Ignition resistant polycarbonate polyester composition
AssigneeGeneral Electric Company
InventorsSubodh Pal, Abbas Alli Shaikh, Gomatam Ravi, Deepak Ramaraju
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Abstract
An ignition resistant thermoplastic composition comprising: (a) structural units derived at least one substituted or unsubstituted polycarbonate; (b) a polyester comprising structural units is derived from xylene glycol; (c) 1 weight percent to about 40 weight percent based on the total weight of the composition of a flame retardant compound is disclosed. Also disclosed is a method of making said thermoplastic compositions and articles derived from said composition.
Claims29
A thermoplastic composition comprising:
- (a) structural units derived from at least one substituted or unsubstituted polycarbonate;
- (b) a polyester comprising structural units is derived from xylene glycol;
- (c) from 1 weight percent to about 40 weight percent based on the total weight of the composition of a flame retardant compound,
- wherein the composition is transparent, and
- wherein the components (a), (b) and (c) are in sufficient amounts to make the composition ignition resistant.
A process to prepare an ignition resistant thermoplastic composition comprising:
- (a) structural units derived from at least one substituted or unsubstituted polycarbonate;
- (b) a polyester comprising structural units is derived from xylene glycol;
- (c) from 1 weight percent to about 40 weight percent based on the total weight of the composition of a flame retardant compound;
- wherein the composition is transparent and wherein the process comprises the steps of:
- i. mixing the polycarbonate and polyester to form a first mixture;
- and
- ii. heating the first mixture to form the transparent composition.
A thermoplastic composition comprising:
- (a) structural units derived from at least one substituted or unsubstituted polycarbonate;
- (b) a polyester comprising structural units is derived from xylene glycol;
- (c) from 1 weight percent to about 40 weight percent based on the total weight of the composition of a flame retardant compound;
- wherein the flame retardant compound is at least one selected from the group consisting of brominated flame retardants and phosphorus containing compounds;
- wherein the composition is transparent and wherein the components (a), (b) and (c) are in sufficient amounts to make the composition ignition resistant.
Dependencies are inferred from the claim text.