CN102718683A - 一种制备低色数异氰酸酯的方法及由其制得的异氰酸酯 - Google Patents
一种制备低色数异氰酸酯的方法及由其制得的异氰酸酯 Download PDFInfo
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- CN102718683A CN102718683A CN201210190576XA CN201210190576A CN102718683A CN 102718683 A CN102718683 A CN 102718683A CN 201210190576X A CN201210190576X A CN 201210190576XA CN 201210190576 A CN201210190576 A CN 201210190576A CN 102718683 A CN102718683 A CN 102718683A
- Authority
- CN
- China
- Prior art keywords
- isocyanate
- terminator
- diphenylmethanediisocyanate
- carbodiimide
- reaction
- 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.)
- Granted
Links
- 239000012948 isocyanate Substances 0.000 title claims abstract description 33
- 150000002513 isocyanates Chemical class 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 31
- 150000001718 carbodiimides Chemical class 0.000 claims abstract description 42
- 238000006243 chemical reaction Methods 0.000 claims abstract description 30
- 239000003054 catalyst Substances 0.000 claims abstract description 12
- 239000007788 liquid Substances 0.000 claims abstract description 12
- 150000008064 anhydrides Chemical class 0.000 claims abstract description 9
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000012295 chemical reaction liquid Substances 0.000 claims abstract description 4
- 239000002994 raw material Substances 0.000 claims abstract description 3
- -1 cyclopentenes phosphine class Chemical class 0.000 claims description 26
- 229910052698 phosphorus Inorganic materials 0.000 claims description 23
- 239000011574 phosphorus Substances 0.000 claims description 23
- 150000002148 esters Chemical class 0.000 claims description 21
- 239000000463 material Substances 0.000 claims description 21
- 239000000203 mixture Substances 0.000 claims description 16
- 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 claims description 12
- 125000001931 aliphatic group Chemical group 0.000 claims description 10
- 230000000694 effects Effects 0.000 claims description 9
- 229920000538 Poly[(phenyl isocyanate)-co-formaldehyde] Polymers 0.000 claims description 8
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical class CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 7
- 125000002723 alicyclic group Chemical group 0.000 claims description 7
- 229910001392 phosphorus oxide Inorganic materials 0.000 claims description 5
- 125000000524 functional group Chemical group 0.000 claims description 4
- 125000005842 heteroatom Chemical group 0.000 claims description 4
- 239000005056 polyisocyanate Substances 0.000 claims description 4
- 229920001228 polyisocyanate Polymers 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- KMOUUZVZFBCRAM-OLQVQODUSA-N (3as,7ar)-3a,4,7,7a-tetrahydro-2-benzofuran-1,3-dione Chemical compound C1C=CC[C@@H]2C(=O)OC(=O)[C@@H]21 KMOUUZVZFBCRAM-OLQVQODUSA-N 0.000 claims description 2
- XYFCBTPGUUZFHI-UHFFFAOYSA-N Phosphine Chemical compound P XYFCBTPGUUZFHI-UHFFFAOYSA-N 0.000 claims 4
- 150000001941 cyclopentenes Chemical class 0.000 claims 2
- 229910000073 phosphorus hydride Inorganic materials 0.000 claims 2
- WFDIJRYMOXRFFG-UHFFFAOYSA-N Acetic anhydride Chemical compound CC(=O)OC(C)=O WFDIJRYMOXRFFG-UHFFFAOYSA-N 0.000 claims 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims 1
- IZDROVVXIHRYMH-UHFFFAOYSA-N methanesulfonic anhydride Chemical compound CS(=O)(=O)OS(C)(=O)=O IZDROVVXIHRYMH-UHFFFAOYSA-N 0.000 claims 1
- 238000003860 storage Methods 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 3
- 230000009471 action Effects 0.000 abstract description 2
