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US5086115A Process for production of oxidized polyisobutenes, their use in the production of additives and use of the additives 失效
生产氧化多糖的方法,它们在添加剂生产中的应用和添加剂的使用

Process for production of oxidized polyisobutenes, their use in the
production of additives and use of the additives
Abstract:
Oxidised polyisobutenes, that is polyisobutenes containing ketonic and carboxylic acid carbonyl groups, are produced by passing through a column of the polyisobutene maintained at a temperature in the range from 140.degree. to 200.degree. C. and at atmospheric or elevated total pressure a molecular oxygen-containing gaseous oxidant at a gas flow rate greater than 10 liters cm.sup.-2 h.sup.-1 measured at the operating pressure. The oxidized polysisobutenes can be reacted for example with an aliphatic polyamine to produce a lubricating oil additive or with an aliphatic polyamine and formaldehyde to product a fuels additive.
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