Plant-Based Paint Binder for Drinking Water Pipes
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Solution Overview
Problem
Existing metallic elements with petroleum-based paint binders do not meet ecological standards and are not suitable for contact with drinking water, as they contain bisphenol and other harmful substances.
Innovation Solution
A metallic element with a paint layer using binders derived from renewable natural resources, such as vegetable oils and resins, and a sacrificial metal coating to ensure corrosion protection and safety for contact with drinking water.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If petroleum-based binders are used in paint formulations, then the paint provides good adhesion and corrosion protection, but the paint contains harmful substances like bisphenol and is not suitable for contact with drinking water
Solution Approach 1:
The patent changes the chemical composition parameters of the binder by replacing petroleum-based materials with plant-based oils (linseed, tung, soya, rapeseed, sunflower, or their hydrogenated derivatives) and natural resins (rosin, copal, dammar, or their modified derivatives). This substitution maintains the protective function while eliminating harmful substances like bisphenol, making the paint safe for drinking water contact applications
Solution Approach 2:
The patent employs drying oils that undergo oxidation polymerization to form the protective film. The oil-based binders oxidize and crosslink upon exposure to air, creating a durable, adherent coating that provides corrosion protection without containing harmful petrochemical substances
2Object-affected harmful factors
If plant-based oils and resins are used as binders, then the paint becomes ecological and safe for drinking water contact, but the adhesion and protective properties may be reduced
Solution Approach 1:
The patent creates a composite binder system combining plant-based oils with natural resins (rosin, copal, dammar) and their modified derivatives. This composite formulation synergistically enhances adhesion and protective properties while maintaining ecological safety. The resin components provide structural integrity and bonding strength that complements the oil-based matrix
Solution Approach 2:
The patent modifies the chemical structure of natural oils through hydrogenation to adjust drying characteristics and film formation properties. By controlling the degree of hydrogenation and selecting specific oils (linseed, tung, soya, etc.), the formulation optimizes both adhesion and protective performance while retaining plant-based ecological benefits
3Object-affected harmful factors
If the paint formulation uses natural resins and oils, then the binder content must be optimized to balance ecological benefits with performance requirements
Solution Approach 1:
The patent specifies precise weight percentage ranges for binder components (20-50% total, with oils at 10-40% and resins at 10-30%) to optimize performance while maintaining ecological compliance. These parameter specifications provide a systematic framework that balances ecological benefits with protective performance, reducing formulation complexity through defined compositional guidelines
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 an ecological and safe paint layer for metallic elements, ensuring compliance with regulatory standards for contact with drinking water and extending the lifespan of the sacrificial metal coating while preventing corrosion.
Implementation Method 1
a sacrificial metal coating layer (11), in particular based on zinc, placed on the surface of the base body (7)
Implementation Method 2
the paint layer (13) being porous, in particular, in the case where the element comprises a coating layer based on a sacrificial metal such as zinc, the paint layer regulates and/or limits the rate of consumption of the coating layer
Data Source
AI summary
The invention relates to an element comprising: a metal base body (7), and a layer of paint (13) extending over at least part of the base body, the paint of the layer of paint having a formulation comprising a binder. The binder comprises or consists entirely of materials produced from renewable natural resources of plant or animal origin. The invention applies to cast-iron pipe elements.