Lubricant Compounds Reducing Viscosity-Pressure Modulus

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Solution Overview

Problem

Current lubricating oils face challenges in reducing friction and wear under severe conditions while minimizing the use of environmentally hazardous elements like phosphorus, sulfur, and heavy metals, and they often have limited durability and fuel efficiency due to high viscosity and oxidation stability issues.

Innovation Solution

A novel compound with a specific chemical structure, represented by the formula (Z), is developed, which features a p-valent chain or cyclic residue with radially extending side chains that ensure a large free volume, reducing viscosity-pressure modulus and thus providing low friction and wear resistance even under high pressure and high shear conditions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional lubricating oils use chemicals containing phosphorus, sulfur, or heavy metals to reduce friction under severe conditions, then wear resistance improves, but environmental harm increases

Engineering Contradiction:

Improvewear resistanceVSAvoidenvironmental harm

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent changes the chemical composition parameters by using organic compounds with specific molecular structures (ester groups, carbonate groups, carboxyl groups) that have low viscosity-pressure modulus, eliminating the need for phosphorus, sulfur, and heavy metals while maintaining lubrication performance

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent employs biodegradable base oils and additives that can be easily disposed of without environmental contamination, replacing persistent harmful chemicals with environmentally friendly alternatives that decompose naturally

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

2Strength

If lubricating oils use high viscosity base oils to maintain film strength under load, then load-bearing capacity improves, but fuel efficiency deteriorates

Engineering Contradiction:

Improvefilm strengthVSAvoidfuel efficiency

Core Design Contradiction:

StrengthVSUse of energy by moving object

Solution Approach 1:

The patent changes the viscosity-pressure modulus parameter by selecting base oils with specifically controlled molecular structures and properties, achieving optimal balance between film strength and fuel efficiency through parameter optimization rather than using simply high-viscosity oils

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent creates composite lubricating oil formulations by combining base oils with specific additives (ester groups, carbonate groups, carboxyl groups) to achieve synergistic effects that provide adequate film strength at lower viscosities, improving fuel efficiency

Inventive Principle:

Principle #40Composite materials

3Reliability

If lubricating oils use multiple chemicals to address different lubrication needs, then comprehensive performance improves, but chemical exhaustion and oil deterioration accelerate

Engineering Contradiction:

Improvecomprehensive lubrication performanceVSAvoidoil durability

Core Design Contradiction:

ReliabilityVSDuration of action of stationary object

Solution Approach 1:

The patent develops multi-functional lubricating oil compositions where the base oil and additive packages perform multiple functions simultaneously (lubrication, wear protection, oxidation resistance, deposit prevention) rather than relying on separate specialized chemicals, reducing overall chemical consumption and extending oil life

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent merges multiple lubrication functions into a unified chemical system where base oils and additives work together synergistically, combining wear protection, oxidation stability, and deposit control into a single integrated formulation that lasts longer

Inventive Principle:

Principle #5Merging (Combining)

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 compound achieves low friction and wear resistance by forming a low-viscosity elastic fluid lubricating film, maintaining lubrication in severe conditions without reacting with the interface, enhancing fuel efficiency and durability, and can be used in various industrial applications including engine oils and traction oils.

Implementation Method 1

lubricating oils have been used in every industrial machine... for the purposes of reducing a coefficient of friction and suppressing wear

Methodology Applied

Scientific EffectLubrication: Lubrication

Implementation Method 2

features a p-valent chain or cyclic residue with radially extending side chains that ensure a large free volume, reducing viscosity-pressure modulus

Methodology Applied

Scientific EffectViscosity-pressure modulus reduction:

Data Source

PatentUS9145432B2Compounds useful in various fields of a lubricant

Publication Date: 2015.09.29 FUJIFILM CORP

AI summary

A compound represented by following formula (I): A-L-{D1-(E)q-D2-(B)m—Z1—R}p. In the formula, A represents a p-valent chain or cyclic residue; L represents a single bond or a divalent linking group; p represents an integer of 2 or more; D1 represents a carbonyl group (—C(═O)—) or a sulfonyl group (—S(═O)2—); D2 represents a carbonyl group (—C(═O)—), a sulfonyl group (—S(═O)2—), a carboxyl group (—C(═O)O—), a sulfonyloxyl group (—S(═O)2O—), a carbamoyl group (—C(═O)N(Alk)-) or a sulfamoyl group (—S(═O)2N(Alk)-); E represents a divalent group; and R represents a hydrogen atom, a substituted or non-substituted C8 or longer alkyl group, a perfluoroalkyl group or a trialkylsilyl group.