Triacylglycerol Candle Wax Composition for Low-Frosting Burn Stability

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Solution Overview

Problem

The candle industry faces challenges in finding renewable wax sources that reduce frosting effects and cracks while maintaining a good burning rate, and existing waxes often require high manufacturing temperatures, posing safety and cost concerns.

Innovation Solution

A wax composition comprising at least 70 wt.% triacylglycerols with 0.5 to 50 wt.% C22 fatty acid, which can be derived from partially or fully hydrogenated high erucic rapeseed oil, blended with other oils and polyol-based materials, to achieve a melting point of 35°C to 52°C, reducing frosting and cracking, and allowing safer, lower-temperature manufacturing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If renewable wax sources are used to replace paraffin, then environmental sustainability is improved, but frosting effects and cracks increase

Engineering Contradiction:

Improveenvironmental sustainabilityVSAvoidfrosting effects and cracks

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent modifies the chemical composition parameters of renewable waxes by controlling fatty acid profiles (specifically C16:0, C18:0, and C18:1 content) and iodine values to achieve optimal balance between sustainability and appearance quality, reducing frosting and cracking while maintaining renewable sourcing

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The invention creates composite wax formulations by blending multiple wax components with specific fatty acid compositions to achieve synergistic effects that reduce harmful surface defects while maintaining environmental benefits of renewable sources

Inventive Principle:

Principle #40Composite materials

2Productivity

If high manufacturing temperatures are used to produce candles, then burning rate is improved, but safety risks and energy consumption increase

Engineering Contradiction:

Improveburning rateVSAvoidsafety risks and energy consumption

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The patent adjusts the melting point parameters of the wax composition to an optimized range that enables adequate burning performance at lower manufacturing temperatures, reducing safety risks and energy consumption while maintaining acceptable burning rates

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The invention utilizes controlled phase transition properties of the wax formulation to achieve proper melting and burning behavior at reduced temperatures, allowing candles to burn effectively without requiring high manufacturing temperatures that pose safety and energy efficiency concerns

Inventive Principle:

Principle #36Phase transitions

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 composition results in candles with reduced frosting, fewer cracks, improved burn rate, and stable flame height, while enabling safer and more energy-efficient production using cheaper waxes.

Implementation Method 1

which can be derived from partially or fully hydrogenated high erucic rapeseed oil

Methodology Applied

Scientific EffectHydrogenation: Hydrogenation

Data Source

PatentUS12516267B2Wax compositions for use in candles and methods of preparing wax compositions

Publication Date: 2026.01.06 AAK AB(PUBL)

AI summary

A wax composition is disclosed, comprising at least 70% triacylglycerols, wherein the triacylglycerols comprise 0.5 to 50 wt. % of C22 fatty acid. A method of preparing a wax composition is disclosed. A candle comprising the wax composition and a method of preparing a candle are also disclosed.