IP Library › Granted Patent US 12,624,190
Granted Patent B2
US 12,624,190 · App. 17/760,528 · Granted May 12, 2026

Antibacterial antistatic composition and volatile corrosion inhibitor film including the same

Inventors: Gi Moon Yoo (Gyeonggi-do, KR); Gwan Yeong Kim (Gyeonggi-do, KR)
Assignee: DAEJIN ADVANCED MATERIALS INC.
C08K3/04C08G61/12C08K3/08C08K9/06
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Quick Facts
Patent No.
US 12,624,190
App. No.
17/760,528
Granted
May 12, 2026
Kind
B2
Abstract

The present application relates to an antistatic composition, which includes a conductive structure formed by connecting a modified graphene oxide or a modified carbon nanotube with a conductive polymer; silver nanoparticles; and a solvent, and a corrosion inhibition film including the same. The corrosion inhibition film of the present application has excellent antibacterial activity and excellent corrosion inhibiting ability.

Claims (47)

1 . An antibacterial antistatic composition, comprising:

a conductive structure which comprises a carbon nanotube or graphene oxide in which one or more oligomers selected from an acrylic oligomer and a urethane oligomer bind to its surface through a branch linkage, and a conductive polymer connected to the oligomer;

silver nanoparticles; and

a solvent,

wherein the oligomer comprises one or more of n number of first units with an acrylic group and m number of second units with a urethane group,

wherein the first unit is represented by Formula 4, and the second unit is represented by Formula 5,

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,

m is an integer of 0 to 1000,

n is an integer of 0 to 1000, and

n+m is an integer of 1 to 1000.

2 . The antibacterial antistatic composition of claim 1 , comprising, based on the total weight of the composition,

1 to 49 wt % of the conductive structure;

0.1 to 1 wt % of the silver nanoparticles; and

50 to 98 wt % of the solvent.

3 . The antibacterial antistatic composition of claim 1 , wherein the silver nanoparticle has a diameter of 0.1 nm to 100 nm.

4 . The antibacterial antistatic composition of claim 1 , wherein the silver nanoparticle is coated with a silicone-based compound.

5 . The antibacterial antistatic composition of claim 1 , wherein the composition has a bacteria inhibition rate of 90% or more in an antibacterial test of measuring a bacteria reduction rate after the contact of a sample surface with a bacterial culture for 24 hours in accordance with KSM ISO 22196.

6 . The antibacterial antistatic composition of claim 1 , wherein the conductive polymer is one or more of poly(3,4-ethylenedioxythiopene) (PEDOT) and polystyrene sulfonic acid (PSS), and

wherein the PEDOT is represented by Formula 1, 2, or 3 below,

wherein A is

or —NH.

7 . The antibacterial antistatic composition of claim 1 , wherein the carbon nanotube or graphene oxide:the oligomer:the conductive polymer are connected in a weight ratio of 2:1:8 to 1:0.2:100.

8 . The antibacterial antistatic composition of claim 1 , wherein the conductive structure is represented by Formulas 8 to 11 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,

wherein, in Formula 9,

R is

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

each of k and i is independently an integer of 1 to 10,000,000,

wherein, in Formula 10,

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,

wherein, in Formula 11,

R is

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

each of k and i is independently an integer of 1 to 10,000,000.

9 . A corrosion inhibition film, comprising:

a corrosion inhibiting resin layer; and

an antistatic coating layer formed of the antistatic composition of claim 1 at least one surface of the corrosion inhibiting resin layer.

10 . The corrosion inhibition film of claim 9 , wherein the corrosion inhibiting resin layer is formed of a composition comprising 70 to 90 wt % of a resin; 1 to 5 wt % of a nitrite; 1 to 5 wt % of a moisture absorbent, based on the total weight of the composition.

11 . The corrosion inhibition film of claim 10 , wherein the resin is at least one selected from the group consisting of a polyolefin, polystyrene, an acrylonitrile-butadiene-styrene copolymer, polyethylene terephthalate and a polyamide.

12 . The corrosion inhibition film of claim 11 , wherein the polyolefin is at least one selected from the group consisting of low-density polyethylene (LDPE), linear low-density polyethylene (LLDPE), metallocene polyethylene, high-density polyethylene (HDPE), polypropylene and ethylene vinyl acetate, and has a weight average molecular weight of 10,000 to 20,000 g/mol.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 15, 2022
From: YOO, GI MOON; KIM, GWAN YEONG
To: DAEJIN ADVANCED MATERIALS INC.
Reel/Frame 059267/0369 →
Priority Claims (1)
KR 10-2021-0153984 · Nov 10, 2021 · national
Continuity (1)
Related Publication 20240067794A1 · Feb 29, 2024
References Cited (6)
US 20070173564A1 · Sohn · 2007 [cited by examiner]
JP 2007182538A · 2007 [cited by applicant]
KR 102294709B1 · 2021 [cited by applicant]
Valles et al. Carbon 157 (2020) 750-760 (Year: 2020). [cited by examiner]
Cristina 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. 10-2021-0153984, dated Jan. 24, 2022. [cited by applicant]