公开(公告)号：US5599626A

公开(公告)日：1997-02-04

申请号：US207051

申请日：1994-03-08

申请人： Chikashi Fukumura ,  Masuo Iwata ,  Noriaki Narita ,  Kouji Inoue ,  Ryoji Takahashi

发明人： Chikashi Fukumura ,  Masuo Iwata ,  Noriaki Narita ,  Kouji Inoue ,  Ryoji Takahashi

IPC分类号： C01B25/40 ,  C08K9/04 ,  B32B5/16

CPC分类号： C08K9/04 ,  Y10S428/92 ,  Y10T428/2991

摘要： A melamine-coated ammonium polyphosphate exhibiting properties of having no hygroscopicity, being difficultly soluble in water and difficultly susceptive of hydrolysis is provided and further a process for producing a melamine-coated ammonium polyphosphate having the above properties and also being powdery even when it is not ground is provided, the above powdery, melamine-coated ammonium polyphosphate being characterized in that melamine is added and/or adhered onto the particle surface of a powdery, ammonium polyphosphate expressed by the formula ##STR1## wherein n represents an integer of 20 or more, and a process for producing a powdery, melamine-coated ammonium polyphosphate being characterized in that melamine is sublimated and added and/or adhered onto the particle surface of a powdery ammonium polyphosphate.

摘要翻译： 提供具有无吸湿性，易溶于水和难以易水解的三聚氰胺涂覆的多磷酸铵，并且还提供了具有上述性质的三聚氰胺涂覆的多磷酸铵的制备方法，即使不是，也是粉末状 提供了上述粉末状三聚氰胺涂覆的多磷酸铵，其特征在于将三聚氰胺加入和/或粘附在粉末状多磷酸铵的颗粒表面上，其由下式表示：其中n表示20或更大的整数 和三聚氰胺涂覆的多磷酸铵的制造方法，其特征在于将三聚氰胺升华并添加和/或附着在多磷酸铵粉末的颗粒表面上。

公开(公告)号：US5534291A

公开(公告)日：1996-07-09

申请号：US406596

申请日：1995-03-20

申请人： Chikashi Fukumura ,  Masuo Iwata ,  Noriaki Narita ,  Kouji Inoue ,  Ryoji Takahashi

发明人： Chikashi Fukumura ,  Masuo Iwata ,  Noriaki Narita ,  Kouji Inoue ,  Ryoji Takahashi

IPC分类号： C01B25/40 ,  C08K9/04 ,  B05D7/00

CPC分类号： C08K9/04 ,  Y10S428/92 ,  Y10T428/2991

摘要： A process for producing a powdery ammonium polyphosphate which is uniformly coated with melamine is provided wherein melamine is sublimated and added and/or adhered onto the particle surface of a powdery ammonium polyphosphate.

摘要翻译： 提供均匀地涂覆有三聚氰胺的粉末状多磷酸铵的制造方法，其中将三聚氰胺升华并添加和/或粘附到多磷酸铵粉末的颗粒表面上。

公开(公告)号：US5213783A

公开(公告)日：1993-05-25

申请号：US806239

申请日：1991-12-12

申请人： Chikashi Fukumura ,  Kouji Inoue ,  Masuo Iwata ,  Noriaki Narita ,  Masaya Tanaka

发明人： Chikashi Fukumura ,  Kouji Inoue ,  Masuo Iwata ,  Noriaki Narita ,  Masaya Tanaka

IPC分类号： C01B25/40 ,  C08K3/32

CPC分类号： C01B25/405 ,  C08K3/32

摘要： Finely divided particles of II type ammonium polyphosphate (APP) which, when added to polyolefin resins, etc., afford products having a small reduction in the mechanical characteristics, a reduced particle diameter and an increased specific surface area and nevertheless, having bleed resistance and flame retardancy similar to those of conventional products, and a process for producing the particles are provided,the particles being characterized in that 80% by weight or more thereof have a particle diameter of 10 .mu.m or less and 5% aqueous solution thereof dissolved in 80.degree. C. water has 500 cps or more, and the process being a process for producing the particles by reacting ammonium phosphate with P.sub.2 O.sub.5, each in a nearly equimolar quantity, in a NH.sub.3 gas atmosphere and at an elevated temperature, comprisinga first reaction step carried out in N.sub.2 gas atmosphere without feeding NH.sub.3 gas, a second reaction step of instantaneously feeding NH.sub.3 gas or a NH.sub.3 -generating substance when hot, in 3 to 90% of the stoichiometrical quantity, and a third reaction step of slowly adding NH.sub.3 gas in a quantity or more of the remainder of the stoichiometric quantity and aging therewith, to crystallize the resulting II type APP.

