POLYCARBONATE COMPOSITIONS

• US 20140058023A1
• Filed: 08/23/2012
• Published: 02/27/2014
• Est. Priority Date: 08/23/2012
• Status: Active Grant

• Current Assignee: SHPP Global Technologies BV (Government of Saudi Arabia)
• Original Assignee: SABIC Global Technologies BV (Government of Saudi Arabia)
• Inventors: Wan, Shun, Shen, Dake, Niu, Yaming, Xi, Ying
• Granted Patent: US 9,732,217 B2
• Time in Patent Office: Days
• US Class Current: 524/127
• CPC Class Codes: C08K 5/523 with hydroxyaryl compounds
• CPC Class Codes: C08L 27/18 Homopolymers or copolymers or tetrafluoroethene
• CPC Class Codes: C08L 51/04 grafted on to rubbers
• CPC Class Codes: C08L 69/00 Compositions of polycarbonates; Compositions of derivatives of polycarbonates
• CPC Class Codes: C08L 83/10 Block- or graft-copolymers containing polysiloxane sequences obtained by polymerising a compound having a carbon-to-carbon double bond on to a polysiloxane C08L51/08, C08L53/00

Abstract

Disclosed herein are methods and compositions of blended polycarbonate resins with improved flame resistance and impact strength. The resulting compositions can be used in the manufacture of articles while still retaining the advantageous physical properties of blended polycarbonate compositions with improved flame resistance and impact strength. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.

Claims

1. A polycarbonate composition comprising:

a. from 20 to 80 weight percent of a first polycarbonate component;

b. from greater than 0 to 25 weight percent of a polysiloxane-polycarbonate block copolymer comprising a polycarbonate block derived from bisphenol A and a diorganopolysiloxane block of the general formula (I);

4. The polycarbonate composition of claim 1, further comprising a high heat polycarbonate component.

5. The polycarbonate composition of claim 4, wherein the high heat polycarbonate component comprises 2-phenyl-3,3-bis(4-hydroxyphenyl)phthalimidine (PPPBP).

6. The polycarbonate composition of claim 1, wherein the composition comprises less than 1000 ppm of a bromine and/or chlorine containing compound.

7. The polycarbonate composition of claim 1, wherein the first polycarbonate component comprises a blend of two or more polycarbonate polymers.

8. The polycarbonate composition of claim 1, further comprising from greater than 0 to 5 weight percent of a fluorinated polyolefin anti-dripping agent.

29. An article of manufacture comprising the polycarbonate composition of claim 1.

2. The polycarbonate composition of claim Error! Reference source not found., wherein the flame retardant comprises bisphenol A diphenylphosphate.

3. The polycarbonate composition of claim Error! Reference source not found., wherein the impact modifier comprises a methyl methacrylate-butadiene-styrene (MBS) impact modifier.

9. A polycarbonate composition comprising:

a. from 20 to 80 weight percent of a first polycarbonate component;

b. from 10 to 25 weight percent of a polysiloxane-polycarbonate block copolymer comprising a polycarbonate block derived from Bisphenol-A and diorganopolysiloxane block of the general formula (I);

10. The polycarbonate composition of claim 9, further comprising from greater than 0 to 15 weight percent of a high heat polycarbonate component.

11. The polycarbonate composition of claim 10, wherein the high heat polycarbonate component comprises 2-phenyl-3,3-bis(4-hydroxyphenyl)phthalimidine (PPPBP).

12. The polycarbonate composition of claim 9, wherein the composition comprises less than 1000 ppm of a bromine and/or chlorine containing compound.

13. The polycarbonate composition of claim 9, wherein the first polycarbonate component comprises a blend of two or more polycarbonate polymers.

14. The polycarbonate composition of claim 9, further comprising from greater than 0 to 5 weight percent of a fluorinated polyolefin anti-dripping agent.

30. An article of manufacture comprising the polycarbonate composition of claim 9.

15. A method for the manufacture of a polycarbonate composition that exhibits a notched izod impact strength greater than 400 J/m as measured according to American Society for Testing and Materials (ASTM) D256 as measured on a bar having a thickness of 3.2 mm and wherein the composition exhibits a UL-94 flammability rating of V0 as measured on a flame bar having a thickness of 0.60 mm, wherein the method comprises combining

a. a first polycarbonate component, wherein the first polycarbonate component is combined in an amount of from about 20 to 80 weight percent of the composition;

b. a polysiloxane-polycarbonate block copolymer comprising a polycarbonate block derived from bisphenol A and a diorganopolysiloxane block of the general formula (I);

16. The method of claim 15, wherein the flame retardant comprises bisphenol A diphenylphosphate.

17. The method of claim 15, wherein the impact modifier comprises a methyl methacrylate-butadiene-styrene (MBS) impact modifier.

18. The method of claim 15, further comprising combining a high heat polycarbonate component into the composition.

19. The method of claim 18, wherein the high heat polycarbonate component comprises 2-phenyl-3,3-bis(4-hydroxyphenyl)phthalimidine (PPPBP).

20. The method of claim 15, wherein the composition comprises less than 1000 ppm of a bromine and/or chlorine containing compound.

21. The method of claim 15, wherein the first polycarbonate component comprises a blend of two or more polycarbonate polymers.

22. The method of claim 15, wherein the anti-dripping agent comprises a fluorinated polyolefin anti-dripping agent.

23. A method for the manufacture of a polycarbonate composition that exhibits a notched izod impact strength greater than 400 J/m as measured according to American Society for Testing and Materials (ASTM) D256 as measured on a bar having a thickness of 3.2 mm and wherein the composition exhibits a UL-94 flammability rating of V0 as measured on a flame bar having a thickness of 0.60 mm, wherein the method comprises combining

a. a first polycarbonate component, wherein the first polycarbonate component is combined in an amount of from about 20 to 80 weight percent of the composition;

b. a polysiloxane-polycarbonate block copolymer comprising a polycarbonate block derived from bisphenol A and a diorganopolysiloxane block of the general formula (I);

24. The method of claim 23, further comprising combining a high heat polycarbonate component into the composition.

25. The method of claim 24, wherein the high heat polycarbonate component comprises 2-phenyl-3,3-bis(4-hydroxyphenyl)phthalimidine (PPPBP).

26. The method of claim 23, wherein the composition comprises less than 1000 ppm of a bromine and/or chlorine containing compound.

27. The method of claim 23, wherein the first polycarbonate component comprises a blend of two or more polycarbonate polymers.

28. The method of claim 23, wherein the anti-dripping agent comprises a fluorinated polyolefin anti-dripping agent.