WO2011161029A1 - Heterogen katalysierte carbamatspaltung zur synthese von isocyanaten an festen lewis-säuren - Google Patents
Heterogen katalysierte carbamatspaltung zur synthese von isocyanaten an festen lewis-säuren Download PDFInfo
- Publication number
- WO2011161029A1 WO2011161029A1 PCT/EP2011/060176 EP2011060176W WO2011161029A1 WO 2011161029 A1 WO2011161029 A1 WO 2011161029A1 EP 2011060176 W EP2011060176 W EP 2011060176W WO 2011161029 A1 WO2011161029 A1 WO 2011161029A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cleavage
- zeolite
- carbamate
- catalyst
- isocyanates
- Prior art date
Links
- 239000012948 isocyanate Substances 0.000 title claims abstract description 13
- 150000002513 isocyanates Chemical class 0.000 title claims abstract description 13
- 239000007787 solid Substances 0.000 title claims description 3
- 239000002841 Lewis acid Substances 0.000 title description 4
- 230000015572 biosynthetic process Effects 0.000 title description 4
- 150000007517 lewis acids Chemical class 0.000 title description 4
- KXDHJXZQYSOELW-UHFFFAOYSA-M Carbamate Chemical compound NC([O-])=O KXDHJXZQYSOELW-UHFFFAOYSA-M 0.000 title description 2
- 238000003786 synthesis reaction Methods 0.000 title description 2
- 238000010494 dissociation reaction Methods 0.000 title 1
- 230000005593 dissociations Effects 0.000 title 1
- 239000003054 catalyst Substances 0.000 claims abstract description 17
- 150000004657 carbamic acid derivatives Chemical class 0.000 claims abstract description 13
- 238000003776 cleavage reaction Methods 0.000 claims description 35
- 230000007017 scission Effects 0.000 claims description 34
- 239000010457 zeolite Substances 0.000 claims description 18
- 238000006243 chemical reaction Methods 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 16
- 229910021536 Zeolite Inorganic materials 0.000 claims description 13
- 238000005878 carbamate elimination reaction Methods 0.000 claims description 13
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical group O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 13
- 230000002378 acidificating effect Effects 0.000 claims description 11
- 239000000919 ceramic Substances 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- 238000002360 preparation method Methods 0.000 claims description 8
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 7
- 229910052725 zinc Inorganic materials 0.000 claims description 7
- 239000011701 zinc Substances 0.000 claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- 239000011552 falling film Substances 0.000 claims description 4
- 239000011968 lewis acid catalyst Substances 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000000725 suspension Substances 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 229910052596 spinel Inorganic materials 0.000 claims 1
- 239000011029 spinel Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- RNLHGQLZWXBQNY-UHFFFAOYSA-N 3-(aminomethyl)-3,5,5-trimethylcyclohexan-1-amine Chemical compound CC1(C)CC(N)CC(C)(CN)C1 RNLHGQLZWXBQNY-UHFFFAOYSA-N 0.000 description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- 230000003197 catalytic effect Effects 0.000 description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 5
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 4
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 4
- -1 aliphatic alcohols Chemical class 0.000 description 4
- 150000001412 amines Chemical class 0.000 description 4
- NAQMVNRVTILPCV-UHFFFAOYSA-N hexane-1,6-diamine Chemical compound NCCCCCCN NAQMVNRVTILPCV-UHFFFAOYSA-N 0.000 description 4
- ZXEKIIBDNHEJCQ-UHFFFAOYSA-N isobutanol Chemical compound CC(C)CO ZXEKIIBDNHEJCQ-UHFFFAOYSA-N 0.000 description 4
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 description 4
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 3
