Deep Eutectic Solvent Lubricant for Carbon Neutrality and Low Corrosiveness

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing lubricating oil compositions containing ionic liquids are corrosive to metals, making it difficult to achieve both carbon neutrality and low corrosiveness simultaneously.

Innovation Solution

A lubricant comprising a deep eutectic solvent made of a hydrogen bond acceptor and a hydrogen bond donor, with a halogen atom content of 0.1% by mass or less, is developed.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-generated harmful factors

If an ionic liquid is blended as a component in lubricating oil composition, then carbon neutrality is improved, but metal corrosiveness worsens

Engineering Contradiction:

Improvecarbon neutralityVSAvoidmetal corrosiveness

Core Design Contradiction:

Object-generated harmful factorsVSObject-affected harmful factors

Solution Approach 1:

The patent changes the chemical composition parameters by replacing ionic liquids with deep eutectic solvents characterized by specific hydrogen bond acceptor/donor ratios and controlled halogen content (0.1% or less), thereby maintaining carbon neutrality while eliminating metal corrosiveness

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent uses composite deep eutectic solvent systems combining hydrogen bond acceptors (e.g., carboxylic acids, amides) with hydrogen bond donors (e.g., alcohols, water) in specific ratios to create a lubricant that achieves both carbon neutrality and low corrosiveness simultaneously

Inventive Principle:

Principle #40Composite materials

2Reliability

If mineral oils are used as lubricant base oils, then lubricating performance is maintained, but carbon neutrality worsens

Engineering Contradiction:

Improvelubricating performanceVSAvoidcarbon neutrality

Core Design Contradiction:

ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The patent changes the base oil composition from traditional mineral oils to deep eutectic solvents with controlled molecular structures, achieving carbon neutrality while maintaining lubricating performance through optimized viscosity and boundary lubrication properties

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent employs biodegradable deep eutectic solvent components that can be readily disposed of or decomposed, replacing persistent mineral oils and aligning with carbon neutrality goals while maintaining functional performance

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

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 lubricant provides a carbon-neutral solution with favorable lubricating properties and low metal corrosiveness.

Implementation Method 1

a deep eutectic solvent consisting of a hydrogen bond acceptor and a hydrogen bond donor

Methodology Applied

Scientific EffectHydrogen bonding: Chemical Bonding

Data Source

PatentUS20250215344A1lubricant

Publication Date: 2025.07.03 IDEMITSU KOSAN CO LTD

AI summary

Provided is a lubricant including a deep eutectic solvent consisting of a hydrogen bond acceptor and a hydrogen bond donor, the lubricant having a halogen atom content of 0.1% by mass or less. The lubricant provided contains a carbon-neutral component, and shows a favorable lubricating property and low corrosiveness to metals.