WO2006126402A1 - 軟質ポリウレタンフォームおよびその製造方法、該軟質ポリウレタンフォームを用いた自動車用シート - Google Patents
軟質ポリウレタンフォームおよびその製造方法、該軟質ポリウレタンフォームを用いた自動車用シート Download PDFInfo
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- WO2006126402A1 WO2006126402A1 PCT/JP2006/309499 JP2006309499W WO2006126402A1 WO 2006126402 A1 WO2006126402 A1 WO 2006126402A1 JP 2006309499 W JP2006309499 W JP 2006309499W WO 2006126402 A1 WO2006126402 A1 WO 2006126402A1
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- WIPO (PCT)
- Prior art keywords
- polyol
- polyurethane foam
- polymer
- flexible polyurethane
- deflection
- Prior art date
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- 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
- C08G2350/00—Acoustic or vibration damping material
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2205/00—Foams characterised by their properties
- C08J2205/06—Flexible foams
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2375/04—Polyurethanes
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2433/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
- C08J2433/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters
- C08J2433/06—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters of esters containing only carbon, hydrogen, and oxygen, the oxygen atom being present only as part of the carboxyl radical
Definitions
- the present invention relates to a novel flexible polyurethane foam suitable for urethane cushion materials having good riding comfort, particularly automobile seats.
- a seat cushion a combination of a pad material made of a metal panel and a flexible polyurethane foam (hereinafter referred to as a flexible foam) has been widely used.
- a flexible foam a combination of a pad material made of a metal panel and a flexible polyurethane foam (hereinafter referred to as a flexible foam) has been widely used.
- a full-foam type automobile seats that have abolished metal panels by giving panel characteristics to flexible foams themselves, such as cost down and light weight.
- the full-form sheet is thick because it does not use a metal panel.
- the characteristics of the flexible foam have become a factor that greatly contributes to seat comfort and ride comfort.
- static and dynamic characteristics which are indicators of sitting comfort and riding comfort, have come to be regarded as important in the development of flexible foam.
- the deflection value when a 500N load (newton load) is obtained which is obtained from the load-deflection curve force obtained by measurement using a pressure plate according to JIS E7104 (2002 edition), may be used.
- This pressure plate has an oval shape with a major axis A: 300 mm, a minor axis B: 250 mm, and a thickness C: 35 mm or more, and is referred to as a so-called Tekken type.
- polyoxyalkylene polyols generally used as raw materials for flexible foams use sodium Z potassium-based catalysts such as sodium hydroxide and potassium hydroxide, and initiators such as polyhydric alcohols. It is produced by ring-opening polymerization of an alkylene oxide such as propylene oxide.
- an unsaturated monool having an unsaturated bond hereinafter simply referred to as monool
- the amount of this monool generated is an increase in the molecular weight of the polyoxyalkylene polyol (decrease in the hydroxyl value). ) Increase with
- the load deflection characteristic is greatly influenced by the soft foam itself, so that when the load deflection amount is measured from above by the pressure plate,
- the pressure side is 500N to 900N, and the sheet has a relatively small deflection difference.
- Seats with a small difference in deflection have a feeling of bottoming, and the evaluation of ride comfort tends to be poor.
- full-form sheets have been handled by increasing the thickness of the foam in order to increase the deflection difference.
- Patent Document 3 As a technique for increasing the difference in deflection without increasing the thickness of the foam, the use of a fluorosurfactant having a perfluoroalkyl group structure has been proposed (Patent Document 3).
- Patent Document 3 proposes a fluorosurfactant having a perfluoroalkyl group structure.
- Patent Document 5 a technique using a polymer-dispersed polyol in which a fine particle polymer using a polymerizable unsaturated bond-containing monomer having a polysiloxane-containing group is dispersed
- Patent Document 6 A technique using a polymer-dispersed polyol in which fine-particle polymer containing a polymerizable unsaturated bond-containing monomer is dispersed (Patent Document 6) has been proposed, but it has been shown for application in the field of polyurethane foam.
- Patent Document 1 Japanese Patent Laid-Open No. 7-330843
- Patent Document 2 Japanese Patent Laid-Open No. 11-60676
- Patent Document 3 Japanese Patent Laid-Open No. 11-322875
- Patent Document 4 Japanese Patent Laid-Open No. 5-320304
- Patent Document 5 JP-A-5-262833
- Patent Document 6 JP-A-6-107763
- the present invention provides a novel flexible polyurethane foam having good vibration characteristics and excellent occupant posture retention.
- the present invention comprises the following gist that attempts to solve the above problems.
- a flexible polyurethane foam obtained by reacting a polyol composition and a polyisocyanate compound in the presence of a catalyst, a foaming agent, and a foam stabilizer, the polyol composition
- Physical strength Polymer polyoxyalkylene polyol (A1) and polymer dispersed polyol (A2) force containing polymer fine particles in polymer polyoxyalkylene polyol (A1), and polymer fine particles contained in the polymer dispersed polyol (A2)
- a flexible polyurethane foam characterized in that at least a part of the polymer is a polymer fine particle having a silicon atom.
- the polyol composition comprises polymer polyoxyalkylene polyol (A1) and polymer fine particles in polymer polyoxyalkylene polyol (A1).
