Flameproofing additives for thermoplastic synthetic resins
AssigneeChemische Fabrik Kalk GmbH
InventorsErnst Neukirchen, Utto Kerscher
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Abstract
A flameproofing additive for thermoplastic synthetic resin compositions comprises 60-30 wt. % of a lower melting, flame retardant organic bromine compound which melts at 80.degree.-200.degree. C. and 40-70 wt. % of a higher melting, flame retardant organic bromine compound which melts at 280.degree.-400.degree. C., each of the flame retardant, organic bromine compounds being thermally stable at the processing temperatures to which the thermoplastic synthetic resin is to be exposed after being combined with the flameproofing additive.
Claims18
A flameproofing additive for thermoplastic synthetic resin compositions, comprising 60-30 wt. % of a lower-melting, flame retardant brominated aryl-containing organic bromine compound which melts at 80.degree.-200.degree. C. and 40-70 wt. % of a higher-melting, flame retardant brominated aryl-containing organic bromine compound which melts at 280.degree.-400.degree. C., each of the flame retardant organic bromine compounds being thermally stable at the processing temperature to which the thermoplastic synthetic resin is to be exposed after being combined with the flameproofing additive.
A flame retardant composition comprising a pulverulent or granulated thermoplastic synthetic resin which is to be further processed by heating and an effective amount of a flameproofing additive comprising 60-30 wt. % of a lower-melting, flame retardant brominated aryl-containing organic bromine compound which melts at the temperature of the heating treatment to which the synthetic resin will be exposed and 40-70 wt. % of a higher-melting, flame retardant brominated aryl-containing organic bromine compound which remains unmelted at said temperature.
Dependencies are inferred from the claim text.