WO2018220983A1 - バイオポリエーテルポリオールの製造方法、バイオポリエーテルポリオール及びバイオポリウレタン樹脂 - Google Patents
バイオポリエーテルポリオールの製造方法、バイオポリエーテルポリオール及びバイオポリウレタン樹脂 Download PDFInfo
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- 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
- C08G18/4858—Polyethers containing oxyalkylene groups having more than four carbon atoms in the alkylene group
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- 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
- C08G18/08—Processes
- C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
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- 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
- C08G18/30—Low-molecular-weight compounds
- C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
- C08G18/3203—Polyhydroxy compounds
- C08G18/3206—Polyhydroxy compounds aliphatic
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- 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
- C08G18/4854—Polyethers containing oxyalkylene groups having four carbon atoms in the alkylene group
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- 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
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
- C08G18/6666—Compounds of group C08G18/48 or C08G18/52
- C08G18/667—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38
- C08G18/6674—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3203
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- 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
- C08G18/7657—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings
- C08G18/7664—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups
- C08G18/7671—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups containing only one alkylene bisphenyl group
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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
- C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
- C08G65/02—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
- C08G65/04—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers only
- C08G65/06—Cyclic ethers having no atoms other than carbon and hydrogen outside the ring
- C08G65/16—Cyclic ethers having four or more ring atoms
- C08G65/20—Tetrahydrofuran
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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
- C08G2190/00—Compositions for sealing or packing joints
Definitions
- the present invention relates to a biopolyether polyol obtained by copolymerization reaction of tetrahydrofuran and 2-methyltetrahydrofuran and a method for producing the same. Furthermore, the present invention relates to a biopolyurethane resin that is a reaction product with an organic polyisocyanate component using this polyether polyol.
- Polyether is often used as a soft segment component of polyurethane resin.
- polyurethane resins using polytetramethylene ether glycol which is a polymer of tetrahydrofuran, are particularly attracting attention for use in elastic fibers and CASE because they are excellent in terms of elastic properties, low-temperature properties, hydrolysis resistance, and the like.
- the polyurethane resin using polytetramethylene ether glycol has low temperature flexibility due to the crystallinity of the soft segment.
- a polyol in which a monomer having a side chain for example, 3-alkyltetrahydrofuran, neopentylglycol
- Patent Document 1 a monomer having a side chain
- the alkyl side chain of the polyol suppresses the crystallinity of the soft segment and provides good flexibility even in a low temperature range.
- biopolyols polytetramethylene ether glycol using biobutanediol or biotetrahydrofuran as a raw material has attracted attention as a plant-derived polyol having properties equivalent to those of petroleum.
- it has crystallinity as a soft segment, and it is not preferable to introduce a petroleum-derived monomer having a side chain (for example, 3-alkyltetrahydrofuran) in order to improve it because the bioconcentration is lowered.
- a petroleum-derived monomer having a side chain for example, 3-alkyltetrahydrofuran
- An object of the present invention is to provide a method for producing a biopolyether polyol from plant-derived raw materials, a biopolyether polyol, and a biopolyurethane resin having excellent elastic properties and low-temperature properties.
- the present invention provides the following biopolyether polyol production method, biopolyether polyol, and biopolyurethane resin using the same.
- the tetrahydrofuran and 2-methyltetrahydrofuran are 100% plant-derived monomers, and the monomer ratio (mass) is mixed in the range of 85/15 to 50/50 and maintained in the temperature range of 0 ° C to 50 ° C.
- a copolymerization reaction product having a monomer ratio (mass) of 100% plant-derived tetrahydrofuran and 2-methyltetrahydrofuran of 85/15 to 50/50, and having a number average molecular weight of 500 to 5,000. It is a 100% plant-derived polyether polyol.