- a polymer polyoxyalkylene polyol A1
- polymer fine particles in polymer polyoxyalkylene polyol (A1)
- A2 polymer fine particle having a silicon atom.
- the polymer fine particles having a key atom are polymer fine particles obtained by polymerizing a monomer containing a key-containing talate or a key-containing metatalate.
- the above-mentioned key element-containing arylate or key element-containing metatarrate is preferably represented by the following formula (1), formula (2), or formula (3).
- R 1 in the formula (2) is an alkyl group having 1 to 20 carbon atoms
- n in the formulas (1) and (2) is an integer of 1 to: LOOO
- the formula (1) Z in (3) is an organic group represented by formula (4) (wherein R 2 is an alkylene group having 1 to 20 carbon atoms, and R 3 is a hydrogen atom or a methyl group).
- a polyol composition having high polymer polyoxyalkylene polyol (A1) and polymer-dispersed polyol (A2) force is used.
- the polymer polyoxyalkylene polyol (A1) used in the production of the flexible polyurethane foam of the present invention is a cyclic ether opened in the presence of a polymerization catalyst using an active hydrogen compound having an average hydroxyl number of 2 to 6 as an initiator. Those obtained by polymerization are preferred. A molecular weight per hydroxyl group of 500 or more is preferred. The molecular weight per hydroxyl group is particularly preferably 1500-2500.
- the average number of hydroxyl groups of the polymer polyoxyalkylene polyol is the average number of hydroxyl groups of the initiator used.
- the high molecular weight polyoxyalkylene polyol (A1) has a hydroxyl value measured based on JIS K155 7 (1970 edition) as a molecular weight converted using the following formula.
- Examples of the polymerization catalyst include potassium compounds such as potassium hydroxide and potassium methoxide, alkali metal compounds such as cesium compounds such as cesium metal, cesium hydroxide, cesium carbonate, and cesium methoxide, or alkali metal water.
- alkali metal compounds such as cesium compounds such as cesium metal, cesium hydroxide, cesium carbonate, and cesium methoxide, or alkali metal water.
- examples thereof include acid oxides; cationic polymerization catalysts such as boron trifluoride; double metal cyanide complexes; phosphaze-um compounds.
- the complex metal cyanide is preferred. It is particularly preferred to use a product complex.
- the double metal cyanide complex catalyst for example, those described in JP-B-46-27250 can be used.
- a specific example is zinc hexanocobaltate as the main component.
- the ether and Z or alcohol complexes thereof are preferred.
- Ethers include ethylene glycol dimethyl ether (glyme), diethylene glycol dimethyl ether (diglyme), ethylene glycol mono-tert-butyl ether (METB), ethylene glycol mono-tert-pentyl ether (METP), diethylene glycol mono-tert-butyl ether (DETB), Tripropylene glycol monomethyl ether (TPME) and the like are preferable.
- the alcohol tert-butyl alcohol and the like are preferable.
- Preferred examples of the cyclic ether to be used for the ring-opening polymerization include alkylene oxides having 2 or more carbon atoms, such as ethylene oxide, propylene oxide, 1,2-butylene oxide, and 2,3-butylene oxide. And styrene oxide.
- alkylene oxides having 2 or more carbon atoms such as ethylene oxide, propylene oxide, 1,2-butylene oxide, and 2,3-butylene oxide.
- styrene oxide A combination of ethylene oxide and at least one selected from propylene oxide, 1,2-butylene oxide, and 2,3-butylene oxide is particularly preferable.
- the polymer polyoxyalkylene polyol (A1) preferably has an oxyethylene group, and preferably has an oxyethylene group at the terminal. Further, it may be a polyoxyalkylene polyol having an oxyethylene group inside.
- the polyoxyalkylene polyol having an oxethylene group therein can be obtained, for example, by ring-opening polymerization by sequentially or mixing an initiator, an alkylene oxide having 3 or more carbon atoms and ethylene oxide.
- the polyoxyalkylene polyol having an oxyethylene group at the terminal can be obtained, for example, by ring-opening polymerization of an initiator and an alkylene oxide having 3 or more carbon atoms, and then ring-opening polymerization of ethylene oxide. Furthermore, the initiator, the alkylene oxide having 3 or more carbon atoms, and the ethylene oxide, which are obtained sequentially or mixed, are obtained by ring-opening polymerization and then obtained by ring-opening polymerization of ethylene oxide.
- the lower limit of the content of the terminal oxyethylene group in the polyoxyalkylene polyol (A1) is preferably 3% by mass, particularly preferably 5% by mass.
- the upper limit is preferably 25% by mass.
- the content of the terminal Okishiechiren groups 3 mass 0/0 or more can effectively suppress the occurrence of collapse and the like of the form.
- the foam does not increase in the number of closed cells, and the foam breaks during the crushing process or after the crushing process. This is preferable because it prevents shrinkage.
- the total oxyethylene group content is preferably 30% by mass or less.