- 150000001298 alcohols Chemical class 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 239000002638 heterogeneous catalyst Substances 0.000 description 3
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 3
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 description 3
- 150000003673 urethanes Chemical class 0.000 description 3
- ARXJGSRGQADJSQ-UHFFFAOYSA-N 1-methoxypropan-2-ol Chemical compound COCC(C)O ARXJGSRGQADJSQ-UHFFFAOYSA-N 0.000 description 2
- RLYCRLGLCUXUPO-UHFFFAOYSA-N 2,6-diaminotoluene Chemical compound CC1=C(N)C=CC=C1N RLYCRLGLCUXUPO-UHFFFAOYSA-N 0.000 description 2
- XNWFRZJHXBZDAG-UHFFFAOYSA-N 2-METHOXYETHANOL Chemical compound COCCO XNWFRZJHXBZDAG-UHFFFAOYSA-N 0.000 description 2
- FZZMTSNZRBFGGU-UHFFFAOYSA-N 2-chloro-7-fluoroquinazolin-4-amine Chemical compound FC1=CC=C2C(N)=NC(Cl)=NC2=C1 FZZMTSNZRBFGGU-UHFFFAOYSA-N 0.000 description 2
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 description 2
- YBRVSVVVWCFQMG-UHFFFAOYSA-N 4,4'-diaminodiphenylmethane Chemical compound C1=CC(N)=CC=C1CC1=CC=C(N)C=C1 YBRVSVVVWCFQMG-UHFFFAOYSA-N 0.000 description 2
- CNPURSDMOWDNOQ-UHFFFAOYSA-N 4-methoxy-7h-pyrrolo[2,3-d]pyrimidin-2-amine Chemical compound COC1=NC(N)=NC2=C1C=CN2 CNPURSDMOWDNOQ-UHFFFAOYSA-N 0.000 description 2
- 239000005058 Isophorone diisocyanate Substances 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 239000007795 chemical reaction product Substances 0.000 description 2
- NIMLQBUJDJZYEJ-UHFFFAOYSA-N isophorone diisocyanate Chemical compound CC1(C)CC(N=C=O)CC(C)(CN=C=O)C1 NIMLQBUJDJZYEJ-UHFFFAOYSA-N 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 235000005074 zinc chloride Nutrition 0.000 description 2
- 239000011592 zinc chloride Substances 0.000 description 2
- CBCKQZAAMUWICA-UHFFFAOYSA-N 1,4-phenylenediamine Chemical compound NC1=CC=C(N)C=C1 CBCKQZAAMUWICA-UHFFFAOYSA-N 0.000 description 1
- SBJCUZQNHOLYMD-UHFFFAOYSA-N 1,5-Naphthalene diisocyanate Chemical compound C1=CC=C2C(N=C=O)=CC=CC2=C1N=C=O SBJCUZQNHOLYMD-UHFFFAOYSA-N 0.000 description 1
- 229940008841 1,6-hexamethylene diisocyanate Drugs 0.000 description 1
- YFOOEYJGMMJJLS-UHFFFAOYSA-N 1,8-diaminonaphthalene Chemical compound C1=CC(N)=C2C(N)=CC=CC2=C1 YFOOEYJGMMJJLS-UHFFFAOYSA-N 0.000 description 1
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 description 1
- ZNQVEEAIQZEUHB-UHFFFAOYSA-N 2-ethoxyethanol Chemical compound CCOCCO ZNQVEEAIQZEUHB-UHFFFAOYSA-N 0.000 description 1
- 229940093475 2-ethoxyethanol Drugs 0.000 description 1
- YTTFFPATQICAQN-UHFFFAOYSA-N 2-methoxypropan-1-ol Chemical compound COC(C)CO YTTFFPATQICAQN-UHFFFAOYSA-N 0.000 description 1
- YEYKMVJDLWJFOA-UHFFFAOYSA-N 2-propoxyethanol Chemical compound CCCOCCO YEYKMVJDLWJFOA-UHFFFAOYSA-N 0.000 description 1
- 239000005057 Hexamethylene diisocyanate Substances 0.000 description 1
- 229920000265 Polyparaphenylene Polymers 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical group [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- HFACYLZERDEVSX-UHFFFAOYSA-N benzidine Chemical group C1=CC(N)=CC=C1C1=CC=C(N)C=C1 HFACYLZERDEVSX-UHFFFAOYSA-N 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 229940112021 centrally acting muscle relaxants carbamic acid ester Drugs 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 150000004985 diamines Chemical class 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 description 1
- 238000004128 high performance liquid chromatography Methods 0.000 description 1
- 239000000543 intermediate Substances 0.000 description 1
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004811 liquid chromatography Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- KQSABULTKYLFEV-UHFFFAOYSA-N naphthalene-1,5-diamine Chemical compound C1=CC=C2C(N)=CC=CC2=C1N KQSABULTKYLFEV-UHFFFAOYSA-N 0.000 description 1
- 229920000768 polyamine Polymers 0.000 description 1
