Aromatic Polycarbonate Resin Composition, And Substrate For Optical Information-Recording Media, Transparent Optical Article, Lighting Appliance Cover And Transparent Member For Vehicles Comprising It

• US 20080029933A1
• Filed: 06/24/2005
• Published: 02/07/2008
• Est. Priority Date: 06/25/2004
• Status: Abandoned Application

• Current Assignee: Mitsubishi Engineering-Plastics Corporation (Mitsubishi Chemical Group Corp.)
• Original Assignee: Mitsubishi Engineering-Plastics Corporation (Mitsubishi Chemical Group Corp.)
• Inventors: Higashiizumi, Emi, Sasaki, Haruo, Nakano, Hiroshi
• Application Number:
  US11/630,568
• Publication Number:
  US 20080029933A1
• Time in Patent Office: Days
• US Class Current: 264/328.1
• CPC Class Codes: C08K 5/3435 Piperidines
• CPC Class Codes: C08K 5/34926 also containing heterocyclic groups other than triazine groups
• CPC Class Codes: C08L 69/00 Compositions of polycarbonates; Compositions of derivatives of polycarbonates
• CPC Class Codes: G11B 11/10586 characterised by the selection of the material
• CPC Class Codes: G11B 7/2534 polycarbonates [PC]

Abstract

Provided is an aromatic polycarbonate resin composition capable of solving the problem that products are charged in a process of producing the products, and the like. Employed is An aromatic polycarbonate resin composition comprising 100 parts by weight of a melting-process aromatic polycarbonate resin having a viscosity-average molecular weight of from 10,000 to 30,000, and from 0.00001 to 0.04 parts by weight of an amine compound, the amine compound having neither an aromatic ring nor an acid group in the molecule and having a molecular weight of from 100 to 5,000.

Claims

1. An aromatic polycarbonate resin composition comprising 100 parts by weight of a melting-process aromatic polycarbonate resin having a viscosity-average molecular weight of from 10,000 to 30,000, and from 0.00001 to 0.04 parts by weight of an amine compound, and the amine compound having an amine compound having neither an aromatic ring nor an acid group in the molecule and having a molecular weight of from 100 to 5,000.

2. The aromatic polycarbonate resin composition as claimed in claim 1, wherein the amine compound is a hindered amine compound.

3. The aromatic polycarbonate resin composition as claimed in claim 1, wherein the amine compound is a secondary or tertiary N-substituted amine compound.

4. The aromatic polycarbonate resin composition as claimed in claim 1, wherein the amine compound comprising a structure of >

NH or >

NR, and R represents an alkyl group having from 1 to 4 carbon atoms, or an alkenyl group having from 1 to 4 carbon atoms.

5. The aromatic polycarbonate resin composition as claimed in claim 1, wherein the amine compound comprises a piperidine structure in the molecule.

6. The aromatic polycarbonate resin composition as claimed in claim 1, wherein the amine compound comprises a 2,2,6,6-tetraalkylpiperidine structure in the molecule.

7. The aromatic polycarbonate resin composition as claimed in claim 1, wherein the amine compound is bis(2,2,6,6-tetramethyl-4-piperidyl) sebacate or a polycondensate of dibutylamine/1,3,5-triazine/N,N′

-bis(2,2,6,6)-tetramethyl-4-piperidyl-1,6-hexamethylenediamine and N-(2,2,6,6-tetramethyl-4-piperidyl)butylamine.

8. The aromatic polycarbonate resin composition as claimed in claim 1, wherein the amount of the amine compound is from 0.00001 parts by weight to less than 0.02 parts by weight relative to 100 parts by weight of the aromatic polycarbonate resin.

9. The aromatic polycarbonate resin composition as claimed in claim 1, which additionally comprises from 0.001 to 5 parts by weight of a UV absorbent and/or from 0.001 to 5 parts by weight of an antioxidant relative to 100 parts by weight of the aromatic polycarbonate resin, wherein the antioxidant is free from an amine compound having neither an aromatic ring nor an acid group in the molecule and having a molecular weight of from 100 to 5,000.