- Examples of the initiator include ethylene glycol, diethylene glycol, dipropylene glycol, neopentyl glycol, 1,4 butanediol, 1,6 hexanediol, glycerin, trimethylolpropane, pentaerythritol, diglycerin, dextrose, Examples thereof include sucrose, bisphenol A, and the like, or compounds obtained by adding a small amount of alkylene oxide thereto. One or a combination of two or more of these is preferred. If the average number of hydroxyl groups is less than 2, foam durability and ride comfort may be reduced. On the other hand, when the average number of hydroxyl groups is larger than 6, the produced flexible foam tends to be hard and mechanical properties such as elongation tend to be deteriorated.
- the polyoxyalkylene polyol (a) is a polyoxyalkylene polyol having a degree of unsaturation of not more than 0.07 meqZg in the polymer polyoxyalkylene polyol (A1) (hereinafter also referred to as polyol (a)).
- polyol (a) the polyoxyalkylene polyol having a degree of unsaturation of not more than 0.07 meqZg in the polymer polyoxyalkylene polyol (A1) (hereinafter also referred to as polyol (a)).
- polyol (a) the high-molecular polyoxyalkylene polyols (A1)
- the ratio of the polymer polyoxyalkylene polyol (A1) to the polyol (a) is the same as the polymer fine particles. Calculate based on the mass of the polyol.
- the average molecular weight per hydroxyl group of the polyol (a) is preferably 500 or more, more preferably 1000 to 5000, and particularly preferably 1500 to 2500. If the average molecular weight per hydroxyl group is less than 1500, the durability and ride comfort of the polyurethane foam may deteriorate. On the other hand, if it is greater than 2500, the viscosity of the polyol will increase and workability will decrease.
- the polyol (a) preferably contains an oxyethylene group at the terminal, and the range is as described for the polymer polyoxyalkylene polyol (A1).
- the polyol (a) is preferably a polyol having an oxypropylene group content of 70% by mass or more, particularly preferably 75% by mass or more.
- the polyol (a) has an unsaturation degree of 0.07 meqZg or less, particularly preferably 0.05 meqZg or less. When the degree of unsaturation of the polyol (a) is greater than 0.07 meqZg, the durability and ride comfort of the polyurethane foam may be lowered.
- the polymer-dispersed polyol (A2) containing polymer fine particles in the polymer polyoxyalkylene polyol (A1) is used.
- the polymer-dispersed polyol (A2) contains polymer fine particles in a polyoxyalkylene polyol matrix, and the polymer fine particles are preferably contained stably dispersed.
- the content of the polymer fine particles contained in the polymer-dispersed polyol (A2) is preferably 50% by mass or less. When the content of polymer fine particles is more than 50% by mass, the viscosity becomes high, which may be inconvenient. It is preferable that the polymer fine particles are contained in an amount of 1 to 35% by mass in the polymer-dispersed polyol (A2).
- the concentration of the polymer fine particles in the polyol composition is preferably from 0.1 to 50% by mass, more preferably from 0.01 to 15% by mass, based on 100% by mass of the entire polyol composition containing polymer fine particles.
- addition polymerization polymers and condensation polymerization polymers are preferred. Addition polymerization polymers are particularly preferred.
- polymer particles having a silicon atom are used as at least a part of the polymer particles.
- the polymer fine particles having a silicon atom are polymer fine particles obtained by polymerizing a monomer containing a silicon-containing (meth) acrylate.
- Examples of the addition polymerization-based polymer include acrylonitrile, styrene, a silicon atom, a polymerizable unsaturated bond containing (meth) acrylate, or (meth) acrylate containing carbon. Examples include homopolymers and copolymers of monomers.
- polycondensation polymer examples include polyester, polyurea, polyurethane, and melamine resin.
- R 1 in the formula (2) is an alkyl group having 1 to 20 carbon atoms (which may or may not be branched). Alkyl having 1 to 10 carbon atoms Particularly preferred is an alkyl group having 1 to 6 carbon atoms, which is preferred by the group.
- N in the formulas (1) and (2) is an integer of 1 to: LOOO, but an integer of 1 to 300 is preferred, and an integer of 1 to 200 is particularly preferred. When n is from 1 to 1000, foam stability at the time of foaming is good, which is preferable.
- Z in the formulas (1) to (3) is an organic group represented by the formula (4).
- R 2 is an alkylene group having 1 to 20 carbon atoms (branched! /, Or may be omitted) Carbon having 1 to 10 carbon atoms is preferred U, especially preferred are the alkylene groups of the numbers 1-6.
- R 3 is a hydrogen atom or a methyl group.
- the above-mentioned caged (meth) acrylate may be polymerized alone or may be copolymerized with other polymerizable unsaturated bond-containing monomers, but from the viewpoint of stability in the polyol. Polymerization is preferred L ⁇ . Can also be used in combination with a C-containing (meth) acrylate!
- polymerizable unsaturated bond-containing monomers include: -tolyl monomers such as acrylonitrile, meta-tallow-tolyl; styrene, a- Styrenic monomers such as methinorestyrene; having fluorine atoms such as methenoremetatalylate, ethinoremetatalylate, hydroxyxetylmetatalylate, methyl acrylate, ethyl acrylate, hydroxyethyl acrylate.
- Examples thereof include (meth) acrylate monomers; butyl ester monomers such as acetic acid vinyl; butyl ether monomers such as methyl butyl ether; unsaturated fatty acid monomers such as maleic acid diester. Two or more of these monomers may be used in combination.
