Glycerin-Modified Amino-Formaldehyde Resins for Low Emission Stability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional amino-formaldehyde resins face issues with formaldehyde emission and storage stability, leading to reduced mechanical and physical properties, as well as increased costs due to the need for higher resin dosages to mitigate these problems.
Innovation Solution
The development of amino-formaldehyde resins using a formulation comprising formaldehyde, glycerin, and at least one compound selected from urea, melamine, or their mixtures, with specific molar ratios and in the absence of sulfonating agents, ethylene glycol, and polyalkylene glycols, which enhances storage stability and reduces formaldehyde emissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional amino-formaldehyde resins are used, then adhesive bonding is achieved, but formaldehyde emissions increase and storage stability decreases
Solution Approach 1:
The patent modifies the chemical composition parameters of the resin by incorporating glycerin and controlling the molar ratios of formaldehyde to amino compounds (urea/melamine) within specific ranges. This parameter optimization reduces formaldehyde emissions while simultaneously improving storage stability, resolving the contradiction between harmful emissions and reliability.
Solution Approach 2:
The invention creates a composite resin system by combining formaldehyde, amino compounds (urea and/or melamine), and glycerin in specific proportions. This composite formulation leverages the beneficial properties of each component: formaldehyde provides crosslinking, amino compounds provide adhesion, and glycerin enhances stability while reducing emissions, thereby achieving both low formaldehyde emissions and high storage stability.
2Object-affected harmful factors
If resin dosage is increased to mitigate formaldehyde emission problems, then emissions are reduced, but manufacturing costs increase
Solution Approach 1:
By optimizing the chemical composition parameters—specifically the molar ratios of formaldehyde to amino compounds and incorporating glycerin at controlled levels—the patent achieves reduced formaldehyde emissions without requiring increased resin dosage. This parameter optimization reduces material costs while meeting emission requirements.
Solution Approach 2:
The patent uses glycerin, a relatively inexpensive and readily available material, to achieve long-term storage stability and reduced emissions. This cost-effective additive provides sustained performance benefits without requiring expensive alternative materials or increased resin quantities.
3Reliability
If storage stability is improved, then resin performance is maintained, but formaldehyde emissions may increase
Solution Approach 1:
The patent simultaneously optimizes multiple parameters: incorporating glycerin to enhance storage stability while controlling the formaldehyde to amino compound molar ratios within specific ranges to limit formaldehyde emissions. This multi-parameter optimization achieves both improved reliability and reduced harmful emissions without compromise.
Solution Approach 2:
The composite resin system combines glycerin with controlled ratios of formaldehyde and amino compounds to create a formulation where glycerin acts as a stabilizer that prevents resin degradation and formaldehyde release over time, thereby achieving both storage stability and low emissions simultaneously.
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 glycerin-modified amino-formaldehyde resins exhibit improved storage stability and physical properties, maintaining mechanical strength while reducing formaldehyde emissions, thus addressing the limitations of conventional formulations.
Implementation Method 1
amino-formaldehyde resin prepared using a formulation comprising formaldehyde, glycerin and at least one compound selected from the group consisting of urea, melamine, and mixtures thereof
Implementation Method 2
the amino-formaldehyde resin functions to adhere the substrate together into the article of manufacture
Data Source
AI summary
Amino-formaldehyde resins may be prepared using formulations including formaldehyde, glycerin and at least one amino compound selected from the group consisting of urea, melamine, and mixtures thereof; under reaction conditions sufficient to prepare a resin, wherein; the amino-formaldehyde resin is prepared in a substantial absence of a sulfonating agent, ethylene glycol, and polyalkylene glycols. If the amino compound is urea, then the urea is present in a molar ratio of formaldehyde to urea ranging from 0.70 to 1.30; if the amino compound is melamine, then the melamine is present in a molar ratio of formaldehyde to melamine ranging from 1.3 to 2.2; and if the amino compound is a mixture of urea and melamine, then the mixture of urea and melamine is present in a molar ratio of formaldehyde to urea and melamine ranging from 0.35 to 1.3.