Fused-Ring Polycyclic Amine Olefinic Polymers for Lubricant Dispersancy

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Solution Overview

Problem

There is a need for lubricant fluids with improved dispersancy and viscosity properties, particularly for low viscosity grades used in engine and drive train transmission oils, which must reduce sludge, handle soot effectively, provide wear protection, and maintain fuel economy while keeping sulphated ash and phosphorus levels low.

Innovation Solution

The use of functionalized olefinic polymers comprising olefinic polymers bound to fused-ring polycyclic amines, where the fused-ring polycyclic amine includes at least one secondary amine, another heteroatom, and a primary amine directly pendant to the olefinic polymer, enhancing dispersancy and viscosity properties.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of energy

If low viscosity grades are used to improve fuel economy, then fuel efficiency is improved, but the ability to maintain cleanliness and handle soot deteriorates

Engineering Contradiction:

Improvefuel economyVSAvoidcleanliness maintenance

Core Design Contradiction:

Loss of energyVSReliability

Solution Approach 1:

The patent modifies the chemical structure of dispersant molecules by introducing fused-ring polycyclic amine groups with specific heteroatoms (oxygen, nitrogen, sulfur) and pendant primary amine groups. This changes the chemical parameters of the dispersant to enhance soot dispersancy and oxidation resistance, allowing low viscosity oil to maintain cleanliness effectively

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The dispersant is formulated as a composite structure combining olefinic polymer backbone with fused-ring polycyclic amine functional groups. This composite molecular architecture integrates the viscosity-lowering properties of the polymer with the soot-handling capabilities of the polycyclic amine groups, resolving the contradiction between low viscosity and soot dispersancy

Inventive Principle:

Principle #40Composite materials

2Reliability

If dispersant treat rates are increased to improve soot dispersancy, then soot handling is improved, but viscosity increases and fuel economy deteriorates

Engineering Contradiction:

Improvesoot dispersancyVSAvoidfuel economy

Core Design Contradiction:

ReliabilityVSLoss of energy

Solution Approach 1:

The patent changes the chemical parameters of the dispersant by incorporating fused-ring polycyclic amine groups with heteroatoms and pendant primary amine groups, which enhance soot dispersancy at the molecular level. This allows effective soot handling at lower treat rates, preventing viscosity increase and maintaining fuel economy

Inventive Principle:

Principle #35Parameter changes

3Object-generated harmful factors

If sulphated ash and phosphorus levels are reduced to meet emission requirements, then environmental compliance is improved, but wear protection capability deteriorates

Engineering Contradiction:

Improvesulphated ash and phosphorus levelsVSAvoidwear protection

Core Design Contradiction:

Object-generated harmful factorsVSReliability

Solution Approach 1:

The patent changes the chemical composition parameters of the lubricant by using fused-ring polycyclic amine functionalized polymers that provide wear protection through alternative mechanisms not dependent on phosphorus or sulphated ash. The polycyclic amine structure provides film strength and wear protection while maintaining low levels of harmful additives

Inventive Principle:

Principle #35Parameter changes

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

These functionalized olefinic polymers exhibit exceptional carbon black/soot dispersancy and improved antioxidant performance, enabling better performance in lubricating oil compositions, including reduced viscosity and enhanced wear protection at lower dispersant treat rates.

Implementation Method 1

exhibit exceptional carbon black/soot dispersancy

Methodology Applied

Scientific EffectDispersion: Dispersion (of waves)

Implementation Method 2

reduced viscosity and enhanced wear protection

Methodology Applied

Scientific EffectViscosity modification:

Implementation Method 3

improved antioxidant performance

Methodology Applied

Scientific EffectOxidation resistance: Oxidation

Data Source

PatentUS20250188379A1Fused-ring polycyclic amine functionalized olefinic polymers for lubricating oil compositions

Publication Date: 2025.06.12 INFINEUM INT LTD

AI summary

This disclosure relates to functionalized olefinic polymers comprising an olefinic polymer bound to at least one fused-ring polycyclic amine for each polymer molecule, wherein the fused-ring polycyclic amine comprises at least one secondary amine and at least one other heteroatom therein and further comprises at least one primary amine directly pendant thereto, wherein the at least one fused-ring polycyclic amine is bound to the olefinic polymer through the at least the one primary amine.