To provide a non-halogen-based flame retardant for obtaining a flame-retardant product having high flame retardancy and a good appearance and a flame-retardant product comprising the same.
An organic phosphorus-based compound which satisfies the following requirements (i) to (viii) and is represented by the following formula (1):
(i) the organic purity should be not lower than 98 %;
(ii) the solubility in 20°C water should be not higher than 0.1 g/100 g of water;
(iii) the total halogen component content should be not higher than 1,000 ppm;
(iv) the total volatile organic matter content should be not higher than 800 ppm;
(v) the Δ pH value should be not larger than 1.0;
(vi) the volume standard median diameter should be not larger than 30 µm;
(vii) the maximum particle diameter should be not larger than 200 µm; and
(viii) the standard deviation represented by the following formula (6) should be not larger than 20 µm. Standarddeviation=d84%+d16%/2
d84 %: particle diameter at a point where the cumulative curve becomes 84 % (µm)
d16 %: particle diameter at a point where the cumulative curve becomes 16 % (µm)
(In the above formula, R2 and R5 may be the same or different and are each a phenyl group which may have a substituent, naphthyl group which may have a substituent, anthryl group which may have a substituent, or branched or linear alkyl group having 1 to 4 carbon atoms which may have an aromatic substituent. R1, R3, R4 and R6 may be the same or different and are each a hydrogen atom, branched or linear alkyl group having 1 to 4 carbon atoms, phenyl group which may have a substituent, naphthyl group which may have a substituent, or anthryl group which may have a substituent.)
提供一种非卤素基阻燃剂,用于获得具有高阻燃性和良好外观的阻燃产品,以及由其构成的阻燃产品。
满足以下要求(i)至(viii)并由下式(1)表示的有机
磷基化合物:
(i) 有机纯度不低于 98%;
(ii) 在 20°C
水中的溶解度不高于 0.1 克/100 克
水;
(iii) 卤素成分总含量应不高于 1,000 ppm;
(iv) 總揮發性有機化合物含量不得高於百萬分之 800;
(v) Δ pH 值不得大于 1.0;
(vi) 体积标准中值直径应不大于 30 微米;
(vii) 最大颗粒直径应不大于 200 微米;以及
(viii) 用下式(6)表示的标准偏差应不大于 20 微米。Standarddeviation=d84%+d16%/2
d84 %:累积曲线变为 84 % 时的颗粒直径(微米)
d16 %:累积曲线变为 16 % 时的颗粒直径(微米)
(在上式中,R2 和 R5 可以相同或不同,它们分别是苯基(可带有取代基)、
萘基(可带有取代基)、
蒽基(可带有取代基)或具有 1 至 4 个碳原子的支链或直链烷基(可带有芳香取代基)。R1、R3、R4 和 R6 可以相同或不同,并且各自为氢原子、具有 1 至 4 个碳原子的支链或直链烷基、可能具有取代基的苯基、可能具有取代基的
萘基或可能具有取代基的
蒽基)。