Fire-retarded polycarbonate resin composition
View Patent ↗Improved fire-retarded properties can be imparted to fiber reinforced polycarbonate resin composition by incorporating into the polycarbonate an effective flame-retardant amount of a combination of perfluoroalkane sulfonate and talc.
1. A composition consisting essentially of a polycarbonate resin and an effective flame-retardant amount of a combination of a perfluoroalkane sulfonate flame retardant material and talc;
wherein the resin composition has a flame rating of V-0 in the Underwriter's laboratory UL-94 protocol when measured on a test specimen of about 0.062 inch by about 0.5 inch by about 5 inch dimensions.
2. The composition according to claim 1 , wherein the talc is present in an amount effective to render the resin composition a flame rating of V-0 in the Underwriter's laboratory UL-94 protocol when measured on a test specimen of about 0.062 inch by about 0.5 inch by about 5 inch dimensions.
3. The composition of claim 1 , wherein the perfluoroalkane sulfonate is present in an amount effective to render the resin composition a flame rating of V-0 in the Underwriter's laboratory UL-94 protocol when measured on a test specimen of about 0.062 inch by about 0.5 inch by about 5 inch dimensions.
4. The composition according to claim 1 , wherein the perfluoroalkane sulfonate is potassium perfluorobutane sulfonate.
5. The composition according to claim 3 , wherein the talc alone is present in an amount effective to render the resin composition a flame rating of V-0 in the Underwriter's laboratory UL-94 protocol when measured on a test specimen of about 0.062 inch by about 0.5 inch by about 5 inch dimensions.
6. The composition according to claim 1 , wherein the perfluoroalkane sulfonate is present in an amount of 0.05 to 5 parts by weight and the talc is present in an amount of about 0.05 to 10 parts by weight.
7. The composition according to claim 1 , further comprising at least a reinforcing fiber.
8. The composition according to claim 7 , wherein the reinforcing fiber is present in an amount of up to 30 parts by weight.
9. The composition according to claim 7 , wherein the reinforcing fiber is present in an amount of up to 20 parts by weight.
10. The composition according to claim 7 , wherein the reinforcing fiber is present in an amount of up to 10 parts by weight.
11. The composition according to claim 7 , wherein the reinforcing fiber is selected from glass fibers, carbon fibers, or combinations thereof.
12. An article comprising the composition of claim 1 .
13. A method for making a fire-retarded polycarbonate resin composition comprising the steps of compounding the resin with an effective flame-retardant amount of a perfluoroalkane sulfonate flame retardant component and talc;
wherein the composition consists essentially of the polycarbonate resin, the perfluoroalkane sulfonate flame retardant and the talc;
wherein the resin composition has a flame rating of V-0 in the Underwriter's laboratory UL-94 protocol when measured on a test specimen of about 0.062 inch by about 0.5 inch by about 5 inch dimensions.
14. The method according to claim 13 , wherein the talc alone is present in an amount effective to render the resin composition a flame rating of V-0 or V-1 in the Underwriter's laboratory UL-94 protocol when measured on a test specimen of about 0.062 inch by about 0.5 inch by about 5 inch dimensions.
15. The method according to claim 14 , wherein the talc alone is present in an amount effective to render the resin composition a flame rating of V-0 in the Underwriter's laboratory UL-94 protocol when measured on a test specimen of about 0.062 inch by about 0.5 inch by about 5 inch dimensions.
16. The method according to claim 13 , wherein the perfluoroalkane sulfonate is present in an amount effective to render the resin composition a flame rating of V-0 or V-1 in the Underwriter's laboratory UL-94 protocol when measured on a test specimen of about 0.062 inch by about 0.5 inch by about 5 inch dimensions.
17. The method according to claim 16 , wherein the perfluoroalkane sulfonate is present in an amount effective to render the resin composition a flame rating of V-0 in the Underwriter's laboratory UL-94 protocol when measured on a test specimen of about 0.062 inch by about 0.5 inch by about 5 inch dimensions.
18. The method according to claim 13 , wherein the perfluoroalkane sulfonate is present in an amount of 0.1 to 5 parts by weight and the talc is present in an amount of about 0.1 to 10 parts by weight.
19. A method to increase the flame retardant property of a polycarbonate composition containing an amount of at least a perfluoroalkane sulfonate flame retardant component, to render the composition a flame rating of at least V-0 in the Underwriter's Laboratory UL-94 protocol when measured on a test specimen of about 0.062 inch by about 0.5 inch by about 5 inch dimensions,
said method comprises blending into said composition an effective flame-retardant amount talc;
wherein the polycarbonate composition consists essentially of the polycarbonate resin, the perfluoroalkane sulfonate flame retardant and the talc.
20. The method of claim 19 , wherein said effective flame-retardant amount of talc is in an amount of about 0.1 to 10 parts by weight.
21. The method of claim 19 , wherein said perfluoroalkane sulfonate is present in an amount of 0.1 to 5 parts by weight.
22. A composition comprising a polycarbonate resin and an effective flame-retardant amount of a combination of a flame retardant material and talc;
wherein the polycarbonate resin comprises a mixture of linear and branched polycarbonates.