- 229920001228 polyisocyanate Polymers 0.000 description 1
- 239000005056 polyisocyanate Substances 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 238000003746 solid phase reaction Methods 0.000 description 1
- 238000010671 solid-state reaction Methods 0.000 description 1
- 229910052566 spinel group Inorganic materials 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- YXFVVABEGXRONW-UHFFFAOYSA-N toluene Substances CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 1
- RUELTTOHQODFPA-UHFFFAOYSA-N toluene 2,6-diisocyanate Chemical compound CC1=C(N=C=O)C=CC=C1N=C=O RUELTTOHQODFPA-UHFFFAOYSA-N 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C263/00—Preparation of derivatives of isocyanic acid
- C07C263/04—Preparation of derivatives of isocyanic acid from or via carbamates or carbamoyl halides
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C265/00—Derivatives of isocyanic acid
- C07C265/14—Derivatives of isocyanic acid containing at least two isocyanate groups bound to the same carbon skeleton
Definitions
- the invention relates to a process for the preparation of isocyanates by cleavage of the corresponding carbamates.
- the carbamate cleavage is becoming increasingly important as a phosgene-free process for the preparation of isocyanates.
- Various apparatuses have been proposed for carrying out the carbamate cleavage industrially, in particular columns (in EP 0 795 543), fluidized bed reactors (in EP 555 628 and in DE 199 07 648), falling film or thin film evaporators (in EP 0 092 738).
- the carbamate cleavage can be operated in the liquid or gas phase.
- a problem in the thermal cleavage of carbamates is the formation of high molecular weight secondary components, which are formed by further reaction of the cleavage products with itself or with starting materials. These can form deposits in the equipment, thus restricting continuous operation and resulting in yield losses.
- the residues contain in particular allophanates and isocyanurates.
- the by-products are also formed by the reaction of hemi-urethanes (semicarbamates, ie a difunctional compound containing urethane and an isocyanate function, intermediates of cleavage of bisurethanes) with themselves. They are also formed by the reaction of the desired end product with the feedstock.
- the object is achieved by a process for the preparation of isocyanates by cleavage of the corresponding carbamates, which is characterized in that the cleavage of the carbamates is carried out in the presence of a heterogeneous Lewis acidic catalyst.
- Lewis acidic heterogeneous catalysts increase the rate of carbamate cleavage by up to 80-fold over pure thermal cleavage, with high selectivity, above 90%, of cleavage to the corresponding isocyanates. It has surprisingly been found that these high rate increases and selectivities are achieved only with catalysts that are Lewis acid, but not with Brönsted acids, which lead to undesirable side reactions in the cleavage.
- carbamates also called carbamic acid esters or urethanes
- urethanes preferably biscarbamates and polycarbamates
- amines preferably diioder polyamines, preferably diamines, with urea and at least one alcohol.
- Suitable alcohols for the preparation of the carbamates are in principle all aliphatic alcohols. Preferably, those are selected whose boiling points differ sufficiently from the boiling point of the isocyanates to ensure optimum separation. Particularly preferred for the preparation of the carbamate aliphatic monohydroxy alcohols having 1 to 4 carbon atoms per molecule, i. Methanol, ethanol, propanol, isopropanol, n-butanol and / or isobutanol used. Also preferred are alcohols having at least one oxygen heteroatom, in particular 2-methoxyethanol, 2-ethoxyethanol, 2-propoxyethanol, 2-butoxyethanol, 2-methoxy-1-propanol and / or 1-methoxy-2-propanol.
