EP1973870A1 - Verfahren zur herstellung flüssiger, lagerstabiler carbodiimid- und/oder uretonimingruppen aufweisender organischer isocyanate - Google Patents
Verfahren zur herstellung flüssiger, lagerstabiler carbodiimid- und/oder uretonimingruppen aufweisender organischer isocyanateInfo
- Publication number
- EP1973870A1 EP1973870A1 EP06841178A EP06841178A EP1973870A1 EP 1973870 A1 EP1973870 A1 EP 1973870A1 EP 06841178 A EP06841178 A EP 06841178A EP 06841178 A EP06841178 A EP 06841178A EP 1973870 A1 EP1973870 A1 EP 1973870A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- orthoester
- isocyanate
- carbodiimide
- organic isocyanates
- mixtures
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 239000012948 isocyanate Substances 0.000 title claims abstract description 67
- 150000002513 isocyanates Chemical class 0.000 title claims abstract description 67
- 150000001718 carbodiimides Chemical class 0.000 title claims abstract description 29
- 239000007788 liquid Substances 0.000 title abstract description 8
- 238000004519 manufacturing process Methods 0.000 title abstract description 4
- 238000000034 method Methods 0.000 claims abstract description 39
- 239000000203 mixture Substances 0.000 claims abstract description 34
- -1 preferably Polymers 0.000 claims abstract description 13
- 239000004814 polyurethane Substances 0.000 claims abstract description 8
- 229920002635 polyurethane Polymers 0.000 claims abstract description 8
- 150000002905 orthoesters Chemical class 0.000 claims description 48
- 239000003054 catalyst Substances 0.000 claims description 27
- 230000008569 process Effects 0.000 claims description 18
- 238000002360 preparation method Methods 0.000 claims description 14
- 125000001931 aliphatic group Chemical group 0.000 claims description 10
- 125000003118 aryl group Chemical group 0.000 claims description 10
- 239000000126 substance Substances 0.000 claims description 9
- 125000000524 functional group Chemical group 0.000 claims description 8
- 125000005842 heteroatom Chemical group 0.000 claims description 8
- 241001550224 Apha Species 0.000 claims description 7
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 6
- 150000001735 carboxylic acids Chemical class 0.000 claims description 6
- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 claims description 4
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 claims description 4
- NDQXKKFRNOPRDW-UHFFFAOYSA-N 1,1,1-triethoxyethane Chemical compound CCOC(C)(OCC)OCC NDQXKKFRNOPRDW-UHFFFAOYSA-N 0.000 claims description 3
- 239000004594 Masterbatch (MB) Substances 0.000 claims description 3
- PYOKUURKVVELLB-UHFFFAOYSA-N trimethyl orthoformate Substances COC(OC)OC PYOKUURKVVELLB-UHFFFAOYSA-N 0.000 claims description 3
- FGWYWKIOMUZSQF-UHFFFAOYSA-N 1,1,1-triethoxypropane Chemical compound CCOC(CC)(OCC)OCC FGWYWKIOMUZSQF-UHFFFAOYSA-N 0.000 claims description 2
- HDPNBNXLBDFELL-UHFFFAOYSA-N 1,1,1-trimethoxyethane Chemical compound COC(C)(OC)OC HDPNBNXLBDFELL-UHFFFAOYSA-N 0.000 claims description 2
- ZGMNAIODRDOMEK-UHFFFAOYSA-N 1,1,1-trimethoxypropane Chemical compound CCC(OC)(OC)OC ZGMNAIODRDOMEK-UHFFFAOYSA-N 0.000 claims description 2
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 claims description 2
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims description 2
- 235000019253 formic acid Nutrition 0.000 claims description 2
- 235000019260 propionic acid Nutrition 0.000 claims description 2
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 claims description 2
- CWLNAJYDRSIKJS-UHFFFAOYSA-N triethoxymethoxyethane Chemical compound CCOC(OCC)(OCC)OCC CWLNAJYDRSIKJS-UHFFFAOYSA-N 0.000 claims description 2
- GKASDNZWUGIAMG-UHFFFAOYSA-N triethyl orthoformate Chemical compound CCOC(OCC)OCC GKASDNZWUGIAMG-UHFFFAOYSA-N 0.000 claims description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims 4
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 claims 2
- 239000000377 silicon dioxide Substances 0.000 claims 2
- 235000011054 acetic acid Nutrition 0.000 claims 1
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 abstract description 5
- 239000004033 plastic Substances 0.000 abstract description 4
- 229920003023 plastic Polymers 0.000 abstract description 4
- 229920005830 Polyurethane Foam Polymers 0.000 abstract description 2