- a polyether polyol, a polyisocyanate compound, and an isocyanate group of the polyisocyanate compound which are products of a copolymerization reaction in which the monomer ratio (mass) of tetrahydrofuran to 2-methyltetrahydrofuran is 85/15 to 50/50
- a biopolyurethane resin obtained by reacting an organic isocyanate compound with a chain extender using the polyether polyol of the present invention is a material excellent in elastic properties and low-temperature properties.
- FIG. 7 It is the evaluation result of the tensile strength and elongation of the polyurethane resin which concerns on Example 7, the comparative example 1, and the comparative example 2.
- FIG. It is an evaluation result of the storage elastic modulus (E ') of the polyurethane resin which concerns on Example 7, the comparative example 1, and the comparative example 2.
- FIG. It is the evaluation result of the tensile strength of the polyurethane resin which concerns on Example 8, the comparative example 3, and the comparative example 4, and elongation.
- biobutanediol when referred to as “biobutanediol”, “biotetrahydrofuran”, “biopolyol”, “biopolyether polyol”, etc., a plant-derived low molecule having physical properties equivalent to those of petroleum-based ones Or a high molecular compound.
- 100% plant-derived polyether polyol means that the entire main chain is derived from a plant-derived compound.
- biopolyurethane resin means that at least 50% by mass or more of the raw material is occupied by a component derived from a plant-derived compound.
- the method for producing a biopolyether polyol of the present invention is a method for producing a plant-derived polyether polyol obtained by a copolymerization reaction of tetrahydrofuran and 2-methyltetrahydrofuran.
- the monomer ratio (mass) of tetrahydrofuran to 2-methyltetrahydrofuran is 85/15 to 50/50.
- the monomer ratio (mass) of tetrahydrofuran / 2-methyltetrahydrofuran to obtain a preferred polyether polyol is 80/20 to 60/40.
- a weight ratio of 50/50 or less is not preferable because 2-methyltetrahydrofuran does not react sufficiently and yields a low yield.
- the weight ratio is 85/15 or more, the crystallinity increases, and the alkyl side chain of the polyol does not meet the purpose of improving the crystallinity of the soft segment.
- the tetrahydrofuran and 2-methyltetrahydrofuran are 100% plant-derived monomers, and the monomer ratio (mass) is mixed in a range of 85/15 to 50/50,
- the copolymerization reaction is performed by adding a strong acid catalyst while maintaining the temperature range of 0 ° C to 50 ° C.
- examples of the strong acid capable of ring opening of tetrahydrofuran include acetic anhydride, fluorosulfonic acid, fuming sulfuric acid and perchloric acid.
- the strong acid catalyst may be a single type of strong acid or a combination of two or more types of strong acids. When two or more kinds of strong acids are used, the temperature range of 0 ° C. to 50 ° C. may be divided into several stages and used.
- the 100% plant-derived polyether polyol of the present invention has a molecular weight of 500 to 5,000.
- the molecular weight is 500 or less, it becomes hard when it is made into a polyurethane resin, the rubber elastic modulus and the tensile strength are lowered, and when the molecular weight is 5000 or more, the elongation becomes too large and the properties as a resin are impaired.
- the biopolyurethane resin of the present invention comprises a polyether polyol, a polyisocyanate compound, and a product of a copolymerization reaction in which the monomer ratio (mass) of tetrahydrofuran to 2-methyltetrahydrofuran is 85/15 to 50/50, and A polyurethane resin that is a product of a synthetic reaction in which a chain extender that reacts with an isocyanate group is a main reactant, and the content of plant-derived components is 50% by mass to 80% by mass with respect to 100% by mass of the polyurethane resin. It is a biopolyurethane resin characterized by being.
- the polyisocyanate compound has two or more isocyanate groups in the molecule.
- TDI tolylene diisocyanate
- MDI diphenylmethane diisocyanate
- XDI xylylene diisocyanate
- IPDI isophorone diisocyanate
- HDI Hexamethylene diisocyanate
- NDI naphthalene diisocyanate
- hydrogenated diphenylmethane diisocyanate and the like, and these are used alone or in combination of two or more.
