JP2017518998A - 低voc結合補助剤を生成するためのプロセス - Google Patents
低voc結合補助剤を生成するためのプロセス Download PDFInfo
- Publication number
- JP2017518998A JP2017518998A JP2016571752A JP2016571752A JP2017518998A JP 2017518998 A JP2017518998 A JP 2017518998A JP 2016571752 A JP2016571752 A JP 2016571752A JP 2016571752 A JP2016571752 A JP 2016571752A JP 2017518998 A JP2017518998 A JP 2017518998A
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- glycol ether
- reaction
- dpnb
- acid
- Prior art date
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- Granted
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- 238000000034 method Methods 0.000 title claims description 54
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims abstract description 36
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 claims abstract description 28
- -1 glycol ether ester Chemical class 0.000 claims abstract description 27
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims abstract description 18
- 239000000047 product Substances 0.000 claims description 55
- 239000000203 mixture Substances 0.000 claims description 53
- 150000003839 salts Chemical class 0.000 claims description 42
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 40
- 238000006243 chemical reaction Methods 0.000 claims description 39
- 239000000463 material Substances 0.000 claims description 32
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 30
- WNLRTRBMVRJNCN-UHFFFAOYSA-N hexanedioic acid Natural products OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 claims description 29
- 238000000605 extraction Methods 0.000 claims description 26
- 238000009835 boiling Methods 0.000 claims description 24
- 238000006386 neutralization reaction Methods 0.000 claims description 24
- 239000012074 organic phase Substances 0.000 claims description 20
- 239000007795 chemical reaction product Substances 0.000 claims description 17
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 16
- 239000001361 adipic acid Substances 0.000 claims description 16
- 235000011037 adipic acid Nutrition 0.000 claims description 16
- 239000008346 aqueous phase Substances 0.000 claims description 16
- 238000000926 separation method Methods 0.000 claims description 12
- WNLRTRBMVRJNCN-UHFFFAOYSA-L adipate(2-) Chemical compound [O-]C(=O)CCCCC([O-])=O WNLRTRBMVRJNCN-UHFFFAOYSA-L 0.000 claims description 11
- 150000008064 anhydrides Chemical class 0.000 claims description 11
- 238000004821 distillation Methods 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 claims description 10
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- 239000012467 final product Substances 0.000 claims description 9
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- 241001550224 Apha Species 0.000 claims description 7
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- 150000001735 carboxylic acids Chemical class 0.000 claims description 5
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- 238000004710 electron pair approximation Methods 0.000 claims description 4
- 239000011261 inert gas Substances 0.000 claims description 4
- WMDZKDKPYCNCDZ-UHFFFAOYSA-N 2-(2-butoxypropoxy)propan-1-ol Chemical group CCCCOC(C)COC(C)CO WMDZKDKPYCNCDZ-UHFFFAOYSA-N 0.000 claims description 3
- 238000004886 process control Methods 0.000 claims description 3
