Lubricating Compositions

a technology of lubricating compositions and compositions, applied in the direction of lubricant compositions, additives, petroleum industry, etc., can solve the problems of increasing scrutiny of certain alkylphenols and products prepared from them

Inactive Publication Date: 2021-10-07
THE LUBRIZOL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The composition achieves effective detergent performance and cleanliness without the use of C12 alkyl phenol-based compounds, maintaining suitable viscosity and oil solubility, thus addressing the environmental concerns associated with traditional alkylphenol detergents.

Problems solved by technology

Recently, however, certain alkylphenols and products prepared from them have come under increased scrutiny due to their classification as potentially harmful materials.

Method used

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  • Lubricating Compositions
  • Lubricating Compositions
  • Lubricating Compositions

Examples

Experimental program
Comparison scheme
Effect test

example 1

on of Isobutylene-Substituted Phenol

[0256]Phenol is alkylated with a 350 Mw high vinylidene polyisobutylene (obtained from Texas Petroleum Products) under standard conditions using boron trifluoride as a catalyst, as shown in reaction scheme 1 above.

[0257]Phenol (271.5 g) and toluene (131.2 g) are first mixed in a nitrogen blanketed vessel followed by the dropwise addition of BF3 phenol complex (43.7 g) over 20 mins. To this mixture, a solution of 350 Mw polyisobutylene (404.3 g, Texas Petroleum Products) diluted in toluene (132.3 g) is added dropwise over 4 hrs. The addition rate is controlled to maintain a temperature between 13-21° C. and never exceeded 28° C.

[0258]The reaction mixture is then neutralized slowly with calcium hydroxide (84.0 g) with the temperature being held below 28° C. The neutralized reaction mixture is held for 3 hrs following which diatomaceous earth (100 g) is charged to the reaction and the neutralization completed with ammonia hydroxide (10 g). The reacti...

example 2

of Polyisobutylene-Alkylated Phenol

[0260]The material of Example 1 is used to synthesize a neutral calcium phenate using the method shown in scheme 2, above.

[0261]The 350 Mw polyisobutylene-alkylated phenol (250.2 g) is heated to 100° C. while stirring in a vessel under a nitrogen blanket. Calcium hydroxide (22.2 g) and ethylene glycol (17.4 g) are added and the mixture is heated to 124° C. Sulfur (45.4 g) is added and the mixture is heated to 185° C. The reaction is held at this temperature for 7 hours. Diluent oil (52.7 g) is added and the mixture is then cooled to room temperature.

[0262]Ethylene glycol (13.7 g) and n-decanol (31.9 g) are added to the reaction mixture with stirring, and the mixture is then heated to 168° C. under a nitrogen blanket. Calcium hydroxide (17.3 g) is then added and the mixture is heated to 168° C. while removing volatiles by distillation. Additional diluent oil (39.3 g) is added to the reaction mixture which is heated to 220° C. with vacuum (13 kPa pre...

example 3

on of Lubricating Composition

[0266]The sulfur bridged calcium phenate of Example 2 is blended into a typical marine diesel cylinder lubricant (MDCL) to provide Example 3.

[0267]A comparative MDCL (Example 4) is blended using the commercially available overbased calcium phenate. The compositions of the two lubricant compositions are shown in TABLE 3.

TABLE 3Exemplary and Baseline Formulations (treat rates are oil free)Example 4 Example 3 Comparative Lubricating Lubricating compositioncompositionIngredient(% by wt.)(% by wt.)500N Oil (8-10Cst)Balance to 100%150BS Oil29.3029.0400TBN Overbased Calcium8.908.9SulfonateBorated Succinimide0.670.67DispersantAnti-foam agent0.030.03150TBN Commercial—3.65Overbased Calcium Phenate150TBN Calcium Phenate-3502.97—Mw polyisobutylene Phenol

[0268]The MDCLs are tested for high temperature deposit forming tendency in both a panel coker apparatus (Similar to GFC Lu-29-T-97).

[0269]Panel coker testing is performed as follows: the sample, at 105° C., is splas...

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Abstract

A lubricating composition suited to use for lubricating a hydraulic system includes an oil of lubricating viscosity and a compound comprising a polyolefin-substituted bridged hydroxyaromatic compound or metal salt thereof, wherein the wherein the polyolefin is derived from a isobutylene having a number average molecular weight of 150 to 800.

Description

BACKGROUND[0001]The invention relates generally to lubricating compositions (lubricants) and finds particular application in connection with an additive for a lubricating composition and to a lubricating method.[0002]Phenol-based detergents are known. Among these are phenates based on phenolic monomers linked with sulfur bridges or alkylene bridges such as methylene linkages derived from formaldehyde. The phenolic monomers themselves are typically substituted with an aliphatic hydrocarbyl group to provide a measure of oil solubility. The hydrocarbyl groups may be alkyl groups, such as dodecylphenol (or propylene tetramer-substituted phenol). Basic sulfurized polyvalent metal phenates are described, for example, in U.S. Pat. No. 2,680,096, to Walker et al., issued Jun. 1, 1954; and U.S. Pat. No. 3,372,116, to Meinhardt, issued Mar. 6, 1968.[0003]Recently, however, certain alkylphenols and products prepared from them have come under increased scrutiny due to their classification as po...

Claims

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Application Information

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Patent Type & AuthorityApplications(United States)
IPC IPC(8): C10M169/04
CPCC10M169/048C10N2030/40C10M169/04C10M2203/1006C10M2203/1025C10M2205/0285C10M2207/027C10M2215/223C10M2215/28C10M2219/044C10M2219/046C10M2219/089C10M2219/106C10M2223/043C10M2223/045C10M2203/1085C10M2207/028C10M2223/042C10N2020/04C10N2030/04C10N2030/02C10N2030/52C10N2040/12C10N2040/08C10N2060/10C10N2060/14C10N2010/04C10M159/22C10M2201/084C10M2205/026C10M2205/028C10M2207/024C10M2215/02C10M2215/086C10M2219/104C10M2223/04C10N2010/06C10N2020/02C10N2030/06C10N2030/10C10N2030/12
InventorSAMPLER, EDWARD P.WALKER, GARY M.COOK, STEPHEN J.KILSBY, SAMUEL M.BUTKE, BETSY J.
OwnerTHE LUBRIZOL CORP