- the chain extender that reacts with the isocyanate group is a compound having two or more hydroxyl groups and amino groups, such as ethylene glycol, 1,3-propanediol, 1,4-butanediol, 1,5- Examples include pentanediol, 1,6-hexanediol, glycerin, trimethylolpropane, ethylenediamine, propylenediamine, phenylenediamine, and diaminodiphenylmethane.
- the polyether polyol which is a product of the copolymerization reaction in which the monomer ratio (mass) of tetrahydrofuran to 2-methyltetrahydrofuran is 85/15 to 50/50 is a 100% plant-derived polyether polyol.
- the number average molecular weight is 500 to 5,000.
- Such tetrahydrofuran can be obtained, for example, by obtaining furfural from corn cobs and waste wood, de-CO2 from it, and furaning it.
- 2-methyltetrahydrofuran is usually synthesized by catalytic hydrogenation of furfural.
- Furfural can be synthesized from polysaccharides using an acid catalyst.
- 2-methyltetrahydrofuran can be synthesized from biomass raw materials such as cellulose, hemicellulose, and lignin, which can be synthesized from an agricultural waste represented by corn core and sugar cane residue, and can be synthesized by an environmentally friendly process.
- biomass raw materials such as cellulose, hemicellulose, and lignin
- lignin which can be synthesized from an agricultural waste represented by corn core and sugar cane residue, and can be synthesized by an environmentally friendly process.
- the biopolyurethane resin obtained by the synthesis reaction has a polyol component of 50% by mass to 80%. That is, the content of the plant-derived component is 50% by mass to 80% by mass with respect to 100% by mass of the polyurethane resin. Generally, the higher the content of plant-derived components, the more environmentally friendly, but in order to achieve 80% by mass or more, the monomer ratio (mass) of tetrahydrofuran to 2-methyltetrahydrofuran is 85/15 to 50/50.
- the biopolyurethane resin of the present invention has excellent elastic properties and low-temperature properties, and the storage elastic modulus (E ′) can be maintained at room temperature even in a low temperature range of ⁇ 20 ° C. to 0 ° C. .
- the storage elastic modulus (E ′) at 0 ° C. is 0% to 15% higher than the storage elastic modulus (E ′) at normal temperature (20 ° C.). This is to have almost the same elastic characteristics as normal temperature even at low temperatures.
- the biopolyurethane resin of the present invention is an excellent elastic resin having the same elastic characteristics, low-temperature characteristics, hydrolysis resistance, and the like as a polyurethane resin obtained using a tetrahydrofuran / 3-alkyltetrahydrofuran polymer. .
- the method for producing the polyurethane resin of the present invention is not particularly limited, and can be produced by a known method or the like.
- a polyisocyanate compound may be charged and reacted together in a polyol or a chain extender, or after reacting a polyol and a polyisocyanate compound to obtain an isocyanate group-terminated prepolymer, a chain extender is added.
- the elongation reaction may be performed by adding.
- an organometallic catalyst or the like can be added as necessary.
- the organometallic catalyst is not particularly limited, but specifically, an organotin catalyst such as dibutyltin oxide, dibutyltin diacetate, dibutyltin dilaurate, dibutyltin dichloride, dioctyltin dilaurate, nickel octylate, Examples thereof include nickel naphthenate, cobalt octylate, cobalt naphthenate, bismuth octylate, and bismuth naphthenate.
- the tensile test was performed using a precision universal testing machine (manufactured by Shimadzu Corporation Autograph AG-1) in accordance with JIS K7312.
- the test piece was a No. 3 dumbbell, measured at a temperature of 23 degrees and a humidity of 50%. .
- Tensile strength, elongation at break, 100% modulus, and 300% modulus were determined.
- E ′ Evaluation method of storage elastic modulus (E ′)]
- E ′ is measured in a tensile mode using a dynamic viscoelasticity measuring device (DMA7100 manufactured by Hitachi High-Tech Science Co., Ltd.) under the conditions of a temperature range of ⁇ 100 to + 200 ° C., a heating rate of 2 ° C./min, and a frequency of 10 Hz. did.
