Fluoroelastomers for marking system components, including grafted fluorinated polymers

Patent metadata

Field	Value
Publication number	US-9187587-B2
Application number	US-201313931983-A
Country	US
Kind code	B2
Filing date	Jun 30, 2013
Priority date	Jun 30, 2013
Publication date	Nov 17, 2015
Grant date	Nov 17, 2015

Abstract

A marking system surface material includes a fluoroelastomer including grafted fluorinated polymers. The fluoroelastomer is a perfluoropolyether-grafted fluoroelastomer formed using an alkoxy-terminated fluorosilicone component, and exhibiting high contact angle and low sliding angle.

First claim

What is claimed is:

1. A fluoropolymer composition, comprising:
a fluoroelastomer component; and
a perfluoropolyether component, the fluoroelastomer component being grafted to the perfluoropolyether component with an amino-functionalized alkoxy-terminated fluorosilicone component.

2. The composition of claim 1 , wherein in the fluoroelastomer is a terpolymer, the terpolymer being a peroxide curable terpolymer.

3. A method of forming a fluoroelastomer comprising grafted fluorinated polymers, the method comprising:
combining a first solution comprising a fluoroelastomer component and a second solution comprising an amino-functionalized fluorosilicone crosslinker component including a perfluoropolyether component, the fluoroelastomer component being grafted to the perfluoropolyether component with an amino-functionalized alkoxy-terminated fluorosilicone component.

4. The method of claim 3 , the first solution being formed by preparing a surfactant mixture of fluorosurfactants and combining the mixture with the fluoroelastomer component.

5. The method of claim 4 , the first solution being a 17.5% solution of fluoroelastomer in MIBK.

6. The method of claim 3 , the second solution being formed by mixing the crosslinker and the perfluoropolyether component in a 1.5 to 1 mol ratio, respectively.

7. The method of claim 3 , the combining further comprising adding the second solution to the first solution dropwise.

8. The method of claim 3 , comprising:
combining the mixture of the first solution and the second solution with MgO, CaO, or a mixture thereof.

9. The method of claim 8 , comprising mixing the combined first and second solution and MgO, CaO, or mixture thereof.

10. The method of claim 9 , the mixing being performed over 5 minutes at 23 degrees Celsius to form a mixed solution.

11. The method of claim 10 , comprising:
pouring the solution.

12. The method of claim 11 , wherein the solution is poured onto a marking system surface.

13. The method of claim 10 , comprising:
outgassing the mixed solution at 23 degrees Celsius overnight; and curing the mixed solution at 218 degrees Celsius thereafter.

14. An ink-based digital printing system, comprising:
an imaging member having a reimageable surface layer, the surface layer comprising a fluoroelastomer component and a perfluoropolyether component, the fluoroelastomer component being grafted to the perfluoropolyether component with an amino-funetionalized alkoxy-terminated fluorosilicone component;
a dampening fluid metering system, the dampening fluid metering system being configured to apply dampening fluid onto the reimageable surface;
a dampening fluid patterning system, the dampening fluid patterning system being configured to form a pattern in the applied dampening fluid; and
an inking system, the inking system being configured to apply ink to the imaging member surface, the surface having the patterned dampening fluid disposed thereon.

Assignees

• Xerox Corp

Inventors

• Kanungo Mandakini
• Chidambareswarapattar Chakkaravarthy
• Gervasi David J
• Badesha Santokh S
• Kelly Matthew M
• Sharma Akshat

Classifications

• C08L27/12 Primary

  containing fluorine atoms · CPC title

• C09D187/005

  Block or graft polymers not provided for in groups C09D101/00 - C09D185/04 · CPC title

• C08F14/18 Primary

  Monomers containing fluorine · CPC title

• C08G81/021

  Block or graft polymers containing only sequences of polymers of C08C or C08F · CPC title

• C08L2205/03

  containing three or more polymers in a blend · CPC title