- the other polymerizable unsaturated bond-containing monomer nitrile monomers, styrene monomers, and (meth) acrylate monomers having no fluorine atom are preferred. Methyl methacrylate is particularly preferred.
- polymer fine particles obtained by polymerizing (homopolymerizing or copolymerizing) a silicon-containing (meth) acrylate are used as at least part of the polymer fine particles of the polymer-dispersed polyol (A2).
- polymer fine particles obtained by polymerizing a monomer containing a carbon-containing (meth) acrylate, and polymer fine particles obtained by polymerizing a monomer that does not contain a carbon-containing (meth) acrylate It is preferable to use together.
- the proportion of the polymer fine particles obtained by polymerizing the monomer containing the carbon-containing (meth) acrylate is 0.0001 (1 ⁇ 10 ” 4 ) ⁇ 30% by mass is preferred 0.001 to 10% by mass is more preferred, and the proportion of all polymer fine particles that are directly derived from the (meth) acrylate monomer (manufacturing polymer fine particles) containing Kei containing (meth) ratio of Atari rate mono mer) to the mass of all the monomers used to the, 0.
- the proportion of free Kei containing (meth) polymer particles obtained by polymerizing a mono mer containing Atari rate of the polyol composition, 0. 00001 (1 X 10 one 5) - force S preferably 5 wt%, from 0.0001 to 0.5 mass 0/0 is more preferable.
- a known production method can be employed as a method for producing the polymer-dispersed polyol (A2).
- this is a production method for obtaining a polymer-dispersed polyol (A2) by polymerizing a polymerizable unsaturated bond-containing monomer in a polymer polyoxyalkylene polyol (A1) in the presence of a solvent or a grafting agent as necessary.
- a grafting agent In the production method, after polymerizing a polymerizable unsaturated bond-containing monomer in a solvent, the solvent is replaced with the polymer polyoxyalkylene polyol (A1) to obtain a polymer-dispersed polyol (A2).
- the former production method is preferred from the viewpoint of the stability of polymer fine particles.
- a polymerization initiator that usually generates a free radical and starts the polymerization is used.
- a polymerization initiator that usually generates a free radical and starts the polymerization
- AMBN 2,2-azobis-2-methylbutyronitrile
- 2,2-azobis 2,4 dimethylvale-tolyl benzoy
- benzoy examples include ruperoxide, diisopropyl peroxide, carbonate, acetyl butyl peroxide, persulfate, and the like.
- AIBN and AMBN are particularly preferable.
- the polymerization initiator is used in a total amount of 100% by mass of the polymer polyoxyalkylene polyol (A2), the carbon-containing (meth) acrylate, the other polymerizable unsaturated bond-containing monomer, and the grafting agent. On the other hand, 0.01 to 10% by mass is preferable.
- the polymerization reaction is performed at a temperature equal to or higher than the decomposition temperature of the polymerization initiator, usually 80 to 160 ° C, preferably 90 to 150. C, particularly preferably 100-130. Performed in the C range.
- the obtained polymer-dispersed polyol (A2) can be used as a raw material for the flexible polyurethane foam as it is. Stability of the polymer-dispersed polyol (A2) It is preferable to use after removing.
- the production method of the polymer-dispersed polyol (A2) a part of the polymer polyoxyalkylene polyol (A1) is charged into a reactor, and the remaining polymer polyoxyalkylene polyol ( A1), there is a batch method in which polymerization is performed by gradually feeding a mixture of a polymerizable unsaturated bond-containing monomer, a polymerization initiator and the like.
- a mixture of a polymer polyoxyalkylene polyol (A1), a polymerizable unsaturated bond-containing monomer, a polymerization initiator, etc. is continuously fed to a reactor with stirring, and the polymer-dispersed polyol (A2) produced at the same time is included.
- the present invention can be produced by either method. A solvent, a chain transfer agent, etc. can be used as needed.
- the polymer-dispersed polyol (A2) can also be produced below.
- Examples of the solvent include alcohols such as methanol, ethanol, isopropanol, butanol, cyclohexanol and benzyl alcohol; aliphatic hydrocarbons such as pentane, hexane, cyclohexane and hexene; benzene, toluene, Aromatic hydrocarbons such as xylene; Ketones such as acetone, methyl ethyl ketone, and acetophenone; Esters such as ethyl acetate and butyl acetate; Isopropyl ether, Tetrahydrofuran, Benzyl ethinoreethenole, Acetanol, Ethers such as solenole, methinole tert-butinoleethenole; halogenated hydrocarbons such as chlorobenzene, chloroform and dichloroethane; -tolyls such as aceton
- these solvents can be used alone or in combination.
- the solvent is removed. Solvent removal is usually performed by heating under reduced pressure. However, it can also be carried out under normal pressure heating or reduced pressure at room temperature. At this time, unreacted monomers are also removed together with the solvent.
- polymerization can also be carried out using a chain transfer agent.
- a chain transfer agent an alkyl mercaptan is preferably used.
- alkyl mercaptans include dodecyl mercaptan and mercaptoethanol.
- (A2) is obtained.
- a grafting agent (stabilizer) can be used to improve the dispersion stability of the polymer fine particles.
- the grafting agent is preferably a compound having a double bond in the molecule.
