Mixed Ether Melting Range via Fatty Alcohol Blending
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Solution Overview
Problem
There is a need for a petroleum jelly substitute with a broad melting range similar to petroleum jelly, which is neutral in chemical terms and derived from renewable raw materials, as petroleum jelly accumulates in the body and can cause skin issues due to its mineral oil content.
Innovation Solution
A mixed ether with a melting range of -25°C to +70°C, obtained through a condensation reaction of unbranched fatty alcohols with chain lengths of 12 to 18 carbon atoms, isostearyl alcohol, a fatty alcohol with 20 or 22 carbon atoms, and optionally a fatty alcohol with 8 or 10 carbon atoms, providing a broad melting range and improved application properties compared to petroleum jelly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If petroleum jelly is used as a base in cosmetic preparations, then good topical compatibility and broad melting range are achieved, but accumulation in the body and skin pore closure occur leading to harmful effects
Solution Approach 1:
The patent changes the chemical composition parameters by using plant-derived fatty alcohols (C12-C22) instead of petroleum-derived hydrocarbons. This fundamental parameter change maintains the desired melting range and topical compatibility while eliminating the harmful accumulation effects of mineral oils in the body.
Solution Approach 2:
The patent converts the limitation of plant-derived materials (narrow melting range) into a benefit by carefully selecting and combining multiple fatty alcohols with different chain lengths. This combination approach not only achieves the desired broad melting range but also creates a renewable, biodegradable alternative that eliminates the harmful effects of petroleum jelly.
2Object-generated harmful factors
If renewable raw materials are used to replace petroleum jelly, then accumulation in the body is reduced, but the melting range becomes narrow
Solution Approach 1:
The patent merges multiple plant-derived fatty alcohols with different carbon chain lengths (C12, C14, C16, C18, C20, C22) into a single composite material. This combination allows the final product to exhibit a broad melting range comparable to petroleum jelly, while maintaining the renewable and biodegradable properties of plant-derived materials.
Solution Approach 2:
The patent creates a composite material from multiple fatty alcohol components, each contributing different melting characteristics. The synergistic combination of these components produces a material with a broad melting range that neither individual component could achieve alone, while maintaining renewable raw material status.
3Object-generated harmful factors
If plant oil and beeswax mixtures are used as petroleum jelly substitutes, then renewable raw materials are utilized, but large-scale production is limited by beeswax availability
Solution Approach 1:
The patent extracts and eliminates the production bottleneck by removing beeswax from the formulation. Instead, it uses exclusively plant-derived fatty alcohols that can be produced on a large scale through established industrial processes, thereby maintaining renewable raw material usage while enabling unlimited production capacity.
Solution Approach 2:
The patent replaces the expensive, limited-availability beeswax with more economical, readily available plant-derived fatty alcohols. This substitution maintains the renewable credential while dramatically improving production scalability and cost-effectiveness for large-scale manufacturing.
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 mixed ether exhibits comparable sensory properties to petroleum jelly while offering enhanced application properties, such as increased foam in surfactant systems and strong occlusive properties, making it a suitable substitute in cosmetic and pharmaceutical preparations.
Implementation Method 1
A mixed ether with a melting range of -25°C to +70°C, obtained through a condensation reaction of unbranched fatty alcohols with chain lengths of 12 to 18 carbon atoms, isostearyl alcohol, a fatty alcohol with 20 or 22 carbon atoms
Implementation Method 2
These position themselves—held via van der Waals-London forces—in parallel with one another and form so-called fringed micelles
Data Source
AI summary
Described herein are mixed ethers and cosmetic and/or pharmaceutical preparations comprising mixed ethers. Certain mixed ethers have a melting range between −25° C. and +70° C., wherein the width of the melting range comprises at least 30 temperature degrees and the maximum of the melting range is 35 ±10° C. These mixed ethers are obtainable for example by condensation reaction of a) 25 to 90% by weight of unbranched fatty alcohols with a chain length of 12 to 19 carbon atoms; b) 5 to 50 by weight of isostearyl alcohol; c) 0 to 35% by weight of a fatty alcohol with a chain length of 20 and/or 22 carbon atoms; and d) 0 to 25% by weight of a fatty alcohol having 8 and/or 10 carbon atoms.