bromize

The amount of bromine is about 60～70 percent in bromized polystyrene.

阻燃剂的含溴量60—70%。

In this paper, bromized polystyrene flame retardant was synthesized by electrophilic substitution of waste polystrene with bromine using aluminium ehlorid as catalyst.

利用三氯化铝作催化剂,废聚苯烯与溴发生亲电取代反应合成溴化聚苯烯阻燃剂。

p-Ethyl-phenylacetylene was synthesized from starting materials ethylbenzene via five steps by acylation、reduction、dehydration、bromize、eliminition reaction.And the conditions were optimized.

以苯作为原料,通过酰化、还原、脱水、溴化和消除五步反应合成苯炔,并对反应条件进行优化。