- a high molecular weight polyol or monool obtained by reacting an alkylene oxide with an active hydrogen compound having a double bond-containing group such as a vinyl group, an aryl group or an isopropyl group as an initiator; After reacting with an unsaturated carboxylic acid such as itaconic anhydride, maleic acid, fumaric acid, atalic acid, methacrylic acid or the acid anhydride thereof, an alkylene oxide such as propylene oxide or ethylene oxide, if necessary.
- a high molecular weight polyol or monool obtained by attaching a 2-hydroxyethyl acrylate.
- Examples thereof include a reaction product of an unsaturated alcohol such as butenediol and another polyol and a polyisocyanate; a reaction product of an unsaturated epoxy compound such as allylglycidyl ether and a polyol. These compounds preferably have a hydroxyl group but are not limited thereto.
- the polyol composition also serves as a polymer polyoxyalkylene polyol (A1) and a polymer-dispersed polyol (A2).
- polyols other than those mentioned above may be included.
- the proportion of the other polyol is preferably 0 to 10% by mass of the polyol composition, and particularly preferably 0 to 8% by mass.
- the proportion of polymer Porioki sialic sharp emission polyol (A1) in the polyol composition, 40 to 95 weight 0/0 preferably tool particularly, is preferably 40 to 85 wt%.
- the proportion of the polymer-dispersed polyol (A2) in the polyol composition is preferably 5 to 60% by mass, particularly preferably 15 to 60% by mass.
- the foam stabilizer it is preferable to use a silicone compound.
- a silicone foam stabilizer usually used for flexible urethane foam can be used.
- the amount of the silicone-based foam stabilizer used is preferably from 0.001 to 3 parts by weight, particularly preferably from 0.1 to 2 parts by weight, based on 100 parts by weight of the total polyol composition.
- the polyisocyanate compound used in the production of the polyurethane foam of the present invention includes tolylene diisocyanate (TDI), diphenylmethane diisocyanate (MDI), polymethylene polyphenol, which are preferable aromatic polyisocyanates. -Lepolyisocyanate (crude MDI), etc. These may be a mixture. A mixture of TDI and Crude MDI, 85Z 15-75 / 25 (mass ratio) is preferred.
- the amount of the polyisocyanate compound used is a value represented by 100 times the number of isocyanate groups relative to the total number of active hydrogens such as polyoxyalkylene polyol and water (usually this number is the isocyanate index). Is preferably 80 to 120, and particularly preferably 85 to 115.
- foaming agent As the foaming agent in the present invention, one or more foaming agents selected from water and inert gas power are preferably used.
- the inert gas include air, nitrogen, carbon dioxide, and the like. It is preferred to use only water.
- the amount of these foaming agents used is not particularly limited.
- a foam breaker may be used.
- the foam breaker a polyol having an average number of hydroxyl groups of 2 to 8, a hydroxyl value of 20 to 100 mgKOH / g, and an oxyethylene group content of 50 to 100% by mass is preferable.
- the amount of the foam breaker used is preferably from 0.01 to 10 parts by weight, particularly preferably from 0.1 to 10 parts by weight, based on 100 parts by weight of the polyol composition (however, this foam breaker is not included).
- a crosslinking agent may be used.
- a polyol having an average number of hydroxyl groups of 2 to 8 and a hydroxyl value of 200 to 2000 mgKOHZg is preferable.
- the amount of the crosslinking agent used is particularly preferably from 0.5 to 10 parts by mass with respect to 100 parts by mass of the polyol composition (however, the crosslinking agent is not included).
- stimulates a urethanation reaction can be used.
- tertiary ethyleneamines such as triethylenediamine, bis [(2-dimethylamino) ethyl] ether, N, N, ⁇ ', N, monotetramethylhexamethylenediamine, potassium acetate, 2-
- carboxylic acid metal salts such as ethyl hexyl hexanoate
- organometallic compounds such as dibutyltin dilaurate and stannous octoate.
- anti-aging agents such as emulsifiers, antioxidants and ultraviolet absorbers
- fillers such as carbonated potassium and barium sulfate
- various known additives such as flame retardants, plasticizers, colorants and anti-fungal agents
- An auxiliary can be used as needed.
- Manufacture of flexible polyurethane foam 'molding is a method in which a reactive mixture is directly injected into a mold using a low-pressure foaming machine or a high-pressure foaming machine (that is, a reaction injection molding method), or a reactive mixture is applied to an open mold. It is preferred to be done by injection method. High pressure foaming machines are preferred to mix two normal liquids, one of which is a polyisocyanate compound and the other is a mixture of all raw materials other than polyisocyanate compound .
- a reactive mixture can be prepared and injected with a total of three components including a catalyst, a foam breaker (usually dispersed or dissolved in some high molecular weight polyoxyalkylene polyols) and the like as separate components.
- the flexible polyurethane foam of the present invention can be produced by a method including a heating step, for example, other than the force cold cure method that is usually produced by a cold cure method.
- the core density of the flexible polyurethane foam of the present invention is adapted to signaling seat cushion for an automobile preferred that a 30 ⁇ 70KgZm 3, the core density is particularly preferably 35 ⁇ 60kg / m 3. If the core density is less than the 30kgZm 3, durability, ride comfort is you worse. If the core density exceeds 70 kgZm 3 , durability and ride comfort are good, but this is not preferable because it hinders fuel cost improvement.
