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    • 4. 发明授权
    • Melamine polymetaphosphate and process for its production
    • 三聚氰胺聚偏磷酸钠及其生产工艺
    • US6008349A
    • 1999-12-28
    • US77882
    • 1998-06-10
    • Keitaro SuzukiKouji ShishidoMasuo Shindo
    • Keitaro SuzukiKouji ShishidoMasuo Shindo
    • C08G79/02C08K5/3492C08K5/529C07D251/70C07F9/22
    • C08K5/34928C08G79/02C08K5/529
    • A melamine polymetaphosphate having a solubility of from 0.01 to 0.10 g/100 ml in water at 25.degree. C., a pH of from 2.5 to 4.5 in the form of a 10 wt % aqueous slurry at 25.degree. C. and a melamine content of from 1.0 to 1.1 mol per mol of phosphorus atom.A process for producing such a melamine polymetaphosphate, which comprises the following steps (a) and (b):(a) a step of mixing melamine, urea and an aqueous orthophosphoric acid solution containing at least 40 wt % of orthophosphoric acid, in such a ratio that melamine is from 1.0 to 1.5 mol per mol of orthophosphoric acid and urea is from 0.1 to 1.5 mol per mol of orthophosphoric acid, at a temperature of from 0 to 140.degree. C., to form a reaction mixture, and stirring the reaction mixture at a temperature of from 0 to 140.degree. C., while removing water, to obtain a powdery product of a double salt of orthophosphoric acid with melamine and urea; and(b) a step of calcining the powdery product obtained in step (a) at a temperature of from 240 to 340.degree. C. for from 0.1 to 30 hours, while preventing agglomeration, to obtain a melamine polymetaphosphate.
    • PCT No.PCT / JP97 / 01712 Sec。 371日期:1998年6月10日 102(e)日期1998年6月10日PCT提交1997年5月21日PCT公布。 WO97 / 44377 PCT公开号 日期1997年11月27日在25℃下在水中溶解度为0.01〜0.10g / 100ml的三聚氰胺聚偏磷酸钠,25℃下10重量%含水浆液形式的2.5〜4.5的pH值。 三聚氰胺含量为每摩尔磷原子1.0-1.1摩尔。 一种生产这种三聚氰胺聚偏磷酸盐的方法,其包括以下步骤(a)和(b):(a)将三聚氰胺,尿素和含有至少40重量%正磷酸的正磷酸水溶液混合在一起的步骤 相对于每摩尔正磷酸和尿素,三聚氰胺为1.0〜1.5摩尔/摩尔正磷酸为0.1〜1.5摩尔,在0〜140℃的温度下形成反应混合物,搅拌 反应混合物在0至140℃的温度下,同时除去水,得到正磷酸的双重盐与三聚氰胺和尿素的粉末状产物; 和(b)在240〜340℃的温度下煅烧步骤(a)中得到的粉末状产物0.1〜30小时,同时防止凝聚,得到三聚氰胺聚偏磷酸酯的工序。
    • 5. 发明授权
    • Flame retardant for halogen-containing vinyl resins
    • 含卤乙烯基树脂的阻燃剂
    • US5190700A
    • 1993-03-02
    • US574606
    • 1990-08-29
    • Yoshitane WatanabeKeitaro SuzukiKouji ShishidoMasayuki TeranishiMasuo Shindo
    • Yoshitane WatanabeKeitaro SuzukiKouji ShishidoMasayuki TeranishiMasuo Shindo
    • C08K3/16C08K3/22C08K13/02
    • C08K3/2279C08K13/02C08K3/16
    • The present invention provides a power flame retardant for a halogen-containing vinyl resin, which comprises the following Components A, B and C. (A) 5 to 30 parts by weight of at least one of alkali metal compound of lithium, sodium and potassium calculated as the formula M.sub.2 O where M is an alkali metal; (B) 0.2 to 10 parts by weight of a perchloric acid radical in the form of the acid or a salt or amine thereof, calculated as perchloric acid radical; and (C) 1 to 50 parts by weight of a hydrophobic dispersing agent having a boiling point or a decomposition temperature of 200.degree. C. or higher. All the parts by weight are based on 100 parts by weight of antimony pentoxide (Sb.sub.2 O.sub.5). The flame retardant of the present invention does not impair transparency of the halogen-containing vinyl resin, and also does not worsen various physical properties such as thermal stability and weathering resistance. The invention also provides (1) flame retardant halogen containing resins and (2) a process for preparing the powdered flame retardant.
    • 本发明提供含卤乙烯基树脂的电力阻燃剂,其包含以下组分A,B和C.(A)5至30重量份的锂,钠和钾的碱金属化合物 按公式M2O计算,其中M为碱金属; (B)0.2至10重量份以酸或其盐或胺形式的高氯酸基团,其计为高氯酸根; 和(C)1〜50重量份的沸点或分解温度为200℃以上的疏水性分散剂。 所有重量份均基于100重量份的五氧化二锑(Sb 2 O 5)。 本发明的阻燃剂不会损害含卤乙烯基树脂的透明性,也不会使各种物理性质如热稳定性和耐候性恶化。 本发明还提供(1)阻燃卤素树脂和(2)制备阻燃剂的方法。