- DMA7100 dynamic viscoelasticity measuring device
- Example 1 ⁇ Synthesis of polyol> A 1 L four-necked flask (with thermometer and stirrer) was charged with 300 parts of tetrahydrofuran and 100 parts of 2-methyltetrahydrofuran (weight ratio 75/25), and 10.0 parts of 70% perchloric acid was added while being kept at 0 ° C. Then, 84 parts of acetic anhydride was added over 30 minutes, and the polymerization reaction was further carried out at 5 ° C. for 8 hours. 390 parts of a 17% aqueous sodium hydroxide solution was added, stirred at room temperature for 30 minutes, allowed to stand overnight, and the lower aqueous layer was separated and removed.
- Example 2 ⁇ Synthesis of polyol> Into a 1L four-necked flask (with a thermometer and a stirrer) was charged 200 parts of tetrahydrofuran and 200 parts of 2-methyltetrahydrofuran (weight ratio 50/50), and 10.0 parts of 70% perchloric acid was added while being kept at 0 ° C. Then, 84 parts of acetic anhydride was added over 30 minutes, and the polymerization reaction was further carried out at 5 ° C. for 8 hours. Thereafter, the same operation as in Example 1 was performed to obtain a polyether polyol. The measurement results of yield and number average molecular weight (Mn) are shown in Table 1.
- Example 3 ⁇ Synthesis of polyol> A 1 L four-necked flask (with a thermometer and a stirrer) was charged with 340 parts of tetrahydrofuran and 60 parts of 2-methyltetrahydrofuran (weight ratio 85/15), and 10.2 parts of 70% perchloric acid was added while being kept at 0 ° C. Then, 86 parts of acetic anhydride was added over 30 minutes, and the polymerization reaction was further carried out at 5 ° C. for 8 hours. Thereafter, the same operation as in Example 1 was performed to obtain a polyether polyol. The measurement results of yield and number average molecular weight (Mn) are shown in Table 1.
- Example 4 ⁇ Synthesis of polyol> Into a 1 L four-necked flask (with a thermometer and a stirrer) was charged 300 parts of tetrahydrofuran and 100 parts of 2-methyltetrahydrofuran (weight ratio 75/25), and 2.4 parts of perchloric acid was added while being kept at 0 ° C., and then 91 parts of 25% fuming sulfuric acid was added over 5 hours, and the polymerization reaction was further carried out at 5 ° C. for 1 hour. 252 parts of water was added, stirred for 1 hour with reflux, left standing, and the lower aqueous layer was separated and removed.
- Example 5 ⁇ Synthesis of polyol> Into a 1 L four-necked flask (with a thermometer and a stirrer), 240 parts of tetrahydrofuran and 160 parts of 2-methyltetrahydrofuran (weight ratio 60/40) were added, and 5.6 parts of perchloric acid was added while being kept at 0 ° C., and then 137 parts of 25% fuming sulfuric acid was added over 5 hours, and a polymerization reaction was carried out at 5 ° C. for 1 hour. Thereafter, the same operation as in Example 4 was performed to obtain a polyether polyol. The measurement results of yield and number average molecular weight (Mn) are shown in Table 1.
- Example 6 ⁇ Synthesis of polyol> Into a 1 L four-necked flask (equipped with a thermometer and a stirrer) was charged 340 parts of tetrahydrofuran and 60 parts of 2-methyltetrahydrofuran (weight ratio 85/15), and 2.3 parts of perchloric acid was added while being kept at 5 ° C. 77 parts of 25% fuming sulfuric acid was added over 5 hours, and the polymerization reaction was further carried out at 5 ° C. for 1 hour. Thereafter, the same operation as in Example 4 was performed to obtain a polyether polyol. The measurement results of yield and number average molecular weight (Mn) are shown in Table 1.
- Table 1 summarizes the synthesis results of the polyether polyols of Examples 1 to 6.
