IP Library › Granted Patent US 12,252,630
Granted Patent B2
US 12,252,630 · App. 17/761,267 · Granted Mar 18, 2025

Conductive structure and antistatic composition including the same

Inventors: Gwan Yeong Kim (Gyeonggi-do, KR); Gi Moon Yoo (Gyeonggi-do, KR)
Assignee: DAEJIN ADVANCED MATERIALS INC.
C09D5/24C01B32/174C01B32/194C01B32/198C08G83/001C08K9/04C09D7/20C09D7/62C09D187/005C01B2202/06C01B2202/22C01P2002/82C01P2002/85C08K2201/001C08K2201/011
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Quick Facts
Patent No.
US 12,252,630
App. No.
17/761,267
Granted
Mar 18, 2025
Kind
B2
Abstract

The present application relates to a conductive structure formed by connecting a modified graphene oxide or modified carbon nanotube with a conductive polymer, and an antistatic composition including the same. The antistatic composition of the present application has advantages of an excellent adhesive property, improved surface roughness, mechanical strength, and improved electrical properties.

Claims (27)

1. A conductive structure formed by connecting a modified carbon nanotube with a conductive polymer,

wherein the modified carbon nanotube has one or more oligomers selected from an acrylic oligomer and a urethane oligomer binding to the surface of the carbon nanotube through a branch linkage, and

the conductive polymer is connected to the oligomer,

wherein the conductive polymer is poly(3,4-ethylendioxythiopene) (PEDOT); or poly(3,4-ethylenedioxythiopene) (PEDOT) and polystyrene sulfonic acid (PSS); and

wherein the PEDOT has one or more functional groups comprising an NH group.

2. The conductive structure of claim 1 , wherein the PEDOT is represented by Formula 3 below,

wherein A is

or —NH.

3. The conductive structure of claim 1 , wherein the acrylic oligomer and the urethane oligomer comprise one or more of n number of first units with an acrylic group and m number of second units with a urethane group, wherein each of n and m is an integer of 0 to 1000, and n+m is an integer of 1 to 1000.

4. The conductive structure of claim 3 , wherein the first unit is represented by Formula 4, and the second unit is represented by Formula 5,

wherein n is an integer of 0 to 1000,

wherein X 1 is a direct linkage, or a urethane group or a C 1 -C 10 alkylene group,

X 2 is a C 1 -C 10 alkylene group,

X 3 is a direct linkage, O or S, and

m is an integer of 0 to 1000.

5. The conductive structure of claim 1 , wherein the modified carbon nanotube is represented by Formula 6 below,

wherein, in Formula 6,

R is

 and

each of n and m is independently an integer of 0 to 1000.

6. The conductive structure of claim 1 , wherein the modified carbon nanotube has one or more functional groups selected from a hydroxyl group (—OH), a formyl group (—CHO), a carbonyl group (—CO), an amine group (—NH 2 ) and a carboxyl group (—COOH) on its surface.

7. The conductive structure of claim 1 , wherein the carbon nanotube:the acrylic oligomer and the urethane oligomer:the conductive polymer are connected in a weight ratio of 2:1:8 to 1:0.2:100.

8. The conductive structure of claim 1 , wherein the conductive structure is represented by Formulas 8 below:

wherein, in Formula 8,

R is

each of n and m is independently an integer of 0 to 1000, and

k is an integer of 1 to 10,000,000.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 18, 2022
From: YOO, GI MOON; KIM, GWAN YEONG
To: DAEJIN ADVANCED MATERIALS INC.
Reel/Frame 059310/0732 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 17, 2022
From: KIM, GWAN YEONG; YOO, SUNG JOON
To: DAEJIN ADVANCED MATERIALS INC.
Reel/Frame 059292/0220 →
Priority Claims (2)
KR 10-2021-0066193 · May 24, 2021 · national
KR 10-2021-0150089 · Nov 3, 2021 · national
Continuity (1)
Related Publication 20240067836A1 · Feb 29, 2024
References Cited (6)
US 20100038597A1 · Reynolds · 2010 [cited by examiner]
US 20240067794A1 · Yoo · 2024 [cited by examiner]
KR 101469185B1 · 2014 [cited by applicant]
Chen, Junjie, and Jiecheng Han. “Effect of hydroxylated carbon nanotubes on the thermal and electrical properties of derived epoxy composite materials.” Results in Physics 18 (2020): 103246. (Year: 2020). [cited by examiner]
Christina Valles et al.; “PMMA-grafted graphene nanoplatelets to reinforce the mechanical and thermal properties of PMMA composites”, Carbon, 2019, pp. 1-36. [cited by applicant]
Office Action from corresponding Korean Patent Application No. 10-2021-0150089, dated Jan. 24, 2022. [cited by applicant]