发明授权
US3981936A Method for the preparation of bis-(bromomethyl)-tetrachlorobenzenes and their use as flame-proofing agents 失效
双(溴甲基) - 四氯苯的制备方法及其作为防火剂的用途

Method for the preparation of bis-(bromomethyl)-tetrachlorobenzenes and
their use as flame-proofing agents
摘要:
A process for preparing a bis-(bromomethyl)-tetrachlorobenzene which comprises contacting a bis-(chloromethyl)-tetrachlorobenzene with a bromide of an element of the first to the third group of the Periodic Table, preferably in a solvent of the bis-(chloromethyl)-tetrachlorobenzene which solvent is a non-solvent for the bis-(bromomethyl)-tetrachlorobenzene being prepared; a stabilized polymeric composition comprising a polymer and a bis-(bromomethyl)-tetrachlorobenzene, preferably containing additionally a compound of antimony or boron.
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