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 claims description 2
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
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- 238000005886 esterification reaction Methods 0.000 description 8
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- 238000002360 preparation method Methods 0.000 description 8
- 230000015572 biosynthetic process Effects 0.000 description 7
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- DAFHKNAQFPVRKR-UHFFFAOYSA-N (3-hydroxy-2,2,4-trimethylpentyl) 2-methylpropanoate Chemical compound CC(C)C(O)C(C)(C)COC(=O)C(C)C DAFHKNAQFPVRKR-UHFFFAOYSA-N 0.000 description 4
- 125000004209 (C1-C8) alkyl group Chemical group 0.000 description 4
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- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 description 4
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 4
- 239000007864 aqueous solution Substances 0.000 description 4
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- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 239000007858 starting material Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 4
- WWZKQHOCKIZLMA-UHFFFAOYSA-N Caprylic acid Natural products CCCCCCCC(O)=O WWZKQHOCKIZLMA-UHFFFAOYSA-N 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
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- 150000007513 acids Chemical class 0.000 description 3
- 238000010533 azeotropic distillation Methods 0.000 description 3
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 3
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 3
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 3
- 230000003472 neutralizing effect Effects 0.000 description 3
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 3
- 238000003786 synthesis reaction Methods 0.000 description 3
- LCVQGUBLIVKPAI-UHFFFAOYSA-N 2-(2-phenoxypropoxy)propan-1-ol Chemical compound OCC(C)OCC(C)OC1=CC=CC=C1 LCVQGUBLIVKPAI-UHFFFAOYSA-N 0.000 description 2
- 229910000619 316 stainless steel Inorganic materials 0.000 description 2
- JOOXCMJARBKPKM-UHFFFAOYSA-N 4-oxopentanoic acid Chemical compound CC(=O)CCC(O)=O JOOXCMJARBKPKM-UHFFFAOYSA-N 0.000 description 2
- 238000006641 Fischer synthesis reaction Methods 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- AFVFQIVMOAPDHO-UHFFFAOYSA-N Methanesulfonic acid Chemical compound CS(O)(=O)=O AFVFQIVMOAPDHO-UHFFFAOYSA-N 0.000 description 2
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 125000004432 carbon atom Chemical group C* 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 150000005690 diesters Chemical class 0.000 description 2
- 239000001530 fumaric acid Substances 0.000 description 2
- 239000003517 fume Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000001307 helium Substances 0.000 description 2
- 229910052734 helium Inorganic materials 0.000 description 2
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 2
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 2
- 229920001600 hydrophobic polymer Polymers 0.000 description 2
- 239000004816 latex Substances 0.000 description 2
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- BDJRBEYXGGNYIS-UHFFFAOYSA-N nonanedioic acid Chemical compound OC(=O)CCCCCCCC(O)=O BDJRBEYXGGNYIS-UHFFFAOYSA-N 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 2
