Modified succinimides (II)
AssigneeChevron Research Company
InventorRobert H. Wollenberg
Life of this patent
Estimating the term…
Abstract
Disclosed are polyamino alkenyl or alkyl succinimides which have been modified by treatment with a lactone to yield polyamino alkenyl or alkyl succinimides wherein one or more of the basic nitrogens of the polyamino moiety is substituted with a hydroxyalkylene carbonyl group. The additives so disclosed are useful as dispersants in lubricating oils, gasolines, marine crankcase oils and hydraulic oils.
Claims11
A polyamino alkenyl or alkyl succinimide wherein one or more of the nitrogens of the polyamino moiety is substituted with hydroxyalkylene carbonyl wherein said alkylene is a three or four carbon alkylene group or a three or four carbon alkylene group substituted with from 1 to 3 alkyl groups of from 1 to 2 carbons each.
A compound of the formula:
- ##STR15## wherein R.sub.1 is alkenyl or alkyl of from 10 to 300 carbon atoms;
- R.sub.2 is alkylene of 2 to 10 carbon atoms;
- R.sub.6 is hydrogen, lower alkyl of from 1 to 6 carbon atoms, and hydroxyalkylene carbonyl wherein said alkylene is a three or four carbon alkylene group or a three or four carbon alkylene group substituted with from 1 to 3 alkyl groups of from 1 to 2 carbon atoms each;
- a is an integer of from 0 to 10;
- and T is --NH.sub.2, ##STR16## wherein R.sub.1 is alkenyl or alkyl of from 10 to 300 carbon atoms, and hydroxyalkyleneamide wherein said alkylene is a three or four carbon alkylene group or a three or four carbon alkylene group substituted with from 1 to 3 alkyl groups of from 1 to 2 carbon atoms each with the proviso that if T is either --NH.sub.2 or ##STR17## then a is not zero and at at least one of R.sub.6 is hydroxyalkylene carbonyl.
A process for preparing a polyamino alkenyl or alkyl succinimides wherein one or more of the basic nitrogens of the polyamino moiety is substituted with a hydroxyalkylene carbonyl group wherein said alkylene is a 3 or 4 carbon alkylene group or a 3 or 4 carbon alkylene group substituted with 1 to 3 alkyl groups of 1 to 2 carbons each which comprises contacting a temperature sufficient to cause reaction a lactone represented by the formula ##STR18## wherein R is alkyl of from 1 to 2 carbon atoms;
- n is an integer from 0 to 3;
- and p is an integer of from 0 to 1;
- with a polyamino alkenyl or alkyl succinimide.
Dependencies are inferred from the claim text.