- 239000011496 polyurethane foam Substances 0.000 abstract 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 18
- 238000006243 chemical reaction Methods 0.000 description 14
- 239000007858 starting material Substances 0.000 description 10
- 229920005862 polyol Polymers 0.000 description 9
- 150000003077 polyols Chemical class 0.000 description 9
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 8
- 230000009257 reactivity Effects 0.000 description 8
- 239000002253 acid Substances 0.000 description 7
- 150000001875 compounds Chemical class 0.000 description 7
- 230000035484 reaction time Effects 0.000 description 7
- 239000007795 chemical reaction product Substances 0.000 description 6
- 229960002017 echothiophate Drugs 0.000 description 6
- BJOLKYGKSZKIGU-UHFFFAOYSA-N ecothiopate Chemical compound CCOP(=O)(OCC)SCC[N+](C)(C)C BJOLKYGKSZKIGU-UHFFFAOYSA-N 0.000 description 6
- 239000003381 stabilizer Substances 0.000 description 6
- 125000005442 diisocyanate group Chemical group 0.000 description 5
- 239000005056 polyisocyanate Substances 0.000 description 5
- 229920001228 polyisocyanate Polymers 0.000 description 5
- 239000011541 reaction mixture Substances 0.000 description 5
- ITMCEJHCFYSIIV-UHFFFAOYSA-M triflate Chemical compound [O-]S(=O)(=O)C(F)(F)F ITMCEJHCFYSIIV-UHFFFAOYSA-M 0.000 description 5
- FTVLMFQEYACZNP-UHFFFAOYSA-N trimethylsilyl trifluoromethanesulfonate Chemical compound C[Si](C)(C)OS(=O)(=O)C(F)(F)F FTVLMFQEYACZNP-UHFFFAOYSA-N 0.000 description 5
- JIABEENURMZTTI-UHFFFAOYSA-N 1-isocyanato-2-[(2-isocyanatophenyl)methyl]benzene Chemical compound O=C=NC1=CC=CC=C1CC1=CC=CC=C1N=C=O JIABEENURMZTTI-UHFFFAOYSA-N 0.000 description 4
- LFSYUSUFCBOHGU-UHFFFAOYSA-N 1-isocyanato-2-[(4-isocyanatophenyl)methyl]benzene Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=CC=C1N=C=O LFSYUSUFCBOHGU-UHFFFAOYSA-N 0.000 description 4
- ZBVOEVQTNYNNMY-UHFFFAOYSA-N O=P1=CCCC1 Chemical class O=P1=CCCC1 ZBVOEVQTNYNNMY-UHFFFAOYSA-N 0.000 description 4
- LNWBFIVSTXCJJG-UHFFFAOYSA-N [diisocyanato(phenyl)methyl]benzene Chemical class C=1C=CC=CC=1C(N=C=O)(N=C=O)C1=CC=CC=C1 LNWBFIVSTXCJJG-UHFFFAOYSA-N 0.000 description 4
- 150000007513 acids Chemical class 0.000 description 4
- 238000006555 catalytic reaction Methods 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 4
- 235000012239 silicon dioxide Nutrition 0.000 description 4
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 239000002168 alkylating agent Substances 0.000 description 3
- 229940100198 alkylating agent Drugs 0.000 description 3
- 229910052801 chlorine Inorganic materials 0.000 description 3
- 239000000460 chlorine Substances 0.000 description 3
- 125000004122 cyclic group Chemical group 0.000 description 3
- CZZYITDELCSZES-UHFFFAOYSA-N diphenylmethane Chemical class C=1C=CC=CC=1CC1=CC=CC=C1 CZZYITDELCSZES-UHFFFAOYSA-N 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- MGYGFNQQGAQEON-UHFFFAOYSA-N 4-tolyl isocyanate Chemical compound CC1=CC=C(N=C=O)C=C1 MGYGFNQQGAQEON-UHFFFAOYSA-N 0.000 description 2
- 239000004721 Polyphenylene oxide Substances 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 150000001805 chlorine compounds Chemical class 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 2
- 238000010790 dilution Methods 0.000 description 2
- 239000012895 dilution Substances 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 150000007522 mineralic acids Chemical class 0.000 description 2
- 229920005906 polyester polyol Polymers 0.000 description 2
- 229920000570 polyether Polymers 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 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 2
- ITMCEJHCFYSIIV-UHFFFAOYSA-N triflic acid Chemical compound OS(=O)(=O)C(F)(F)F ITMCEJHCFYSIIV-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- DNIAPMSPPWPWGF-GSVOUGTGSA-N (R)-(-)-Propylene glycol Chemical compound C[C@@H](O)CO DNIAPMSPPWPWGF-GSVOUGTGSA-N 0.000 description 1
- IUUONVQOMMQAEH-UHFFFAOYSA-N 1-methyl-2,3-dihydro-1$l^{5}-phosphole 1-oxide Chemical compound CP1(=O)CCC=C1 IUUONVQOMMQAEH-UHFFFAOYSA-N 0.000 description 1
- MQLQAXIVFGHSDE-UHFFFAOYSA-N 1-methyl-2,5-dihydro-1$l^{5}-phosphole 1-oxide Chemical compound CP1(=O)CC=CC1 MQLQAXIVFGHSDE-UHFFFAOYSA-N 0.000 description 1
