WO2011013815A1 - Urethane foam for use in automobile seats and method for producing same - Google Patents
Urethane foam for use in automobile seats and method for producing same Download PDFInfo
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- WO2011013815A1 WO2011013815A1 PCT/JP2010/062930 JP2010062930W WO2011013815A1 WO 2011013815 A1 WO2011013815 A1 WO 2011013815A1 JP 2010062930 W JP2010062930 W JP 2010062930W WO 2011013815 A1 WO2011013815 A1 WO 2011013815A1
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- urethane foam
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- polyol
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Classifications
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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
- 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
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
- C08G18/4288—Polycondensates having carboxylic or carbonic ester groups in the main chain modified by higher fatty oils or their acids or by resin acids
-
- 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
- C08G2110/00—Foam properties
- C08G2110/0008—Foam properties flexible
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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
Definitions
- the present invention relates to a urethane foam for automobile seats using plant-derived fats and oils as a urethane foam raw material component. More specifically, the present invention not only improves the content of plant-derived components in the total weight of urethane foam for automobile seats, but also improves industrial productivity by greatly reducing the raw material viscosity, and The present invention relates to a urethane foam for automobile seats capable of stably supplying raw materials and a method for producing the same.
- Carbon dioxide is one of the greenhouse gases that contribute to global warming, and there is a need to reduce its emissions.
- urethane foam for automobile seats currently produced industrially is manufactured from petroleum-derived raw materials (Patent Document 1).
- Patent Document 1 petroleum-derived raw materials
- this urethane foam for automobile seats is incinerated after being subjected to a shredder process at the time of scrap car processing. Therefore, if the petroleum-derived raw material urethane foam as in Patent Document 1 is incinerated, carbon dioxide, which is a greenhouse gas that contributes to global warming, increases.
- Plant-derived raw materials are attracting attention as alternative raw materials for these petroleum-derived raw materials. Plant-derived materials are renewable resources that plants produce by taking in carbon dioxide in the atmosphere. Therefore, even if carbon dioxide is generated by incineration, the carbon dioxide balance on the global scale is zero because it is originally made from carbon dioxide by photosynthesis, and it is thought that global warming can be prevented. For this reason, there is a movement to use plant-derived materials instead of petroleum-derived materials.
- various methods have been studied as a method for producing a polyurethane foam material from plant-derived materials (Patent Documents 2, 3, and 4, Non-Patent Document 1).
- Patent Document 2 discloses a polyurethane foam using aerated soybean oil as a polyether material as a plant-derived raw material.
- Patent Documents 3 and 4 disclose a polyurethane prepolymer using an alcohol ring-opened product of epoxidized soybean oil as a polyether material.
- Non-patent Document 1 65% sulfuric acid and 30% hydrogen peroxide water are mixed and heated from raw soybean oil to purify the polyol by introducing a hydroxyl group into the double bond part of soybean oil.
- a method for producing urethane foam by mixing and stirring (PMDI), water, an amine catalyst, and a silicone foam stabilizer is disclosed.
- the polyurethane foams described in Patent Documents 2 to 4 are derived from plants and are expected to reduce carbon dioxide emissions by incineration.
- the polyurethane foam of Patent Document 2 has insufficient rebound resilience due to the low molecular weight of soybean oil and cannot be used as a cushion for an automobile seat.
- the polyurethane prepolymers of Patent Documents 3 and 4 are mainly used for forming moisture-curing one-component polyurethane foams, and are not used for urethane foams for automobile seats.
- the resilience modulus (JIS K6400) of the urethane foam of Non-Patent Document 1 is 1%, which is far from the target value of 40% or more for automobile use.
- the rebound resilience is the most important characteristic value of the urethane foam material for automobile seats. If the rebound resilience is low, the urethane foam needs to be thickened to eliminate the feeling of bottoming out when the urethane foam is used for the automobile seat. However, increasing the thickness of the foam is not preferable because it leads to narrowing the space of a limited automobile. In addition, if the foam is hardened to eliminate the feeling of bottoming, the sitting comfort is deteriorated. Furthermore, the permanent compression strain (50% compression of JIS K6400) of the urethane foam of Non-Patent Document 1 is 47%, which is far from the target value of 20% or less for automobile use.
