Flame retardants for textile applications
AssigneeAlbemarle Corporation
InventorsRajeev S. Mathur, Jon Shannon Reed, Daniel A. De Schryver, John Randall Chaya
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Abstract
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.
Claims20
An aqueous flame retardant dispersion comprising
- water;
- a brominated flame retardant which has an average particle size of about 20 μm or less, wherein the brominated flame retardant contains aromatically-bound bromine and is selected from a) brominated styrenic polymers which have weight average molecular weights of about 650 to about 950,000 and a bromine content of about 60 wt % or more, and/or b) a brominated anionic chain transfer vinyl aromatic polymer which contains about 70 wt % or more bromine;
- at least one dispersant;
- at least one wetting agent;
- and
- at least one thickener;
- wherein the flame retardant dispersion contains about 25 wt % or more brominated flame retardant, based on the total weight of the dispersion.
A process for forming an aqueous flame retardant dispersion, which process comprises combining
- water;
- a brominated flame retardant which has an average particle size of about 20 μm or less, wherein the brominated flame retardant contains aromatically-bound bromine and is selected from a) brominated styrenic polymers which have weight average molecular weights of about 650 to about 950,000 and a bromine content of about 60 wt % or more, and/or b) a brominated anionic chain transfer vinyl aromatic polymer which contains about 70 wt % or more bromine;
- at least one dispersant;
- at least one wetting agent;
- and
- at least one thickener;
- wherein the flame retardant dispersion contains about 25 wt % or more brominated flame retardant, based on the total weight of the dispersion.
A coating composition comprising
- water;
- a brominated flame retardant which has an average particle size of about 20 μm or less, wherein the brominated flame retardant contains aromatically-bound bromine and is selected from a) brominated styrenic polymers which have weight average molecular weights of about 650 to about 950,000 and a bromine content of about 60 wt % or more, and/or b) a brominated anionic chain transfer vinyl aromatic polymer which contains about 70 wt % or more bromine;
- at least one dispersant;
- at least one wetting agent;
- at least one thickener;
- at least one flame retardant synergist;
- and
- at least one coating resin;
- wherein the coating composition contains about 4 wt % or more brominated flame retardant, based on the total weight of the coating composition.
Dependencies are inferred from the claim text.