Search

CN-122003453-A - Polycarbonate resin composition, molded body, projection body for XR, and film for XR

CN122003453ACN 122003453 ACN122003453 ACN 122003453ACN-122003453-A

Abstract

A polycarbonate resin composition comprising 16 to 63 mass% of a repeating unit (a) represented by the following formula (1), and 37 to 84 mass% of a repeating unit (d) represented by the following formula (6), wherein the polycarbonate resin composition has a viscosity average molecular weight of 15000 or more, (in the formula (1), R 1 and R 2 each independently represent a hydrogen atom or a methyl group) (in the formula (6), R 15 ～R 18 each independently represents a hydrogen atom, an alkyl group having 1 to 10 carbon atoms, or a group having 6 to 12 carbon atoms including an aryl group W represents at least one member selected from the group consisting of a single bond, an oxygen atom, a sulfur atom, a sulfinyl group, a sulfonyl group, and a divalent organic group.)

Inventors

  • Fuda Shohei
  • Ju Di Daye
  • IRIE YASUYUKI
  • Koshi Yukinori
  • ITO WAKANA

Assignees

  • 三菱化学株式会社

Dates

Publication Date
20260508
Application Date
20241011
Priority Date
20231013

Claims (19)

  1. 1. A polycarbonate resin composition comprising 16 to 63 mass% of a repeating unit (a) represented by the following formula (1) and 37 to 84 mass% of a repeating unit (d) represented by the following formula (6), wherein the polycarbonate resin composition has a viscosity average molecular weight of 15000 or more, [ Chemical formula 1] In the formula (1), R 1 and R 2 each independently represent a hydrogen atom or a methyl group, [ Chemical formula 2] In the formula (6), R 15 ～R 18 is independently a hydrogen atom, an alkyl group having 1 to 10 carbon atoms, or a group having 6 to 12 carbon atoms including an aryl group, and W represents at least one selected from a single bond, an oxygen atom, a sulfur atom, a sulfinyl group, a sulfonyl group, and a divalent organic group.
  2. 2. A polycarbonate resin composition comprising 30 to 70 mass% of a polycarbonate copolymer (A) and 70 to 30 mass% of a polycarbonate resin (B), wherein, The polycarbonate copolymer (A) comprises a repeating unit (a) represented by the following formula (1) and a repeating unit (b) represented by the following formula (2) in a proportion of repeating unit (a) =50 to 85 mass% to 50 to 15 mass%, The polycarbonate resin (B) contains 95 mass% or more of a repeating unit (c) represented by the following formula (3), The content of the repeating unit (a) represented by the following formula (1) is 16 to 63 mass%, the viscosity average molecular weight of the polycarbonate resin composition is 15000 or more, [ Chemical formula 3] In the formula (1), R 1 and R 2 each independently represent a hydrogen atom or a methyl group, [ Chemical formula 4] In the formula (2), R 3 and R 4 each independently represent a hydrogen atom or a methyl group, [ Chemical formula 5] In formula (3), R 5 and R 6 each independently represent a hydrogen atom or a methyl group.
  3. 3. The polycarbonate resin composition according to claim 1 or 2, wherein, The polycarbonate resin composition was evaluated for the unnotched Charpy impact strength according to ISO179 as NB, i.e., unbroken.
  4. 4. The polycarbonate resin composition according to claim 1 or 2, wherein, The refractive index nD of the polycarbonate resin composition is more than 1.595.
  5. 5. The polycarbonate resin composition according to claim 1, which comprises two or more polycarbonate resins having different proportions of the repeating unit (a) represented by the formula (1), In the film transparency test described below, characters can be read from above through the film, < Film transparency test > About 4g of a resin sample dried under vacuum at 100℃for 2 hours was preheated by a hot press at a hot pressing temperature of 230℃for 2 minutes using a spacer having a width of 8cm, a length of 8cm and a thickness of 1.0mm, pressurized under a pressure of 20MPa for 1 minute, taken out together with the spacer and cooled at room temperature to prepare a film having a thickness of 900. Mu.m, The film produced by the method was laid on a sheet of paper printed with characters, and it was confirmed whether or not the characters printed on the sheet could be read from above through the film.
  6. 6. The polycarbonate resin composition according to claim 2, wherein in the following film transparency test, letters can be read from above through the film, < Film transparency test > About 4g of a resin sample dried under vacuum at 100℃for 2 hours was preheated by a hot press at a hot pressing temperature of 230℃for 2 minutes using a spacer having a width of 8cm, a length of 8cm and a thickness of 1.0mm, pressurized under a pressure of 20MPa for 1 minute, taken out together with the spacer and cooled at room temperature to prepare a film having a thickness of 900. Mu.m, The film produced by the method was laid on a sheet of paper printed with characters, and it was confirmed whether or not the characters printed on the sheet could be read from above through the film.
  7. 7. The polycarbonate resin composition according to claim 1 or 2, wherein, In the formula (1), R 1 and R 2 are hydrogen atoms.
  8. 8. The polycarbonate resin composition according to claim 1, wherein, In the formula (6), W is-CR 19 R 20 -or C3-10 cycloalkylidene, and R 19 and R 20 in-CR 19 R 20 -are each independently a hydrogen atom, a C1-10 alkyl group or a C6-12 aryl group.
  9. 9. The polycarbonate resin composition according to claim 2, wherein, In the formula (2), R 3 and R 4 are hydrogen atoms.
  10. 10. The polycarbonate resin composition according to claim 2, wherein, In the formula (3), R 5 and R 6 are hydrogen atoms.
  11. 11. The polycarbonate resin composition according to claim 1 or 2, wherein, The viscosity average molecular weight is 26000 or less.
  12. 12. The polycarbonate resin composition according to claim 1 or 2, wherein, The polycarbonate resin composition comprises 16-53 mass% of the repeating unit (a) represented by the formula (1).
  13. 13. The polycarbonate resin composition according to claim 12, wherein, The polycarbonate resin composition comprises 18-47 mass% of the repeating unit (a) represented by the formula (1).
  14. 14. A molded article obtained by using the polycarbonate resin composition according to claim 1 or 2.
  15. 15. A projection body for XR, which is obtained by using a polycarbonate resin composition comprising a repeating unit (a) represented by the following formula (1) and having a viscosity average molecular weight of 15000 or more, [ Chemical formula 6] In formula (1), R 1 and R 2 each independently represent a hydrogen atom or a methyl group.
  16. 16. The XR projector according to claim 15 wherein, The polycarbonate resin composition according to claim 1 or 2.
  17. 17. An XR film comprising a polycarbonate resin composition having a viscosity average molecular weight of 15000 or more and containing a repeating unit (a) represented by the following formula (1), [ Chemical formula 7] In formula (1), R 1 and R 2 each independently represent a hydrogen atom or a methyl group.
  18. 18. The XR film of claim 17, wherein, The polycarbonate resin composition comprises 16-63 mass% of the repeating unit (a) represented by the formula (1).
  19. 19. The XR film of claim 17, wherein, The polycarbonate resin composition comprises more than 63 mass% and 100 mass% or less of the repeating unit (a) represented by the formula (1).