- Patent Document 5 the present applicants were able to increase the plant-derived component content by using a urethane prepolymer obtained by crosslinking castor oil with an isocyanate in advance.
- the chemical bond generated by crosslinking is a urethane bond
- it is derived from a hydrogen bond between the bonds, and the viscosity of the prepolymer becomes very high.
- the plant-derived component content cannot be increased.
- due to the increase in viscosity it is difficult to increase the molecular weight of plant-derived components, and there has been a problem that the resilience of the seat for automobile seats is lowered.
- Patent Document 6 includes a description in a method for producing a polyurethane foam sealant, “as castor oil derivative polyol, for example, castor oil polyester; obtained from a mixed polycarboxylic acid of castor oil and other acids such as adipic acid. Although there is a description of “polyester”, it does not describe at all the rebound resilience that is most important for urethane foam use for automobile seats.
- the polyurethane foam of Patent Document 6 is used as a waterproof sealing material and is not used as a urethane foam material for automobile seats. Moreover, it is not described regarding the plant-derived component content.
- Patent Document 7 the present applicants succeeded in reducing the viscosity of the raw material while crosslinking the castor oil with an aldehyde compound to improve the plant-derived component content.
- the aldehyde compound used as a crosslinking agent is expensive, and the production method of the modified castor oil obtained by the crosslinking reaction and the crosslinking reaction has not yet been established, it cannot be industrially produced. .
- the present invention has been made in consideration of the above circumstances, and a urethane foam for automobile seats that can be industrially produced while increasing the rebound resilience while increasing the plant-derived component content and a method for producing the same.
- the purpose is to provide.
- the urethane foam for automobile seats according to the present invention (first invention) is obtained by reacting at least a polyol component and an isocyanate component, and the polyol component is obtained by crosslinking plant-derived fats and oils using a dibasic acid.
- the plant-derived component content is 14.7 to 45% and the rebound resilience is 43 to 70%.
- a method for producing urethane foam for automobile seats according to the present invention is a method for producing urethane foam for automobile seats comprising a flexible polyurethane foam obtained by reacting at least a polyol component and an isocyanate component,
- a polyol component modified plant-derived fats and oils obtained by crosslinking plant-derived fats and oils using dibasic acids and petroleum-derived polyols are used.
- a urethane foam for an automobile seat that exhibits a high plant-derived component content that has not been obtained in the prior art and has an improved rebound resilience, and a method for producing the same.
- a urethane foam for automobile seats and a method for producing the same can be provided.
- the urethane foam for automobile seats and the manufacturing method thereof according to the present invention will be described in more detail.
- the first invention it is preferable to use at least one of sebacic acid, azelaic acid, adipic acid, and dimer acid as the dibasic acid.
- castor oil it is preferable to use castor oil as the plant-derived oil.
- the petroleum-derived polyol preferably has a number average molecular weight of 5,000 to 10,000.
- the molecular weight of the petroleum-derived polyol is less than 5000, the rebound resilience of the produced urethane foam is lowered and the seating comfort is deteriorated, so that it is not suitable as a urethane foam for an automobile seat.
- the modified plant-derived oil or fat out of 100 parts by weight of the polyol component.
- the modified plant-derived fat / oil is less than 20 parts by weight, since the plant-derived component content is low, the environmental contribution is small.
- the modified plant-derived oil and fat exceeds 60 parts by weight, the resilience is reduced, and the comfort of the intended automobile seat is lowered.
- the plant-derived component content in the weight of urethane foam for automobile seats is high in the present invention, the amount of carbon dioxide emitted during incineration can be reduced, which can greatly contribute to the environment. .
- the plant-derived component content is 14.7 to 45%. If the plant-derived component content is too high, the comfort of the automobile seat is lost, and if it is too low, the contribution to the environment is low.
- a more preferable plant-derived component content is 20 to 40%. This makes it possible to provide a urethane foam for automobile seats that has a high contribution to the environment and is inferior to that of automobile foam urethane foams made from petroleum-based raw materials.
- urethane foam weight is the difference between the total weight of the raw material components constituting the urethane foam and the weight of gas loss released into the atmosphere.
