公开(公告)号：US5543444A

公开(公告)日：1996-08-06

申请号：US287937

申请日：1994-08-09

申请人： Tsuyoshi Kobayashi ,  Ichiro Sakon ,  Shigeo Nakashima ,  Sachiko Numa ,  Yoshikazu Inao

发明人： Tsuyoshi Kobayashi ,  Ichiro Sakon ,  Shigeo Nakashima ,  Sachiko Numa ,  Yoshikazu Inao

IPC分类号： C08K3/02 ,  C01B25/00 ,  C08K9/02 ,  C08K9/04 ,  C08K9/08 ,  C08L101/00 ,  C09C3/00 ,  C09K21/04 ,  C08K3/32 ,  B32B9/04 ,  C08K3/20

CPC分类号： C01B25/006 ,  C08K9/02 ,  C08K9/08 ,  Y10T428/2998

摘要： Disclosed is a red phosphorus flame retardant comprising a fine red phosphorus powder subjected to a surface modification treatment, said fine red phosphorus powder consisting of spherical red phosphorus particles and/or agglomerates thereof directly obtained by the thermal conversion of white phosphorus in the presence of a dispersant and has an average particle size of 10 .mu.m or smaller and of which at least 80% by weight is accounted for by particles having particle sizes of 20 .mu.m or smaller, said flame retardant having an average particle size of 15 .mu.m or smaller, with the particles having particle sizes of 35 .mu.m or smaller accounting for at least 80% by weight of the flame retardant; and a nonflammable resinous composition composed of a synthetic resin and the red phosphorus flame retardant.

摘要翻译： 公开了一种红磷阻燃剂，其包含进行表面改性处理的细红磷粉末，所述的细红磷粉末由球形红磷颗粒和/或其附聚物组成，其通过白色磷的热转化直接获得 分散剂，其平均粒径为10μm以下，其中至少80重量％由粒径20μm以下的粒子构成，所述阻燃剂的平均粒径为15μm，或 较小，粒径为35μm或更小的颗粒占阻燃剂的至少80重量％; 以及由合成树脂和红磷阻燃剂组成的不可燃树脂组合物。

公开(公告)号：US5041490A

公开(公告)日：1991-08-20

申请号：US437762

申请日：1989-11-15

申请人： Ichiro Sakon ,  Masao Sekiguchi ,  Atsushi Kanayama

发明人： Ichiro Sakon ,  Masao Sekiguchi ,  Atsushi Kanayama

IPC分类号： C01B25/00 ,  C08K9/02 ,  C08K9/08 ,  C09K21/04 ,  C09K21/12

CPC分类号： C09K21/12 ,  C01B25/006 ,  C08K9/02 ,  C08K9/08 ,  C09K21/04

摘要： Red phosphorus flame retardants for synthetic resin are produced by a method comprising the steps of heating yellow phosphorus at temperatures of 250.degree. to 600.degree. C. to effect a partial conversion of yellow phosphorus to red phosphorus; removing unconverted yellow phosphorus; and coating particles of the resulting red phosphorus with at least one of thermosetting resin and metal hydroxide. The thus obtained red phosphorus flame retardants are very stable because of significantly improved heat resistance, water resistance and weatherability and thus can provide nonflammable resinous compositions which can be used for long period of time. The nonflammable composition consists essentially of 100 parts by weight of polyolefine resin, 20 to 200 parts by weight of hydrated inorganic filler and 0.1 to 30 parts by weight of the coated red phosphorus flame retardant.

公开(公告)号：US4879067A

公开(公告)日：1989-11-07

申请号：US40522

申请日：1987-04-17

申请人： Ichiro Sakon ,  Masao Sekiguchi ,  Atsushi Kanayama

发明人： Ichiro Sakon ,  Masao Sekiguchi ,  Atsushi Kanayama

IPC分类号： C01B25/00 ,  C01B25/023 ,  C08K3/02 ,  C08K9/02

CPC分类号： C01B25/006 ,  C01B25/023 ,  C08K3/02 ,  C08K9/02 ,  Y10S260/24 ,  Y10T428/2998

摘要： A flame retardant comprising of spherical red phosphorus free of pulverized face which is directly produced in the form of fine powder by conversion of yellow phosphorus, without pulverizing process. The red phosphorus characterized by its surface state and shape entirely different from any prior pulverized red phosphorus has not only a high flame retarding ability, but also a superior combination of chemical and physical properties, particularly with regard to corrosion resistance, moisture resistance, mechanical strength and dielectric properties which make it highly valuable and useful as a flame retardant for various nonflammable resinous compositions used in electric articles including electronic parts, machines, automobiles and buildings. The flame retardant is desirably coated with thermosetting resin and/or hydroxide of aluminum and/or zinc, thereby greatly improved in its stability.

摘要翻译： 一种阻燃剂，其包含不含粉碎面的球形红磷，其通过黄磷转化而直接以细粉的形式生产，不经粉碎处理。 特征在于其表面状态和形状完全不同于任何现有粉碎的红磷的红磷不仅具有高阻燃能力，而且具有优异的化学和物理性能组合，特别是在耐腐蚀性，耐湿性，机械强度方面 和介电性能，其使得其作为用于包括电子部件，机器，汽车和建筑物的电动制品中的各种不可燃树脂组合物的阻燃剂是非常有价值和有用的。 阻燃剂理想地涂覆有热固性树脂和/或铝和/或锌的氢氧化物，从而大大提高其稳定性。

公开(公告)号：US5026757A

公开(公告)日：1991-06-25

申请号：US385912

申请日：1989-07-25

申请人： Ichiro Sakon ,  Masao Sekiguchi ,  Atsushi Kanayama

发明人： Ichiro Sakon ,  Masao Sekiguchi ,  Atsushi Kanayama

IPC分类号： C01B25/00 ,  C01B25/023 ,  C08K3/02 ,  C08K9/02

CPC分类号： C01B25/006 ,  C01B25/023 ,  C08K3/02 ,  C08K9/02 ,  Y10S260/24 ,  Y10T428/2998

摘要： A flame retardant comprising of spherical red phosphorus free of pulverized face which is directly produced in the form of fine powder by conversion of yellow phosphorus, without pulverizing process. The red phosphorus characterized by its surface state and shape entirely different from any prior pulverized red phosphorus has not only a high flame retarding ability, but also a superior combination of chemical and physical properties, particularly with regard to corrosion resistance, moisture resistance, mechanical strength and dielectric properties which make it highly valuable and useful as a flame retardant for various nonflammable resinous compositions used in electric articles including electronic parts, machines, automobiles and buildings. The flame retardant is desirably coated with thermosetting rein and/or hydroxide of aluminum and/or zinc, thereby greatly improved in its stability.