- the amines used are preferably 2,4- and / or 2,6-toluenediamine (TDA), 2,2 ', 2,4'- and / or 4,4'-diaminodiphenylmethane (MDA) and / or higher homologs (poly).
- TDA 2,4- and / or 2,6-toluenediamine
- MDA 4,4'-diaminodiphenylmethane
- poly homologs
- phenylenepolymethylenepolyamine pMDA
- 1,6-hexamethylenediamine HDA
- 1-amino-3,3,5-trimethyl-5-aminomethylcyclohexane hereinafter also referred to as isophoronediamine, IPDA
- 1, 5 and / or 1, 8 Diaminonaphthalene, 4,4'-diaminodiphenyl, 1, 3 and / or 1, 4-diaminobenzene, 2,4- and / or 2,6-hexahydrotoluylenediamine and / or 4,4'-, 2,4'- and or 2,2'-dicyclohexylmethanediamine used.
- the structures of the amines used determine the structures of the isocyanates obtainable after the thermal cleavage.
- the urethanes used are based on 2,4- and / or 2,6-toluenediamine (TDA), 2,2'-, 2,4'- and / or 4,4'-diaminodiphenylmethane (MDA) and / or higher homologues (polyphenylenepolymethylenepolyamines, pMDA), 1,6-hexamethylenediamine (HDA), isophoronediamine (IPDA) and / or 1,5-diaminonaphthalene as the amine component and methanol, n-propanol, isopropanol, n-butanol, or in particular isobutanol or 2-methoxyethanol as alcohol.
- TDA 2,4- and / or 2,6-toluenediamine
- MDA 2,2'-, 2,4'- and / or 4,4'-di
- diurethanes or polyurethanes are used for cleavage: 2,4- and / or 2,6-toluylenediisobutylurethane, 2,4- and / or 2,6-toluene.
- isocyanates are particularly preferably prepared by thermal cleavage of the corresponding diurethanes: 2,4- and / or 2,6-toluene diisocyanate (TDI), 2,2'-, 2,4'- and / or 4,4'-diphenylmethane diisocyanate (MDI, polyphenylene, polymethylene, polyisocyanates, p-MDl), 1,6-hexamethylene diisocyanate (HDI), 1-amino-3,3,5-trimethyl-5-aminomethylcyclohexane (isophorone diisocyanate, IPDI) and / or 1, 5 Diisocyanato naphthalene (NDI).
- TDI 2,4- and / or 2,6-toluene diisocyanate
- MDI polyphenylene, polymethylene, polyisocyanates, p-MDl
- HDI 1,6-hexamethylene diisocyanate
- IPDI isophorone di
- the heterogeneous Lewis acidic catalyst used according to the invention is preferably a supported catalyst comprising a ceramic support to which a metal is applied.
- Zeolites, spinels and perovskites, in particular zeolites have proven useful as ceramic supports for the use according to the invention.
- Particularly suitable are zeolites, in particular Na-Y zeolites.
- metal which is applied to the carrier, are particularly suitable zinc, aluminum and iron.
- zinc is applied to the ceramic carrier as the metal.
- the heterogeneous Lewis acidic catalyst may preferably be prepared by solid-state reaction of ZnCl 2 and Na-Y zeolite by heat treatment or under microwave irradiation. Such methods are described, for example, in Journal of Molecular Catalysis A: Chemical 209 (2004) pages 171 to 177.
- the Lewis acidic heterogeneous catalyst can be used in a preferred embodiment as a suspension catalyst.
- the Lewis acid heterogeneous catalyst is used as a coating on the inner wall of a reactor in which the carbamate cleavage is carried out.
- the reactor in which the carbamate cleavage is carried out and whose inner wall is coated with the Lewis acid catalyst is preferably a falling film evaporator.
