Polycarbonate resin

Patent metadata

Field	Value
Publication number	US-10155846-B2
Application number	US-201715626633-A
Country	US
Kind code	B2
Filing date	Jun 19, 2017
Priority date	Dec 19, 2014
Publication date	Dec 18, 2018
Grant date	Dec 18, 2018

Abstract

The present invention relates to a polycarbonate resin containing, in the molecule, a structure represented by the following formula (1):

wherein X has a structure represented by any one of the following formula (2) to (4):

wherein each of R 1 to R 4 independently represents a hydrogen atom or an organic group having a carbon number of 1 to 30; the organic group may have an arbitrary substituent, and any two or more members of R 1 to R 4 may combine with each other to form a ring, which is excellent in heat resistance, transparency, light resistance, weather resistance and mechanical strength.

First claim

The invention claimed is:

1. A polycarbonate resin comprising a structure represented by the following formula (1) in the molecule:

wherein X has a structure represented by any one of the following formulae (2) to (4); in the formula (2) to (4), each of R 1 to R 4 independently represents a hydrogen atom or an organic group having a carbon number of 1 to 30; the organic group may have an arbitrary substituent; and any two or more members of R 1 to R 4 may combine with each other to form a ring.

2. A polycarbonate resin comprising a structure represented by the following formula (1) in the molecule:

wherein X has a structure represented by any one of the following formulae (2) to (4); in the formula (2) to (4), each of R 1 to R 4 independently represents an organic group having a carbon number of 1 to 30; the organic group may have an arbitrary substituent; and any two or more members of R 1 to R 4 may combine with each other to form a ring.

3. The polycarbonate resin according to claim 1 , wherein X in the formula (1) is a structure represented by the formula (2).

4. The polycarbonate resin according to claim 1 , wherein each of R 1 and R 2 and R 3 and R 4 in the formula (2) to (4) mutually forms a ring via an acetal bond.

5. The polycarbonate resin according to claim 4 , wherein the cyclohexane ring in the formula (2) to (4) is an inositol residue derived from myo-inositol.

6. The polycarbonate resin according to claim 5 , wherein X in the formula (1) is a structure represented by the following formula (5):

7. The polycarbonate resin according to claim 6 , wherein in all myo-inositol derivative compounds obtained by hydrolyzing the polycarbonate resin, the ratio of a compound having a structure represented by the following formula (6) is 90 mol % or more and the ratio of a total of a compound represented by the following structural formula (7) and a compound represented by the following structural formula (8) is 5 mol % or less:

8. The polycarbonate resin according to claim 1 , wherein X in the formula (1) is a structure represented by the formula (4) and R 1 , R 3 and R 4 in the formula (4) form a ring.

9. The polycarbonate resin according to claim 8 , wherein the cyclohexane ring in the formula (4) is an inositol residue derived from myo-inositol.

10. The polycarbonate resin according to claim 1 , wherein the midpoint glass transition initiation temperature Tmg is 100° C. or more.

11. The polycarbonate resin according to claim 1 , wherein the reduced viscosity is from 0.20 to 1.50 dl/g.

12. The polycarbonate resin according to claim 1 , wherein when all carbonate repeating units are assumed to be 100, the polycarbonate resin contains 80 or less of a structure represented by the formula (1) as a repeating unit.

13. The polycarbonate resin according to claim 1 , wherein the polycarbonate resin has from 0.1 to 50 mass % of a structural unit derived from an aliphatic dihydroxy compound and/or an alicyclic dihydroxy compound.

14. The polycarbonate resin according to claim 1 , wherein the polycarbonate resin contains from 5 to 80 mass % of a structural unit derived from isosorbide.

15. The polycarbonate resin according to claim 1 , wherein the polycarbonate resin contains from 0.1 to 50 mass % of a structural unit derived from an aliphatic dihydroxy compound having a primary hydroxyl group.

16. The polycarbonate resin according to claim 1 , wherein the polycarbonate resin contains from 0.1 to 50 mass % of a structural unit derived from an alicyclic dihydroxy compound having a primary hydroxyl group.

17. The polycarbonate resin according to claim 1 , wherein the polycarbonate resin contains from 40 to 95 mass % of a structural unit derived from a compound represented by the following formula (9):

wherein each of R 11 to R 14 independently represents a hydrogen atom, a substituted or unsubstituted alkyl group having a carbon number of 1 to 20, a substituted or unsubstituted cycloalkyl group having a carbon number of 6 to 20, or a substituted or unsubstituted aryl group having a carbon number of 6 to 20, each of Y 1 and Y 2 independently represents a substituted or unsubstituted alkylene group having a carbon number of 2 to 10, a substituted or unsubstituted cycloalkylene group having a carbon number of 6 to 20, or a substituted or unsubstituted arylene group having a carbon number of 6 to 20, and each of m and n is independently an integer of 0 to 5.

18. The polycarbonate resin according to claim 1 , wherein the polycarbonate resin contains from 50 to 80 mol % of a structural unit derived from a compound represented by the following formula (10), relative to structural units derived from all dihydroxy compounds in the polycarbonate resin:

wherein each of R 21 to R 24 independently represents a hydrogen atom, a substituted or unsubstituted alkyl group having a carbon number of 1 to 20, a substituted or unsubstituted cycloalkyl group having a carbon number of 5 to 20, or a substituted or unsubstituted aryl group having a carbon number of 6 to 20.

19. The polycarbonate resin according to claim 1 , wherein the polycarbonate resin contains from 1 to 40 mass % of a structure represented by the following formula (11) and/or a structure represented by the following formula (12):

wherein each of R 31 to R 33 independently represents a direct bond, an alkylene group having a carbon number of 1 to 4, which may have a substituent, and each of R 34 to R 39 independently represents a hydrogen atom, an alkyl group having a carbon number of 1 to 10, which may have a substituent, an aryl group having a carbon number of 4 to 10, which may have a substituent, an acyl group having a carbon number of 1 to 10, which may have a substituent, an alkoxy group having a carbon number of 1 to 10, which may have a substituent, an aryloxy group having a carbon number of 4 to 10, which may have a substituent, an amino group which may have a substituent, an alkenyl group having a carbon number of 2 to 10, which may have a substituent, an alkynyl group having a carbon number of 2 to 10, which may have a substituent, a sulfur atom having a substituent, a silicon atom having a substituent, a halogen atom, a nitro group, or a cyano group, provided that R 34 to R 39 may be the same as or different from each other and at least two adjacent groups out of R 34 to R 39 may combine with each other to form a ring.

Assignees

• Mitsubishi Chem Corp

Inventors

• Fuji Michiaki
• Kawakami Kiminori
• FUKUMOTO Kazuki
• Uehara Hisatoshi
• Satake Kenichi
• Maeda Tomoko

Classifications

• D01F6/70

  from polyurethanes · CPC title

• C09J175/06

  from polyesters · CPC title

• C09D175/06

  from polyesters · CPC title

• C08G2310/00

  Agricultural use or equipment · CPC title

• C08G2190/00

  Compositions for sealing or packing joints · CPC title