agent moussant et un catalyseur. Le polyol comprend : un polyétherpolyol A, le poids moléculaire pondéral moyen Mw étant de 3000 à 8000 et le nombre de groupes fonctionnels étant de 3 à 4; et un polyol B présentant un indice d'hydroxyle de 100 mg de KOH/g ou plus et qui comprend des groupes alkylèneoxy en C2-4, lesdits groupes alkylèneoxy comprenant uniquement des groupes propylèneoxy ou le rapport des groupes alkylèneoxy en C3 ou en C4 aux groupes éthylèneoxy (rapport en masse) dans lesdits groupes alkylèneoxy étant supérieur ou égal à 3. Le polyisocyanate comprend le diisocyanate de diphénylméthane.
PCT/JP2016/086892 2015-12-16 2016-12-12 Mousse souple de polyuréthane et coussin de siège WO2017104608A1 (fr)

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JP2015245705 2015-12-16

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03239716A (ja) * 1990-02-19 1991-10-25 Sanyo Chem Ind Ltd 軟質ポリウレタンフォーム形成組成物および製法
JPH08208797A (ja) * 1994-10-22 1996-08-13 Basf Ag 曇りの少ないポリウレタンフォームの製造法およびこれに使用される特殊なポリオキシアルキレン−ポリオール
JPH09176276A (ja) * 1995-12-22 1997-07-08 Takeda Chem Ind Ltd 低密度高弾性軟質ポリウレタンフォームの製造方法
JP2000290344A (ja) * 1999-04-07 2000-10-17 Mitsui Chemicals Inc エネルギー吸収軟質ポリウレタン発泡体及びその製造方法
JP2003505570A (ja) * 1999-07-26 2003-02-12 ハンツマン・インターナショナル・エルエルシー 常温硬化軟質フォームを製造するための方法、それに対して有用なポリオール組成物及び反応系、それによって得られるフォーム

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03239716A (ja) * 1990-02-19 1991-10-25 Sanyo Chem Ind Ltd 軟質ポリウレタンフォーム形成組成物および製法
JPH08208797A (ja) * 1994-10-22 1996-08-13 Basf Ag 曇りの少ないポリウレタンフォームの製造法およびこれに使用される特殊なポリオキシアルキレン−ポリオール
JPH09176276A (ja) * 1995-12-22 1997-07-08 Takeda Chem Ind Ltd 低密度高弾性軟質ポリウレタンフォームの製造方法
JP2000290344A (ja) * 1999-04-07 2000-10-17 Mitsui Chemicals Inc エネルギー吸収軟質ポリウレタン発泡体及びその製造方法
JP2003505570A (ja) * 1999-07-26 2003-02-12 ハンツマン・インターナショナル・エルエルシー 常温硬化軟質フォームを製造するための方法、それに対して有用なポリオール組成物及び反応系、それによって得られるフォーム

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