Renewable Hydrocarbon Multipurpose Oil for Hard-to-Reach Penetration

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Solution Overview

Problem

Conventional multipurpose oils are volatile, flammable, and non-renewable, posing safety and environmental concerns while lacking optimal anticorrosion, water displacement, and lubricating properties, especially in hard-to-reach areas.

Innovation Solution

A multipurpose oil comprising 80.0-99.5 vol-% of a renewable hydrocarbon base stock with a biogenic carbon content of over 80 wt-%, primarily composed of C14-C20 hydrocarbons and 70 wt-% isoparaffins, combined with 0.5-20.0 vol-% of an anionic surfactant composition, particularly anionic aromatic surfactants, to enhance penetration, lubrication, and anticorrosion performance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If conventional multipurpose oils are used, then they can penetrate between surfaces and loosen stuck surfaces, but they are volatile and flammable causing safety concerns and environmental harm

Engineering Contradiction:
Improvepenetration performanceVSAvoidvolatility and flammability
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The patent changes the chemical composition parameters by using renewable hydrocarbon base stocks with specific carbon number distributions (C15-C35, preferably C17-C29) and high paraffin content (≥80 wt-%, preferably ≥90 wt-%). This parameter change increases the flash point to ≥100°C (preferably ≥120°C) and reduces volatility through controlled boiling point ranges (T5: 200-350°C, T95: 300-450°C), thereby resolving the contradiction between penetration performance and safety

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent creates a composite formulation by combining renewable hydrocarbon base stocks with specific additive packages including corrosion inhibitors, lubricity additives, and anti-wear agents. This composite approach maintains the penetration ability while the synergistic combination of components provides enhanced safety characteristics and environmental compatibility

Inventive Principle:
Principle #40Composite materials

2Reliability

If conventional multipurpose oils are applied directly on surfaces, then they can provide lubrication and corrosion protection, but most of the applied oil evaporates or drips into the environment

Engineering Contradiction:
Improvelubrication and corrosion protectionVSAvoidoil evaporation and dripping
Core Design Contradiction:
ReliabilityVSLoss of substance

Solution Approach 1:

The patent optimizes viscosity parameters (kinematic viscosity at 40°C: 2-10 mm²/s, preferably 3-7 mm²/s) and boiling point distribution (T5-T95 range: 100-150°C) to reduce evaporation losses. The high flash point (≥100°C) and controlled volatility ensure that the lubricant remains on the surface longer, improving reliability while reducing environmental loss

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent ensures continuous protective action by formulating the oil to remain stable and effective over extended periods. The renewable hydrocarbon base stock provides sustained lubrication and corrosion protection without rapid evaporation, maintaining a continuous protective film on surfaces

Inventive Principle:
Principle #20Continuity of useful action

3Reliability

If conventional multipurpose oils are used, then they provide basic lubrication and corrosion protection, but they are non-renewable and not biodegradable

Engineering Contradiction:
Improvelubrication and corrosion protectionVSAvoidenvironmental pollution
Core Design Contradiction:
ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The patent fundamentally changes the origin parameter of the base stock from fossil-based to renewable biological sources (vegetable oils, animal fats, microbial oils). This parameter change ensures biodegradability and renewable sourcing while maintaining the necessary lubrication and corrosion protection properties through careful formulation

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent creates an environmentally compatible composite by combining renewable hydrocarbon base stocks with biodegradable additives and corrosion inhibitors. This composite formulation achieves reliable lubrication and corrosion protection while ensuring complete biodegradability and eliminating persistent environmental pollution

Inventive Principle:
Principle #40Composite materials

4Ease of operation

If multipurpose oil has low viscosity for good fluidity, then it can flow easily to treated surfaces, but it runs and drips off quickly

Engineering Contradiction:
ImprovefluidityVSAvoidresidence time on surface
Core Design Contradiction:
Ease of operationVSDuration of action of moving object

Solution Approach 1:

The patent optimizes the viscosity parameter to a specific range (kinematic viscosity at 20°C: 2-10 mm²/s, at 40°C: 2-7 mm²/s) that balances fluidity and residence time. This parameter optimization ensures the oil flows easily to treat surfaces while maintaining sufficient thickness to prevent rapid running and dripping, extending the duration of protective action

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

The oil achieves excellent anticorrosion, water displacement, and lubricating properties in both accessible and hard-to-reach areas, with improved safety and environmental sustainability, reducing ventilation requirements and enhancing cold performance.

Implementation Method 1

an anionic surfactant composition, preferably comprising at least one or more anionic aromatic surfactant(s), more preferably anionic aromatic surfactant(s) containing mono- and/or di-alkaryl group(s)

Methodology Applied
Scientific EffectSurface tension reduction: Surfactant

Implementation Method 2

the high content of C14-C20 hydrocarbons in the principal constituent of the present multipurpose oil, i.e. the renewable hydrocarbon base stock, helps to control the flash point and the volatility of the multipurpose oil, improving safety

Methodology Applied
Scientific EffectVolatility control: Vapour Pressure

Implementation Method 3

at least 90 wt-% of paraffins, of which paraffins at least 70 wt-% are isoparaffins

Methodology Applied
Scientific EffectLubrication: Lubrication

Data Source

PatentEP4493659B1Multipurpose oil and method for producing the same
Publication Date: 2025.11.05 NESTE OYJ

AI summary

A multipurpose oil comprising a renewable hydrocarbon base stock and an anionic surfactant composition, and a method for producing the same are disclosed. Use of the multipurpose oil for at least two or more of anticorrosion, penetration, lubrication, water displacement, and/or cleaning, is further disclosed.