- JHYNEQNPKGIOQF-UHFFFAOYSA-N 3,4-dihydro-2h-phosphole Chemical class C1CC=PC1 JHYNEQNPKGIOQF-UHFFFAOYSA-N 0.000 description 1
- 239000005057 Hexamethylene diisocyanate Substances 0.000 description 1
- 239000005058 Isophorone diisocyanate Substances 0.000 description 1
- COGFELMKDSTKHZ-UHFFFAOYSA-N O=P1C=CC=C1 Chemical compound O=P1C=CC=C1 COGFELMKDSTKHZ-UHFFFAOYSA-N 0.000 description 1
- 101100386054 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) CYS3 gene Proteins 0.000 description 1
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 description 1
- KXBFLNPZHXDQLV-UHFFFAOYSA-N [cyclohexyl(diisocyanato)methyl]cyclohexane Chemical compound C1CCCCC1C(N=C=O)(N=C=O)C1CCCCC1 KXBFLNPZHXDQLV-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- CDQSJQSWAWPGKG-UHFFFAOYSA-N butane-1,1-diol Chemical compound CCCC(O)O CDQSJQSWAWPGKG-UHFFFAOYSA-N 0.000 description 1
- BMRWNKZVCUKKSR-UHFFFAOYSA-N butane-1,2-diol Chemical compound CCC(O)CO BMRWNKZVCUKKSR-UHFFFAOYSA-N 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- AOGYCOYQMAVAFD-UHFFFAOYSA-N chlorocarbonic acid Chemical class OC(Cl)=O AOGYCOYQMAVAFD-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- GTZOYNFRVVHLDZ-UHFFFAOYSA-N dodecane-1,1-diol Chemical compound CCCCCCCCCCCC(O)O GTZOYNFRVVHLDZ-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 description 1
- ACCCMOQWYVYDOT-UHFFFAOYSA-N hexane-1,1-diol Chemical compound CCCCCC(O)O ACCCMOQWYVYDOT-UHFFFAOYSA-N 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 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 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- DNIAPMSPPWPWGF-UHFFFAOYSA-N monopropylene glycol Natural products CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 1
- VJQGGZWPOMJLTP-UHFFFAOYSA-N octadecane-1,1-diol Chemical compound CCCCCCCCCCCCCCCCCC(O)O VJQGGZWPOMJLTP-UHFFFAOYSA-N 0.000 description 1
- OEIJHBUUFURJLI-UHFFFAOYSA-N octane-1,8-diol Chemical compound OCCCCCCCCO OEIJHBUUFURJLI-UHFFFAOYSA-N 0.000 description 1
- 238000010943 off-gassing Methods 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 235000013772 propylene glycol Nutrition 0.000 description 1
- 101150035983 str1 gene Proteins 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 125000003698 tetramethyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
- 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 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C267/00—Carbodiimides
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic Table
- C07F9/02—Phosphorus compounds
- C07F9/547—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom
- C07F9/6564—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom having phosphorus atoms, with or without nitrogen, oxygen, sulfur, selenium or tellurium atoms, as ring hetero atoms
- C07F9/6568—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom having phosphorus atoms, with or without nitrogen, oxygen, sulfur, selenium or tellurium atoms, as ring hetero atoms having phosphorus atoms as the only ring hetero atoms
-
- 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
- C08G18/08—Processes
- C08G18/09—Processes comprising oligomerisation of isocyanates or isothiocyanates involving reaction of a part of the isocyanate or isothiocyanate groups with each other in the reaction mixture
- C08G18/095—Processes comprising oligomerisation of isocyanates or isothiocyanates involving reaction of a part of the isocyanate or isothiocyanate groups with each other in the reaction mixture oligomerisation to carbodiimide or uretone-imine groups
Definitions
- the invention relates to a process for the preparation of liquid, storage-stable carbodiimide (CD) and / or uretonimine (UI) groups containing isocyanate mixtures having a low color number, the isocyanate mixtures obtainable by this process and their use for the preparation of mixtures with other isocyanates or for the preparation of isocyanate-containing prepolymers and of polyurethane plastics, preferably polyurethane foams.
- CD storage-stable carbodiimide
- UI uretonimine
- CD and / or UI groups containing isocyanate mixtures can be easily with the highly effective catalysts from the phospholine series, in particular the phospholine oxide series, by the method according to US-A-2,853,473, US-A-6, 120,699 and EP -A-515,933.