- the raw material component include polyols, isocyanates, foaming agents, foam stabilizers, and catalysts described later.
- the gas loss weight is an amount of water used as a foaming agent that becomes carbon dioxide gas due to a chemical reaction with isocyanate and is released into the atmosphere.
- Carbon dioxide gas is released into the atmosphere by the reaction between isocyanate and water and does not remain in the urethane foam, so the loss is called “gas loss”.
- the weight of this gas loss (weight of CO 2 released) is defined as the following formula (1), assuming that all water in the raw material is released as carbon dioxide.
- Released CO 2 weight (CO 2 molecular weight ⁇ water molecular weight) ⁇ water weight (1)
- plant-derived component content rate (%) is defined like following Formula (2).
- Plant-derived component content (%) (plant-derived component weight / urethane foam weight) ⁇ 100 ... (2)
- the plant-derived component content (%) can be quantified using an analytical instrument such as FT-IR or GC-MS.
- plant-derived component content rate (%) can be calculated
- Plant-derived component content (%) ⁇ plant-derived component weight ⁇ (total of each raw material component weight ⁇ gas loss weight) ⁇ ⁇ 100 (3)
- crosslinking is a plant-derived dibasic acid, not only the weight of a plant-derived fat and oil but the weight of a dibasic acid is included in a plant-derived synthetic weight.
- the “polyol component” refers to a mixture of petroleum-derived polyols and modified plant-derived fats and oils.
- “polyol” is a generic term for compounds having two or more hydroxyl groups.
- Examples of petroleum-derived polyols include polyether polyols, polyester polyols, polyether ester polyols, and polymer polyols.
- a foaming agent, a catalyst, a foam stabilizer, and other additives may be mixed.
- it is not necessary to mix all these components and you may select 1 or more of the said foaming agents etc. according to a manufacturing method.
- the “plant-derived fat / oil” refers to an oil / fat obtained by mainly squeezing plant seeds or extracting them with a solvent, followed by purification, decolorization and deodorization.
- oils and fats include fats and oils containing hydroxy fatty acids such as castor oil and rescrela oil, and transesterification of these oils and fats by reactions such as oxidative polymerization and polyhydric alcohols (including compounds such as polyalkylene glycols).
- a hydroxy fatty acid-containing derivative obtained by a general known method such as, for example, may be used.
- castor oil and rescrela oil originally containing hydroxy fatty acid are preferable in that they do not require processing and can be used directly, and it is further preferable to use castor oil having the highest content of hydroxy fatty acid. More preferred.
- a hydrogenated product of castor oil or castor oil derivative such as hydrogenated castor oil can also be used.
- the “modified plant-derived fat / oil” is a mixture obtained by mixing a dibasic acid and a plant-derived fat / oil so as to have a desired property and subjecting it to a dehydration condensation reaction.
- a well-known method can be used for the synthesis
- dibasic acid is added after dissolving plant-derived fats and oils in arbitrary solvents. This reaction solution is refluxed by a Dean-Stark trap, and water generated by the reaction is removed out of the system while performing a dehydration condensation reaction. After the reaction is completed, the target compound can be obtained by removing the solvent under reduced pressure.
- Modified plant-derived fats and oils obtained by crosslinking plant-derived fats and oils using dibasic acids can be made to have a high molecular weight up to an arbitrary molecular weight depending on the charging ratio of each component. For this reason, the urethane foam for automobile seats which can prevent a decrease in the resilience elastic modulus and has a rebound resilience enough to be used for automobiles even though the plant-derived component content is high. Can be obtained.
- dibasic acid examples include aliphatic dibasic acids, alicyclic dibasic acids, aromatic dibasic acids, and mixtures thereof.
- aliphatic dibasic acid examples include oxalic acid, malonic acid, succinic acid, glutaric acid, adipic acid, pimelic acid, suberic acid, azelaic acid, sebacic acid, undecanedioic acid, dodecanedioic acid, brassic acid, tetradecanediic acid.
- Acid pentadecanedioic acid, tapsinic acid, heptadecanedioic acid, octadecanedioic acid, nonadecanedioic acid, eicosanedioic acid, docosanedioic acid, tetracosanedioic acid, hexacosanedioic acid, octacosanedioic acid, maleic acid, fumaric acid, citraconic acid, Itaconic acid, mesaconic acid, muconic acid, or mixtures thereof.