Description

Polycarbonate resin composition, molded body, projection body for XR, and film for XR Technical Field The present invention relates to a polycarbonate resin composition having a high refractive index and excellent transparency and strength, and a molded article using the same. The present invention also relates to an XR projector and an XR film which have high refractive indices and excellent transparency and strength. Background Polycarbonate resins are used as molding materials for optical applications because of their excellent transparency, dimensional stability, mechanical properties, and the like. Patent document 1 discloses a polycarbonate resin having a repeating unit of 9, 9-bis (4- (2-hydroxyethoxy) phenyl) fluorene (abbreviated as BPEF) as a high refractive index, low birefringent polycarbonate resin. In the examples of patent document 1, a polycarbonate resin containing only BPEF repeating units is specifically shown. Patent document 2 discloses, as an environmentally-resistant, low-birefringent polycarbonate resin composition, a polycarbonate resin composition comprising a polycarbonate resin (a) containing a repeating unit having 9, 9-bis (4- (2-hydroxyethoxy) phenyl) fluorene (abbreviated as BPEF) and a polycarbonate resin (B) containing a repeating unit having 2, 2-bis (4-hydroxyphenyl) propane (abbreviated as BPA). In the examples of patent document 2, specifically, a polycarbonate resin composition comprising a polycarbonate resin (a) containing only BPEF repeating units and a polycarbonate resin (B) containing only BPA repeating units is shown. Prior art literature Patent literature Patent document 1 Japanese patent laid-open No. 2007-57916 Patent document 2 International publication No. 2010/010703 Disclosure of Invention Problems to be solved by the invention The polycarbonate resin disclosed in patent document 1, which contains only BPEF repeating units, cannot have an increased viscosity average molecular weight and is insufficient in refractive index and strength. The polycarbonate resin (a) containing only BPEF repeating units and the polycarbonate resin (B) containing only BPA repeating units disclosed in patent document 2 are poor in compatibility, and the blend thereof is poor in transparency, flexural strength and impact resistance due to poor compatibility, as shown in comparative example 1 described later. The present invention provides a polycarbonate resin composition having a high refractive index and excellent transparency and strength, and a molded article using the polycarbonate resin composition. Another problem of the present invention is to provide an XR projector and an XR film having high refractive indices and excellent transparency and strength. Solution for solving the problem The present inventors have found that a polycarbonate resin composition having a specific number of specific repeating units and a viscosity average molecular weight of a specific value or more, particularly a polycarbonate resin composition each comprising a specific amount of a polycarbonate copolymer containing a specific repeating unit and a specific polycarbonate resin, and a molded article using the polycarbonate resin composition have a high refractive index and excellent transparency and strength, and have completed the present invention. The present inventors have also found that an XR projector and an XR film using a polycarbonate resin composition having a specific repeating unit and a viscosity average molecular weight of a specific value or more have a high refractive index and excellent transparency and strength, and completed the present invention. The gist of the present invention is the following [1] to [19]. [1] A polycarbonate resin composition comprising 16-63 mass% of a repeating unit (a) represented by the following formula (1) and 37-84 mass% of a repeating unit (d) represented by the following formula (6), wherein the polycarbonate resin composition has a viscosity average molecular weight of 15000 or more. [ Chemical formula 1] (In the formula (1), R 1 and R 2 each independently represent a hydrogen atom or a methyl group.) [ Chemical formula 2] ( In the formula (6), R 15～R18 is independently a hydrogen atom, an alkyl group having 1 to 10 carbon atoms, or a group having 6 to 12 carbon atoms including an aryl group. W represents at least one selected from the group consisting of a single bond, an oxygen atom, a sulfur atom, a sulfinyl group, a sulfonyl group, and a divalent organic group. ) [2] A polycarbonate resin composition comprising 30 to 70 mass% of a polycarbonate copolymer (A) and 70 to 30 mass% of a polycarbonate resin (B), wherein, The polycarbonate copolymer (A) comprises a repeating unit (a) represented by the following formula (1) and a repeating unit (b) represented by the following formula (2) in a proportion of repeating unit (a) = (50 to 85 mass%), The polycarbonate resin (B) contains 95 mass% or more of a repeating unit (c) represented by the follo