Process for production of oxidized polyisobutenes, their use in

Details Process for production of oxidized polyisobutenes, their use in Process for production of oxidized polyisobutenes, their use in

1991-04-26

1992-02-04

Lipman, Bernard

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525157, 5253337, 5253338, 525381, 525382, C08F 832

Patent

active

050861158

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.

REFERENCES:
patent: 3931024 (1976-01-01), Hu
patent: 4011380 (1977-03-01), West et al.

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