Brominated Flame Retardant Dispersion for Textile Coating Stability
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Solution Overview
Problem
Current flame-retardant technologies for textiles do not provide sufficient and consistent flame retardancy, as measured by NFPA-701 and FMVSS-302 tests, necessitating the development of more effective flame-retardant coatings and dispersions.
Innovation Solution
The use of aqueous flame retardant dispersions containing brominated aromatic polymeric flame retardants, with aromatically-bound bromine, and a combination of dispersants, wetting agents, and thickeners, applied to textile substrates to achieve enhanced flame retardancy, where the brominated flame retardants have a particle size of 20 μm or less and comprise 50 wt % or more of the dispersion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If brominated flame retardants with high concentration are used, then flame retardant performance is improved, but dispersion stability and coating uniformity may deteriorate
Solution Approach 1:
The patent introduces dispersants and wetting agents as intermediary substances that mediate between the high-concentration brominated flame retardant particles and the aqueous medium, enabling stable dispersion of 50 wt% or more flame retardant concentration while maintaining coating uniformity and preventing particle aggregation
Solution Approach 2:
The patent optimizes the particle size parameter of brominated flame retardants to 5-20 μm, which balances flame retardant effectiveness with dispersion stability, and adjusts the concentration parameter to 50 wt% or more in the dispersion, achieving both high performance and compositional stability
Data Source
AI summary
This invention provides aqueous flame retardant dispersions comprising water, a brominated flame retardant containing aromatically-bound bromine, at least one dispersant, at least one wetting agent, and at least one thickener. The brominated flame retardant has an average particle size of about 20 μm or less. The flame retardant dispersion contains about 50 wt % or more of brominated polymeric flame retardant, based on the total weight of the dispersion. Also provided are coating compositions, processes for forming flame retardant dispersions, processes for forming coating compositions, and processes for applying the coating compositions to textile substrates.