Additive useful in oleaginous compositions
Preparation of materials including an oxaline ring structure for use as additives in oleaginous compositions, such as sludge dispersants for lubricating oil or anti-rust agents for gasoline is described. The oxaline-ring containing material is prepared by reacting at least equimolar amounts of a hydrocarbon substituted C/sub 4/-C/sub 10/ mono-unsaturated dicarboxylic acid material and a 2,2-disubstituted-2-amino-1-alkanol having 2 to 3 hydroxyl groups and containing a total of 4 to 8 carbons. The hydrocarbyl substituted dicarboxylic acid material includes ..cap alpha..-..beta.. unsaturated C/sub 4/ to C/sub 10/ dicarboxylic acid, or anhydrides or esters thereof, such as maleic acid, maleic anhydride, dimethyl fumarate, etc., which are substituted with a hydrocarbon chain containing at least 8 carbons, preferably 8 to 50 carbons (branched or unbranched). The 2,2-disubstituted-2-amino-1-alkanol can be represented by the formula NH/sub 2/-CX/sub 2/-CH/sub 2/OH, where X is an alkyl or hydroxyl alkyl group with at least one of the X substitutents, and preferably both X substitutents, being a hydroxy alkyl group of the structure -(CH/sub 2/)/sub n/OH where n = 1 to 3.
- Assignee:
- Exxon Research and Engineering Co.
- Patent Number(s):
- US 4157243
- OSTI ID:
- 5693541
- Resource Relation:
- Patent File Date: Filed date 19 Jun 1978
- Country of Publication:
- United States
- Language:
- English
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