Thermoplastic resin composition and molded article thereof

Patent metadata

Field	Value
Publication number	US-11002883-B2
Application number	US-201615770401-A
Country	US
Kind code	B2
Filing date	Nov 2, 2016
Priority date	Nov 4, 2015
Publication date	May 11, 2021
Grant date	May 11, 2021

Abstract

The present invention provides a resin composition comprising a thermoplastic resin comprising a constituting unit (A) derived from a compound represented by the following general formula (1), wherein
the resin composition comprises an ultraviolet absorber in an amount of 2,000 ppm to 40,000 ppm:

First claim

The invention claimed is:

1. A resin composition comprising a thermoplastic resin comprising a constituting unit (A) derived from a compound represented by the following formula (1), wherein
the resin composition comprises a benzotriazole-based ultraviolet absorber in an amount of 10,000 ppm to 20,000 ppm,

wherein R 1 to R 4 is each independently selected from the group consisting of a hydrogen atom, an alkyl group containing 1 to 20 carbon atoms, an alkoxyl group containing 1 to 20 carbon atoms, a cycloalkyl group containing 5 to 20 carbon atoms, a cycloalkoxyl group containing 5 to 20 carbon atoms, an aryl group containing 6 to 20 carbon atoms, and an aryloxy group containing 6 to 20 carbon atoms;
X 1 and X 2 is each independently selected from the group consisting of an alkylene group containing 2 to 8 carbon atoms, a cycloalkylene group containing 5 to 12 carbon atoms, and an arylene group containing 6 to 20 carbon atoms; and
m 1 and m 2 each independently represents an integer of 1 to 5.

2. The resin composition according to claim 1 , wherein the thermoplastic resin further comprises at least one constituting unit selected from the group consisting of a constituting unit (B) derived from a compound represented by the following formula (2) and a constituting unit (C) derived from a compound represented by the following formula (3),

wherein Y 1 and Y 2 each independently represents an alkylene group containing 1 to 8 carbon atoms; and
n 1 and n 2 each independently represents an integer of 1 to 5, and

wherein R 6 and R 7 is each independently selected from the group consisting of a hydrogen atom, an alkyl group containing 1 to 20 carbon atoms, an alkoxyl group containing 1 to 20 carbon atoms, a cycloalkyl group containing 5 to 20 carbon atoms, a cycloalkoxyl group containing 5 to 20 carbon atoms, an aryl group containing 6 to 20 carbon atoms, an aryloxy group containing 6 to 20 carbon atoms, and a halogen atom;
Z 1 and Z 2 is each independently selected from the group consisting of an alkylene group containing 1 to 8 carbon atoms, a cycloalkylene group containing 6 to 10 carbon atoms, and an arylene group containing 6 to 10 carbon atoms;
l 1 and l 2 each independently represents an integer of 0 to 5;
Q represents a single bond or is selected from the group consisting of:

wherein R 8 , R 9 , and R 14 to R 17 is each independently selected from the group consisting of a hydrogen atom, an alkyl group containing 1 to 10 carbon atoms, and a phenyl group;
R 10 to R 13 each independently represents a hydrogen atom or an alkyl group containing 1 to 5 carbon atoms;
Z′ represents an integer of 3 to 11; and
R 6 and R 7 may be identical to or different from each other.

3. The resin composition according to claim 2 , wherein
the thermoplastic resin comprises the constituting unit (B), and
the molar ratio between the constituting unit (A) and the constituting unit (B) is the constituting unit (A):the constituting unit (B)=20:80 to 80:20.

4. The resin composition according to claim 1 , wherein, in the formula (1), both X 1 and X 2 represent ethylene.

5. The resin composition according to claim 1 , wherein, in the formula (1), both m 1 and m 2 represent 1.

6. The resin composition according to claim 1 , wherein the compound represented by the general formula (1) is selected from the group consisting of 9,9-bis(4-(2-hydroxyethoxy)phenyl)fluorene and 9,9-bis(4-(2-hydroxyethoxy)-3-phenylphenyl)fluorene.

7. The resin composition according to claim 2 , wherein, in the formula (2), both Y 1 and Y 2 represent ethylene.

8. The resin composition according to claim 2 , wherein, in the formula (2), both n 1 and n 2 represent 1.

9. The resin composition according to claim 7 , wherein the compound represented by the formula (2) is 2,2′-bis(2-hydroxyethoxy)-1,1′-binaphthalene.

10. The resin composition according to claim 2 , wherein, in the formula (3),
l 1 and l 2 represent 0, and
Q represents:

wherein R 8 and R 9 are as defined in the formula (3).

11. The resin composition according to claim 10 , wherein the compound represented by the formula (3) is bisphenol A.

12. The resin composition according to claim 1 , wherein the thermoplastic resin is selected from the group consisting of a polycarbonate resin, a polyester resin, and a polyester carbonate resin.

13. The resin composition according to claim 12 , wherein the thermoplastic resin is a polycarbonate resin.

14. The resin composition according to claim 1 , wherein the light transmittance at a wavelength of 410 nm is 50% or less.

15. The resin composition according to claim 1 , wherein the weight average molecular weight of the thermoplastic resin is 10,000 to 100,000.

16. The resin composition according to claim 1 , which further comprises an antioxidant and/or a release agent.

17. A molded body comprising the resin composition according to claim 1 .

18. The molded body according to claim 17 , which is an optical film.

19. The molded body according to claim 17 , which is an optical lens.

Assignees

• Mitsubishi Gas Chemical Co

Inventors

• Kato Noriyuki
• Kondo Mitsuteru
• SHIRATAKE Munenori
• Ishihara Kentaro
• Hirose Koji
• Ikeda Shinya

Classifications

• G02B5/223

  containing organic substances, e.g. dyes, inks or pigments · CPC title

• C08K5/005

  Stabilisers against oxidation, heat, light, ozone · CPC title

• C08G64/307 Primary

  and phenols · CPC title

• G02B1/041

  Lenses · CPC title

• G02B1/04 Primary

  made of organic materials, e.g. plastics (G02B1/08 takes precedence) · CPC title