PVAm Formaldehyde-Scavenging Formulation Without Agglomeration
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Solution Overview
Problem
Existing formaldehyde-scavenging formulations face issues such as agglomeration, which can lead to clogged filters and undesirable textural effects, and they often require modifications to manufacturing processes to be compatible with construction products, while also needing to meet stringent emission standards without introducing additional health or environmental risks.
Innovation Solution
A formaldehyde-scavenging formulation comprising polyvinylamine (PVAm) or its copolymer, a non-ionic or cationic stabilized binder and/or crosslinker, and a non-ionic stabilized fire retardant, formulated to avoid agglomeration and maintain compatibility with existing manufacturing processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If anionic stabilized binders and anionic stabilized fire retardants are used in combination with cationic scavengers, then formaldehyde scavenging function is improved, but agglomeration occurs leading to clogged filters and textural defects
Solution Approach 1:
The patent changes the stabilization parameter from anionic to nonionic, eliminating the electrostatic attraction between oppositely charged components that causes agglomeration. The nonionic stabilization maintains the formaldehyde scavenging function while preventing the harmful agglomeration effect.
Solution Approach 2:
The patent introduces nonionic dispersants as intermediary agents that mediate between the cationic scavenger and anionic fire retardant/binder components. These dispersants prevent direct interaction between oppositely charged species, thereby preventing agglomeration while allowing all functional components to coexist.
2Object-affected harmful factors
If new formaldehyde-scavenging formulations are developed to meet emission standards, then emission control is improved, but compatibility with existing manufacturing protocols may be compromised
Solution Approach 1:
The formulation is designed to be universally compatible with existing manufacturing processes for construction products. The composition can be applied to various substrates including veils, insulation boards, and wood-based panels using standard manufacturing protocols, while simultaneously achieving stringent emission standards.
Solution Approach 2:
The patent modifies the chemical parameters of the scavenger system by using nonionic stabilization instead of anionic, which allows the formulation to work within existing manufacturing temperature and processing conditions without requiring protocol modifications, while still achieving the desired emission reduction.
3Object-affected harmful factors
If formulation components are combined to achieve formaldehyde reduction, then emission standards are met, but additional health and safety concerns may be introduced
Solution Approach 1:
The patent employs a formulation approach where the scavenger components are designed to be safe and environmentally benign. The nonionic stabilized formulation avoids the use of hazardous substances, allowing the product to fulfill its formaldehyde reduction function without introducing new health or safety concerns during manufacturing or use.
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 formulation effectively reduces formaldehyde emissions, prevents agglomeration, and meets stringent emission standards without altering existing manufacturing protocols, ensuring safety and environmental compatibility.
Implementation Method 1
a polyvinylamine (PVAm) formaldehyde scavenger... effectively reduces formaldehyde emissions
Implementation Method 2
a non-ionic stabilized fire retardant... prevents agglomeration
Data Source
AI summary
The present invention is concerned with improved formaldehyde-scavenging formulations, and uses of same in veils and construction products including ceiling tiles, boards including insulation boards, particularly phenolic insulation boards, and panels and boards including wood panels and wood boards, together with methods for reduction of formaldehyde emissions from a construction product.