Protein Polyurethane Alloy Layers for Leather-Like Strength
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The production of natural leather involves significant environmental and social concerns, including resource consumption and animal welfare issues, and there is a decreasing availability of high-quality hides, necessitating the development of alternative materials.
Innovation Solution
Protein polyurethane alloys are developed, where proteins are dissolved in the hard phase of polyurethane, enhancing mechanical properties and mimicking the look and feel of natural leather, with specific embodiments featuring improved Young's modulus, DMA transition temperatures, and moisture vapor transmission rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If natural leather is produced from animal skins, then the aesthetic qualities and mechanical properties of leather are achieved, but environmental pollution, resource consumption, and animal welfare issues occur
Solution Approach 1:
The patent changes the chemical composition parameters by replacing animal-derived collagen with plant-based proteins (soy, pea, wheat, rice) and synthetic polyurethane components, fundamentally altering the material's origin while maintaining leather-like properties. This substitution resolves the environmental harm by eliminating livestock farming requirements while preserving the desired mechanical strength and aesthetic qualities through carefully controlled compositional parameters
Solution Approach 2:
The invention creates a composite material system combining plant-based proteins with polyurethane polymers. The plant protein provides structural framework and aesthetic characteristics similar to natural leather, while the polyurethane matrix enhances durability and mechanical properties. This composite approach allows simultaneous achievement of strength requirements and environmental sustainability by leveraging the complementary properties of different material components
2Strength
If natural leather is produced from animal skins, then high-quality leather properties are achieved, but the availability of hides is decreasing
Solution Approach 1:
The patent fundamentally changes the raw material source from animal hides to plant-based proteins and synthetic polymers. By altering the compositional parameters to use readily available plant proteins (soy, pea, wheat, rice) combined with polyurethane, the invention decouples leather production from livestock farming, thereby eliminating the constraint of decreasing hide availability while maintaining high-quality leather properties through optimized material formulation
Solution Approach 2:
The invention creates an artificial copy of natural leather by replicating its aesthetic qualities, mechanical properties, and structural characteristics using plant-based proteins and polyurethane. The plant protein-polyurethane composite mimics the appearance, texture, and performance of animal leather without requiring animal hides, thus providing an unlimited supply alternative that copies the essential features of natural leather while avoiding resource constraints
3Strength
If protein is dissolved in polyurethane to enhance mechanical properties, then Young's modulus increases, but the complexity of material formulation increases
Solution Approach 1:
The patent systematically adjusts formulation parameters including plant protein type (soy, pea, wheat, rice), protein concentration (10-50 wt%), polyurethane molecular weight, and processing conditions to optimize Young's modulus. By establishing specific parameter ranges and relationships (e.g., protein content correlated with stiffness requirements), the invention manages formulation complexity through controlled variable adjustment while achieving enhanced mechanical properties
Solution Approach 2:
The invention applies different plant protein types and concentrations to specific application requirements. For applications requiring higher stiffness, formulations with greater protein content (30-50 wt%) are used, while applications requiring flexibility employ lower protein content (10-30 wt%). This localized optimization of formulation parameters allows tailored mechanical property achievement without requiring complete reformulation for each application, thereby managing complexity through selective parameter adjustment
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 protein polyurethane alloys offer enhanced mechanical properties and aesthetic qualities similar to natural leather, addressing environmental and social concerns by providing a sustainable alternative with improved strength, flexibility, and durability.
Implementation Method 1
a protein polyurethane alloy comprising a protein dissolved within a polyurethane
Implementation Method 2
a protein polyurethane alloy comprising a protein dissolved within a polyurethane where the protein is a protein other than a soy protein
Data Source
AI summary
Protein polyurethane alloys including one or more proteins dissolved within one or more polyurethanes. The protein polyurethane alloy may have one or more mechanical properties that are superior to the polyurethane in the absence of protein. The protein polyurethane alloys may be incorporated into a layered material including one or more protein polyurethane alloy layers.