公开(公告)号：US09493353B2

公开(公告)日：2016-11-15

申请号：US14652797

申请日：2014-02-14

Applicant: ADEKA CORPORATION

Inventor： Genta Harada ,  Yutaka Yonezawa ,  Michio Nakamura ,  Yuri Okamoto ,  Kohei Omori

IPC: C07D251/14 ,  C07D251/42 ,  C07D251/48 ,  C07D251/54 ,  C07F9/6521 ,  C01B25/42 ,  C07D295/02 ,  C07F9/6509

CPC classification number: C01B25/42 ,  C07D251/54 ,  C07D295/02 ,  C07F9/6509

Abstract: A process for producing a pyrophosphate, particularly melamine pyrophosphate useful as a flame retardant, efficiently in high yield is provided. The process includes firing an orthophosphate, preferably melamine orthophosphate, in the presence of a silicone oil, preferably methylphenyl silicone oil preferably at 120° to 350° C. Examples of useful firing equipment include a hot air dryer, a kneader, a Henschel mixture, a fluidized bed dryer, a rotary kiln, a paddle dryer, an extruder, a vibrating dryer, a far-infrared conveyor furnace, and a microwave firing furnace.

Abstract translation: 提供了以高产率有效地生产焦磷酸盐，特别是可用作阻燃剂的焦磷酸三聚氰胺的方法。 该方法包括在硅油，优选甲基苯基硅油存在下，优选在120-350℃下焙烧正磷酸盐，优选正磷酸三聚氰胺。有用的焙烧设备的实例包括热空气干燥器，捏合机，亨舍尔混合物， 流化床干燥机，回转窑，桨式干燥机，挤出机，振动干燥机，远红外传送炉和微波烧制炉。