Pre-Reacted Binder Composition to Prevent Gelling in Storage
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Solution Overview
Problem
Current formaldehyde-free binders, such as carbohydrate-based and acrylic acid-poly(vinyl alcohol) binders, face issues like high production costs, slower reaction rates, and compatibility challenges with traditional phenol formaldehyde binders, leading to problems with storage and shipment due to quick gelling and recrystallization.
Innovation Solution
A water-soluble pre-reacted binder composition is developed by reacting carbohydrates with nitrogen-containing components, resulting in a composition with high solid content that is stable and can be stored without gelling, featuring intermediate reaction species and increased molecular weight, allowing for improved compatibility and curing efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If carbohydrate-based binders are used as formaldehyde-free alternatives, then environmental sustainability is improved, but reaction rate deteriorates (slower curing compared to phenol formaldehyde)
Solution Approach 1:
The patent modifies the chemical parameters of carbohydrate-based binders by introducing pre-reaction steps and adjusting molecular weight distributions to accelerate curing rates while maintaining formaldehyde-free composition
Solution Approach 2:
The invention creates composite binder systems combining carbohydrates with other eco-friendly components to achieve both fast reaction rates and environmental sustainability
2Stability of the object's composition
If high solid content binder compositions are formulated, then storage stability is improved (preventing gelling), but viscosity increases
Solution Approach 1:
The patent optimizes the molecular weight distribution and chemical composition parameters to achieve high solid content formulations that remain fluid and stable during storage without premature gelling
Solution Approach 2:
The binder composition is pre-reacted to form stable intermediates that prevent subsequent gelling during storage, allowing high solid content to be maintained without viscosity problems
3Ease of manufacture
If conventional carbohydrate-based binders are used, then cost is reduced (inexpensive precursors), but shelf-life deteriorates (quick gelling and recrystallization)
Solution Approach 1:
The patent applies preliminary pre-reaction treatment to carbohydrate-based binders to create stable intermediate structures that prevent premature gelling and recrystallization, thereby extending shelf-life while maintaining low cost
Solution Approach 2:
The invention modifies molecular weight and compositional parameters of the binder to achieve optimal balance between cost-effectiveness and storage stability
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 pre-reacted binder composition provides improved stability, extended shelf-life, and enhanced curing efficiency, overcoming the limitations of existing binders by maintaining viscosity and preventing premature gelling, while offering superior bonding properties and reduced fading.
Implementation Method 1
comprising the reaction product(s) of (i) at least one carbohydrate component, and (ii) at least one nitrogen-containing component
Data Source
AI summary
The present invention relates to a water-soluble pre-reacted binder composition, a method of its manufacture, a use of said pre-reacted binder composition, a method of manufacturing a collection of matter bound by a polymeric binder, a binder solution or dispersion comprising said pre-reacted binder composition, as well as products comprising the pre-reacted binder composition in a cured state.