- the growth of zeolite-based catalysts on different materials, in particular glass or metal is known from the literature.
- Carrying out the carbamate cleavage in the falling-film evaporator has the further advantage over carbamate cleavage in the presence of a suspension catalyst that the reaction products of cleavage, ie alcohol and isocyanate, can be taken at different points in the reactor so that the formation of undesirable by-products is prevented by further reaction thereof can.
- TDU 2,4-di-n-propyl toluenedimethyl urethane
- TDI corresponding tolylene diisocyanate
- the catalyst was tested in a system designed for thermal cleavage of carbamates, comprising a 250 ml four-necked flask, a 600 mm glass column filled with 5 x 5 mm glass rings, with heating and stirrer. As a reference, the results of the thermal cleavage served. The analysis of the test results was carried out by liquid chromatography (HPLC).
- the reaction courses that is, the weight loss of the carbamate used in percent over time in minutes
- curve I the course of the reaction for the thermal cleavage
- curve II the course of the reaction for the cleavage in the presence of 1 mol% of heterogeneous Lewis acidic catalyst
- curve III represents the course of the reaction in the presence of 10 mol% of the heterogeneous Lewis acidic catalyst.
- the figures show that in the presence
- the rate constants of the carbamate cleavage of the embodiments are shown. The rate constants show an increase up to 80 times for the catalytic cleavage compared to the thermal cleavage.
- Figure 1 is a graphical representation of the reaction courses of the thermal cleavage compared to the novel catalytic cleavage in the presence of a heterogeneous Lewis acidic zeolites and
- FIG. 2 shows the graphic representation of the reaction constants for the same cleavage reactions as in FIG. 1.
- FIG. 1 shows on the ordinate the decrease in the concentration of the educt TDU in percent by weight over time, t [min], on the abscissa.
- the upper curve I shows the course of the reaction for the thermal cleavage for comparison
- curve II the course of the reaction for the catalytic cleavage in the presence of 1 mol% with zinc-treated Na-Y zeolite
- the lower curve III the course of the reaction for the catalytic cleavage in the presence of 10 mol% Na-Y zeolite.
- Curves II and III illustrating the examples according to the invention show a marked increase in the reaction rate over the comparative example, curve I, for purely thermal cleavage.
- the representation in FIG. 2 shows the rate constants In (c 0 / c) on the ordinate with respect to time, tt 0 [min] on the abscissa, for the thermal cleavage, for comparison (curve I), for the inventive catalytic cleavage in the presence of 1 mol% zinc-treated Na-Y zeolite (curve II) or for the inventive catalytic cleavage in the presence of 10 mol% zinc-treated Na-Y zeolite (curve III).
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP11725938.2A EP2585433A1 (de) | 2010-06-22 | 2011-06-20 | Heterogen katalysierte carbamatspaltung zur synthese von isocyanaten an festen lewis-säuren |
KR1020137001562A KR20130089233A (ko) | 2010-06-22 | 2011-06-20 | 고체 루이스 산 위의 이소시아네이트의 합성을 위한 불균일하게 촉매화된 카바메이트 해리 |
JP2013515826A JP2013540101A (ja) | 2010-06-22 | 2011-06-20 | イソシアネートの合成のための固体ルイス酸上での不均一系触媒によるカルバメートの解離 |