- CXMXRPHRNRROMY-UHFFFAOYSA-N sebacic acid Chemical compound OC(=O)CCCCCCCCC(O)=O CXMXRPHRNRROMY-UHFFFAOYSA-N 0.000 description 2
- VXUYXOFXAQZZMF-UHFFFAOYSA-N titanium(IV) isopropoxide Chemical compound CC(C)O[Ti](OC(C)C)(OC(C)C)OC(C)C VXUYXOFXAQZZMF-UHFFFAOYSA-N 0.000 description 2
- JOXIMZWYDAKGHI-UHFFFAOYSA-N toluene-4-sulfonic acid Chemical compound CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 description 2
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- 125000004178 (C1-C4) alkyl group Chemical group 0.000 description 1
- ZQHJVIHCDHJVII-OWOJBTEDSA-N (e)-2-chlorobut-2-enedioic acid Chemical compound OC(=O)\C=C(\Cl)C(O)=O ZQHJVIHCDHJVII-OWOJBTEDSA-N 0.000 description 1
- LGMQQPPTZPRSHZ-BTJKTKAUSA-N (z)-but-2-enedioic acid;1-butoxybutane Chemical compound OC(=O)\C=C/C(O)=O.CCCCOCCCC LGMQQPPTZPRSHZ-BTJKTKAUSA-N 0.000 description 1
- XTFIVUDBNACUBN-UHFFFAOYSA-N 1,3,5-trinitro-1,3,5-triazinane Chemical compound [O-][N+](=O)N1CN([N+]([O-])=O)CN([N+]([O-])=O)C1 XTFIVUDBNACUBN-UHFFFAOYSA-N 0.000 description 1
- CUVLMZNMSPJDON-UHFFFAOYSA-N 1-(1-butoxypropan-2-yloxy)propan-2-ol Chemical compound CCCCOCC(C)OCC(C)O CUVLMZNMSPJDON-UHFFFAOYSA-N 0.000 description 1
- DURPTKYDGMDSBL-UHFFFAOYSA-N 1-butoxybutane Chemical compound CCCCOCCCC DURPTKYDGMDSBL-UHFFFAOYSA-N 0.000 description 1
- OISQOXQNNGHWTM-UHFFFAOYSA-N 1-butoxybutane;hexanedioic acid Chemical compound CCCCOCCCC.OC(=O)CCCCC(O)=O OISQOXQNNGHWTM-UHFFFAOYSA-N 0.000 description 1
- RTBFRGCFXZNCOE-UHFFFAOYSA-N 1-methylsulfonylpiperidin-4-one Chemical compound CS(=O)(=O)N1CCC(=O)CC1 RTBFRGCFXZNCOE-UHFFFAOYSA-N 0.000 description 1
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- 150000002689 maleic acids Chemical class 0.000 description 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 1
- HNEGQIOMVPPMNR-NSCUHMNNSA-N mesaconic acid Chemical compound OC(=O)C(/C)=C/C(O)=O HNEGQIOMVPPMNR-NSCUHMNNSA-N 0.000 description 1
- 229940098779 methanesulfonic acid Drugs 0.000 description 1
- LVHBHZANLOWSRM-UHFFFAOYSA-N methylenebutanedioic acid Natural products OC(=O)CC(=C)C(O)=O LVHBHZANLOWSRM-UHFFFAOYSA-N 0.000 description 1
- HNEGQIOMVPPMNR-UHFFFAOYSA-N methylfumaric acid Natural products OC(=O)C(C)=CC(O)=O HNEGQIOMVPPMNR-UHFFFAOYSA-N 0.000 description 1
- FUZZWVXGSFPDMH-UHFFFAOYSA-N n-hexanoic acid Natural products CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 235000019198 oils Nutrition 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 239000012044 organic layer Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000002540 palm oil Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 229920001515 polyalkylene glycol Polymers 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000000066 reactive distillation Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 239000001488 sodium phosphate Substances 0.000 description 1
- 229910000162 sodium phosphate Inorganic materials 0.000 description 1
- 239000002195 soluble material Substances 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000001384 succinic acid Substances 0.000 description 1
- 150000003512 tertiary amines Chemical class 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
- YNJBWRMUSHSURL-UHFFFAOYSA-N trichloroacetic acid Chemical compound OC(=O)C(Cl)(Cl)Cl YNJBWRMUSHSURL-UHFFFAOYSA-N 0.000 description 1
