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公开(公告)号：EP3927659B1
公开(公告)日：2024-10-16
申请号：EP20705976.7
申请日：2020-02-20
IPC分类号： C01B25/222 , C01B25/28 , C01B25/46 , C07D251/56
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公开(公告)号：EP1631555B1
公开(公告)日：2009-04-29
申请号：EP04748631.1
申请日：2004-06-03
申请人： DSM IP Assets B.V.
IPC分类号： C07D251/56 , B01J2/22
CPC分类号： C07D251/56 , B01J2/22 , Y10T428/2982
摘要： The invention relates to a granular melamine, wherein the D99 lies between 300µm and 1800µm. The invention further relates to a process for compacting melamine comprising: - a roll pressing step wherein a melamine powder is pressed into compacted melamine; - a crushing step wherein the compacted melamine is crushed into granular melamine; - a coarse screening step to which the granular melamine is supplied, wherein particles greater than a desired particle size are separated from the granular melamine, wherein the coarse screening step is carried out in such a fashion that the granular melamine has a D99 lying between 300µm and 1800µm.
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公开(公告)号：EP1515957A1
公开(公告)日：2005-03-23
申请号：EP03761570.5
申请日：2003-06-26
IPC分类号： C07D251/60 , C07D251/56 , B01J4/00 , B01J8/00
CPC分类号： B01J19/1806 , B01J19/0013 , B01J2219/00121 , B01J2219/00252 , C07D251/56 , C07D251/60
摘要： Treatment of the pyrolysis product of urea to melamine, in one or more expansion and cooling steps to separate the offgas and recover the melamine in solution/suspension, carried out by expanding the product under a liquid seal, to prevent the melamine crystals in formation from adhering to the internal walls of the equipment.
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公开(公告)号：EP1062211A1
公开(公告)日：2000-12-27
申请号：EP99912360.7
申请日：1999-03-10
IPC分类号： C07D251/56 , C09D5/18 , C08K5/3492
CPC分类号： C07D251/56 , C01B25/42 , C08K5/34928 , C09D5/185
摘要： This invention relates to a novel process for the preparation of condensed melamine phosphates, and to melamine pyrophosphate prepared by this process having improved thermal stability as a flame retardant.
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5.发明公开Process for manufacture of melamine pyrophosphate 失效Verfahren zur Herstellung von Melaminpyrophosphat。
公开(公告)号：EP0413376A1
公开(公告)日：1991-02-20
申请号：EP90201969.4
申请日：1990-07-20
申请人： Akzo Nobel N.V.
IPC分类号： C07D251/56 , C07F9/02
CPC分类号： C07D251/70 , C01B25/42
摘要： Melamine pyrophosphate is made by the direct reaction of pyrophosphoric acid and melamine in an aqueous reaction medium at a temperature of from about 0°C to about 60°C, preferably from about 0°C to about 20°C.
摘要翻译： 焦磷酸三聚氰胺通过焦磷酸和三聚氰胺在水性反应介质中在约0℃至约60℃，优选约0℃至约20℃的温度下直接反应制备。
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公开(公告)号：EP3927659A1
公开(公告)日：2021-12-29
申请号：EP20705976.7
申请日：2020-02-20
IPC分类号： C01B25/222 , C01B25/28 , C01B25/46 , C07D251/56
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公开(公告)号：EP1631555A1
公开(公告)日：2006-03-08
申请号：EP04748631.1
申请日：2004-06-03
申请人： DSM IP Assets B.V.
IPC分类号： C07D251/56 , B01J2/22
CPC分类号： C07D251/56 , B01J2/22 , Y10T428/2982
摘要： The invention relates to a granular melamine, wherein the D99 lies between 300µm and 1800µm. The invention further relates to a process for compacting melamine comprising: - a roll pressing step wherein a melamine powder is pressed into compacted melamine; - a crushing step wherein the compacted melamine is crushed into granular melamine; - a coarse screening step to which the granular melamine is supplied, wherein particles greater than a desired particle size are separated from the granular melamine, wherein the coarse screening step is carried out in such a fashion that the granular melamine has a D99 lying between 300µm and 1800µm.
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公开(公告)号：EP1583931A1
公开(公告)日：2005-10-12
申请号：EP03782984.3
申请日：2003-12-17
申请人： DSM IP Assets B.V.
IPC分类号： F28D21/00 , C07D251/56
CPC分类号： F23L15/04 , F28D21/001 , Y02E20/348
摘要： The invention relates to a process for the extraction of energy from flue gases of a furnace which is operated with a fuel (202) and which is used in a process for the production of melamine, the process comprising a first heat exchange step (210) in which the flue gases are heat exchanged with a first process stream (212, 232), and in which the flue gases are heat exchanged with a second process stream (230, 232) in a second heat exchange step (228). The invention also relates to an apparatus for supplying heat in a process for the preparation of melamine, and to a process for optimizing an existing apparatus.
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公开(公告)号：EP1442031A2
公开(公告)日：2004-08-04
申请号：EP02772026.7
申请日：2002-08-22
IPC分类号： C07D295/02 , C07D251/54 , C07D251/56 , C07C277/00 , C09K21/04 , C08K5/49 , C08K3/32
CPC分类号： C07D295/023 , C07C277/00 , C07D251/54 , C07D251/56 , C08K5/521 , C09K21/12 , C07C279/02
摘要： The invention relates to a simple, cost-effective method for producing polyphosphates of organic bases. According to said method, a mixture of phosphorus pentaoxide and at least one organic nitrogen base is reacted with at least one compound, which in the prevailing conditions releases water as it decomposes, in such a molar ratio that during the decomposition of the water-releasing compound a maximum of essentially 2 mols water per mol of phosphorus pentaoxide is produced. Polyphosphates produced in such a way are particularly suitable for use as flame-retardant agents for plastics.
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公开(公告)号：EP1062211B1
公开(公告)日：2003-10-29
申请号：EP99912360.7
申请日：1999-03-10
IPC分类号： C07D251/56 , C09D5/18 , C08K5/3492
CPC分类号： C07D251/56 , C01B25/42 , C08K5/34928 , C09D5/185
摘要： This invention relates to a novel process for the preparation of condensed melamine phosphates, and to melamine pyrophosphate prepared by this process having improved thermal stability as a flame retardant.
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