Nonaqueous sol-gel for adhesion enhancement of water-sensitive materials

Patent metadata

Field	Value
Publication number	US-11987725-B2
Application number	US-201715838614-A
Country	US
Kind code	B2
Filing date	Dec 12, 2017
Priority date	Jun 30, 2017
Publication date	May 21, 2024
Grant date	May 21, 2024

Abstract

The present disclosure provides sol-gels, sol-gel films and substrates, such as vehicle components, having a sol-gel film disposed thereon. At least one sol-gel is the reaction product of an organosilane, a metal alkoxide, an acid stabilizer, and an organic solvent, the sol-gel having about 10 wt % or less water content based on the total weight of the sol-gel. At least one vehicle component comprises a sol-gel coating system, comprising a metal substrate and a sol-gel disposed on the metal substrate, and the sol-gel is the reaction product of an organosilane, a metal alkoxide, an acid stabilizer, and an organic solvent, the sol-gel having about 10 wt % or less water content based on the total weight of the sol-gel.

First claim

What is claimed is:

1. A sol-gel for providing an adhesion coating, the sol-gel comprising a reaction product of:
an organosilane;
a metal alkoxide comprising a zirconium alkoxide; and
an acid stabilizer;
the sol-gel comprising a corrosion inhibitor having one or more thiol moieties; and
an organic solvent selected from the group consisting of 1-pentanol, 2-pentanol, 3-pentanol, 1-hexanol, 2-hexanol, 3-hexanol, and combinations thereof, wherein:
the sol-gel has a water content of 0 wt % based on a total weight of the sol-gel,
the organosilane consists of a hydroxy organosilane represented by Formula (II):

wherein R is selected from the group consisting of

2. The sol-gel of claim 1 , wherein the organic solvent is anhydrous.

3. The sol-gel of claim 1 , wherein the zirconium alkoxide is one or more of zirconium (IV) tetramethoxide, zirconium (IV) tetraethoxide, zirconium (IV) tetra-n-propoxide, zirconium (IV) tetra-isopropoxide, zirconium (IV) tetra-n-butoxide, zirconium (IV) tetra-isobutoxide, zirconium (IV) tetra-n-pentoxide, zirconium (IV) tetra-isopentoxide, zirconium (IV) tetra-n-hexoxide, zirconium (IV) tetra-isohexoxide, zirconium (IV) tetra-n-heptoxide, zirconium (IV) tetra-isoheptoxide, zirconium (IV) tetra-n-octoxide, zirconium (IV) tetra-n-isooctoxide, zirconium (IV) tetra-n-nonoxide, zirconium (IV) tetra-n-isononoxide, zirconium (IV) tetra-n-decyloxide, and zirconium (IV) tetra-n-isodecyloxide.

4. The sol-gel of claim 1 , wherein the acid stabilizer is acetic acid.

5. The sol-gel of claim 1 , wherein the pH of the sol-gel is about 2 to about 5.

6. The sol-gel of claim 1 , wherein a weight fraction of acid stabilizer in the sol-gel is about 0.1 wt % to about 10 wt %.

7. The sol-gel of claim 1 , wherein R is

8. The sol-gel of claim 7 , wherein R is

9. The sol-gel of claim 7 , wherein R is

10. The sol-gel of claim 1 , wherein R is

11. The sol-gel of claim 10 , wherein R is

12. The sol-gel of claim 10 , wherein R is

13. A sol-gel for providing an adhesive coating, the sol-gel comprising a reaction product of:
an organosilane;
a metal alkoxide; and
an acid stabilizer;
the sol-gel comprising an organic solvent selected from the group consisting of 1-pentanol, 2-pentanol, 3-pentanol, 1-hexanol, 2-hexanol, 3-hexanol, and combinations thereof, the sol-gel having a water content of 0 wt % based on a total weight of the sol-gel, wherein:
the metal alkoxide is one or more of zirconium (IV) tetramethoxide, zirconium (IV) tetraethoxide, zirconium (IV) tetra-n-propoxide, zirconium (IV) tetraisopropoxide, zirconium (IV) tetra-n-butoxide, zirconium (IV) tetra-isobutoxide, zirconium (IV) tetra-n-pentoxide, zirconium (IV) tetra-isopentoxide, zirconium (IV) tetra-n-hexoxide, zirconium (IV) tetra-isohexoxide, zirconium (IV) tetra-n-heptoxide, zirconium (IV) tetra-isoheptoxide, zirconium (IV) tetra-n-octoxide, zirconium (IV) tetra-n-isooctoxide, zirconium (IV) tetra-n-nonoxide, zirconium (IV) tetra-n-isononoxide, zirconium (IV) tetra-n-decyloxide, or zirconium (IV) tetra-n-isodecyloxide,
the organosilane consists of a hydroxy organosilane represented by Formula (II):

wherein R is selected from the group consisting of

14. The sol-gel of claim 13 , wherein the acid stabilizer is acetic acid.

15. The sol-gel of claim 13 , wherein the organic solvent is anhydrous.

16. The sol-gel of claim 13 , wherein the pH of the sol-gel is about 3 to about 4.

17. The sol-gel of claim 13 , wherein a weight fraction of acid stabilizer in the sol-gel is about 0.2 wt % to about 5 wt %.

18. The sol-gel of claim 13 , wherein R is

19. The sol-gel of claim 18 , wherein R is

20. The sol-gel of claim 18 , wherein R is

21. The sol-gel of claim 13 , wherein R is

22. The sol-gel of claim 21 , wherein R is

23. The sol-gel of claim 21 , wherein R is

Assignees

• Boeing Co

Inventors

• Moore James A
• Huff Daniel W
• Kennedy Dennis K

Classifications

• C09D5/086 Primary

  Organic or non-macromolecular compounds · CPC title

• C09D1/00

  Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances · CPC title

• C09D5/00

  Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced {(electrically insulating plastics, resins or waxes H01B3/30)}; Filling pastes · CPC title

• C09D5/08

  Anti-corrosive paints · CPC title

• C09D7/20

  Diluents or solvents · CPC title