- Example 7 ⁇ Synthesis of polyurethane resin> 80 parts of the polyol (Mn1962) obtained in Example 1 was placed in a 200 mL separable flask, vacuum-dried at 100 ° C. for 1 hour, added with 29.8 parts of MDI, and reacted at 80 ° C. for 3 hours to obtain a prepolymer. . Next, deaeration was performed for 1 hour, 6.5 parts of 1,4-butanediol was added, stirred for several minutes, poured into a preheated glass plate, formed into a sheet having a thickness of 2 mm, and heated in an oven at 110 ° C. for 18 hours. Time curing was performed to obtain a polyurethane resin sheet.
- Example 1 A polyurethane resin sheet was obtained in the same manner as in Example 7 using polytetramethylene ether glycol (PTG-2000SN Mn1968, manufactured by Hodogaya Chemical Co., Ltd.).
- Example 2 A polyurethane resin sheet was obtained in the same manner as in Example 7 using polyether polyol (PTG-L2000 Mn1902 manufactured by Hodogaya Chemical Co., Ltd.), which is a copolymer of tetrahydrofuran and 3-alkyltetrahydrofuran.
- PEG-L2000 Mn1902 manufactured by Hodogaya Chemical Co., Ltd.
- Example 8 ⁇ Synthesis of polyurethane resin> 100 g of the polyol (Mn1730) obtained in Example 4 was placed in a 200 mL separable flask, vacuum dried at 100 ° C. for 1 hour, 29.9 g of MDI was added, and the mixture was reacted at 80 ° C. for 3 hours to obtain a prepolymer. Next, deaeration was performed for 1 hour, 5.3 g of 1,4-butanediol was added, stirred for several minutes, poured onto a preheated glass plate, formed into a sheet having a thickness of 2 mm, and heated in an oven at 110 ° C. for 18 hours. Curing was performed to obtain a polyurethane resin sheet.
- PTG-L2000 Mn 1979, manufactured by Hodogaya Chemical Co., Ltd.
- the polyurethane resin of the present invention has little change in elasticity in the low temperature range with respect to normal temperature (20 ° C.), and is within 0% to 15%.
- the behavior was more flexible than the known copolymer of tetrahydrofuran and 3-alkyltetrahydrofuran. That is, the polyol of the present invention can provide a biopolyurethane resin having excellent elastic properties and low-temperature properties while being 100% plant raw material.
