Aqueous Flame Retardant Dispersion for Low-Binder Textile Finishing
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Solution Overview
Problem
Existing flame retardant formulations for textiles have high bromine content, require excessive binder, leading to inefficiencies and drawbacks such as streak marks and excessive dripping, and are not stable in aqueous solutions.
Innovation Solution
Development of stable aqueous dispersions of tris(tribromophenoxy)-s-triazine and tetrabromobisphenol A bis(2,3-dibromopropyl ether) with reduced binder content, using nonionic or anionic surface-active agents and other additives to enhance compatibility and stability, allowing for efficient flame retardation without non-aqueous solvents.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing aromatic bromine containing formulations are used to achieve flame retardation, then flame retardant effect is improved, but binder content must be increased to 50 wt % or more of total formulation
Solution Approach 1:
The invention changes the chemical parameters of the flame retardant by using specific aromatic bromine compounds (FR-245 and FR-720) with optimized molecular structures. These compounds achieve superior flame retardant efficiency with lower add-on levels, reducing the required binder content from 50 wt % or more to significantly lower amounts while maintaining effective flame protection.
Solution Approach 2:
The invention employs composite flame retardant formulations combining aromatic bromine compounds with cyanurate groups and other synergistic components. This composite approach enhances flame retardant efficiency per unit weight, allowing reduced binder content while achieving the required fire safety performance.
2Reliability
If high binder content (50 wt % or more) is used to fix flame retardant agents to textile, then flame retardation is achieved, but flammability and dripping increase
Solution Approach 1:
The invention changes the chemical composition parameters by selecting aromatic bromine compounds (FR-245 and FR-720) with superior flame retardant efficiency. These compounds provide effective flame protection at lower add-on levels, reducing the harmful effects of excessive binder such as increased flammability and dripping during combustion.
Solution Approach 2:
The invention converts the potential harm of binder presence into benefit by using highly efficient flame retardant compounds that require minimal binder. The aromatic bromine compounds with cyanurate groups provide such superior efficiency that the reduced binder content actually improves performance by decreasing flammability and dripping while maintaining flame retardation.
3Reliability
If aromatic bromine compounds are used to achieve flame retardation, then flame retardant effect is improved, but streak marks appear on dark fabrics
Solution Approach 1:
The invention changes the physical and chemical parameters of the flame retardant formulation by using specific aromatic bromine compounds (FR-245 and FR-720) with optimized solubility and dispersion characteristics. These compounds can be formulated to provide uniform distribution on textile substrates, reducing or eliminating streak marks on dark fabrics while maintaining effective flame retardation.
4Reliability
If existing flame retardant formulations are used, then flame retardation is achieved, but excessive dripping occurs during combustion of thermoplastic fibers
Solution Approach 1:
The invention changes the thermal and chemical parameters by using aromatic bromine compounds (FR-245 and FR-720) with superior thermal stability and flame retardant efficiency. These compounds effectively suppress dripping during combustion of thermoplastic fibers by forming protective char layers and reducing fuel availability, while maintaining effective flame retardation at lower add-on levels.
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 dispersions provide effective flame retardation with reduced binder content, maintaining stability and preventing streak marks and dripping, while maintaining textile properties and performance even after washing.
Implementation Method 1
The invention relates to flame retardant aqueous dispersions... which exhibit a high compatibility with textile materials... using nonionic or anionic surface-active agents
Implementation Method 2
Tris(tribromophenoxy)-s-triazine... provides high FR efficiency and good thermal stability... FR-245 has a higher initial decomposition temperature than Decabromodiphenyl oxide
Data Source
AI summary
Flame retardant aqueous dispersions or suspensions comprising tris(tribromophenoxy)-s-triazine (TTBT) or tetrabromobisphenol A bis(2,3-dibromopropyl ether) (TBBPE) or a mixture thereof and one or more nonionic or anionic surface active agent(s) and/or wetting agent(s) used in textile are described. The flame retardants exhibit high compatibility with textile materials and are stable in aqueous solutions.