- alicyclic dibasic acid examples include cyclopentane dicarboxylic acid, cyclohexane dicarboxylic acid, decalin dicarboxylic acid, tetrahydrophthalic acid, highmic acid, and mixtures thereof.
- aromatic dibasic acid examples include terephthalic acid, isophthalic acid, phthalic acid, bibenzoic acid, tolylene dicarboxylic acid, xylose carboxylic acid, naphthalene dicarboxylic acid, biphenylene dicarboxylic acid, diphenylsulfone dicarboxylic acid, diphenyl ether dicarboxylic acid, di Phenoxyethane dicarboxylic acid, diphenyl ketone dicarboxylic acid, phenyl indane dicarboxylic acid, or mixtures thereof.
- a hydroxy dibasic acid having a hydroxyl group in the molecule can also be used.
- the hydroxy dibasic acid include tartronic acid, isomalic acid, hydroxymethylmalonic acid, dihydroxymalonic acid, malic acid, itamaric acid, citramalic acid, methylmalic acid, ethylmalic acid, dimethylmalic acid, trimethylmalic acid, and tartaric acid.
- 2,2-dihydroxysuccinic acid methyl tartaric acid, dimethyl tartaric acid, hydroxy glutaric acid, dihydroxy glutaric acid, trihydroxy glutaric acid, hydroxy adipic acid, dihydroxy adipic acid, hydroxy pimelic acid, dihydroxy pimelic acid, hydroxy suberic acid, Hydroxy azelaic acid, dihydroxy azelaic acid, hydroxy sebacic acid, dihydroxy sebacic acid, hydroxy dodecanedioic acid, dihydroxy dodecanedioic acid, hydroxybrassic acid, hydroxytetradecanedioic acid Dihydroxyhexadecanedioic acid, hydroxyoctadecanedioic acid, dihydroxyoctadecanedioic acid, furoic acid, hydroxyeicosanedioic acid, dihydroxyeicosanedioic acid, dihydroxyfumaric acid, dihydroxymaleic acid, hydroxycitraconic acid
- dibasic acids it is preferable to use at least one of sebacic acid, azelaic acid, adipic acid, and dimer acid.
- Sebacic acid, azelaic acid, and dimer acid are plant-derived dibasic acids
- adipic acid is petroleum-derived Dibasic acid.
- Dimer acid is a polymer containing dibasic acid as a main component, and refers to a polymerized fatty acid obtained by heating a fatty acid such as linoleic acid or oleic acid. Therefore, compounds of tribasic acid or higher such as trimer acid are usually included.
- the “isocyanate component” refers to an isocyanate compound alone or a mixture of isocyanate compounds used for urethane foam foaming. In addition, you may mix the component which does not react with an isocyanate compound previously. Specific examples of the isocyanate component include aliphatic diisocyanates, alicyclic diisocyanates, aromatic isocyanates, polyisocyanates, or mixtures thereof.
- the “isocyanate compound” refers to an aromatic polyisocyanate and an aliphatic polyisocyanate containing two or more isocyanate groups in the molecule, or modified products thereof. Specifically, aliphatic diisocyanates, aliphatic cyclic diisocyanates, aliphatic-aromatic diisocyanates, aromatic diisocyanates, aromatic triisocyanates, aromatic tetraisocyanates, polyisocyanates, or mixtures thereof Is mentioned.
- aliphatic diisocyanates examples include trimethylene diisocyanate, tetramethylene diisocyanate, pentamethylene diisocyanate, hexamethylene diisocyanate, 1,2-propylene diisocyanate, 1,2-butylene diisocyanate, 2,3-butylene diisocyanate, 1,3- Examples include butylene diisocyanate, ethylidene diisocyanate, and butylidene diisocyanate.
- aliphatic cyclic diisocyanates examples include 1,3-cyclopentane diisocyanate, 1,4-cyclohexane diisocyanate, 1,2-cyclohexane diisocyanate, isophorone diisocyanate, and norbornane diisocyanate.