- HJSPBGHQCVGOEZ-UHFFFAOYSA-N P.C1=CCCC1 Chemical compound P.C1=CCCC1 HJSPBGHQCVGOEZ-UHFFFAOYSA-N 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 239000000047 product Substances 0.000 description 14
- 239000002253 acid Substances 0.000 description 8
- 150000001875 compounds Chemical class 0.000 description 8
- 239000012467 final product Substances 0.000 description 7
- 238000002360 preparation method Methods 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000003756 stirring Methods 0.000 description 5
- ITMCEJHCFYSIIV-UHFFFAOYSA-N triflic acid Chemical compound OS(=O)(=O)C(F)(F)F ITMCEJHCFYSIIV-UHFFFAOYSA-N 0.000 description 4
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 3
- YNQLUTRBYVCPMQ-UHFFFAOYSA-N Ethylbenzene Chemical compound CCC1=CC=CC=C1 YNQLUTRBYVCPMQ-UHFFFAOYSA-N 0.000 description 2
- 239000005057 Hexamethylene diisocyanate Substances 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 2
- 239000002168 alkylating agent Substances 0.000 description 2
- 229940100198 alkylating agent Drugs 0.000 description 2
- 125000003118 aryl group Chemical group 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- OIRDBPQYVWXNSJ-UHFFFAOYSA-N methyl trifluoromethansulfonate Chemical class COS(=O)(=O)C(F)(F)F OIRDBPQYVWXNSJ-UHFFFAOYSA-N 0.000 description 2
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 150000008648 triflates Chemical class 0.000 description 2
- FKTHNVSLHLHISI-UHFFFAOYSA-N 1,2-bis(isocyanatomethyl)benzene Chemical compound O=C=NCC1=CC=CC=C1CN=C=O FKTHNVSLHLHISI-UHFFFAOYSA-N 0.000 description 1
- ZTNJGMFHJYGMDR-UHFFFAOYSA-N 1,2-diisocyanatoethane Chemical class O=C=NCCN=C=O ZTNJGMFHJYGMDR-UHFFFAOYSA-N 0.000 description 1
- ALQLPWJFHRMHIU-UHFFFAOYSA-N 1,4-diisocyanatobenzene Chemical compound O=C=NC1=CC=C(N=C=O)C=C1 ALQLPWJFHRMHIU-UHFFFAOYSA-N 0.000 description 1
- BDQNKCYCTYYMAA-UHFFFAOYSA-N 1-isocyanatonaphthalene Chemical class C1=CC=C2C(N=C=O)=CC=CC2=C1 BDQNKCYCTYYMAA-UHFFFAOYSA-N 0.000 description 1
- GJEZBVHHZQAEDB-UHFFFAOYSA-N 6-oxabicyclo[3.1.0]hexane Chemical compound C1CCC2OC21 GJEZBVHHZQAEDB-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000005058 Isophorone diisocyanate Substances 0.000 description 1
- ZBVOEVQTNYNNMY-UHFFFAOYSA-N O=P1=CCCC1 Chemical compound O=P1=CCCC1 ZBVOEVQTNYNNMY-UHFFFAOYSA-N 0.000 description 1
- 150000001263 acyl chlorides Chemical class 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000002152 alkylating effect Effects 0.000 description 1
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000000536 complexating effect Effects 0.000 description 1
- 208000012839 conversion disease Diseases 0.000 description 1
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 1
- 125000002433 cyclopentenyl group Chemical group C1(=CCCC1)* 0.000 description 1
- 230000009849 deactivation Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- RAABOESOVLLHRU-UHFFFAOYSA-N diazene Chemical compound N=N RAABOESOVLLHRU-UHFFFAOYSA-N 0.000 description 1
- 229910000071 diazene Inorganic materials 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 229960002017 echothiophate Drugs 0.000 description 1
- BJOLKYGKSZKIGU-UHFFFAOYSA-N ecothiopate Chemical compound CCOP(=O)(OCC)SCC[N+](C)(C)C BJOLKYGKSZKIGU-UHFFFAOYSA-N 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 125000000623 heterocyclic group Chemical group 0.000 description 1
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 description 1
- 230000002779 inactivation Effects 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
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- HKKDKUMUWRTAIA-UHFFFAOYSA-N nitridooxidocarbon(.) Chemical compound [O]C#N HKKDKUMUWRTAIA-UHFFFAOYSA-N 0.000 description 1
