Flame retardant polytrimethylene terephthalate composition
View Patent ↗Improved flame retardant polytrimethylene terephthalate compositions are provided by including a melamine cyanurate flame retardant additive.
1. A polytrimethylene terephthalate-based composition consisting essentially of: (a) polytrimethylene terephthalate resin, and (b) from about 0.1 to about 15 wt % of a melamine cyanurate flame retardant additive (based on the total composition weight).
2. The polytrimethylene terephthalate-based composition of claim 1 , wherein the melamine cyanurate is a non-halogenated melamine cyanurate.
3. The polytrimethylene terephthalate-based composition of claim 1 , wherein the melamine cyanurate is granular with an average particle size of less than about 10 micrometers.
4. The polytrimethylene terephthalate-based composition of claim 1 consisting essentially of from about 0.5 to about 10 wt % of a melamine cyanurate (based on total composition weight).
5. The polytrimethylene terephthalate-based composition of claim 1 consisting essentially of from about 2 to about 6 wt % of a melamine cyanurate (based on total composition weight).
6. The polytrimethylene terephthalate-based composition of claim 1 , wherein the polytrimethylene terephthalate is of the type made by polycondensation of terephthalic acid or acid equivalent and 1,3-propanediol.
7. The polytrimethylene terephthalate-based composition of claim 1 , wherein the polytrimethylene terephthalate is a polytrimethylene phthalate homopolymer.
8. An article made from the polytrimethylene terephthalate-based composition of claim 1 .
9. The article of claim 8 , that is in the form of a fiber.