| 摘要 |
<p>The present invention relates to a method for preparing a novel aromatic phosphate ester-based compound comprising the steps of: (a) reacting a compound expressed by chemical formula 1 (i) and a C6-10 aryl compound substituted with hydroxy or C1-6 alkoxy, or a C6-20 arylalkyl compound substituted with hydroxy or C1-6 alkoxy (ii), which are used as reaction materials by gradually heating to the temperature levels of 90-125°C, 125-180°C, 180-210°C and 210-240°C; (b) separating an aromatic phosphate ester-based compound from the resultant product in step (a) under the conditions of a pressure of 0.01 mmHg-50 mmHg and a temperature of 50°C -300°C using fractional distillation; and (c) reacting the aromatic phosphate ester-based compound separated in step (b) (i) and C1-10 alcohol or a nitrogen compound (ii) at a temperature of 10-70°C. The preparation method according to the present invention minimizes the loss of raw materials using a stepwise heating method and a reflux system, and can prevent explosions when preparing a compound having strong reactivity by using a dual cooling system which uses heat-transfer oil and water. Also, the preparation method according to the present invention enable a compound having high purity to be obtained by separating the compound using fractional distillation. Therefore, the amount of a flame retardant which is used for a flame-proofing process is regulated to an adequate amount. Further, the present invention can be used for flame-proofing not just general textile product, but also products for which safety/toxicity tests are required. [Reference numerals] (AA) Forced circulation pump</p> |
