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Method for removing polymer scale deposited on reactor walls and a polymer scale remover agent therefor
Method for removing polymer scale deposited on reactor walls and a polymer scale remover agent therefor
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机译:去除沉积在反应器壁上的聚合物垢的方法及其聚合物垢清除剂
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摘要
The invention provides an efficient method for removing polymer scale deposited on the walls of the polymerization reactor after completion of a polymerization run of an ethylenically unsaturated monomer, e.g. vinyl chloride, in an aqueous medium. The polymer scale adhering to the walls is soaked with a scale-remover solution containing a soluble cellulose derivative, such as ethyl cellulose, hydroxypropyl methyl cellulose and the like, applied thereto and, after standing as wet for a while, washed down easily with water. Certain additives to the solution, e.g. acids, alkalis, paraffins and emulsifying agents, may further enhance the effectiveness of the remover solution.
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