公开(公告)号：US4610862A

公开(公告)日：1986-09-09

申请号：US710415

申请日：1985-03-11

申请人： Taizo Kajitani ,  Shigeo Fujii ,  Tadao Sato ,  Ikuo Yonehara ,  Chikashi Fukumura ,  Kenji Harita

发明人： Taizo Kajitani ,  Shigeo Fujii ,  Tadao Sato ,  Ikuo Yonehara ,  Chikashi Fukumura ,  Kenji Harita

IPC分类号： C01B25/28

CPC分类号： C01B25/28

摘要： A process for producing purified diammonium phosphate (abbreviated to DAP) directly from wet process phosphoric acid with a high yield is provided, which process comprises reacting wet process phosphoric acid with NH.sub.3 at 50.degree..about.80.degree. C. while keeping the molar ratio of NH.sub.3 /H.sub.3 PO.sub.4 at 1.65-1.90; separating the resulting slurry containing DAP crystals and an insoluble sludge into a slurry containing the former and a slurry containing the latter; treating the former slurry in a conventional manner to recover DAP; while treating the latter slurry by heating it to 60.degree..about.95.degree. C. to dissolve DAP contained therein, removing the sludge by centrifugal separation and concentrating the filtrate to recover DAP; and combining the two portions of DAP.

摘要翻译： 提供了一种从湿法磷酸直接生产纯度高的磷酸二铵（缩写为DAP）的方法，该方法包括使湿法磷酸与NH3在50℃下反应80℃，同时保持NH 3 / H 3 PO 4，1.65-1.90; 将含有DAP晶体和不溶性污泥的所得浆料分离成含有前者的浆料和含有后者的浆料; 以常规方式处理前浆料以回收DAP; 同时通过将其加热至60℃至60℃，以溶解其中所含的DAP来处理后者浆料，通过离心分离除去污泥并浓缩滤液以回收DAP; 并结合DAP的两部分。

公开(公告)号：US4610853A

公开(公告)日：1986-09-09

申请号：US709923

申请日：1985-03-08

申请人： Taizo Kajitani ,  Shigeo Fujii ,  Tadao Sato ,  Ikuo Yonehara ,  Chikashi Fukumura ,  Kenji Harita

发明人： Taizo Kajitani ,  Shigeo Fujii ,  Tadao Sato ,  Ikuo Yonehara ,  Chikashi Fukumura ,  Kenji Harita

IPC分类号： C01B25/28

CPC分类号： C01B25/28

摘要： A process for producing purified monoammonium phosphate (abbreviated to MAP) directly from wet process phosphoric acid with a high yield is provided, which process comprises reacting wet process phosphoric acid with NH.sub.3 at 50.degree..about.80.degree. C. while keeping the molar ratio of NH.sub.3 /H.sub.3 PO.sub.4 at 0.9.about.1.35; separating the resulting slurry containing MAP crystals and an insoluble sludge into a slurry containing the former and a slurry containing the latter; treating the former slurry in a conventional manner to recover MAP; while treating the latter slurry by heating it to 60.degree..about.95.degree. C. to dissolve MAP contained therein, removing the sludge by centrifugal separation and concentrating the filtrate to recover MAP; and combining the two portions of MAP.

摘要翻译： 提供了一种以高产率从湿法磷酸直接生产纯化磷酸二氢铵（简称MAP）的方法，该方法包括使湿法磷酸与NH3在50℃下反应80℃，同时保持NH 3的摩尔比 / H3PO4在0.9差异1.35; 将含有MAP晶体和不溶性污泥的所得浆料分离成含有前者的浆料和含有后者的浆料; 以常规方式处理前浆料以回收MAP; 同时通过将其加热至60℃，将其加热至60℃，以溶解其中所含的MAP，通过离心分离除去污泥并浓缩滤液以回收MAP; 并组合MAP的两部分。