# US 8,784,697 B2 · Conductive pastes

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- Number: US 8,784,697 B2
- Document ID: US8784697B2
- Status: Granted
- Kind: B2
- Application number: 13/560,273
- Filed: 2012-07-27
- Published: 2013-06-13
- Granted: 2014-07-22
- Earliest claimed: 2011-12-07
- Assignees: Industrial Technology Research Institute
- Applicants: Kuo-Chan Chiou; Jun-Rong Chen; Hsin-Mei Chen
- Inventors: Kuo-Chan Chiou; Jun-Rong Chen; Hsin-Mei Chen
- Web page: https://patentgrep.com/patent/US8784697B2

## CPC

- H01B 1/22: the conductive material comprising metals or alloys
- H01B: CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES (selection for magnetic properties H01F1/00; waveguides H01P {; printed circuits H05K})

## Abstract

A conductive paste is provided. The conductive paste includes a conductive powder and a resin composition. The resin composition includes a polyester acrylate oligomer, a hydroxyalkyl acrylate (HAA) and a polyvinylpyrrolidone (PVP) derivative. The conductive powder and the resin composition have a weight ratio of 40-85:15-60. The polyester acrylate oligomer, the hydroxyalkyl acrylate (HAA) and the polyvinylpyrrolidone (PVP) derivative have a weight ratio of 15-70:10-60:3-40.

## Claims

### Claim 1

A conductive paste, comprising:
a conductive powder; and
a resin composition comprising a polyester acrylate oligomer, a hydroxyalkyl acrylate (HAA) and a polyvinylpyrrolidone (PVP) derivative.

### Claim 2 (depends on 1)

The conductive paste as claimed in claim 1, wherein the conductive powder comprises gold, silver, aluminum, copper, nickel, platinum, carbon black or a combination thereof.

### Claim 3 (depends on 1)

The conductive paste as claimed in claim 1, wherein the conductive powder is in a shape of a sheet, grain or a combination thereof.

### Claim 4 (depends on 1)

The conductive paste as claimed in claim 1, wherein the conductive powder and the resin composition have a weight ratio of 40-85:15-60.

### Claim 5 (depends on 1)

The conductive paste as claimed in claim 1, wherein the polyester acrylate oligomer has the following formula:
(m=1-5) or
(R1—R6, independently, are —CH═CH2 or —CH2CH2N((CH2)nOH)2 (n=1-15), wherein at least one of R1—R6 is —CH2CH2N((CH2)nOH)2).

### Claim 6 (depends on 1)

The conductive paste as claimed in claim 1, wherein the hydroxyalkyl acrylate (HAA) has the following formula:
(x=1-4).

### Claim 7 (depends on 1)

The conductive paste as claimed in claim 1, wherein the polyvinylpyrrolidone (PVP) derivative has the following formula:
(R1, R2 and R3 are —H, —OH or —COOH, and y is 50-5,000).

### Claim 8 (depends on 1)

The conductive paste as claimed in claim 1, wherein the polyvinylpyrrolidone (PVP) derivative has a molecular weight of 55,000-1,500,000.

### Claim 9 (depends on 1)

The conductive paste as claimed in claim 1, wherein the polyester acrylate oligomer, the hydroxyalkyl acrylate (HAA) and the polyvinylpyrrolidone (PVP) derivative have a weight ratio of 15-70:10-60:3-40.

### Claim 10 (depends on 1)

The conductive paste as claimed in claim 1, further comprising a photoinitiator, a photosensitizer, a reactive diluent or a combination thereof.