- Examples of the aliphatic-aromatic diisocyanates include m-phenylene diisocyanate, p-phenylene diisocyanate, 4,4′-biphenyl diisocyanate, 1,5-naphthalene diisocyanate, 1,4-naphthalene diisocyanate, and 4,4′-diphenylmethane.
- Examples thereof include diisocyanate, 2,4- or 2,6-toluene diisocyanate, polydiphenylnitryl diisocyanate or a mixture thereof, 4,4′-toluidine diisocyanate, and 1,4-xylene diisocyanate.
- aromatic diisocyanates examples include dianisidine diisocyanate, 4,4'-diphenyl ether diisocyanate, and chlorodiphenyl diisocyanate.
- aromatic triisocyanates examples include triphenylmethane-4,4 ′, 4 ′′ -triisocyanate, 1,3,5-triisocyanatebenzene, and 2,4,6-triisocyanate toluene.
- Examples of the group tetraisocyanates include 4,4′-diphenyl-dimethylmethane-2,2 ′, 5,5′-tetraisocyanate, and examples of the polyisocyanates include toluene diisocyanate dimer and toluene diisocyanate trimer. Can be mentioned.
- the influence of the viscosity of the polyol component on production is very large.
- the viscosity of the polyol component must be 3000 cP or less. If the modified plant-derived oil has a viscosity exceeding 3000 cP, it must be mixed with another polyol and diluted to 3000 cP or less. This leads to a decrease in the content of plant-derived components in the urethane foam for automobile seats, and an increase in the amount of carbon dioxide that is released into the atmosphere.
- the modified plant-derived fat according to the present invention has a low viscosity of 3000 cP or less, any plant-derived component content can be selected according to the purpose. Moreover, there is no restriction
- the “urethane foam for automobile seats” is manufactured by a known manufacturing method such as a slab method, a one-shot method, a semi-premer method and a prepolymer method.
- the foaming agent for example, water, an organic foaming agent, an inorganic foaming agent, air, or carbon dioxide can be used.
- the organic foaming agent include acetone, dichloromethane, nitroalkane, nitrourea, aldoxime, active methylene compound, acid amide, tertiary alcohol, and oxalic acid hydrate.
- the inorganic foaming agent include boric acid, solid carbonic acid, and aluminum hydroxide.
- water is the most preferred blowing agent.
- examples of the catalyst for adjusting the reaction rate of the polyol and the isocyanate include catalysts usually used for the production of polyurethane, such as tertiary amines and reactive amines.
- tertiary amine for example, triethylamine, tripropylamine, tributylamine, N-methylmorpholine, N-ethylmorpholine, dimethylbenzylamine, N, N, N ′, N′-tetramethylhexamethylenediamine N, N, N ′, N ′, N ′′, N ′′ -pentamethyldiethylenetriamine, bis- (2-dimethylaminoethyl) ether, triethylenediamine, 1,8-diaza-bicyclo (5,4,0) undecene -7,1,2-dimethylimidazole, 1-butyl-2-methylimidazole.
- Examples of the reactive amine include dimethylethanolamine, N-trioxyethylene-N, N-dimethylamine, and N, N-dimethyl-N-hexanolamine.
- These organic acid salts carboxylic acid metal salts such as stannous octoate, dibutyltin dilaurate, potassium acetate, potassium 2-ethylhexanoate, organic metal compounds such as dibutyltin dilaurate, stannous octoate (in addition to aluminum, tin ) Etc. may be used.
- the addition amount of the catalyst is preferably 0.01 to 10 parts by weight, and more preferably 0.3 to 2 parts by weight.
- foam stabilizer examples include foam stabilizers usually used in the production of polyurethane, such as silicone foam stabilizers and fluorine foam stabilizers, and it is preferable to use silicone foam stabilizers.
- foam stabilizers usually used in the production of polyurethane such as silicone foam stabilizers and fluorine foam stabilizers
- silicone foam stabilizers it is preferable to use silicone foam stabilizers.
- an active hydrogen compound, a crosslinking agent, a light stabilizer, a plasticizer, an antioxidant, a heat stabilizer, a filler, an anti-coloring agent, a pigment, and other additives are added as necessary. be able to.