- the high catalytic activity of the phospholine catalysts is desirable in order to initiate the carbodiimidization reaction under mild temperature conditions, but on the other hand no process is known which effectively eliminates phospholine catalysis or phospholine oxide catalysis without restriction guaranteed.
- the carbodiimidized isocyanates tend to post-reaction, ie they gase due to CO 2 evolution. This then leads to pressure build-up, for example in the storage containers, especially at higher temperatures.
- stoppers are e.g. in the patents DE-A-25 37 685, EP-A-515 933, EP-A-609 698, and US-A-6, 120,699 and include e.g. Acids, acid chlorides, chloroformates, silylated acids and halides of main group elements. Stopping the catalyst with acids, e.g. may also be present as acid chlorides is not sufficiently effective.
- CD / UI-containing isocyanate mixtures prepared by means of phospholine catalysis are stopped with, for example, trimethylsilyl trifluoromethanesulphonate (TMST) with at least the equimolar amount, preferably 1 to 2 times the molar amount, based on the catalyst used.
- TMST trimethylsilyl trifluoromethanesulphonate
- CD / UI-containing isocyanates prepared in this way are only of limited use for the preparation of prepolymers, ie reaction products of these CD / UI-containing isocyanates with polyols.
- the correspondingly prepared reaction products of polyols and the CD / UI-modified isocyanates tend for outgassing, which can lead to a pressure build-up in the transport containers or foaming in the handling of such products.
- the object of the present invention was therefore to provide a simple and economical process for the preparation of liquid, storage-stable and light carbodiimide and / or uretonimine groups-containing isocyanate mixtures which does not have the mentioned defects and liquid, storage-stable isocyanate mixtures with low color numbers leads.
- the invention relates to a process for preparing carbodiimide and / or uretonimine containing organic isocyanates, in which one or more organic isocyanates having a Hazen color number of ⁇ 100 APHA, preferably ⁇ 50 APHA, partially carbodiimidized with phospholine-type catalysts, and Subsequently, the carbodiimidization reaction is stopped, characterized in that the carbodiimidization is carried out in the presence of an orthoester. As a result, the required reaction time can be lowered or kept low and / or the required amount of catalyst can be reduced.
- Orthoester is preferably used in substance, ie without dilution, or as a masterbatch, for example, as a solution of the orthoester in the starting isocyanate or already carbodiimidized isocyanate added.
- the measurement of the Hazen color number can be carried out in accordance with DIN / EN / ISO 6271-2 (draft September 2002) in substance against water as a reference at a layer thickness of 5 cm.
- a measuring device z. B. a photometer Long LICO 300 can be used.
- organic isocyanates having a higher color number can also be used as starting materials. In this case, however, the advantages in terms of favorable color values can not be fully exploited.
- the invention also relates to the carbodiimide and / or uretonimine containing organic isocyanates obtainable by the above-mentioned process.
- These carbodiimide and / or uretonimine having organic isocyanates are liquid at room temperature and depending on the CD / UI content and / or the isocyanate used up to low temperatures (eg 0 0 C).
- the invention also provides for the use of the organic isocyanates having carbodiimide and / or uretonimine groups according to the invention for the preparation of mixtures with further isocyanates or for the preparation of isocyanate group-containing prepolymers having an improved color number.
- the invention also relates to the use of the organic isocyanates containing carbodiimide and / or uretonimine groups according to the invention and of the isocyanate blends and / or prepolymers prepared therefrom having an improved color number for the production of polyurethane plastics.
- the process according to the invention it is possible to use any organic isocyanates having a Hazen color number of ⁇ 100 APHA, preferably ⁇ 50 APHA.
- the process according to the invention is preferably used for the carbodiimidization of organic diisocyanates which can be used in polyurethane chemistry.
- organic isocyanates having a higher color number can also be used as starting materials. In this case, however, the advantages in terms of favorable color values can not be fully exploited.
- Suitable isocyanates are, for example, aromatic, araliphatic, aliphatic and / or cycloaliphatic diisocyanates and / or polyisocyanates. - A -
- AIs representatives of the aliphatic and / or cycloaliphatic diisocyanate are exemplified by isophorone diisocyanate, hexamethylene diisocyanate and dicyclohexylmethane diisocyanate (in each case the pure isomers and any isomer mixtures).
- araliphatic diisocyanate are, for example, the various isomers of xylidene diisocyanate.
- aromatic di- and polyisocyanates such as tolylene diisocyanate and di- and polyisocyanates of the diphenylmethane series.
- Aromatic diisocyanates such as 2,4- and / or 2,6-diisocyanatotoluene (TDI), 2,2'-, 2,4'- and / or 4,4'-diisocyanatodiphenylmethane (MDI) or any desired mixtures of such aromatic diisocyanates .
