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US5266642A Process for the preparation of alpha-methylstyrene polymers 失效
制备α-甲基苯乙烯聚合物的方法

Process for the preparation of alpha-methylstyrene polymers
摘要:
An improved process for the preparation of .alpha.-methylstyrene polymers by aqueous emulsion polymerization in which a styrene monomer mixture is first polymerized in a quantity of from 0.5 to 8% by weight of the total quantity of monomers and thereafter an .alpha.-methylstyrene monomer mixture is polymerized batchwise or semi-continuously.
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