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 1
- 238000007738 vacuum evaporation Methods 0.000 description 1
- 229940005605 valeric acid Drugs 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C67/00—Preparation of carboxylic acid esters
- C07C67/08—Preparation of carboxylic acid esters by reacting carboxylic acids or symmetrical anhydrides with the hydroxy or O-metal group of organic compounds
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Abstract
Description
(1)触媒量のリン酸の存在下において、ジプロピレングリコールn−ブチルエーテル(DPnB)とアジピン酸とを反応させ、共沸蒸留によって副生成物である水を除去するステップ。反応ステップ中の色の発生を最小限に抑えるために、系の温度及び圧力条件は、反応混合物の温度が、その沸点よりも低くなるようなものである。
(2)反応生成物混合物を80℃以下に冷却するステップ。
(3)水酸化ナトリウム水溶液または別の好適な塩基を反応生成物混合物に添加して、塩を含む中和生成物の混合物を形成することによって、リン酸触媒を中和するステップ。
(4)中和するためにNaOHまたは別のナトリウム含有塩基を用いる場合には、水とイソプロパノールの混合物により中和反応混合物からリン酸ナトリウム等の塩を抽出し、それによって、塩、例えば有機副生成物の塩を除去するステップ。本発明の一実施形態において、用いられるイソプロパノールの量は、反応の終了時点の反応物質の質量に基づいて、約1%である。
(5)ステップ(3)及び/または(4)で形成された有機相と水相とを分離し、有機相を回収するステップ。
(6)有機相を精製するステップ。これは、残留水分、DPnB、及びより生成物であるエステルよりも低沸、すなわち、沸点の低い有機物を、加熱、不活性ガス、例えば窒素での揮散により、除去することを伴う。最大の揮散温度は、好ましくは、発色体の形成を最小化するために、170℃未満である。
(7)場合によっては、所望される生成物から残留固体を濾過するステップ。
a)反応生成物混合物をNaOH、及び場合によっては抽出補助剤、好ましくはイソプロパノールと接触させて、有機相及び水相を含む中和生成物混合物を得ることであって、中和生成物混合物は、DPnBアジピン酸エステル生成物と少なくとも1つの塩とを含み、接触は、少なくとも1つの塩を水相中に抽出するのに十分な条件下で行われること、
(b)有機相及び水相を分離し、次いで、有機相を回収すること、
(c)残留水分、DPnB、及び生成物であるDPnBアジピン酸エステルよりも低沸、すなわち、沸点の低い有機物を、加熱、場合によっては不活性ガス揮散により除去することによって、有機相を精製すること、
(d)場合によっては、生成物から残留固体を濾過することをさらに含む。
以下の実施例は、本発明を図示するために提供されており、その範囲を制限すると見なされるものではない。全ての圧力は、別途示されない限り、ゲージ圧ではなく絶対圧である。
Claims (15)
- グリコールエーテルエステルを調製するためのプロセスであって、反応域において、モノ−またはジ−カルボン酸及び/または酸無水物を、グリコールエーテルエステル生成物及び水を含む反応生成物混合物を生成するのに十分な反応条件下において、触媒量のリン酸の存在下でグリコールエーテルと接触させることを含み、前記水は、前記反応域において少なくとも部分的に蒸発し、分離域に送られて、そこで前記水が前記プロセスから実質的に除去され、前記プロセスは、グリコールエーテルが共沸混合物の成分として以外には本質的に前記分離域から出ないような温度及び圧力条件下において行われる、プロセス。
- 前記分離域の最大温度は、前記純粋なグリコールエーテルの沸点よりも低い、請求項1に記載のプロセス。
- 前記分離域の頂部の温度は、少なくとも前記共沸混合物の沸点である、請求項1または2のいずれかに記載のプロセス。
- 前記共沸混合物は、水及び前記グリコールエーテルによって形成される、請求項1〜3のいずれかに記載のプロセス。
- 中和/抽出ステップをさらに含み、前記反応生成物混合物をアルカリ性材料と接触させて、有機相及び水相を含む中和生成物混合物を得、前記中和生成物混合物は、グリコールエーテルエステル生成物と少なくとも1つの塩とを含み、前記接触が、少なくとも1つの塩を前記水相中に抽出するのに十分な条件下で行われる、請求項1〜4のいずれかに記載のプロセス。
- 相を分離させ、次いで前記中和生成物を回収することをさらに含む、請求項5に記載のプロセス。
- 前記中和生成物を大気中よりも低い圧力で加熱して、水及び低沸有機物を除去して精製された生成物を得ることをさらに含む、請求項6に記載のプロセス。
- 前記精製された生成物を濾過して、前記グリコールエーテルエステル生成物を含む最終生成物を得ることをさらに含む、請求項7に記載のプロセス。
- カルボン酸または無水物のカルボニル部分に対するグリコールエーテルのモル比は、反応の過程にわたり、1.05〜1.25である、請求項1〜8のいずれかに記載のプロセス。
- 前記精製された生成物及び/または最終生成物は、APHA色数が25未満である、請求項1〜9のいずれかに記載のプロセス。
- 前記精製された生成物及び/または最終生成物の前記VOC含量は、EPA Method 24によって判定したときに、1重量パーセント未満である、請求項1〜10のいずれかに記載のプロセス。
- 前記生成物は、2004/42/EC Solvents Directive for Decorative Paintsに定義されるように測定すると、760mmHgで250℃を上回る沸点を有する、請求項1〜11のいずれかに記載のプロセス。
- 前記グリコールエーテルは、DPnBを含み、前記エステルは、DPnBアジピン酸エステルを含む、請求項1〜12のいずれかに記載のプロセス。
- 前記分離域は、蒸留塔を備え、前記蒸留塔は、前記塔の頂部の温度を制御することを含むプロセス制御スキームを用いて操作される、請求項1〜13のいずれかに記載のプロセス。
- 前記グリコールエーテルはジプロピレングリコールn−ブチルエーテル(DPnB)であり、前記カルボン酸はアジピン酸であり、前記プロセスは、
(a)前記反応生成物混合物をNaOH、及び場合によっては抽出補助剤、好ましくはイソプロパノールと接触させて、有機相及び水相を含む中和生成物混合物を得ることであって、前記中和生成物混合物は、DPnBアジピン酸エステル生成物と少なくとも1つの塩とを含み、前記接触は、前記少なくとも1つの塩を前記水相中に抽出するのに十分な条件下で行われること、
(b)前記有機相及び前記水相を分離させ、次いで、前記有機相を回収すること、
(c)残留水分、DPnB、及び低沸、すなわち、前記生成物よりも低い沸点を有する有機物を、加熱、場合によっては不活性ガス揮散により除去することによって、前記有機相を精製すること、
(d)場合によっては、前記生成物から残留固体を濾過することをさらに含む、請求項1に記載のプロセス。
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