- TDI 2,4- and / or 2,6-diisocyanatotoluene
- MDI 4,4'-diisocyanatodiphenylmethane
- 2,2'- 2,4'- preferred organic isocyanates are especially aromatic diisocyanates such as 2,4- and / or 2,6-diisocyanatotoluene (TDI), and / or 4,4 '-Diiso- cyanatodiphenylmethan (MDI ) or any mixtures of such aromatic diisocyanates.
- aromatic diisocyanates such as 2,4- and / or 2,6-diisocyanatotoluene (TDI), and / or 4,4 '-Diiso- cyanatodiphenylmethan (MDI ) or any mixtures of such aromatic diisocyanates.
- 2,2'-, 2,4'- and / or 4,4'-diisocyanatodiphenylmethane or any mixtures of such aromatic diisocyanates, wherein the sum of 2,2'-, 2,4'- and or 4,4'-diisocyanatodiphenylmethane in the starting material (organic isocyanate) is at least 85 wt .-%, and wherein the diisocyanatodiphenylmethane isomers to 0 to 100 wt .-% of 4,4'-diisocyanatodiphenylmethane, 100 to 0 % By weight of 2,4'-diisocyanatodiphenylmethane and from 0 to 8% by weight of 2,2'-diisocyanatodiphenylmethane, the said percentages being equal to 100% by weight.
- MDI 4,4'-diisocyanatodiphenylmethane
- 2,2'-, 2,4'- and / or 4,4'-diisocyanatodiphenylmethane or any mixtures of aromatic diisocyanates, where the sum of 2,2'-, 2,4 ' and / or 4,4'-diisocyanatodiphenylmethane in the starting material (organic isocyanate) is at least 90% by weight, and where the diisocyanatodiphenylmethane isomers contain from 0 to 100% by weight of 4,4'-diisocyanatodiphenyl methane, 100 to 0 wt .-% of 2,4'-diisocyanatodiphenylmethane and to 0 to 8 wt .-% of 2,2'-diisocyanatodiphenylmethane composed, wherein said percentages to 100 wt .-% complement.
- MDI 2,2'-, 2,4'- and / or 4,4'-diisocyanatodiphen
- 2,2'-, 2,4'- and / or 4,4'-diisocyanatodiphenylmethane MDI or any mixtures of aromatic diisocyanates
- the sum of 2,2'-, 2,4'- and / or 4,4'-diisocyanatodiphenylmethane in the starting material (organic isocyanate) is at least 99 wt .-%
- the process according to the invention is carried out in the presence of phospholine-type catalysts.
- the phospholine-type catalysts are known, for example, from EP-A-515 933 and US-A-6, 120,699. Typical examples of these catalysts are, for example, the mixtures of the phospholine oxides of the formula ## STR1 ## known from the prior art:
- the amount of catalyst used depends on the quality and / or the reactivity of the starting isocyanates. The amount of catalyst necessary in each case can therefore be determined most simply in a preliminary experiment.
- orthoesters ensures that the reactivity of the starting isocyanate is increased. This can e.g. causally done by counteracting the reactivity-reducing effect of potentially eliminating HCl secondary components in the starting isocyanate. But other mechanisms of action are possible.
- Suitable orthoesters are, for example, orthoesters of a carboxylic acid.
- Suitable orthoesters of the carboxylic acids have the general structure R 1 - (C (OR 2 ) (OR 3 ) (OR 4 )) n , where
- R 1 is an aliphatic, cycloaliphatic, aromatic or araliphatic radical which may contain heteroatoms and / or further functional groups,
- R 2 to R 4 denote an aliphatic, cycloaliphatic, aromatic or araliphatic radical which may contain heteroatoms and / or further functional groups,
- R 2 to R 4 may either be the same or different, or two of R 2 to R 4 may be the same. It is also possible that two or three of the radicals R 2 to R 4 are parts of a single molecule and thus present cyclic or bicyclic orthoester structures.
- Suitable orthoesters of the carboxylic acids are e.g. Orthoester of formic acid, such as. Trimethyl orthoformate, triethyl orthoformate, orthoesters of acetic acid, e.g. Trimethyl orthoacetate, triethyl orthoacetate, orthoester of propionic acid, e.g. Trimethyl orthopropionate, triethyl orthopropionate or mixtures thereof.
- Orthoester of formic acid such as. Trimethyl orthoformate, triethyl orthoformate, orthoesters of acetic acid, e.g. Trimethyl orthoacetate, triethyl orthoacetate, orthoester of propionic acid, e.g. Trimethyl orthopropionate, triethyl orthopropionate or mixtures thereof.
- Suitable orthoesters are, for example, the orthoesters of carbonic acid.
- Suitable orthoesters of carbonic acid have the general structure C (OR 2 ) (OR 3 ) (OR 4 ) (OR 5 ), where
- R 2 to R 5 denote an aliphatic, cycloaliphatic, aromatic or araliphatic radical which may contain heteroatoms and / or further functional groups.