10. The aromatic polycarbonate resin composition as claimed in claim 9, wherein the UV absorbent is a benzotriazole compound.

11. The aromatic polycarbonate resin composition as claimed in claim 9, wherein the antioxidant is a phosphorus compound.

12. The aromatic polycarbonate resin composition as claimed in claim 9, wherein the amount of the amine compound is from 0.00001 parts by weight to less than 0.02 parts by weight relative to 100 parts by weight of the aromatic polycarbonate resin.

13. An article formed of an aromatic polycarbonate resin composition of claim 1.

14. The article as claimed in claim 13, which is produced by an injection-molding process.

15. A substrate for optical information-recording media, which is formed of an aromatic polycarbonate resin composition of claim 1.

16. The substrate for optical information-recording media as claimed in claim 15, wherein the aromatic polycarbonate resin comprises a viscosity-average molecular weight of from 10,000 to 25,000.

17. The substrate for optical information-recording media as claimed in claim 15, wherein the amine compound is a hindered amine compound.

18. The substrate for optical information-recording media as claimed in claim 15, wherein the amine compound is a secondary or tertiary N-substituted amine compound.

19. The substrate for optical information-recording media as claimed in claim 15, wherein the amine compound comprises a structure of >

NH or >

NR, and R represents an alkyl group having from 1 to 4 carbon atoms, or an alkenyl group having from 1 to 4 carbon atoms.

20. The substrate for optical information-recording media as claimed in claim 15, wherein the amine compound comprises a piperidine structure in the molecule.

21. The substrate for optical information-recording media as claimed in claim 15, wherein the amine compound comprises a 2,2,6,6-tetraalkylpiperidine structure in the molecule.

22. The substrate for optical information-recording media as claimed in claim 15, wherein the amine compound is bis(2,2,6,6-tetramethyl-4-piperidyl) sebacate or a polycondensate of dibutylamine/1,3,5-triazine/N,N′

-bis(2,2,6,6)-tetramethyl-4-piperidyl-1,6-hexamethylenediamine and N-(2,2,6,6-tetramethyl-4-piperidyl)butylamine.

23. The substrate for optical information-recording media as claimed in claim 15, wherein the amount of the amine compound is from 0.00001 parts by weight to less than 0.001 parts by weight relative to 100 parts by weight of the aromatic polycarbonate resin.

24. The substrate for optical information-recording media as claimed in claim 15, which is a substrate for rewritable or write-once optical information-recording media.

25. The substrate for optical information-recording media as claimed in claim 15, which is a substrate for color optical information-recording media.

26. A transparent optical article formed of an aromatic polycarbonate resin composition of claim 1.

27. The transparent optical article as claimed in claim 26, which is produced by an injection-molding process.

28. The transparent optical article as claimed in claim 26, which is at least partly subjected to hard coat treatment.

29. The transparent optical article as claimed in claim 26, which is an optical plastic lens.

30. The transparent optical article as claimed in claim 26, which is an optical pickup lens.

31. A lighting appliance cover formed of an aromatic polycarbonate resin composition of claim 1.

32. The lighting appliance cover as claimed in claim 31, which is produced by an injection-molding process.

33. The lighting appliance cover as claimed in claim 31, which is produced by a rotary-molding process.

34. The lighting appliance cover as claimed in claim 31, which is at least partly subjected to hard coat treatment.

35. A transparent member for vehicles, formed of an aromatic polycarbonate resin composition of claim 1.

36. The transparent member for vehicles as claimed in claim 35, which is produced by an injection-molding process.

37. A transparent member for vehicles, formed of the aromatic polycarbonate resin composition of claim 9.

38. The transparent member for vehicles as claimed in claim 37, which is produced by an injection-molding process.

39. The transparent member for vehicles as claimed in claim 35, which is a lighting tool for vehicles.

40. The transparent member for vehicles as claimed in claim 37, which is a lighting tool for vehicles.