- the rebound elastic modulus of the obtained urethane foam was measured according to JIS K6400. The obtained results are shown in Table 1 below. Table 1 shows the blending ratio of the raw materials of urethane foams according to Examples 1, 2, 3, 4 and Comparative Examples 1, 2 and the number of parts by weight of isocyanate component, isocyanate (index), plant-derived component content and rebound resilience. .
- a polyol (trade name: Exenol 3040, manufactured by Asahi Glass Co., Ltd.) was used as the communicating agent.
- As the isocyanate component a mixture of toluene diisocyanate and polydiphenylmethyl diisocyanate (trade name: Cosmonate TM-20 manufactured by Mitsui Chemicals Polyurethane Co., Ltd.) was used.
- Table 2 shows the blending ratio of the raw materials of urethane foam according to Examples 5 to 10, the number of parts by weight of the isocyanate component, the isocyanate (index), the plant-derived component content, and the rebound resilience.
- the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage.
- the types of polyol components, catalysts, foam stabilizers and the like are not limited to those described above, and other polyol components, catalysts, foam stabilizers, and the like can be used, and their blending ratio is also limited to the above-described numerical values. It is not a thing.
- various inventions can be formed by appropriately combining a plurality of components disclosed in the embodiment. For example, you may delete all the components shown by embodiment.
- constituent elements over different embodiments may be appropriately combined.
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Abstract
Description
第1の発明において、前記二塩基酸としてセバシン酸,アゼライン酸,アジピン酸,ダイマー酸のうち少なくともいずれか一つを用いることが好ましい。また、前記植物由来油脂としてヒマシ油を用いることが好ましい。更に、前記石油由来ポリオールの数平均分子量が5000~10000であることが好ましい。ここで、石油由来ポリオールの分子量が5000未満の場合、製造されたウレタンフォームの反発弾性が低下して座り心地が悪化するため、自動車座席用ウレタンフォームとして適さない。また、分子量が10000を超える場合、ポリオールの粘度が高くなってしまい、自動車用クッションの製造に汎用的に用いられる高圧発泡機を用いた自動車座席用ウレタンフォームの製造に適さない。 Hereinafter, the urethane foam for automobile seats and the manufacturing method thereof according to the present invention will be described in more detail.
In the first invention, it is preferable to use at least one of sebacic acid, azelaic acid, adipic acid, and dimer acid as the dibasic acid. Moreover, it is preferable to use castor oil as the plant-derived oil. Further, the petroleum-derived polyol preferably has a number average molecular weight of 5,000 to 10,000. Here, when the molecular weight of the petroleum-derived polyol is less than 5000, the rebound resilience of the produced urethane foam is lowered and the seating comfort is deteriorated, so that it is not suitable as a urethane foam for an automobile seat. On the other hand, when the molecular weight exceeds 10,000, the viscosity of the polyol becomes high, which is not suitable for the production of urethane foam for automobile seats using a high-pressure foaming machine that is generally used for the production of automobile cushions.
放出されるCO2重量=(CO2分子量÷水分子量)×水重量 …(1)
ここで、植物由来成分含有率(%)は、次式(2)のように定義される。
植物由来成分含有率(%)=(植物由来成分重量÷ウレタンフォーム重量)×100
…(2)
前記植物由来成分含有率(%)は、FT-IRやGC-MS等の分析機器を用いて定量することができる。 Carbon dioxide gas is released into the atmosphere by the reaction between isocyanate and water and does not remain in the urethane foam, so the loss is called “gas loss”. The weight of this gas loss (weight of CO 2 released) is defined as the following formula (1), assuming that all water in the raw material is released as carbon dioxide.
Released CO 2 weight = (CO 2 molecular weight ÷ water molecular weight) × water weight (1)
Here, plant-derived component content rate (%) is defined like following Formula (2).
Plant-derived component content (%) = (plant-derived component weight / urethane foam weight) × 100
... (2)
The plant-derived component content (%) can be quantified using an analytical instrument such as FT-IR or GC-MS.
植物由来成分含有率(%)={植物由来成分重量÷(各原料成分重量の総和-ガスロス重量)}×100 …(3)
ここで、植物由来成重量は、架橋に用いる二塩基酸が植物由来二塩基酸であれば、植物由来油脂の重量だけでなく、二塩基酸の重量も含む。 In addition, plant-derived component content rate (%) can be calculated | required like following Formula (3), when mixing | blending prescription is known.