- Jl3_bis-R ⁇ can-either-all-or-don ⁇ t immediately all -versehieden Being-or-two of the radicals R 2 ⁇ to ⁇ 5 ⁇ R may be the same, or two or three of the radicals R 2 to R 5 can be the same. It is also possible that two or two or three of the radicals R 2 to R 5 are parts of a single molecule and thus cyclic or bicyclic orthoester structures are present.
- Suitable orthoesters of carbonic acid are e.g. Tetramethyl orthocarbbnate and tetraethyl orthocarbonate or mixtures thereof.
- the compounds mentioned are considered as examples only; suitable orthoesters of carbonic acid are not limited to the compounds mentioned.
- Suitable orthoesters are, for example, the orthoesters of silicic acid.
- Suitable orthoesters of silicic acid have the general structure Si (OR 2 ) (OR 3 ) (OR 4 ) (OR 5 ), where
- R 2 to R 5 denote an aliphatic, cycloaliphatic, aromatic or araliphatic radical which may contain heteroatoms and / or further functional groups.
- R 2 to R 5 may either be the same or different, or two of R 2 to R 5 may each be the same, or two or three of R 2 to R 5 may be the same. It is also possible that two or two or three of the radicals R 2 to R are parts of a single molecule and thus cyclic or bicyclic orthoester structures are present.
- Suitable orthoesters of silicic acid include Tetramethylorthosüicat and tetraethyl orthosilicate or mixtures thereof. The compounds mentioned are considered as examples only; suitable orthoesters of silicic acid are not limited to the compounds mentioned.
- the orthoester or the mixture of several different orthoesters can be added immediately before, simultaneously with or even after the addition of the catalyst.
- the orthoester only becomes active after the addition of the catalyst, i. during carbodiimidization.
- the best time of addition can be determined in a simple preliminary test and is preferably before reaching 50%, more preferably before reaching 30% and most preferably before reaching 20% of the total desired conversion of isocyanate.
- the optimum amount of the orthoester can also be determined in a simple preliminary test and is preferably ⁇ 1000 ppm, more preferably ⁇ 250 ppm and very particularly preferably ⁇ 100 ppm, based on the weight of the isocyanate used.
- the addition of the orthoester can thus be carried out to the starting isocyanate or to the reaction mixture during the carbodiimidization.
- the orthoester is preferably used in substance, i. without dilution, or as a masterbatch, for example as a solution of the orthoester in the starting isocyanate or already carbodiimidis faced isocyanate added.
- the carbodiimidization reaction is usually carried out in the temperature range between 50 to 150 ° C, preferably from 60 to 100 0 C, performed. However, significantly higher reaction temperatures are possible (up to about 280 0 C). The optimum reaction temperature depends on the nature of the starting isocyanates and / or the catalyst used and can be determined in a simple preliminary experiment.
- the carbodiimidization reaction is generally terminated upon reaching a degree of carbodiimidization (carbodiimidization degree is the percentage of carbodiimidized isocyanate groups based on the total amount of isocyanate groups present in starting isocyanate) of from 3 to 50%, preferably from 5 to 30%.
- a degree of carbodiimidization is the percentage of carbodiimidized isocyanate groups based on the total amount of isocyanate groups present in starting isocyanate
- the degree of carbodiimidization can be determined during the performance of the method according to the invention by determining the NCO value, for example by means of titration known per se to the person skilled in the art or by means of an online method.
- a suitable online method is, for example, near-infrared or mid-infrared analysis.
- the degree of carbodiimidization can likewise be recognized during the performance of the process according to the invention, for example, by the amount of carbon dioxide escaping in the reactor mixture. This volumetrically determinable amount of carbon dioxide is thus at any time information about the reached Carbodiimidmaschinesgrad.
- a stopper preferably Trimethylsilyltrifluormethansulfonat (TMST) or an alkylating agent or a Mixture of said stopper used.
- TMST Trimethylsilyltrifluormethansulfonat
- An alkylating agent or trimethylsilyl trifluoromethanesulfonate (TMST) is preferably used as the sole stopper.
- Preferred alkylating agents are esters of trifluoromethanesulfonic acid, esters of inorganic acids (preferably strong inorganic acids) or trialkyloxonium compounds.
- the reaction product of the carbodiimidization may contain color stabilizers, such as are commonly added to isocyanates.
- the time of addition is not critical.
- the color stabilizers can either be added to the isocyanate used as starting material before the carbodiimidization, or the reaction product after completion of the reaction. It is also possible to add color stabilizers to both the starting material and the reaction product.
- Such stabilizers are generally known to those skilled in the art and include e.g. Substances from the group of sterically hindered phenols, the Phosphorigklaer or sterically hindered amines.
- the color stabilizers can each be used alone or in admixture with other representatives of the same or different substance groups.
