Olefin Wax Hardness via Controlled Oxidation
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Solution Overview
Problem
Alpha olefin waxes have difficulty achieving a combination of high physical strength and low viscosity, as these properties are generally correlated with molecular weight, making it challenging to enhance their performance in applications such as polishing and coating without compromising melt flow.
Innovation Solution
A process involving contacting a feedstock olefin wax with an oxygen-containing gas at a temperature greater than its melting point to produce hardened or oxidized olefin wax compositions, which have reduced needle penetration values and maintained or improved hardness with minimal impact on viscosity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the molecular weight of alpha olefin wax is increased to improve physical strength and hardness, then the hardness is improved, but the viscosity becomes excessively high
Solution Approach 1:
The patent applies parameter changes by oxidizing the alpha olefin wax to alter its chemical composition and physical properties. The oxidation process modifies the molecular structure to achieve enhanced hardness while controlling viscosity through regulated oxidation parameters (temperature, time, oxygen concentration), thereby resolving the contradiction between strength and viscosity without changing the base molecular weight
Solution Approach 2:
The patent creates a composite material system by combining oxidized alpha olefin wax with specific additives or blending it with other wax components. This composite approach allows the material to exhibit enhanced physical strength through oxidation while maintaining acceptable viscosity through the composite structure, effectively decoupling the direct correlation between molecular weight and both properties
2Strength
If the molecular weight of alpha olefin wax is increased to improve physical strength and hardness, then the hardness is improved, but the melt flow becomes insufficient
Solution Approach 1:
The patent uses parameter changes through controlled oxidation to modify the wax's physical properties. By adjusting oxidation parameters (temperature, duration, oxygen flow rate), the material achieves improved hardness while preserving adequate melt flow characteristics, thus resolving the contradiction between strength and productivity without increasing molecular weight
Solution Approach 2:
The patent applies local quality by introducing functional groups through oxidation at specific locations within the molecular structure. The oxidation process creates polar groups (carboxylic acid, ester, alcohol) that enhance intermolecular forces and hardness locally, while the overall molecular weight and melt flow properties remain controlled, thereby resolving the contradiction between strength and melt flow
3Adaptability or versatility
If oxidation is increased to improve functionality and polarity, then the functionality is improved, but the viscosity increases and color deteriorates
Solution Approach 1:
The patent applies partial action by implementing controlled, moderate oxidation rather than extensive oxidation. The oxidation process is carefully regulated to achieve sufficient functionality and polarity for the intended application while avoiding excessive oxidation that would cause unwanted viscosity increase and color deterioration. This partial oxidation approach resolves the contradiction between functionality and viscosity
Solution Approach 2:
The patent uses parameter changes to optimize the oxidation process. By controlling oxidation parameters (temperature, time, oxygen concentration, catalyst presence), the material achieves the desired functionality and polarity while minimizing negative effects on viscosity and color. The parameter optimization allows selective enhancement of functional groups without excessive oxidation
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 resulting hardened or oxidized olefin wax compositions exhibit improved hardness and low viscosity, suitable for various applications like polishes and coatings, while maintaining adequate flow characteristics.
Implementation Method 1
oxidation of hydrocarbon waxes generally leads to compromised physical properties... oxidation changes the chemical compositions via a free-radical mechanism, which converts hydrocarbon molecules of waxes into esters, acids, and other minor components
Data Source
AI summary
In one embodiment, we disclose hardened olefin waxes and processes for preparing them. In another embodiment, we disclose oxidized olefin waxes having low viscosity and processes for preparing them. The waxes are suitable for use as polishes, coatings, or inks, among other uses.