UV-curable contact stabilization coating material for electrical contact surfaces

Patent metadata

Field	Value
Publication number	US-11831097-B2
Application number	US-201716313975-A
Country	US
Kind code	B2
Filing date	Jun 30, 2017
Priority date	Jun 30, 2016
Publication date	Nov 28, 2023
Grant date	Nov 28, 2023

Abstract

An electrical contact includes: a first contact surface; a second contact surface; and a coating dispersed on at least one of the first or second contact surfaces, where the coating includes the cured product of a telechelic polypropylene glycol-polyethylene glycol multi-block polymer.

First claim

What is claimed is:

1. An electrical contact comprising:
a first contact surface;
a second contact surface; and
a coating dispersed on at least one of the first or second contact surfaces, where the coating includes a cured product of a telechelic polypropylene glycol-polyethylene glycol multi-block “polymer,
where the telechelic polypropylene glycol-polyethylene glycol multi-block polymer is selected from the group consisting of diacrylate polypropylene glycol-block-polyethylene glycols, dimethacrylate polypropylene glycol-block-polyethylene glycols, diacrylate polypropylene glycol-block-polyethylene glycol-block-polypropylene glycols, dimethacrylate polypropylene glycol-block-polyethylene glycol-block-polypropylene glycols, diacrylate polyethylene glycol-block-polypropylene glycol-block-polyethylene glycols, dimethacrylate polyethylene glycol-block-polypropylene glycol-block-polyethylene glycols, diacrylate polypropylene glycol-block-polyethylene glycol-block-polypropylene glycol-block-polyethylene glycols, dimethacrylate polypropylene glycol-block-polyethylene glycol-block-polypropylene glycol-block-polyethylene glycols, diacrylate polyethylene glycol-block-polypropylene glycol-block-polyethylene glycol-block-polypropylene glycols, dimethacrylate polyethylene glycol-block-polypropylene glycol-block-polyethylene glycol-block-polypropylene glycols, and combinations thereof.

2. The electrical contact of claim 1 , where the telechelic polypropylene glycol-polyethylene glycol multi-block polymer is defined by the formula:

where each R 1 is a hydrogen or a methyl group, x is from about 5 to about 30 y is from about 5 to about 30, and z is from about 5 to about 30.

3. The electrical contact of claim 1 , where the telechelic polypropylene glycol-polyethylene glycol multi-block polymer is defined by the formula:

where each R 1 is a hydrogen or a methyl group, x is from about 5 to about 30 y is from about 5 to about 30, and z is from about 5 to about 30.

4. The electrical contact of claim 1 , where the coating further includes a cured product of a reactive diluent.

5. The electrical contact of claim 4 , where the reactive diluent is a telechelic polyethylene glycol oligomer or a mono-functional polyethylene glycol oligomer.

6. The electrical contact of claim 4 , where the reactive diluent is a poly(ethylene glycol) diacrylate or poly(ethylene glycol) dimethacrylate defined by the following formula

where each 10 is a hydrogen or a methyl group and n is from about 5 to about 9.

7. The electrical contact of claim 4 , where the reactive diluent is a poly(ethylene glycol) methyl ether acrylate or poly(ethylene glycol) methyl ether methacrylate defined by the following formula

where R 1 is a hydrogen or a methyl group and n is from about 5 to about 9.

8. The electrical contact of claim 1 , where the coating further includes a wetting agent.

9. The electrical contact of claim 1 , where the coating further includes a photoinitiator.

10. The electrical contact of claim 1 , where the coating is a gel.

11. The electrical contact of claim 1 , where the telechelic polypropylene glycol-block-polyethylene glycol-block-polypropylene glycol polymer has a number average molecular weight of about 2500 to about 3000 g/mol.

12. The electrical contact of claim 1 , where the coating has a thickness from about 1 nm to about 3000 nm.

13. The electrical contact of claim 1 , where the coating is self-healing.

14. The electrical contact of claim 1 , where the first contact surface and the second contact surface are each independently made from a metal selected from gold, silver, copper, and combinations thereof.

15. The electrical contact of claim 1 , where the electrical contact is selected from electrical connectors, relays, switches, potentiometers, and faders.

16. A method of stabilizing an electrical contact comprising:
providing an electrical contact that includes a first contact surface and second contact surface;
coating at least one of the first or second contact surfaces with a curable coating composition that includes a telechelic polypropylene glycol-polyethylene glycol multi-block polymer, where the telechelic polypropylene glycol-polyethylene glycol multi-block polymer is selected from the group consisting of diacrylate polypropylene glycol-block-polyethylene glycols, dimethacrylate polypropylene glycol-block-polyethylene glycols, diacrylate polypropylene glycol-block-polyethylene glycol-block-polypropylene glycols, dimethacrylate polypropylene glycol-block-polyethylene glycol-block-polypropylene glycols, diacrylate polyethylene glycol-block-polypropylene glycol-block-polyethylene glycols, dimethacrylate polyethylene glycol-block-polypropylene glycol-block-polyethylene glycols, diacrylate polypropylene glycol-block-polyethylene glycol-block-polypropylene glycol-block-polyethylene glycols, dimethacrylate polypropylene glycol-block-polyethylene glycol-block-polypropylene glycol-block-polyethylene glycols, diacrylate polyethylene glycol-block-polypropylene glycol-block-polyethylene glycol-block-polypropylene glycols, dimethacrylate polyethylene glycol-block-polypropylene glycol-block-polyethylene glycol-block-polypropylene glycols, and combinations thereof; and
curing the curable coating composition.

17. The method of claim 16 , where the curable coating composition includes a photoiniator, and the step of curing the curable coating composition is performed by irradiating the curable coating composition with UV light.

18. The method of claim 16 , where the curable coating composition further includes a reactive diluent.

Assignees

• Cakmak Mukerrem
• Soucek Mark D
• Univ Akron

Inventors

• Cakmak Mukerrem
• Soucek Mark D

Classifications

• H01R13/03 Primary

  characterised by the material, e.g. plating, or coating materials · CPC title

• B32B15/00

  Layered products comprising {a layer of} metal · CPC title

• C08F2/06

  Organic solvent · CPC title

• C09D4/06 Primary

  {Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond} in combination with a macromolecular compound other than an unsaturated polymer of groups C09D159/00 - C09D187/00 · CPC title

• C09D171/02

  Polyalkylene oxides · CPC title