- the amounts of the color stabilizers used are in the order of magnitude known to the person skilled in the art, usually in the range from 100 ppm to 10000 ppm for the individual substance or the mixture, based on the isocyanate used as the starting material or the reaction product of the carbodiimidization.
- Isocyanate group-containing prepolymers are obtained by reacting the carbodiimide and / or uretonimine-containing organic isocyanates prepared by the process according to the invention with polyols customary in polyurethane chemistry.
- Suitable polyols are both simple polyhydric alcohols of the molecular weight range 62 to 599 g / mol, preferably 62 to 300 g / mol, such as ethylene glycol, trimethylolpropane, 1,2-propanediol, 1,2-butanediol or butanediol 1-2,3, hexanediol , Octanediol, dodecanediol and / or octadecanediol, but in particular higher molecular weight polyether polyols and / or polyester polyols known from polyurethane chemistry with molecular weights of 600 to 8000 g / mol, preferably 800 to
- Phospholoxide type catalyst technical mixture of 1-methyl-1-oxo-1-phosphacyclopent-2-ene and 1-methyl-1-oxo-1-phosphacyclopent-3-ene, 1% by weight in toluene
- the Hazen color number is measured in accordance with DIN / EN / ISO 6271-2 (draft September 2002) in substance against water as reference at a layer thickness of 5 cm.
- a measuring device z. B. a photometer Long LICO 300 can be used.
- Comparative Examples 1 and 2 illustrate the negative influence of the increased value of hydrolyzable chlorine on the reactivity or the reaction time.
- an improved reactivity with respect to Comparative Example 2 is achieved with the same content of hydrolyzable chlorine; After 360 minutes, in Comparative Example 2, the NCO value had dropped from originally about 33.6% to only 31.6%, compared to 29.5% in the example according to the invention.
- Comparative Example 1 shows that the addition of the orthoester with a double content of hydrolyzable chlorine again achieves comparable reactivity, ie. H. to achieve the same NCO value, a comparable reaction time is made possible.
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Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE102006000825A DE102006000825A1 (de) | 2006-01-05 | 2006-01-05 | Verfahren zur Herstellung flüssiger, lagerstabiler Carbodiimidgruppen aufweisender organischer Isocyanate |
PCT/EP2006/012552 WO2007076999A1 (de) | 2006-01-05 | 2006-12-27 | Verfahren zur herstellung flüssiger, lagerstabiler carbodiimid- und/oder uretonimingruppen aufweisender organischer isocyanate |
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EP1973870A1 true EP1973870A1 (de) | 2008-10-01 |
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EP06841178A Withdrawn EP1973870A1 (de) | 2006-01-05 | 2006-12-27 | Verfahren zur herstellung flüssiger, lagerstabiler carbodiimid- und/oder uretonimingruppen aufweisender organischer isocyanate |
Country Status (7)
Country | Link |
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US (1) | US7662989B2 (ko) |
EP (1) | EP1973870A1 (ko) |
JP (1) | JP2009522418A (ko) |
KR (1) | KR20080090500A (ko) |
CN (1) | CN101356154A (ko) |
DE (1) | DE102006000825A1 (ko) |
WO (1) | WO2007076999A1 (ko) |
Families Citing this family (9)
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DE102006000833A1 (de) * | 2006-01-05 | 2007-07-12 | Bayer Materialscience Ag | Verfahren zur Herstellung flüssiger, lagerstabiler Carbodiimid- und/oder Uretonimingruppen aufweisender organischer Isocyanate |
DE102006000822A1 (de) * | 2006-01-05 | 2007-07-12 | Bayer Materialscience Ag | Verfahren zur Herstellung flüssiger, lagerstabiler Carbodiimid- und/oder Uretonimingruppen aufweisender organischer Isocyanate |
US9714378B2 (en) * | 2008-10-29 | 2017-07-25 | Basf Se | Proppant |
EA023407B1 (ru) * | 2008-10-29 | 2016-06-30 | Басф Се | Пропант для гидравлического разрыва подземного пласта |
EP3262091B1 (de) * | 2015-02-26 | 2019-12-25 | Covestro Deutschland AG | Verfahren zur herstellung einer polycarbodiimide umfassenden zusammensetzung mit verbesserter lagerstabilität |
