CN103922969B - 一种制备颜色稳定的1,6-己二异氰酸酯的方法 - Google Patents
一种制备颜色稳定的1,6-己二异氰酸酯的方法 Download PDFInfo
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- CN103922969B CN103922969B CN201410142958.4A CN201410142958A CN103922969B CN 103922969 B CN103922969 B CN 103922969B CN 201410142958 A CN201410142958 A CN 201410142958A CN 103922969 B CN103922969 B CN 103922969B
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序号 | 回流比 | 负荷kg/h | 低沸点含量mg/kg |
1 | 3:1 | 800 | 45 |
2 | 6:1 | 600 | 20 |
3 | 10:1 | 400 | 10 |
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CN201410142958.4A CN103922969B (zh) | 2014-04-10 | 2014-04-10 | 一种制备颜色稳定的1,6-己二异氰酸酯的方法 |
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CN103922969A CN103922969A (zh) | 2014-07-16 |
CN103922969B true CN103922969B (zh) | 2016-01-20 |
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Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
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CN113072512B (zh) * | 2020-01-06 | 2022-11-08 | 万华化学集团股份有限公司 | 一种聚异氰酸酯的制备方法 |
EP3939960A1 (de) | 2020-07-15 | 2022-01-19 | Covestro Deutschland AG | Verfahren zur gewinnung von diaminen aus wässrigen mischungen |
CN111848455B (zh) * | 2020-08-17 | 2023-05-30 | 万华化学集团股份有限公司 | 一种降低异氰酸酯产品色度的方法和一种异氰酸酯精馏塔气相采出流量的自动控制方法 |
EP4151618A1 (en) | 2021-09-20 | 2023-03-22 | Covestro Deutschland AG | Obtaining aliphatic amines from compositions |
CN114149345B (zh) * | 2021-12-09 | 2023-04-21 | 万华化学集团股份有限公司 | 一种制备异氰酸酯的方法 |
CN115716906A (zh) * | 2022-12-07 | 2023-02-28 | 万华化学集团股份有限公司 | 一种六亚甲基二异氰酸酯组合物及其制备方法和应用 |
CN115960332A (zh) * | 2022-12-07 | 2023-04-14 | 万华化学集团股份有限公司 | 一种六亚甲基二异氰酸酯组合物及其制备方法和应用 |
Citations (8)
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CN1356980A (zh) * | 1999-06-23 | 2002-07-03 | 巴斯福股份公司 | 浅色异氰酸酯、其制备方法及其用途 |
CN1471505A (zh) * | 2000-10-26 | 2004-01-28 | 纳幕尔杜邦公司 | 从六亚甲基二胺(hmd)、氨基己腈和可极谱还原杂质(pri)的混合物中回收低pri的hmd |
CN1729167A (zh) * | 2002-12-20 | 2006-02-01 | 巴斯福股份公司 | 生产异氰酸酯的方法 |
EP1808430A1 (de) * | 2006-01-17 | 2007-07-18 | Bayer MaterialScience AG | Verfahren zur Herstellung heller Isocyanate |
CN101018763A (zh) * | 2004-09-10 | 2007-08-15 | 因维斯塔技术有限公司 | 从包含六亚甲基二胺、6-氨基己腈和四氢氮杂的混合物中分离6-氨基己腈和六亚甲基二胺 |
CN101440046A (zh) * | 2007-11-14 | 2009-05-27 | 拜尔材料科学股份公司 | 浅色异氰酸酯的制备 |
WO2010060773A1 (en) * | 2008-11-26 | 2010-06-03 | Huntsman International Llc | Process for manufacturing isocyanates |
CN102803200A (zh) * | 2009-04-24 | 2012-11-28 | 巴斯夫欧洲公司 | 制备颜色稳定的mda和mdi的方法 |
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2014
- 2014-04-10 CN CN201410142958.4A patent/CN103922969B/zh active Active
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
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CN1356980A (zh) * | 1999-06-23 | 2002-07-03 | 巴斯福股份公司 | 浅色异氰酸酯、其制备方法及其用途 |
CN1471505A (zh) * | 2000-10-26 | 2004-01-28 | 纳幕尔杜邦公司 | 从六亚甲基二胺(hmd)、氨基己腈和可极谱还原杂质(pri)的混合物中回收低pri的hmd |
CN1729167A (zh) * | 2002-12-20 | 2006-02-01 | 巴斯福股份公司 | 生产异氰酸酯的方法 |
CN101018763A (zh) * | 2004-09-10 | 2007-08-15 | 因维斯塔技术有限公司 | 从包含六亚甲基二胺、6-氨基己腈和四氢氮杂的混合物中分离6-氨基己腈和六亚甲基二胺 |
EP1808430A1 (de) * | 2006-01-17 | 2007-07-18 | Bayer MaterialScience AG | Verfahren zur Herstellung heller Isocyanate |
CN101440046A (zh) * | 2007-11-14 | 2009-05-27 | 拜尔材料科学股份公司 | 浅色异氰酸酯的制备 |
WO2010060773A1 (en) * | 2008-11-26 | 2010-06-03 | Huntsman International Llc | Process for manufacturing isocyanates |
CN102803200A (zh) * | 2009-04-24 | 2012-11-28 | 巴斯夫欧洲公司 | 制备颜色稳定的mda和mdi的方法 |
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Address after: 264002 Yantai economic and Technological Development Zone, Shandong, Tian Shan Road, No. 17 Patentee after: Wanhua Chemical Group Co.,Ltd. Patentee after: Wanhua chemical (Ningbo) Co.,Ltd. Address before: 264002 Yantai City, Shandong province Zhifu District No. 7 Patentee before: Wanhua Chemical Group Co.,Ltd. Patentee before: Wanhua chemical (Ningbo) Co.,Ltd. |
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Denomination of invention: A method for preparing 1,6-hexodiisocyanate with stable color Effective date of registration: 20211123 Granted publication date: 20160120 Pledgee: Bank of China Limited by Share Ltd. Yantai branch Pledgor: Wanhua Chemical Group Co.,Ltd. Registration number: Y2021980013026 |
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