A method for purifying a bromine compound of formula (1):
in which Ar1 and Ar2 are each independently a C6-10 aromatic hydrocarbon group; Y is a C1-2 alkylene group, a single bond, sulfone group or ketone group; R1 and R2 are each independently a C2-5 hydrocarbon group; m and n are each independently an integer of 1 to 4; p and q are each independently 2 or 4;
by depositing the bromine compound as solid particles from a crude solution containing the bromine compound wherein
(i) the crude solution is supplied into a slurry containing the particles of the bromine compound;
(ii) the concentration of the particles of the bromine compound in the slurry is maintained at 10 to 50 wt%;
(iii) the solvent contained in the slurry is a mixed solvent of a good solvent and a poor solvent for the bromine compound and the solubility of the bromine compound in the mixed solvent is maintained at 0.1 to 5 g/100 g of solvent; and
(iv) the solid particles of the bromine compound are separated from the slurry.
一种提纯式(1)
溴化合物的方法:
其中 Ar1 和 Ar2 各自独立地为 C6-10
芳烃基;Y 为 C1-2 亚烷基、单键、砜基或酮基;R1 和 R2 各自独立地为 C2-5 烃基;m 和 n 各自独立地为 1 至 4 的整数;p 和 q 各自独立地为 2 或 4;
从含有
溴化合物的粗溶液中将
溴化合物沉积为固体颗粒,其中
(i) 将粗溶液加入含有
溴化合物颗粒的浆液中;
(ii) 浆液中
溴化合物颗粒的浓度保持在 10 至 50 wt%;
(iii)浆液中所含的溶剂是
溴化合物的良好溶剂和不良溶剂的混合溶剂,
溴化合物在混合溶剂中的溶解度保持在 0.1 至 5 克/100 克溶剂;以及
(iv) 从浆液中分离出
溴化合物的固体颗粒。