CN108586706B (zh) * | 2018-04-18 | 2021-06-29 | 万华化学集团股份有限公司 | 制备含有碳化二亚胺和/或脲酮亚胺类衍生物的改性异氰酸酯混合物的方法 |
CN111747867B (zh) * | 2020-06-28 | 2022-08-02 | 万华化学(宁波)有限公司 | 一种低色号低voc改性异氰酸酯的制备方法 |
CN111689874B (zh) * | 2020-07-11 | 2022-07-12 | 万华化学(宁波)有限公司 | 一种降低碳化二亚胺改性有机异氰酸酯色数的方法、低色数异氰酸酯及其应用 |
CN116283666A (zh) * | 2023-02-15 | 2023-06-23 | 万华生态科技有限公司 | 一种高纯4,4’-二苯基甲烷二异氰酸酯的制备方法 |
Family Cites Families (15)
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US2853473A (en) | 1956-08-27 | 1958-09-23 | Du Pont | Production of carbodiimides |
GB1356851A (en) * | 1971-06-11 | 1974-06-19 | Ici Ltd | Isocyanate/uretonimine compositions for polyurethanes |
DE2504334A1 (de) * | 1975-02-01 | 1976-08-05 | Bayer Ag | Hochmolekulare, unloesliche carbodiimidisierungskatalysatoren |
DE2537685C2 (de) | 1975-08-23 | 1989-04-06 | Bayer Ag, 5090 Leverkusen | Verfahren zur teilweisen Carbodiimidisierung der Isocyanatgruppen von organischen Polyisocyanaten |
DE2606419A1 (de) * | 1976-02-18 | 1977-08-25 | Basf Ag | Lagerbestaendige, fluessige carbodiimidgruppen aufweisende polyisocyanate und verfahren zu ihrer herstellung |
US4284730A (en) * | 1980-02-07 | 1981-08-18 | Basf Wyandotte Corporation | Liquid carbodiimide- and uretonimine-isocyanurate-containing polyisocyanate compositions and microcellular foams made therefrom |
DE4117384A1 (de) | 1991-05-28 | 1992-12-03 | Bayer Ag | Verfahren zur herstellung fluessiger, lagerstabiler carbodiimid- und/oder uretonimingruppen aufweisender organischer isocyanate und ihre verwendung zur herstellung von polyurethankunststoffen |
DE4302697A1 (de) | 1993-02-01 | 1994-08-04 | Bayer Ag | Verfahren zur Herstellung organischer Carbodiimide und ihre Verwendung als Kunststoff-Stabilisatoren |
JPH0867662A (ja) * | 1994-08-30 | 1996-03-12 | Sumitomo Bayer Urethane Kk | 液状のジフェニルメタンジイソシアネートの製造法 |
US6120699A (en) | 1998-09-21 | 2000-09-19 | Basf Corporation | Storage stable methylene bis(phenylisocyanate) compositions |
DE102004033849A1 (de) * | 2004-07-13 | 2006-02-16 | Bayer Materialscience Ag | Verfahren zur Herstellung flüssiger, lagerstabiler Carbodiimid- und/oder Uretonimingruppen aufweisender organischer Isocyanate mit niedriger Farbzahl |
DE102004060038A1 (de) | 2004-12-14 | 2006-06-22 | Bayer Materialscience Ag | Verfahren zur Herstellung flüssiger, lagerstabiler Carbodiimid- und/oder Uretonimingruppen aufweisender organischer Isocyanate mit niedriger Farbzahl |
DE102006000822A1 (de) | 2006-01-05 | 2007-07-12 | Bayer Materialscience Ag | Verfahren zur Herstellung flüssiger, lagerstabiler Carbodiimid- und/oder Uretonimingruppen aufweisender organischer Isocyanate |
DE102006000833A1 (de) | 2006-01-05 | 2007-07-12 | Bayer Materialscience Ag | Verfahren zur Herstellung flüssiger, lagerstabiler Carbodiimid- und/oder Uretonimingruppen aufweisender organischer Isocyanate |
DE102006002158A1 (de) | 2006-01-17 | 2007-07-19 | Bayer Materialscience Ag | Verfahren zur Herstellung flüssiger, lagerstabiler Carboddimid- und/oder Uretonimingruppen aufweisender organischer Isocyanate |
-
2006
- 2006-01-05 DE DE102006000825A patent/DE102006000825A1/de not_active Withdrawn
- 2006-12-27 JP JP2008548948A patent/JP2009522418A/ja not_active Withdrawn
- 2006-12-27 WO PCT/EP2006/012552 patent/WO2007076999A1/de active Application Filing
- 2006-12-27 EP EP06841178A patent/EP1973870A1/de not_active Withdrawn
- 2006-12-27 CN CNA2006800505438A patent/CN101356154A/zh active Pending
- 2006-12-27 KR KR1020087019154A patent/KR20080090500A/ko not_active Application Discontinuation
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2007
- 2007-01-03 US US11/649,000 patent/US7662989B2/en not_active Expired - Fee Related
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US20070155938A1 (en) | 2007-07-05 |
CN101356154A (zh) | 2009-01-28 |
DE102006000825A1 (de) | 2007-07-12 |
US7662989B2 (en) | 2010-02-16 |
WO2007076999A1 (de) | 2007-07-12 |
JP2009522418A (ja) | 2009-06-11 |
KR20080090500A (ko) | 2008-10-08 |
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