- the polyether polyol of the present invention can be a 100% plant-derived material.
- biopolyurethane resin produced using this polyether polyol exhibits good elastic properties and low-temperature characteristics without being inferior to conventional petroleum-derived products, especially as the hard segment ratio increases, Is also flexible and useful in various industrial fields.
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Abstract
Description
ポリオールの水酸基価をJIS K1557-1に準拠して測定し、Mnを算出した。
硬度はJIS K7312に準拠し、タイプAで測定した。
引張試験は、精密万能試験機(株式会社 島津製作所製 オートグラフAG-1)を使用し、JIS K7312に準拠し、試験片は3号ダンベルを使用し、温度23度、湿度50%で測定した。引張強度、破断伸び、100%モジュラス、300%モジュラスを求めた。
E’は、動的粘弾性測定装置(株式会社 日立ハイテクサイエンス製 DMA7100)を使用して、温度範囲-100~+200℃、昇温速度2℃/分、周波数10Hzの条件下、引張りモードで測定した。
1L四つ口フラスコ(温度計、攪拌装置付き)にテトラヒドロフラン300部と2-メチルテトラヒドロフラン100部(重量比75/25)を仕込み、0℃保冷下で70%過塩素酸10.0部を添加、次いで無水酢酸84部を30分かけて添加、さらに5℃にて8時間重合反応を行った。17%水酸化ナトリウム水溶液390部を添加、室温で30分攪拌、一晩静置、下層の水層を分液除去した。20%水酸化ナトリウム水溶液52部を添加、モノマー留去、さらに1-ブタノール200部を加えてリフラックスで3時間攪拌、静置、下層の水層を分液除去した。水200部を添加、リフラックスで30分攪拌、静置分液、次いで1mol/l塩酸200部を添加、リフラックスで30分攪拌、静置分液、以降、分液水層が中性になるまで上記の水洗浄を繰り返した。減圧蒸留により1-ブタノールを除去して、ポリエーテルポリオールを得た。収率及び数平均分子量(Mn)の測定結果は表1に示す。
1L四つ口フラスコ(温度計、攪拌装置付き)にテトラヒドロフラン200部と2-メチルテトラヒドロフラン200部(重量比50/50)を仕込み、0℃保冷下で70%過塩素酸10.0部を添加、次いで無水酢酸84部を30分かけて添加、さらに5℃にて8時間重合反応を行った。以降、実施例1と同様の操作を行い、ポリエーテルポリオールを得た。収率及び数平均分子量(Mn)の測定結果は表1に示す。
1L四つ口フラスコ(温度計、攪拌装置付き)にテトラヒドロフラン340部と2-メチルテトラヒドロフラン60部(重量比85/15)を仕込み、0℃保冷下で70%過塩素酸10.2部を添加、次いで無水酢酸86部を30分かけて添加、さらに5℃にて8時間重合反応を行った。以降、実施例1と同様の操作を行い、ポリエーテルポリオールを得た。収率及び数平均分子量(Mn)の測定結果は表1に示す。
1L四つ口フラスコ(温度計、攪拌装置付き)にテトラヒドロフラン300部と2-メチルテトラヒドロフラン100部(重量比75/25)を仕込み、0℃保冷下で過塩素酸2.4部を添加、次いで25%発煙硫酸91部を5時間かけて添加、さらに5℃にて1時間重合反応を行った。水252部添加、リフラックスで1時間攪拌、静置、下層の水層を分液除去、さらに水195部添加、リフラックスで1時間攪拌、静置、下層の水槽を分液除去した。弱塩基性イオン交換樹脂(オルガノ株式会社製 IRA-96SB)を添加し、室温で1時間攪拌、樹脂をろ別、減圧蒸留によりモノマーを除去し、ポリエーテルポリオールを得た。収率及び数平均分子量(Mn)の測定結果は表1に示す。
1L四つ口フラスコ(温度計、攪拌装置付き)にテトラヒドロフラン240部と2-メチルテトラヒドロフラン160部(重量比60/40)を仕込み、0℃保冷下で過塩素酸5.6部を添加、次いで25%発煙硫酸137部を5時間かけて添加、さらに5℃にて1時間重合反応を行った。以降、実施例4と同様の操作を行い、ポリエーテルポリオールを得た。収率及び数平均分子量(Mn)の測定結果は表1に示す。
