Polycarbonate resin, molded article, optical member, and lens

Patent metadata

Field	Value
Publication number	US-10597489-B2
Application number	US-201816103457-A
Country	US
Kind code	B2
Filing date	Aug 14, 2018
Priority date	Feb 23, 2016
Publication date	Mar 24, 2020
Grant date	Mar 24, 2020

Abstract

Disclosed is a polycarbonate resin having a constitutional unit represented by Formula (1). The resin provides a molded article having a sufficiently low Abbe number and having high abnormal dispersibility may be molded. Y 1 and Y 2 are an oxygen, sulfur, nitrogen or carbon atom; Z is an atomic group for forming a 5- to 7-membered ring; R 5 to R 8 represent a substituent; and Ar 11 and Ar 12 represent an aryl or heteroaryl group.

First claim

What is claimed is:

1. A polycarbonate resin having a constitutional unit represented by Formula (1);

in Formula (1), Y 1 and Y 2 are each independently an oxygen atom, a sulfur atom, a nitrogen atom, or a carbon atom, and at least one of Y 1 or Y 2 is an oxygen atom, a sulfur atom, or a nitrogen atom; Z is an atomic group for forming a 5- to 7-membered ring together with Y 1 —C═C—Y 2 and represents an atomic group including at least one selected from a carbon atom and a heteroatom;
R 5 to R 8 each independently represent a substituent;
a to d are each independently 0 or more and represent an integer of the maximum number or less by which each ring is substitutable;
Ar 11 and Ar 12 each independently represent an aryl group including a benzene ring surrounded by a broken line or a heteroaryl group including a benzene ring surrounded by a broken line as one of fused rings;
L 1 and L 2 each independently represent an alkylene group having 2 to 8 carbon atoms, a cycloalkylene group having 5 to 12 carbon atoms, an arylene group having 6 to 20 carbon atoms, or a heteroarylene group having 6 to 20 carbon atoms;
X 1 and X 2 each independently represent an oxygen atom or a sulfur atom;
n1 and n2 each independently represent an integer of 0 to 10; and
in a case where Ar 11 and Ar 12 are each independently an aromatic fused ring group including a benzene ring surrounded by a broken line as one of fused rings, R 5 , R 6 , —X 1 -[L 1 -O] n1 —, and —X 2 -[L 2 -O] n2 — may be each independently substituted at a benzene ring surrounded by a broken line or substituted at a fused ring other than the benzene ring surrounded by a broken line.

2. The polycarbonate resin according to claim 1 , wherein in Formula (1), at least one selected from Y 1 and Y 2 is a nitrogen atom.

3. The polycarbonate resin according to claim 1 , wherein the constitutional unit is a constitutional unit represented by Formula (2);

in Formula (2), R 5 to R 8 each independently represent a substituent; a to d are each independently 0 or more and represent an integer of the maximum number or less by which each ring is substitutable;
Ar 11 and Ar 12 each independently represent an aryl group including a benzene ring surrounded by a broken line or a heteroaryl group including a benzene ring surrounded by a broken line as one of fused rings;
L 1 and L 2 each independently represent an alkylene group having 2 to 8 carbon atoms, a cycloalkylene group having 5 to 12 carbon atoms, an arylene group having 6 to 20 carbon atoms, or a heteroarylene group having 6 to 20 carbon atoms;
X 1 and X 2 each independently represent an oxygen atom or a sulfur atom;
n1 and n2 each independently represent an integer of 0 to 10; and
in a case where Ar 11 and Ar 12 are each independently an aromatic fused ring group including a benzene ring surrounded by a broken line, R 5 , R 6 , —X 1 -[L 1 -O] n1 —, and —X 2 -[L 2 -O] n2 — may be each independently substituted at a benzene ring surrounded by a broken line or substituted at a fused ring other than the benzene ring surrounded by a broken line.

4. The polycarbonate resin according to claim 1 , further having a constitutional unit represented by Formula (11),

in Formula (11), R 11 is a group including at least one selected from an alkylene group having 2 to 8 carbon atoms, a cycloalkylene group having 5 to 12 carbon atoms, an arylene group having 6 to 40 carbon atoms, and a heteroarylene group having 6 to 40 carbon atoms.

5. The polycarbonate resin according to claim 4 , wherein R 11 in the constitutional unit represented by Formula (11) includes a group represented by Structure (12) or (13);

in Structures (12) and (13), * represents a linking site in a main chain of the constitutional unit represented by Formula (11).

6. The polycarbonate resin according to claim 4 ,
wherein a total amount of the constitutional unit represented by Formula (1) and the constitutional unit represented by Formula (11) is 90 mol % or more with respect to the entire constitutional unit of the polycarbonate resin, and
wherein a molar ratio of the constitutional unit represented by Formula (1) and the constitutional unit represented by Formula (11) is 40:60 to 90:10.

7. A molded article of the polycarbonate resin according to claim 1 .

8. An optical member comprising the molded article according to claim 7 .

9. A lens comprising the molded article according to claim 7 .

Assignees

• Fujifilm Corp

Inventors

• Uehira Shigeki
• Morooka Naoyuki
• Nakayama Takafumi

Classifications

• C08G64/12

  containing nitrogen · CPC title

• C08G64/165 Primary

  containing sulfur · CPC title

• C08G64/1641

  containing nitrogen · CPC title

• G02B1/041

  Lenses · CPC title

• C08G64/24

  and phenols · CPC title