Plant-derived component content (%) = {plant-derived component weight ÷ (total of each raw material component weight−gas loss weight)} × 100 (3)
Here, if the dibasic acid used for bridge | crosslinking is a plant-derived dibasic acid, not only the weight of a plant-derived fat and oil but the weight of a dibasic acid is included in a plant-derived synthetic weight.
イソシアネート成分の具体的な例としては、例えば脂肪族ジイソシアネート類、脂環式ジイソシアネート類、芳香族イソシアネート類、ポリイソシアネート類、またはこれらの混合物が挙げられる。 In the present invention, the “isocyanate component” refers to an isocyanate compound alone or a mixture of isocyanate compounds used for urethane foam foaming. In addition, you may mix the component which does not react with an isocyanate compound previously.
Specific examples of the isocyanate component include aliphatic diisocyanates, alicyclic diisocyanates, aromatic isocyanates, polyisocyanates, or mixtures thereof.
実施例
[試料1:変性植物由来油脂の合成] (ヒマシ油/セバシン酸=2/1モル)
まず、攪拌機、還流冷却器、加熱装置、温度計などを装備したガラス製反応器に、ヒマシ油100重量部とセバシン酸10.9重量部を仕込み反応を開始する。次に、加熱攪拌しながら窒素気流下200~250℃で15~20時間反応させた。この間、エステル化反応により生成する水は系外に留去させ、水酸基価86mgKOH/gの変性植物由来油脂(試料1)を得た。 Hereinafter, specific examples and comparative examples of the present invention will be described, but the present invention is not limited to these examples. In the synthesis of Samples 1 to 3, as castor oil, trade name: refined castor oil LAV manufactured by Ito Oil Co., Ltd. was used.
Example
[Sample 1: Synthesis of modified plant-derived oil and fat] (castor oil / sebacic acid = 2/1 mol)
First, 100 parts by weight of castor oil and 10.9 parts by weight of sebacic acid are charged into a glass reactor equipped with a stirrer, a reflux condenser, a heating device, a thermometer, and the like to start the reaction. Next, the mixture was reacted at 200 to 250 ° C. for 15 to 20 hours under a nitrogen stream while heating and stirring. During this time, water produced by the esterification reaction was distilled out of the system to obtain a modified plant-derived oil and fat (sample 1) having a hydroxyl value of 86 mgKOH / g.
まず、攪拌機、還流冷却器、加熱装置、温度計などを装備したガラス製反応器に、ヒマシ油100重量部とアジピン酸7.8重量部を仕込み、試料1と同様な方法でエステル化反応させ、水酸基価90mgKOH/gの変性植物由来油脂(試料2)を得た。 [Sample 2: Synthesis of modified plant-derived oil and fat] (castor oil / adipic acid = 2/1 mol)
First, 100 parts by weight of castor oil and 7.8 parts by weight of adipic acid were charged into a glass reactor equipped with a stirrer, a reflux condenser, a heating device, a thermometer, etc., and subjected to an esterification reaction in the same manner as in Sample 1. A modified plant-derived oil (sample 2) having a hydroxyl value of 90 mgKOH / g was obtained.
まず、攪拌機、還流冷却器、加熱装置、温度計などを装備したガラス製反応器に、ヒマシ油100重量部とダイマー酸20.9重量部を仕込み、試料1と同様な方法でエステル化反応させ、水酸基価91mgKOH/gの変性植物由来油脂(試料3)を得た。 [Sample 3: Synthesis of modified plant-derived oil and fat] (castor oil / dimer acid = 2/1 mol)
First, 100 parts by weight of castor oil and 20.9 parts by weight of dimer acid were charged into a glass reactor equipped with a stirrer, a reflux condenser, a heating device, a thermometer, etc., and subjected to an esterification reaction in the same manner as in Sample 1. A modified plant-derived oil (sample 3) having a hydroxyl value of 91 mgKOH / g was obtained.