CN2011800304321A CN102947267A (zh) | 2010-06-22 | 2011-06-20 | 在固体路易斯酸上非均相催化氨基甲酸酯离解以合成异氰酸酯 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP10166781 | 2010-06-22 | ||
EP10166781.4 | 2010-06-22 |
Publications (1)
Publication Number | Publication Date |
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WO2011161029A1 true WO2011161029A1 (de) | 2011-12-29 |
Family
ID=44561241
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2011/060176 WO2011161029A1 (de) | 2010-06-22 | 2011-06-20 | Heterogen katalysierte carbamatspaltung zur synthese von isocyanaten an festen lewis-säuren |
Country Status (6)
Country | Link |
---|---|
US (1) | US20110313192A1 (de) |
EP (1) | EP2585433A1 (de) |
JP (1) | JP2013540101A (de) |
KR (1) | KR20130089233A (de) |
CN (1) | CN102947267A (de) |
WO (1) | WO2011161029A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8933262B2 (en) | 2011-05-24 | 2015-01-13 | Basf Se | Process for preparing polyisocyanates from biomass |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8759569B2 (en) | 2009-06-26 | 2014-06-24 | Basf Se | Process for the production of isocyanates, preferably diisocyanates and polyisocyanates with solvent recirculation |
CN102471071B (zh) | 2009-07-16 | 2015-01-28 | 巴斯夫欧洲公司 | 制备二苯基甲烷二异氰酸酯系列的浅色异氰酸酯的方法 |
US8859805B2 (en) | 2009-09-22 | 2014-10-14 | Basf Se | Process for preparing isocyanates |
BR112012009485A2 (pt) | 2009-10-21 | 2016-05-03 | Basf Se | processo para produzir uretanos |
BR112012009890A2 (pt) | 2009-10-27 | 2016-11-29 | Basf Se | processo para coproduzir di - e/ou poli-isocianatos e glicóis |
BR112012013061A2 (pt) | 2009-12-01 | 2016-11-22 | Basf Se | processo para preparar isocianatos. |
BR112012013069B1 (pt) | 2009-12-04 | 2018-05-22 | Basf Se | Processo para preparar isocianatos aromáticos. |
CN115569670A (zh) * | 2022-09-29 | 2023-01-06 | 四川元理材料科技有限公司 | 异佛尔酮二氨基甲酸正丁酯工业化热裂解工艺中的催化剂 |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3734941A (en) * | 1968-09-06 | 1973-05-22 | American Cyanamid Co | Process for converting urethanes to isocyanates |
US3919279A (en) * | 1974-06-26 | 1975-11-11 | Atlantic Richfield Co | Catalytic production of isocyanates from esters of carbamic acids |
DE2635490A1 (de) * | 1975-08-07 | 1977-02-24 | Mitsui Toatsu Chemicals | Verfahren zur herstellung von aromatischen isocyanaten |
EP0092738A1 (de) | 1982-04-27 | 1983-11-02 | Bayer Ag | Verfahren zur kontinuierlichen thermischen Spaltung von Carbamidsäureestern |
US5194660A (en) * | 1990-12-21 | 1993-03-16 | Union Carbide Chemicals & Plastics Technology Corporation | Processes for producing carbamates and isocyanates |
EP0555628A2 (de) | 1992-01-10 | 1993-08-18 | Nippon Shokubai Co., Ltd. | Verfahren zur Herstellung von Isocyanaten |
EP0795543A1 (de) | 1996-03-15 | 1997-09-17 | Bayer Ag | Verwendung von hochsiedenden Lösemitteln bzw. -gemischen als Wärmetauschmedium für die thermische Spaltung von Carbamidsäureestern |
DE19907648A1 (de) | 1999-02-23 | 2000-08-24 | Basf Ag | Verfahren zur Herstellung von Isocyanaten durch Spaltung von Urethanen |
US20060025626A1 (en) * | 2004-07-28 | 2006-02-02 | Degussa Ag | Multistage continuous preparation of cycloaliphatic diisocyanates |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2942543A1 (de) * | 1979-10-20 | 1981-05-07 | Basf Ag, 6700 Ludwigshafen | Verfahren zur herstellung von arylisocyanaten durch thermische spaltung von arylurethanen |