- the hardness of the flexible polyurethane foam of the present invention is 25% hardness (ILD) measured according to JIS K6400 (1997 edition) for a foam obtained by foaming to a thickness of 100 mm. It is preferable to be ⁇ 500 N / 314 cm 2 , more preferably 180 to 350 N / 314 cm 2 . If it is lower than 180 N / 314 cm 2 , the support feeling of the passenger is impaired, which is not preferable. On the other hand, if it exceeds 500NZ314cm 2, since the deflection of the sheet is reduced, unfavorably lowering the ride comfort.
- ILD 25% hardness
- the flexible polyurethane foam of the present invention the foam obtained by foaming into a thickness of 100 mm, 25% hardness was measured in accordance with JIS K6400 (1997 year edition) a (ILD) ⁇ ( ⁇ 314cm 2 ) , 90 ON pressure side deflection value obtained from a load deflection curve measured using a pressure plate (Iken type) conforming to JIS E7104 (2002 edition) at a constant speed of 10 mm Zs or less
- the value obtained by subtracting the deflection value on the pressure side of 500N (pressure difference on the pressure side) is Y (mm), and it is preferable to satisfy the relational expression expressed by equation (5).
- the flexible polyurethane foam of the present invention uses a pressure plate (Iken type) conforming to JIS E7104 (2002 edition) for the foam obtained by foaming to a thickness of 100 mm. 1
- a pressure plate Iken type conforming to JIS E7104 (2002 edition) for the foam obtained by foaming to a thickness of 100 mm. 1
- the value obtained by subtracting the pressure side deflection value (pressure side deflection difference) Y (mm) is preferably 22.5-33.0 mm. 23. 0-33. Particularly preferred is Omm.
- the deflection value on the 500N pressure side is 5.0 to 55. Omm, the deflection value on the 500N pressure side is changed from the deflection value on the 900N pressure side when the foam thickness is 100mm to the bow IV, deflection value (difference on the pressure side deflection) Y
- (mm) is less than 22.5 mm, the feeling of bottoming of the sheet is slightly generated, which is not preferable.
- the deflection difference on the pressure side (mm) Y exceeds 33. Omm, the posture retention is deteriorated, which is preferable.
- the flexible polyurethane foam of the present invention is a foam obtained by further foaming to a thickness of 100 mm, and using a pressure plate (Ikenken) conforming to JIS E7104 (2002 edition).
- Deflection value of 500N calo pressure J obtained from a load-deflection curve measured by applying a load at a constant speed of OmmZs or less 8. 0 to 55.
- the value obtained by subtracting the deflection value on the 500N pressure side from the force (pressure side deflection difference) Y (mm) is more preferably 22.5-33.0 mm. 23.0-33. Omm More preferred.
- Tables 3 to 5 show the formulation (unit: parts by mass) at the time of foam production and the foam physical properties, vibration characteristics and moldability of the obtained flexible polyurethane foam.
- Examples 1 to 6 are Examples, and Example 7 is a Comparative Example.
- Foam physical properties include total density (unit: kgZm 3 ), core density (unit: kgZm 3 ), 25% hardness (ILD) (unit: NZ314 cm 2 ), core rebound resilience (unit:%;) , Tear strength (unit: NZcm), tensile strength (unit: kPa), elongation (unit:%), dry heat compression set (Dry
- the density of the core part and the rebound resilience of the core part were measured using a sample cut into dimensions of 100 mm in length and width and 50 mm in height, excluding the skin part from the center of the foam.
- the test method for obtaining the load-deflection curve is to use a pressure plate that is oblong with a major axis A: 300 mm, minor axis B: 250 mm, and thickness C: 35 mm or more according to JIS E7104 (2002 edition). 1. Measurement was performed by applying a load at a constant speed of 7 mmZs. The deflection value (mm) when a load of 500 N (Newton load) was applied was obtained from the deflection curve for the load.
- the pressure-side deflection difference Y (mm) was obtained from the pressure-side deflection value (mm) at a load of 900 N and the pressure-side deflection value at a load of 500 N (the latter was subtracted from the former and Y was taken as the value).
- the 25% hardness (ILD) was X (NZ314cm 2 ), and the value of y was calculated from the following formula (6).
- the vibration characteristics include resonance frequency (unit: Hz), resonance magnification (absolute displacement measurement) and 6 Hz transmission. Reach rate was evaluated. Resonance frequency, resonance magnification (absolute displacement measurement), 6Hz transmission rate (absolute displacement measurement) «Measured in accordance with JASO B407-87.
- a steel plate load: 490N was used as the pressure plate, and the total amplitude of vibration was 5 mm.
- crushing property is an evaluation of foam connectivity.
- pressure was applied through the obtained flexible polyurethane foam through a roller to evaluate the load required to connect the foam cells. The lower the foaming rate of the foam, that is, the better the communication, the smaller the required load.
- Polyol Ala Polyoxypropyleneoxy having an average number of hydroxyl groups of 3, hydroxyl value of 33 mgKOHZg (molecular weight per hydroxyl group of 1700), unsaturation of 0.04 meqZg, and containing 16% by weight of polyoxyethylene groups at the end Ethylene polyol.