1L四つ口フラスコ(温度計、攪拌装置付き)にテトラヒドロフラン340部と2-メチルテトラヒドロフラン60部(重量比85/15)を仕込み、5℃保冷下で過塩素酸2.3部を添加、次いで25%発煙硫酸77部を5時間かけて添加、さらに5℃にて1時間重合反応を行った。以降、実施例4と同様の操作を行い、ポリエーテルポリオールを得た。収率及び数平均分子量(Mn)の測定結果は表1に示す。
実施例1で得たポリオール(Mn1962)80部を200mLセパラブルフラスコにとり、100℃で1時間真空乾燥を行い、MDIを29.8部添加、80℃で3時間反応させてプレポリマーを得た。次いで1時間脱気を行い、1,4-ブタンジオールを6.5部添加、数分間攪拌後、予熱したガラス板に注ぎ、厚さ2mmのシート状に成形し、110℃のオーブン中で18時間キュアリングを行い、ポリウレタン樹脂シートを得た。
ポリテトラメチレンエーテルグリコール(保土谷化学工業株式会社製 PTG-2000SN Mn1968)を用いて、実施例7と同様の操作でポリウレタン樹脂シートを得た。
テトラヒドロフランと3-アルキルテトラヒドロフランの共重合体であるポリエーテルポリオール(保土谷化学工業株式会社製 PTG-L2000 Mn1902)を用いて、実施例7と同様の操作でポリウレタン樹脂シートを得た。
実施例4で得たポリオール(Mn1730)100gを200mLセパラブルフラスコにとり、100℃で1時間真空乾燥を行い、MDIを29.9g添加、80℃で3時間反応させてプレポリマーを得た。次いで1時間脱気を行い、1,4-ブタンジオールを5.3g添加、数分間攪拌後、予熱したガラス板に注ぎ、厚さ2mmのシート状に成形し、110℃のオーブン中で18時間キュアリングを行い、ポリウレタン樹脂シートを得た。
ポリテトラメチレンエーテルグリコール(保土谷化学工業株式会社製 PTG-2000SN Mn=1951)を用いて、実施例8と同様の操作でポリウレタン樹脂シートを得た。
テトラヒドロフランと3-アルキルテトラヒドロフランの共重合体であるポリエーテルポリオール(保土谷化学工業株式会社製 PTG-L2000 Mn=1979)を用いて、実施例8と同様の操作でポリウレタン樹脂シートを得た。
Claims (8)
- テトラヒドロフランと2-メチルテトラヒドロフランとの共重合反応で得られる植物由来のポリエーテルポリオールの製造方法であり、テトラヒドロフランと2-メチルテトラヒドロフランとのモノマー比(質量)は85/15ないし50/50であることを特徴とするバイオポリエーテルポリオールの製造方法。
- 前記共重合反応はテトラヒドロフランと2-メチルテトラヒドロフランの合計質量に対して、強酸触媒を15質量%~40質量%添加することを特徴とする請求項1に記載のバイオポリエーテルポリオールの製造方法。
- 前記テトラヒドロフランと2-メチルテトラヒドロフランは100%植物由来モノマーであり、モノマー比(質量)は85/15ないし50/50である範囲に混合し、0℃~50℃の温度範囲に維持しながら強酸触媒を投入することで前記共重合反応を行うことを特徴とする請求項1または請求項2に記載のバイオポリエーテルポリオールの製造方法。
- 前記強酸触媒は無水酢酸、過塩素酸、フルオロスルホン酸、あるいは発煙硫酸である特徴とする請求項1~請求項3のいずれか一項に記載のバイオポリエーテルポリオールの製造方法。
- 100%植物由来テトラヒドロフランと2-メチルテトラヒドロフランのモノマー比(質量)は85/15ないし50/50である共重合反応生成物であり、数平均分子量は500~5000であることを特徴とする100%植物由来ポリエーテルポリオール。
- テトラヒドロフランと2-メチルテトラヒドロフランとのモノマー比(質量)は85/15ないし50/50とする共重合反応の生成物であるポリエーテルポリオール、ポリイソシアネート化合物、及びポリイソシアネート化合物のイソシアネート基と反応する鎖延長剤を主要な反応物とする合成反応の生成物であるポリウレタン樹脂であり、前記ポリウレタン樹脂100質量%に対して植物由来成分の含有量が50質量%~80質量%であることを特徴とするバイオポリウレタン樹脂。
- 前記ポリエーテルポリオールは100%植物由来ポリエーテルポリオールであり、その数平均分子量は500~5000であることを特徴とする請求項6に記載のバイオポリウレタン樹脂。
- 前記請求項6または請求項7に記載のバイオポリウレタン樹脂において、常温(20℃)での貯蔵弾性率(E’)に対して、0℃の低温領域での貯蔵弾性率(E’)が0%~15%の増大であることを特徴とするバイオポリウレタン樹脂。
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WO2023145554A1 (ja) * | 2022-01-28 | 2023-08-03 | 保土谷化学工業株式会社 | テトラヒドロフランと植物由来2-メチルテトラヒドロフランとの共重合反応物、およびその製造方法 |
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