Amine-Based Polymer Fuel Detergent Structure

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Solution Overview

Problem

Current diesel detergents do not provide sufficient detergency and dispersion properties, leading to reduced fuel efficiency and increased carbon deposit formation in internal combustion engines, especially under high pressure and temperature conditions.

Innovation Solution

An amine-based polymer with a specific structure is developed, characterized by a polymer main chain and a structure represented by formula (I) attached via an attaching end, which enhances detergency and dispersing properties when used as a fuel detergent.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional detergents are used, then basic detergency is provided, but detergency and dispersion properties are insufficient under high pressure and temperature conditions

Engineering Contradiction:

Improvedetergency performanceVSAvoidperformance under high pressure and temperature

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent modifies the chemical structure of detergent molecules by introducing specific amine-based polymer structures with defined molecular weights and functional groups. This changes the physical and chemical parameters of the detergent to enhance its thermal stability and effectiveness under high pressure and temperature conditions in modern diesel engines

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The invention creates composite detergent molecules combining polyisobutylene chains with amine-based functional groups and carboxylic acid moieties. This composite structure integrates the oil-solubility properties of polyisobutylene with the detergency and dispersancy of amine-functional groups, providing superior performance under extreme engine conditions

Inventive Principle:

Principle #40Composite materials

2Object-generated harmful factors

If detergent concentration is increased to improve detergency, then carbon deposit formation is reduced, but fuel economy deteriorates

Engineering Contradiction:

Improvecarbon deposit formationVSAvoidfuel economy

Core Design Contradiction:

Object-generated harmful factorsVSLoss of energy

Solution Approach 1:

The patent optimizes the molecular weight and functional group composition of amine-based polymers to achieve maximum detergency at lower concentrations. The specific structural parameters (molecular weight 500-5000, specific amine-to-carboxylic acid ratios) enable high effectiveness with minimal dosage, reducing fuel economy penalties

Inventive Principle:

Principle #35Parameter changes

3Stability of the object's composition

If polyisobutylene succinic anhydride is used as detergent, then oil solubility is improved, but detergency performance becomes insufficient

Engineering Contradiction:

Improveoil solubilityVSAvoiddetergency performance

Core Design Contradiction:

Stability of the object's compositionVSReliability

Solution Approach 1:

The patent merges polyisobutylene succinic anhydride with amine-based polymers to create a hybrid detergent structure. This combination integrates the excellent oil solubility of polyisobutylene with the superior detergency and dispersancy of amine-functional groups, achieving both properties simultaneously

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The invention creates a composite molecular structure where polyisobutylene chains provide oil solubility and amine-functional groups provide detergency. This composite approach allows both properties to coexist and work synergistically in the same detergent molecule

Inventive Principle:

Principle #40Composite materials

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 amine-based polymer exhibits excellent detergency and dispersing properties, improving fuel economy and reducing carbon deposit formation in internal combustion engines, outperforming conventional detergents in both detergency simulation and demulsification tests.

Implementation Method 1

Its polar group can be adsorbed on the deposit molecules and/or the metal surface

Methodology Applied

Scientific EffectAdsorption: Adsorption

Implementation Method 2

The non-polar group improves the oil solubility, and prevents the deposit molecules from clustering and depositing on the metal parts, thereby providing the dispersing of deposits and detergency of fuel effect

Methodology Applied

Scientific EffectSteric hindrance:

Data Source

PatentEP3578575B1An amine-based polymer, a preparation process thereof and use thereof

Publication Date: 2023.11.01 CHINA PETROLEUM & CHEMICAL CORP

Figure 1

AI summary

The present invention provides an amine-based polymer, a preparation process thereof and use thereof. The amine-based polymer of the present invention is characterized in that said amine-based polymer contains a polymer main chain, and a structure represented by formula (I) is attached onto the polymer main chain, and said structure is attached to the polymer main chain via an attaching end present in at least one of Group G, Group G' and Group A in the structure, wherein each of the groups is defined as in the description. The amine-based polymer of the present invention is suitably used as a detergent, particularly suitably used as a fuel detergent. The amine-based polymer of the present invention is useful as a fuel detergent, and has an extraordinarily excellent detergency and dispersion properties.