- YWAKXRMUMFPDSH-UHFFFAOYSA-N pentene Chemical compound CCCC=C YWAKXRMUMFPDSH-UHFFFAOYSA-N 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000007348 radical reaction Methods 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- VSAISIQCTGDGPU-UHFFFAOYSA-N tetraphosphorus hexaoxide Chemical compound O1P(O2)OP3OP1OP2O3 VSAISIQCTGDGPU-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
- 125000003944 tolyl group Chemical group 0.000 description 1
- FTVLMFQEYACZNP-UHFFFAOYSA-N trimethylsilyl trifluoromethanesulfonate Chemical compound C[Si](C)(C)OS(=O)(=O)C(F)(F)F FTVLMFQEYACZNP-UHFFFAOYSA-N 0.000 description 1
- 125000005023 xylyl group Chemical group 0.000 description 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
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CN201210190576.XA CN102718683B (zh) | 2012-06-05 | 2012-06-05 | 一种制备低色数异氰酸酯的方法及由其制得的异氰酸酯 |
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CN201210190576.XA CN102718683B (zh) | 2012-06-05 | 2012-06-05 | 一种制备低色数异氰酸酯的方法及由其制得的异氰酸酯 |
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CN102718683A true CN102718683A (zh) | 2012-10-10 |
CN102718683B CN102718683B (zh) | 2014-08-06 |
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104945585A (zh) * | 2014-03-31 | 2015-09-30 | 东曹株式会社 | 低温贮存稳定性多异氰酸酯组合物、及该组合物的制造方法 |
CN107879951A (zh) * | 2017-10-20 | 2018-04-06 | 万华化学集团股份有限公司 | 一种浅色改性异氰酸酯混合物及其制备方法 |
CN109641834A (zh) * | 2016-09-08 | 2019-04-16 | 科思创德国股份有限公司 | 用于制备液体的、储存稳定的、具有碳二亚胺-和/或脲酮亚胺基团和具有低色数的有机异氰酸酯的方法 |
WO2019104888A1 (zh) * | 2017-11-30 | 2019-06-06 | 万华化学集团股份有限公司 | 亚胺型季铵盐催化剂、其制备方法及其用于制备多异氰酸酯组合物 |
CN112574068A (zh) * | 2020-11-17 | 2021-03-30 | 万华化学(宁波)有限公司 | 一种低色号高稳定性碳化二亚胺改性异氰酸酯的制备方法 |
CN115650880A (zh) * | 2022-11-03 | 2023-01-31 | 万华化学(宁波)有限公司 | 一种过保质期mdi的回收处理方法及由其制备碳化二亚胺改性异氰酸酯的方法和产品 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54100345A (en) * | 1978-01-25 | 1979-08-08 | Nippon Polyurethan Kogyo Kk | Partial carbodiimide formation of isocyanate group in organic isocyanate |
US4344855A (en) * | 1975-11-21 | 1982-08-17 | Bayer Aktiengesellschaft | Process for the production of polyisocyanates which contain carbodiimide groups and which are stable in storage |
EP0515933A2 (de) * | 1991-05-28 | 1992-12-02 | Bayer Ag | Verfahren zur Herstellung flüssiger, lagerstabiler Carbodiimid- und/oder Uretonimingruppen aufweisender organischer Isocyanate und ihre Verwendung zur Herstellung von Polyurethankunststoffen |
CN1789241A (zh) * | 2005-12-12 | 2006-06-21 | 拜尔材料科学股份公司 | 液态、储存稳定、色指数低、含有碳二亚胺和/或脲酮亚胺基团的有机异氰酸酯的制备方法 |
CN101356208A (zh) * | 2006-01-05 | 2009-01-28 | 拜尔材料科学股份公司 | 液态、储存稳定、含碳二亚胺和/或脲酮亚胺基团的有机异氰酸酯的制备方法 |
CN101553517A (zh) * | 2006-12-07 | 2009-10-07 | 拜尔材料科学股份公司 | 制备改性多异氰酸酯的方法 |
-
2012
- 2012-06-05 CN CN201210190576.XA patent/CN102718683B/zh active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4344855A (en) * | 1975-11-21 | 1982-08-17 | Bayer Aktiengesellschaft | Process for the production of polyisocyanates which contain carbodiimide groups and which are stable in storage |
JPS54100345A (en) * | 1978-01-25 | 1979-08-08 | Nippon Polyurethan Kogyo Kk | Partial carbodiimide formation of isocyanate group in organic isocyanate |
EP0515933A2 (de) * | 1991-05-28 | 1992-12-02 | Bayer Ag | Verfahren zur Herstellung flüssiger, lagerstabiler Carbodiimid- und/oder Uretonimingruppen aufweisender organischer Isocyanate und ihre Verwendung zur Herstellung von Polyurethankunststoffen |
CN1789241A (zh) * | 2005-12-12 | 2006-06-21 | 拜尔材料科学股份公司 | 液态、储存稳定、色指数低、含有碳二亚胺和/或脲酮亚胺基团的有机异氰酸酯的制备方法 |
