Lubricant compositions containing both hydrocarbyl substituted mono and bissuccinimide having polyamine chain linked hydroxacyl radicals, and neopentyl derivative
First Claim
1. A lubricant composition comprising a major amount of a lubrication oil from about 0.06 to 0.07 weight percent based on nitrogen of a hydrocarbyl-substituted mono- and bis-succinimide having polyamine chain linked hydroxyacyl radicals represented by the formula:
- ##STR9## in which R is a hydrocarbyl radical having from about 8 to 400 carbon atoms, X is a divalent alkylene or secondary hydroxy substituted alkylene radical having from 2 to 3 carbon atoms, A is hydrogen or a hydroxyacyl radical selected from the group consisting of glycolyl, lactyl, 2-hydroxy-methyl propionyl and 2,2'"'"'-bis-hydroxymethyl propionyl radicals and in which at least 30 percent of said radicals represented by A are said hydroxyacyl radicals, x is a number from 1 to 6, and R'"'"' is a radical selected from the group consisting of --NH2, --NHA, or a hydrocarbyl substituted succinyl radical having the formula;
##STR10## in which R has the values noted above; and
from about 1 to 3 weight percent of a polyol derivative prepared by the method comprising (a) contacting an aliphatic polyolefin of an average molecular weight between about 250 and 50,000 with P2 S5 in the presence of between about 0.1 and 5 wt. percent sulfur at a temperature of between about 100° and
320°
C., P2 S5 comprising between about 5 and 40 wt. percent of the reaction mixture, (b) contacting the resultant polyolefin-P2 S5 reaction product with steam at a temperature between about 100° and
260°
C. utilizing at least about a mole ratio excess of steam in respect to said polyolefin-P2 S5 reaction product, (c) removing inorganic phosphorus acid from the steam treated polyolefin-P2 S5 reaction product, (d) contacting the inorganic acid free, steam hydrolyzed polyolefin-P2 S5 reaction product with a neopentyl polyol of the formula;
##STR11## where R'"'"'" and RIV are selected from the group consisting of alkylol and alkyl of from 1 to 20 carbon atoms at a temperature between about 180° and
220°
C. in a mole ratio of said inorganic phosphorus acid free, steam hydrolyzed P2 S5 -polyolefin reaction product to said polyol of between about 1;
0.33 and 1;
2 to form said polyol derivative.
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Accused Products
Abstract
A lubricant composition comprising a major amount of a lubricating oil and an effective dispersant amount of both a hydrocarbyl-substituted mono- and bis-succinimide having polyamine chain linked hydroxyacyl radicals, and a polyol derivative prepared by contacting an aliphatic polyolefin with P2 S5 in the presence of sulfur and P2 S5, contacting the resultant polyolefin-P2 S5 reaction product with a steam, removing inorganic phosphorus acid from the steam treated polyolefin P2 S5 reaction product, and contacting the polyolefin P2 S5 reaction product with a neopentyl polyol. The combination of succinimide and polyol derivative exhibit enhanced dispercancy and/or detergency over either additive alone.
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Citations
13 Claims
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1. A lubricant composition comprising a major amount of a lubrication oil from about 0.06 to 0.07 weight percent based on nitrogen of a hydrocarbyl-substituted mono- and bis-succinimide having polyamine chain linked hydroxyacyl radicals represented by the formula:
- ##STR9## in which R is a hydrocarbyl radical having from about 8 to 400 carbon atoms, X is a divalent alkylene or secondary hydroxy substituted alkylene radical having from 2 to 3 carbon atoms, A is hydrogen or a hydroxyacyl radical selected from the group consisting of glycolyl, lactyl, 2-hydroxy-methyl propionyl and 2,2'"'"'-bis-hydroxymethyl propionyl radicals and in which at least 30 percent of said radicals represented by A are said hydroxyacyl radicals, x is a number from 1 to 6, and R'"'"' is a radical selected from the group consisting of --NH2, --NHA, or a hydrocarbyl substituted succinyl radical having the formula;
##STR10## in which R has the values noted above; and
from about 1 to 3 weight percent of a polyol derivative prepared by the method comprising (a) contacting an aliphatic polyolefin of an average molecular weight between about 250 and 50,000 with P2 S5 in the presence of between about 0.1 and 5 wt. percent sulfur at a temperature of between about 100° and
320°
C., P2 S5 comprising between about 5 and 40 wt. percent of the reaction mixture, (b) contacting the resultant polyolefin-P2 S5 reaction product with steam at a temperature between about 100° and
260°
C. utilizing at least about a mole ratio excess of steam in respect to said polyolefin-P2 S5 reaction product, (c) removing inorganic phosphorus acid from the steam treated polyolefin-P2 S5 reaction product, (d) contacting the inorganic acid free, steam hydrolyzed polyolefin-P2 S5 reaction product with a neopentyl polyol of the formula;
##STR11## where R'"'"'" and RIV are selected from the group consisting of alkylol and alkyl of from 1 to 20 carbon atoms at a temperature between about 180° and
220°
C. in a mole ratio of said inorganic phosphorus acid free, steam hydrolyzed P2 S5 -polyolefin reaction product to said polyol of between about 1;
0.33 and 1;
2 to form said polyol derivative. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
- ##STR9## in which R is a hydrocarbyl radical having from about 8 to 400 carbon atoms, X is a divalent alkylene or secondary hydroxy substituted alkylene radical having from 2 to 3 carbon atoms, A is hydrogen or a hydroxyacyl radical selected from the group consisting of glycolyl, lactyl, 2-hydroxy-methyl propionyl and 2,2'"'"'-bis-hydroxymethyl propionyl radicals and in which at least 30 percent of said radicals represented by A are said hydroxyacyl radicals, x is a number from 1 to 6, and R'"'"' is a radical selected from the group consisting of --NH2, --NHA, or a hydrocarbyl substituted succinyl radical having the formula;
Specification