IP Library Granted Patent US 11,525,037
Granted Patent B2
US 11,525,037 · App. 16/608,742 · Granted Dec 13, 2022

Tetracarboxylic dianhydride, polyimide precursor resin and solution thereof, and polyimide and solution thereof

Inventors: Shinichi Komatsu (Tokyo, JP); Asako Kyobu (Tokyo, JP)
Assignee: ENEOS CORPORATION
C08G73/1078C07D493/10C08G73/1039C08L79/08
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 11,525,037
App. No.
16/608,742
Granted
Dec 13, 2022
Kind
B2
Abstract

A tetracarboxylic dianhydride represented by the following general formula (1): [in the formula (1), R 1 , R 2 , and R 3 each independently represent a hydrogen atom and the like, and n represents an integer of 0 to 12], wherein a ratio of a summed amount of a specific stereoisomer (A) and a specific stereoisomer (B) is 50% by mole or more relative to a total amount of stereoisomers based on three-dimensional configurations of two norbornane rings in the general formula (1), and a content ratio of the stereoisomer (A) is 30% by mole or more relative to the total amount of the stereoisomers.

Claims (30)

1. A tetracarboxylic dianhydride represented by the following general formula (1):

wherein in the formula (1), R 1 , R 2 , and R 3 each independently represent one selected from the group consisting of a hydrogen atom, alkyl groups having 1 to 10 carbon atoms, and a fluorine atom, and n represents an integer of 0 to 12,

wherein a summed amount of

a stereoisomer (A) represented by the following general formula (2):

wherein R 1 , R 2 , R 3 , and n in the formula (2) have the same definitions as those of R 1 , R 2 , R 3 , and n in the general formula (1), respectively and

a stereoisomer (B) represented by the following general formula (3):

wherein R 1 , R 2 , R 3 , and n in the formula (3) have the same definitions as those of R 1 , R 2 , R 3 , and n in the general formula (1), respectively,

is 80% by mole or more relative to a total amount of stereoisomers based on three-dimensional configurations of two norbornane rings in the general formula (1),

wherein a content of the stereoisomer (A) is 60% to 80% by mole relative to the total amount of the stereoisomers, and

wherein a content of the stereoisomer (B) is 10% to 40% by mole relative to the total amount of the stereoisomers.

2. A polyimide precursor resin, wherein

a summed amount of

a repeating unit (A′) represented by the following general formula (4):

wherein in the formula (4), R 1 , R 2 , and R 3 each independently represent one selected from the group consisting of a hydrogen atom, alkyl groups having 1 to 10 carbon atoms, and a fluorine atom, n represents an integer of 0 to 12, R 4 represents an arylene group having 6 to 50 carbon atoms, and X each independently represent one selected from the group consisting of a hydrogen atom, alkyl groups having 1 to 6 carbon atoms, and alkyl silyl groups having 3 to 9 carbon atoms and

a repeating unit (B′) represented by the following general formula (5):

wherein R 1 , R 2 , R 3 , R 4 , n, and X in the formula (5) have the same definitions as those of R 1 , R 2 , R 3 , R 4 , n, and X in the general formula (4), respectively,

is 80% by mole or more relative to a total amount of all repeating units,

a content of the repeating unit (A′) is 60% to 80% by mole relative to the total amount of all the repeating units, and

a content of the repeating unit (B′) is 10% to 40% by mole relative to the total amount of all the repeating units.

3. A polyimide, wherein

a summed amount of

a repeating unit (A) represented by the following general formula (6):

wherein in the formula (6), R 1 , R 2 , and R 3 each independently represent one selected from the group consisting of a hydrogen atom, alkyl groups having 1 to 10 carbon atoms, and a fluorine atom, n represents an integer of 0 to 12, and R 4 represents an arylene group having 6 to 50 carbon atoms and

a repeating unit (B) represented by the following general formula (7):

wherein R 1 , R 2 , R 3 , R 4 , and n in the formula (7) have the same definitions as those of R 1 , R 2 , R 3 , R 4 , and n in the general formula (6), respectively,

is 80% by mole or more relative to a total amount of all repeating units,

a content of the repeating unit (A) is 60% to 80% by mole relative to the total amount of all the repeating units, and

a content of the repeating unit (B) is 10% to 40% by mole relative to the total amount of all the repeating units.

4. A polyimide solution comprising the polyimide according to claim 3 and an organic solvent.

5. A polyimide precursor resin solution comprising the polyimide precursor resin according to claim 2 and an organic solvent.

Assignments (3)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 18, 2024
From: ENEOS CORPORATION
To: UBE CORPORATION
Reel/Frame 067151/0933 →
CHANGE OF NAME Recorded Oct 31, 2022
From: JXTG NIPPON OIL & ENERGY CORPORATION
To: ENEOS CORPORATION
Reel/Frame 061824/0561 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 23, 2019
From: KOMATSU, SHINICHI; KYOBU, ASAKO
To: JXTG NIPPON OIL & ENERGY CORPORATION
Reel/Frame 051355/0792 →
Priority Claims (1)
JP JP2017-089810 · Apr 28, 2017 · national
Continuity (1)
Related Publication 20200239636A1 · Jul 30, 2020