Biodegradable Marking Material Using Food-Grade Colorants
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Solution Overview
Problem
Current outdoor environmental marking materials, such as standard aerosol spray paints, are non-biodegradable and contain toxic chemicals, posing risks to animals, humans, and the environment, and existing alternatives like edible release agents are not visually distinguishable or effective for marking purposes.
Innovation Solution
A biodegradable environmental marking material comprising vegetable oil (54%-82% by mass) and a propellant (16%-48% by mass) with a food-quality colorant (0.12%-9.5% by mass), contained within a pressurized canister for selective release, providing high opacity and visibility on outdoor surfaces without polluting storm water runoff.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If standard aerosol spray paints are used for outdoor marking, then marking visibility and durability are improved, but environmental toxicity and harm to animals increase
Solution Approach 1:
The patent changes the chemical composition parameters of the marking material by replacing toxic synthetic dyes and solvents with food-quality colorants and edible carrier oils. This substitution maintains the marking function while eliminating environmental toxicity, allowing the material to be safely dispersed in outdoor environments without harming animals or contaminating stormwater runoff
Solution Approach 2:
The patent converts the previously harmful property of persistence in the environment into a beneficial temporary marking solution. By using biodegradable ingredients that naturally break down, the marking material provides sufficient visibility for its intended purpose while automatically eliminating itself after use, preventing long-term environmental accumulation and toxicity
2Object-affected harmful factors
If edible release agents are used for marking, then environmental safety is improved, but marking visibility and effectiveness deteriorate
Solution Approach 1:
The patent creates a composite marking material combining a carrier phase (edible oil or water with propellant) and a colorant phase (food-quality colorant). This composite structure leverages the safety of edible ingredients while incorporating highly visible colorants that provide sufficient opacity and contrast for effective outdoor marking, thereby achieving both environmental safety and marking effectiveness simultaneously
Solution Approach 2:
The patent utilizes food-quality colorants that provide vivid, high-contrast colors visible against outdoor surfaces. These colorants, while safe for environmental dispersion, are formulated to deliver adequate opacity and visual distinction, resolving the contradiction between safety and visibility by selecting colorants that meet both criteria
3Duration of action of stationary object
If water-based colorants are used on snow, then biodegradability is improved, but visibility duration deteriorates compared to oil-based colorants
Solution Approach 1:
The patent changes the physical state parameters of the marking material by offering both water-based and oil-based formulations. The oil-based version provides extended visibility duration on snow surfaces, while the water-based version offers faster biodegradation. Users can select the appropriate formulation based on whether priority is given to visibility duration or biodegradation rate, resolving the contradiction through parameter variation
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 solution provides a safe, environmentally friendly, and effective method for temporarily marking outdoor locations, ensuring high visibility and biodegradability, reducing environmental harm and animal risk, with the oil-based colorants offering longer visibility on snow compared to water-based ingredients.
Implementation Method 1
pressurized hand held canister having a valve assembly with an actuator and aperture through which the material is selectively released
Implementation Method 2
the oil-based colorants offering longer visibility on snow compared to water-based ingredients
Data Source
AI summary
Disclosed herein is an improved marking material, consisting essentially of food quality colorant (such as food coloring), and a carrier (such as water, or vegetable oil or canola oil). A method for using this material for the marking of environmental locations is also disclosed. In one form the material also comprises a propellant, all contained within a pressurized aerosol canister. The aerosol canister embodiment having a valve assembly connected to an actuator and aperture for selectively releasing the marking material. In another form, a pump-style spray bottle is utilized, and in another form a larger fluid container, pump and spray-wand type dispersal unit such as the devices commonly used in lawn and garden care, or equivalent apparatus may be utilized. In these forms, the material may consist of water-based food coloring and/or oil-based food coloring and vegetable oil depending on whether the application is dry surface or snow.