# US 8,541,621 B2 · Polymerization initiator having aryl azide and surface modification method of cyclic olefin copolymer using the same

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- Number: US 8,541,621 B2
- Document ID: US8541621B2
- Status: Granted
- Kind: B2
- Application number: 12/556,546
- Filed: 2009-09-09
- Published: 2010-06-10
- Granted: 2013-09-24
- Earliest claimed: 2008-12-05
- Assignees: Electronics and Telecommunications Research Institute
- Applicants: Dong-Ho Shin; Insung S. Choi; Sung Min Kang; Seung Pyo Jeong; Jinkyu Kim; Bokyung Kong
- Inventors: Dong-Ho Shin; Insung S. Choi; Sung Min Kang; Seung Pyo Jeong; Jinkyu Kim; Bokyung Kong
- Web page: https://patentgrep.com/patent/US8541621B2

## CPC

- C08F 2/50: with sensitising agents
- C08F 220/10: Esters
- Y10T 428/31913: Monoolefin polymer
- C08F: MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

Provided is a method for modifying a surface of a cyclic olefin copolymer, comprising: coating a compound of the following Chemical Formula 1 on the surface of a cyclic olefin copolymer substrate, irradiating UV light on the cyclic olefin copolymer substrate, and polymerizing a monomer on the cyclic olefin where X is H or F, and n is an integer of 1 to 6.

## Claims

### Claim 1

A method for modifying a surface of a cyclic olefin copolymer, comprising:
coating a polymerization initiator represented by the following Chemical Formula 1 on the surface of the cyclic olefin copolymer;
irradiating UV light on the cyclic olefin copolymer; and
polymerizing a monomer on the cyclic olefin copolymer,
where X is H or F, and n is an integer of 1 to 6.

### Claim 2 (depends on 1)

The method of claim 1, further comprising:
treating the cyclic olefin copolymer with oxygen plasma before coating the polymerization initiator on the cyclic olefin copolymer.

### Claim 3 (depends on 2)

The method of claim 2, further comprising:
washing the cyclic olefin copolymer before the oxygen plasma treatment.

### Claim 4 (depends on 3)

The method of claim 3, wherein the cyclic olefin copolymer is washed by applying ultrasonic waves to the cyclic olefin copolymer.

### Claim 5 (depends on 1)

The method of claim 1, wherein the UV light is irradiated at a wavelength of about 200 nm to about 300 nm for about 5 to about 60 minutes.

### Claim 6 (depends on 1)

The method of claim 1, wherein the polymerization initiator is coated on the surface of the cyclic olefin copolymer by spin coating.

### Claim 7 (depends on 1)

The method of claim 1, wherein the polymerizing of the monomer comprises performing an atom transfer radical polymerization with respect to monomers of the polymer by adding a transition metal catalyst.

### Claim 8 (depends on 7)

The method of claim 7, wherein the transition metal catalyst is a copper complex compound, a palladium complex compound, a nickel complex compound, an iron complex compound, or a ruthenium complex compound.

### Claim 9 (depends on 7)

The method of claim 7, wherein the monomer is an acrylate monomer, a methacrylate monomer, or an acrylamide monomer.

### Claim 10 (depends on 9)

The method of claim 9, wherein the acrylate monomer is oligo(ethylene glycol) methacrylate or (3-(methacryloylamino)propyl)-dimethyl(3-sulfopropyl)ammonium hydroxide.