Title: Technology for synthesizing and separating condensed bromoacenaphthylene
Application Number: 95117821 Application Date: 1995.12.06
Publication Number: 1130168 Publication Date: 1996.09.04
Approval Pub. Date: Granted Pub. Date: 1999.09.22
International Classifi-cation: C07C17/00,C07C17/26,C07C17/38,C07C23/18,C07C25/22
Applicant(s) Name: Beijing Gas Burning and Coal Chemical Eng. Inst. Address: 100023
Inventor(s) Name: Li Songyue
Attorney & Agent: GAO SHANGMEI
Abstract:
     The invented technology features that it uses bromine chloride as brominating agent, the acenaphthene as raw material, the halo-chain-hydrocarbon or halogenated aryl-hydrocarbon as solvent, under the action of initiator or ultraviolet ray radiation, the bromine chloride is firstly added to undergo the side-chain brominating reaction, the Lewis acid is added as catalyst for condensation, then the bromine chloride is added to undergo the aryl-cyclic brominating, at last it is made up by removing HBr under the basic condition and adopting phase transfusion catalyst. The produced solution is dripped in the hot water containing dissolved surfactant and the powdery precipitate product is separated from water. The synthesizing reaction time is short, the yield of reaction is increased, said product is a fire-retardant agent with good anti-radiation property.
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