- Polyol Ale Propylene oxide was subjected to ring-opening addition polymerization using glycerin as an initiator using a potassium hydroxide hydroxide catalyst and purified to obtain a polyoxypropylene polyol having a molecular weight of 1500.
- glycerin an initiator using a potassium hydroxide hydroxide catalyst
- a polyoxypropylene polyol having a molecular weight of 1500.
- This polyoxyalkylene polyol was purified by ring-opening addition polymerization of ethylene oxide lOOOg using a potassium hydroxide catalyst.
- Polyol A2a A polymer-dispersed polyol obtained by co-polymerizing acrylonitrile and styrene in the polyol Alb described above and having a fine particle polymer amount of 35% by mass.
- Crosslinking agent dl diethanolamine.
- Crosslinking agent d2 A polyoxyethylene polyol having an average number of hydroxyl groups of 4 and a hydroxyl value of 562 mg KOHZg (molecular weight per hydroxyl group is 100).
- Catalyst el Diethylene glycol solution of triethylenediamine.
- Product name Toso Corporation
- Catalyst e2 Dipropylene glycol solution of bis ([2-dimethylamino) ethyl] ether.
- Silicone foam stabilizer fl Trade name: SZ-1355 manufactured by Toray Industries, Inc.
- Silicone foam stabilizer f 2 Product name: Toray 'SZ-1327 manufactured by Dowko Jung Co., Ltd. Silicone foam stabilizer f3: Trade name: SZ-1325 manufactured by Toray 'Dowcoung Corporation.
- Polyisobutylene Xia sulfonate j TDI (2, 4-tolylene iso Xia sulfonate / 2, 6-tolylene iso Xia titanate is 80Z20 mass 0/0 mixture of: T-80) and polymethylene poly Hue - the Ruporiisoshiane over preparative 80Z20 wt% mixture, NCO group content 44.8%.
- the polyol Alb Charge the polyol Alb to the reactor and keep it at 120 ° C while maintaining the mass ratio shown in Table 2 with the carbon-containing metatalylate, other polymerizable unsaturated bond-containing monomer, grafting agent, solvent (methyl-tert-butyl ether) Then, the mixture of the polymerization initiator (AMBN) was fed over 1 hour with stirring, and stirring was continued at the same temperature for about 0.5 hours after the completion of all the feeds. After completion of the reaction, the obtained polymer-containing polymer-dispersed polyol was heated and degassed under reduced pressure at 120 ° C. and 0. OlkPa to remove unreacted monomers and solvent.
- AMBN polymerization initiator
- Table 2 shows the hydroxyl value and viscosity of the obtained carbon-containing polymer dispersion polyol together with the mass ratio of the raw materials used in the reaction.
- Table 1 shows the structures of the carbon-containing metatalates pl to p3.
- R 1 is a symbol in equation (2)
- n is a symbol in equation (2)
- R 2 is a symbol in equation (4).
- a reactor was charged with polyoxypropyleneoxyethylene polyol having an average number of hydroxyl groups of 3, a hydroxyl value of 26 mgKOHZg and a total oxyethylene content of 8.7% by mass, and 2-hydroxysethyl methacrylate (2-HEMA).
- Isocyanate (T-80) and triethylamine were added and stirred and reacted at 80 ° C. This ratio is 1 mol of 2-HEMA and 1 mol of toluene diisocyanate with respect to 1 mol of the above polyoxypropyleneoxyethylene polyol.
- a vacuum treatment was performed at 80 ° C. to remove unreacted monomers.
- the product thus obtained was used as a grafting agent.
- Example 1 2 3 4 Polyol A 1 a 60 60 60 60 60 Polyol A 2 a 40 40 40 40 40 40 Crosslinker d 1 0. 5 0. 5 0. 5 0. 5 Littering agent d 2 3. 0 3. 0 3 0 3. 0 Catalyst e 1 0. 45 0. 45 0. 45 0. 45 0. 45 0. 45 Catalyst e 2 0. 07 0. 07 0. 07 0. 07 0. 07 Silicone foam stabilizer f 1 0. 4 0. 4 0. 4 0.4 Silicone foam stabilizer f 2 0. 4 0. 4 0. 4 0. 4 C-containing polymer 0.1
- Dispersed polyol g 1 Dispersed polyol g 1
- Example 5 Polyol A 1 c 60 60 Polyol A 2 a 40 40 Crosslinker d 1 0. 5 0.5 Crosslinker d 2 3. 0 3. 0 Catalyst e 1 0. 45 0. 45 Catalyst e 2 0. 07 0. 07 Silicone foam stabilizer f 3 0. 4 0. 4 Silicone foam stabilizer f 2 0. 4 0. 4 C-containing polymer monodispersed polyol g 1
- the flexible urethane foam of the present invention is a 90 ON-500N pressure side in a foam foamed to a thickness of 100 mm by using a specific silicone-containing polymer monodispersed polyol. The difference in deflection becomes larger, and a foam with less bottoming can be obtained. All of the contents shown in these examples are particularly excellent in vibration characteristics, particularly resonance magnification, and 6 Hz transmission rate, and in good riding comfort.
- the flexible polyurethane foam of the present invention is used for cushions, seats and the like. In particular, it is suitable as a vehicle seat, and among them, it is suitable as an automobile seat.
