Flame retardant polybutylene terephthalate
AssigneeHoechst Celanese Corporation
InventorsArie Hochberg, Nancy C. Eickman, Frank Haimbach, IV
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Abstract
A flame-resistant polybutylene terephthalate molding composition has vastly improved fatigue strength and improved melt flow by incorporating therein a halogenated epoxy flame retardant represented by the general formula: ##STR1## wherein an n is the degree of polymerization and the halogenated epoxy resin has a molecular weight of at least about 20,000 to 40,000; X is a chlorine or bromine atom, and i is an integer of from 1-4.
Claims20
A molding composition comprising a polybutylene terephthalate and a halogenated flame retardant comprising a halogenated epoxy resin having the general structure of formula I ##STR3## wherein n is an integer describing the degree of polymerization and is sufficient to provide said brominated epoxy resin with a molecular weight of at least about 20,000 to about 40,000;
- X is a chlorine or bromine atom;
- and i is the same or different for each aromatic substituent and is an integer of from 1-4.
Dependencies are inferred from the claim text.