JPS57158747A (en) * | 1981-03-26 | 1982-09-30 | Asahi Chem Ind Co Ltd | Preparation of isocyanate |
JP2001031639A (ja) * | 1999-07-15 | 2001-02-06 | Mitsubishi Gas Chem Co Inc | 1,5−ナフチレンジイソシアネートの製造方法 |
CN101011657A (zh) * | 2007-01-25 | 2007-08-08 | 中国科学院成都有机化学有限公司 | 一种芳(烷)基氨基甲酸酯热分解制备异氰酸酯的催化剂及应用 |
CN101492397A (zh) * | 2008-01-22 | 2009-07-29 | 中国科学院成都有机化学有限公司 | 连续制备1,6-六亚甲基二异氰酸酯的方法 |
CN100528354C (zh) * | 2008-05-19 | 2009-08-19 | 中国科学院山西煤炭化学研究所 | ZnO/SBA-15复合纳米催化剂及制法和应用 |
CN101386585B (zh) * | 2008-11-04 | 2012-05-09 | 烟台万华聚氨酯股份有限公司 | 一种热分解制备二异氰酸酯的方法 |
-
2011
- 2011-06-20 EP EP11725938.2A patent/EP2585433A1/de not_active Withdrawn
- 2011-06-20 JP JP2013515826A patent/JP2013540101A/ja not_active Withdrawn
- 2011-06-20 US US13/163,928 patent/US20110313192A1/en not_active Abandoned
- 2011-06-20 KR KR1020137001562A patent/KR20130089233A/ko not_active Withdrawn
- 2011-06-20 CN CN2011800304321A patent/CN102947267A/zh active Pending
- 2011-06-20 WO PCT/EP2011/060176 patent/WO2011161029A1/de active Application Filing
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3734941A (en) * | 1968-09-06 | 1973-05-22 | American Cyanamid Co | Process for converting urethanes to isocyanates |
US3919279A (en) * | 1974-06-26 | 1975-11-11 | Atlantic Richfield Co | Catalytic production of isocyanates from esters of carbamic acids |
DE2635490A1 (de) * | 1975-08-07 | 1977-02-24 | Mitsui Toatsu Chemicals | Verfahren zur herstellung von aromatischen isocyanaten |
EP0092738A1 (de) | 1982-04-27 | 1983-11-02 | Bayer Ag | Verfahren zur kontinuierlichen thermischen Spaltung von Carbamidsäureestern |
US5194660A (en) * | 1990-12-21 | 1993-03-16 | Union Carbide Chemicals & Plastics Technology Corporation | Processes for producing carbamates and isocyanates |
EP0555628A2 (de) | 1992-01-10 | 1993-08-18 | Nippon Shokubai Co., Ltd. | Verfahren zur Herstellung von Isocyanaten |
EP0795543A1 (de) | 1996-03-15 | 1997-09-17 | Bayer Ag | Verwendung von hochsiedenden Lösemitteln bzw. -gemischen als Wärmetauschmedium für die thermische Spaltung von Carbamidsäureestern |
DE19907648A1 (de) | 1999-02-23 | 2000-08-24 | Basf Ag | Verfahren zur Herstellung von Isocyanaten durch Spaltung von Urethanen |
US20060025626A1 (en) * | 2004-07-28 | 2006-02-02 | Degussa Ag | Multistage continuous preparation of cycloaliphatic diisocyanates |
Non-Patent Citations (2)
Title |
---|
JIANFU LIU ET AL.: "ZnCl2 supported on NaY zeolite by solid-state interaction under microwave irradiation and used as heterogeneous catalysts for high regioselective Diels-Alder reaction of myrcene and acrolein", JOURNAL OF MOLECULAR CATALYSIS A: CHEMICAL, vol. 209, 2004, pages 171 - 177, XP002660793 * |
JOURNAL OF MOLECULAR CATALYSIS A: CHEMICAL, vol. 209, 2004, pages 171 - 177 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8933262B2 (en) | 2011-05-24 | 2015-01-13 | Basf Se | Process for preparing polyisocyanates from biomass |
Also Published As
Publication number | Publication date |
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CN102947267A (zh) | 2013-02-27 |
US20110313192A1 (en) | 2011-12-22 |
KR20130089233A (ko) | 2013-08-09 |
EP2585433A1 (de) | 2013-05-01 |
JP2013540101A (ja) | 2013-10-31 |
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