- the entire contents of the specification, claims, and abstract of Japanese Patent Application No. 2005-153103 filed on May 25, 2005 are hereby incorporated by reference. It is something that is incorporated.
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Dispersion Chemistry (AREA)
- Polyurethanes Or Polyureas (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2006800177804A CN101180336B (zh) | 2005-05-25 | 2006-05-11 | 软质聚氨酯泡沫塑料及其制造方法、利用该软质聚氨酯泡沫塑料的汽车用座垫 |
EP06732530A EP1884528A4 (en) | 2005-05-25 | 2006-05-11 | POLYURETHANE FUEL, MANUFACTURING METHOD AND CAR SEAT WITH THE POLYURETHANE FUEL |
JP2007517769A JP5145935B2 (ja) | 2005-05-25 | 2006-05-11 | 軟質ポリウレタンフォームおよびその製造方法、該軟質ポリウレタンフォームを用いた自動車用シート |
US11/944,665 US7759403B2 (en) | 2005-05-25 | 2007-11-26 | Flexible polyurethane foam, process for its production, and seat for automobile using the flexible polyurethane foam |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005153103 | 2005-05-25 | ||
JP2005-153103 | 2005-05-25 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/944,665 Continuation US7759403B2 (en) | 2005-05-25 | 2007-11-26 | Flexible polyurethane foam, process for its production, and seat for automobile using the flexible polyurethane foam |
Publications (1)
Publication Number | Publication Date |
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WO2006126402A1 true WO2006126402A1 (ja) | 2006-11-30 |
Family
ID=37451828
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2006/309499 WO2006126402A1 (ja) | 2005-05-25 | 2006-05-11 | 軟質ポリウレタンフォームおよびその製造方法、該軟質ポリウレタンフォームを用いた自動車用シート |
Country Status (7)
Country | Link |
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US (1) | US7759403B2 (ja) |
EP (1) | EP1884528A4 (ja) |
JP (1) | JP5145935B2 (ja) |
KR (1) | KR20080017319A (ja) |
CN (1) | CN101180336B (ja) |
TW (1) | TW200712085A (ja) |
WO (1) | WO2006126402A1 (ja) |
Families Citing this family (13)
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KR101115276B1 (ko) * | 2003-09-19 | 2012-03-05 | 아사히 가라스 가부시키가이샤 | 연질 폴리우레탄 폼 및 그 제조 방법 |
TW200801060A (en) | 2006-02-28 | 2008-01-01 | Asahi Glass Co Ltd | Flexible polyurethane foam and process for producing the same |
EP2067804A4 (en) * | 2006-09-27 | 2012-10-31 | Asahi Glass Co Ltd | PROCESS FOR PRODUCING SOFT POLYURETHANE FOAM |
DK2077287T3 (da) * | 2006-10-25 | 2013-07-22 | Asahi Glass Co Ltd | Fremgangsmåde til fremstilling af blødt polyurethanskum |
WO2008075725A1 (ja) * | 2006-12-19 | 2008-06-26 | Asahi Glass Company, Limited | 軟質ポリウレタンフォームの製造方法 |
WO2009001783A1 (ja) * | 2007-06-22 | 2008-12-31 | Asahi Glass Company, Limited | ポリマー分散ポリオールおよび軟質ポリウレタンフォームの製造方法 |
JP5303885B2 (ja) | 2007-09-18 | 2013-10-02 | 旭硝子株式会社 | 軟質ポリウレタンフォームの製造方法および軟質ポリウレタンフォーム |
JP5229229B2 (ja) * | 2007-09-28 | 2013-07-03 | 旭硝子株式会社 | 軟質ポリウレタンフォームおよび熱プレス成形品の製造方法 |
JP5807673B2 (ja) | 2011-03-30 | 2015-11-10 | 旭硝子株式会社 | ポリエーテルポリオールおよび軟質ポリウレタンフォームの製造方法、ならびにシート |
KR20130048057A (ko) | 2011-11-01 | 2013-05-09 | 현대자동차주식회사 | 고 안락성 자동차용 폴리 우레탄 시트 조성물 |
CN103627934B (zh) * | 2013-11-27 | 2016-04-13 | 余姚市吴兴铜业有限公司 | 一种汽车坐椅的制备方法 |
EP3156431A4 (en) * | 2014-06-12 | 2017-06-14 | Bridgestone Corporation | Soft polyurethane foam and pad for seat |
CN110328796B (zh) * | 2019-06-28 | 2020-12-01 | 武汉理工大学 | 一种聚合物基微发泡夹层梯度材料的制备方法 |
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Also Published As
Publication number | Publication date |
---|---|
US20080176970A1 (en) | 2008-07-24 |
JPWO2006126402A1 (ja) | 2008-12-25 |
US7759403B2 (en) | 2010-07-20 |
CN101180336A (zh) | 2008-05-14 |
EP1884528A1 (en) | 2008-02-06 |
EP1884528A4 (en) | 2012-07-25 |
TW200712085A (en) | 2007-04-01 |
CN101180336B (zh) | 2011-07-20 |
JP5145935B2 (ja) | 2013-02-20 |
KR20080017319A (ko) | 2008-02-26 |
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