Titanium Alkoxide Additive Synthesis for Low Sulfur Lubricants

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Solution Overview

Problem

Current lubricant additives for automotive and diesel engines face challenges such as poor oil solubility, corrosion, darkening of the lubricant, and high levels of sulfur and phosphorus, which can poison pollution control devices, necessitating the development of alternatives that provide friction and wear reduction without adverse effects.

Innovation Solution

A method for producing a homogeneous titanium-containing lubricant additive concentrate by reacting titanium alkoxide with water in a reaction medium containing hydrocarbyl succinimides, hydrocarbyl amines, or Mannich base dispersants, resulting in a product that is free of acidic components and can be directly added to lubricating oil, enhancing compatibility with pollution control devices.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If organo-molybdenum or organo-zinc phosphate additives are used to reduce friction and wear, then friction and wear reduction is improved, but sulfur and phosphorus levels increase which poisons pollution control devices

Engineering Contradiction:

Improvefriction and wear reductionVSAvoidsulfur and phosphorus content

Core Design Contradiction:

ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The patent changes the chemical composition parameters by using titanium alkoxide instead of traditional molybdenum or zinc phosphate compounds, achieving wear reduction without increasing sulfur and phosphorus levels that harm pollution control devices

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent employs a simple, cost-effective synthesis method using readily available titanium alkoxide and water, replacing complex multi-step processes to produce an effective additive concentrate

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

2Reliability

If traditional multi-step synthesis processes are used to make titanium-containing additives, then additive performance is achieved, but manufacturing complexity and time increase

Engineering Contradiction:

Improveadditive performanceVSAvoidsynthesis process steps

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent combines multiple traditional steps (synthesis, purification, blending) into a single in-situ reaction step where titanium alkoxide reacts directly with water in the lubricant base oil to form the active additive species

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The lubricant base oil itself serves as the reaction medium, eliminating the need for separate synthesis equipment and purification steps, as the reaction occurs directly in the final product

Inventive Principle:

Principle #25Self-service

3Ease of manufacture

If acidic components are present in titanium-containing additives, then certain chemical reactions proceed, but corrosion and oil darkening increase

Engineering Contradiction:

Improvechemical reactivityVSAvoidcorrosion and darkening

Core Design Contradiction:

Ease of manufactureVSObject-affected harmful factors

Solution Approach 1:

The patent changes the pH parameter by using non-acidic titanium alkoxide compounds and controlling the reaction conditions to avoid acid formation, thereby preventing corrosion and darkening while maintaining chemical reactivity

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent uses hydrocarbyl succinimides or hydrocarbyl amines as intermediary dispersants that facilitate the reaction between titanium alkoxide and water while preventing direct contact between acidic intermediates and metal surfaces

Inventive Principle:

Principle #24Intermediary (Mediator)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The method produces a titanium-containing additive that reduces wear and friction effectively while being non-corrosive and compatible with pollution control devices, allowing for precise blending and improved lubricant performance without darkening the oil or increasing sulfur and phosphorus levels.

Implementation Method 1

reacting titanium alkoxide with water in a reaction medium that includes a dispersant

Methodology Applied

Scientific EffectHydrolysis: Hydrolysis

Implementation Method 2

D. Papoutsi et aL in Langmuir 1994, 10, 1684-1689 discloses a method for making a titanium containing compound in a Sol-Gel process using Titanium (IV) isopropoxide

Methodology Applied

Scientific EffectSol-Gel process: Sol

Implementation Method 3

reacting titanium alkoxide with water in a reaction medium that includes a dispersant selected from hydrocarbyl succinimides, hydrocarbyl amines and Mannich base dispersants to provide a homogeneous titanium-containing additive product

Methodology Applied

Scientific EffectDispersion: Dispersion (of waves)

Data Source

PatentEP2135925B1Method for making a titanium-containing lubricant additive

Publication Date: 2011.12.21 AFTON CHEMICAL CORPORATION

AI summary

A method for making a titanium-containing lubricant additive, a lubricant additive concentrate made by the method and a lubricating composition containing the additive concentrate. The method includes reacting titanium alkoxide with water in a reaction medium that includes a dispersant to provide a homogeneous titanium-containing additive product. The additive product made by the method is substantially devoid of acidic components.