まず、ポリオール成分として変性植物由来油脂またはヒマシ油プレポリマーと、石油由来ポリオール、触媒、シリコーン系整泡剤、水、連通化剤を室温で攪拌混合した。次に、イソシアネート成分を加え、ホモミキサーで攪拌混合した後、上金型及び下金型からなる70×350×350mmの金型に注入した。つづいて、上金型を閉め、下金型温度60℃で6.5分間発泡させ、自動車座席用ウレタンフォームを得た。 [Create urethane foam for automobile seats]
First, a modified plant-derived oil or castor oil prepolymer as a polyol component, a petroleum-derived polyol, a catalyst, a silicone-based foam stabilizer, water, and a communicating agent were mixed with stirring at room temperature. Next, after adding an isocyanate component and stirring and mixing with a homomixer, the mixture was poured into a 70 × 350 × 350 mm mold composed of an upper mold and a lower mold. Subsequently, the upper mold was closed and foamed for 6.5 minutes at a lower mold temperature of 60 ° C. to obtain an automobile seat urethane foam.
Claims (6)
- 少なくともポリオール成分とイソシアネート成分とを反応させて得られ、前記ポリオール成分は、二塩基酸を用いて植物由来油脂を架橋して得られる変性植物由来油脂、及び石油由来ポリオールを含み、
植物由来成分含有率14.7~45%、且つ、反発弾性率43~70%であることを特徴とする自動車座席用ウレタンフォーム。 It is obtained by reacting at least a polyol component and an isocyanate component, and the polyol component includes a modified plant-derived oil and fat obtained by crosslinking a plant-derived oil and fat using a dibasic acid, and a petroleum-derived polyol,
A urethane foam for automobile seats, characterized in that it has a plant-derived component content of 14.7 to 45% and a rebound resilience of 43 to 70%. - 前記二塩基酸がセバシン酸,アゼライン酸,アジピン酸,ダイマー酸のうち少なくともいずれか一つであることを特徴とする請求項1記載の自動車座席用ウレタンフォーム。 The automobile seat urethane foam according to claim 1, wherein the dibasic acid is at least one of sebacic acid, azelaic acid, adipic acid and dimer acid.
- 前記植物由来油脂がヒマシ油であることを特徴とする請求項1記載の自動車座席用ウレタンフォーム。 2. The urethane foam for automobile seats according to claim 1, wherein the plant-derived fat is castor oil.
- 前記石油由来ポリオールの数平均分子量が5000~10000であることを特徴とする請求項1記載の自動車座席用ウレタンフォーム。 2. The urethane foam for automobile seats according to claim 1, wherein the petroleum-derived polyol has a number average molecular weight of 5,000 to 10,000.
- 少なくともポリオール成分とイソシアネート成分とを反応させて得られる軟質ポリウレタンフォームからなる自動車座席用ウレタンフォームの製造方法であって、前記ポリオール成分として、二塩基酸を用いて植物由来油脂を架橋して得られる変性植物由来油脂、及び石油由来ポリオールを用いることを特徴とする自動車座席用ウレタンフォームの製造方法。 A method for producing a urethane foam for automobile seats comprising a flexible polyurethane foam obtained by reacting at least a polyol component and an isocyanate component, which is obtained by crosslinking plant-derived fats and oils using a dibasic acid as the polyol component. The manufacturing method of the urethane foam for motor vehicle seats using modified plant origin fats and oils, and petroleum origin polyol.
- 前記ポリオール成分100重量部のうち、前記変性植物由来油脂を20~60重量部用いることを特徴とする請求項5記載の自動車座席用ウレタンフォームの製造方法。 6. The method for producing urethane foam for automobile seats according to claim 5, wherein 20 to 60 parts by weight of the modified plant-derived oil or fat is used out of 100 parts by weight of the polyol component.
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JP2012236910A (en) * | 2011-05-11 | 2012-12-06 | Inoac Corp | Polyurethane foam for flame lamination |
US9475972B2 (en) | 2012-12-21 | 2016-10-25 | Dow Global Technologies Llc | Adhesive useful for installing vehicle windows |
JP2023080376A (en) * | 2021-10-18 | 2023-06-08 | 株式会社イノアックコーポレーション | polyurethane foam |
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CN107298749A (en) * | 2017-05-25 | 2017-10-27 | 德清舒华泡沫座椅有限公司 | A kind of urethane foam for use in automobile seats material and preparation method thereof |
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