Bio-based Coatings from Spent Coffee Grounds Oil
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Solution Overview
Problem
The coating market is dominated by petroleum-based non-biodegradable epoxy and urethane coatings, and there is a growing interest in developing bio-based and biodegradable alternatives for packaging applications that can provide gas/moisture barriers, grease/oil/stain resistance, and corrosion protection while being environmentally friendly.
Innovation Solution
The development of bio-based biodegradable coatings using oil extracted from spent coffee grounds, which is epoxidized and used to create epoxy and polyurethane coatings with tailored mechanical, thermal, and barrier properties suitable for various packaging materials such as plastics, paper, and metals, utilizing polyacids, polyamines, and cyclocarbonates as curing agents.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If petroleum-based epoxy and urethane coatings are used, then barrier properties and durability are improved, but environmental sustainability and biodegradability deteriorate
Solution Approach 1:
The patent changes the chemical composition parameters by using bio-based oils (coffee, soybean, canola, corn, or sunflower) instead of petroleum-based oils, while maintaining the epoxy coating structure and performance characteristics through controlled epoxidation and curing processes
Solution Approach 2:
The patent creates composite coatings by combining bio-based oils with epoxy resins and curing agents, producing a hybrid material that integrates the biodegradability of natural oils with the protective properties of epoxy polymers
2Object-affected harmful factors
If vegetable oils are used for bio-based coatings, then biodegradability is improved, but food competition and cost effectiveness deteriorate
Solution Approach 1:
The patent extracts and utilizes spent coffee grounds, a waste product from the beverage industry, as the oil source instead of competing with food production for vegetable oils, thereby eliminating food competition while maintaining biodegradability
Solution Approach 2:
The patent recovers and repurposes spent coffee grounds (a waste material after coffee brewing) as the oil source for coatings, transforming it from a discarded byproduct into a valuable renewable resource
3Object-affected harmful factors
If spent coffee grounds oil is used, then environmental sustainability is improved, but coating performance consistency deteriorates
Solution Approach 1:
The patent controls and standardizes the epoxidation process parameters and curing conditions to ensure consistent coating performance despite the natural variability in coffee oil composition, achieving reliable barrier properties and durability
Solution Approach 2:
The patent uses controlled epoxidation chemistry as an intermediary process that transforms the variable coffee oil into a standardized epoxy-containing polymer with consistent performance characteristics
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 coatings offer improved barrier properties, biodegradability, and environmental sustainability by utilizing renewable resources, reducing food competition for vegetable oils, and providing cost-effective solutions for different packaging applications.
Implementation Method 1
which is epoxidized and used to create epoxy and polyurethane coatings
Data Source
AI summary
Disclosed herein are coatings and methods of making and use thereof. For example, disclosed herein are epoxy coatings comprising a (co)polymer derived from an epoxide and an epoxide curing agent; wherein the epoxide comprises an epoxidized biomass oil. Also disclosed herein are non-isocyanate polyurethane coatings comprising a (co)polymer derived from an cyclocarbonate and an amine curing agent; wherein the cyclocarbonate is derived from an epoxidized biomass oil. In the coatings described herein, the epoxidized biomass oil comprises an oil extracted from a biomass, which is an extracted biomass oil, and wherein said extracted biomass oil has been epoxidized; wherein the biomass comprises food waste, coffee beans, or a combination thereof.