CN101356208A (zh) * | 2006-01-05 | 2009-01-28 | 拜尔材料科学股份公司 | 液态、储存稳定、含碳二亚胺和/或脲酮亚胺基团的有机异氰酸酯的制备方法 |
CN101553517A (zh) * | 2006-12-07 | 2009-10-07 | 拜尔材料科学股份公司 | 制备改性多异氰酸酯的方法 |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104945585A (zh) * | 2014-03-31 | 2015-09-30 | 东曹株式会社 | 低温贮存稳定性多异氰酸酯组合物、及该组合物的制造方法 |
CN109641834B (zh) * | 2016-09-08 | 2021-09-10 | 科思创德国股份有限公司 | 用于制备具有碳二亚胺-和/或脲酮亚胺基团的有机异氰酸酯的方法 |
CN109641834A (zh) * | 2016-09-08 | 2019-04-16 | 科思创德国股份有限公司 | 用于制备液体的、储存稳定的、具有碳二亚胺-和/或脲酮亚胺基团和具有低色数的有机异氰酸酯的方法 |
JP2020536952A (ja) * | 2017-10-20 | 2020-12-17 | ワンファ ケミカル グループ カンパニー,リミテッド | 淡色変性イソシアネート混合物およびその調製方法 |
CN107879951B (zh) * | 2017-10-20 | 2020-01-31 | 万华化学集团股份有限公司 | 一种浅色改性异氰酸酯混合物及其制备方法 |
WO2019076099A1 (zh) | 2017-10-20 | 2019-04-25 | 万华化学集团股份有限公司 | 一种浅色改性异氰酸酯混合物及其制备方法 |
US11034651B2 (en) * | 2017-10-20 | 2021-06-15 | Wanhua Chemical Group Co., Ltd. | Light colored modified isocyanate mixture and preparation method thereof |
CN107879951A (zh) * | 2017-10-20 | 2018-04-06 | 万华化学集团股份有限公司 | 一种浅色改性异氰酸酯混合物及其制备方法 |
JP7060697B2 (ja) | 2017-10-20 | 2022-04-26 | ワンファ ケミカル グループ カンパニー,リミテッド | 淡色変性イソシアネート混合物およびその調製方法 |
WO2019104888A1 (zh) * | 2017-11-30 | 2019-06-06 | 万华化学集团股份有限公司 | 亚胺型季铵盐催化剂、其制备方法及其用于制备多异氰酸酯组合物 |
US11059772B2 (en) | 2017-11-30 | 2021-07-13 | Wanhua Chemical Group Co., Ltd. | Imine-type quaternary ammonium salt catalyst, preparation method thereof and use thereof for preparation of polyisocyanate composition |
CN112574068A (zh) * | 2020-11-17 | 2021-03-30 | 万华化学(宁波)有限公司 | 一种低色号高稳定性碳化二亚胺改性异氰酸酯的制备方法 |
CN115650880A (zh) * | 2022-11-03 | 2023-01-31 | 万华化学(宁波)有限公司 | 一种过保质期mdi的回收处理方法及由其制备碳化二亚胺改性异氰酸酯的方法和产品 |
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Free format text: CORRECT: APPLICANT; FROM: YANTAI WANHUA POLYURETHANE CO., LTD. TO: WANHUA CHEMICAL GROUP CO., LTD. |
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C53 | Correction of patent of invention or patent application | ||
CB02 | Change of applicant information |
Address after: 264002 Yantai, South Road, Shandong, No. 7 Applicant after: Wanhua Chemical Group Co.,Ltd. Applicant after: Wanhua chemical (Ningbo) Co.,Ltd. Address before: 264002 Yantai, South Road, Shandong, No. 7 Applicant before: Wanhua Chemical Group Co.,Ltd. Applicant before: NINGBO WANHUA POLYURETHANES Co.,Ltd. |
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C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
CP02 | Change in the address of a patent holder | ||
CP02 | Change in the address of a patent holder |
Address after: 264006 17 Tianshan Road, Yantai economic and Technological Development Zone, Shandong Co-patentee after: Wanhua chemical (Ningbo) Co.,Ltd. Patentee after: Wanhua Chemical Group Co.,Ltd. Address before: 264002 No. 7 happy South Road, Shandong, Yantai Co-patentee before: Wanhua chemical (Ningbo) Co.,Ltd. Patentee before: Wanhua Chemical Group Co.,Ltd. |
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PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: The invention relates to a method for preparing low color number isocyanate and isocyanate prepared from it Effective date of registration: 20211123 Granted publication date: 20140806 Pledgee: Bank of China Limited by Share Ltd. Yantai branch Pledgor: Wanhua Chemical Group Co.,Ltd. Registration number: Y2021980013026 |
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PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20220622 Granted publication date: 20140806 Pledgee: Bank of China Limited by Share Ltd. Yantai branch Pledgor: Wanhua Chemical Group Co.,Ltd. Registration number: Y2021980013026 |