Activation method using modifying agent

Patent metadata

Field	Value
Publication number	US-9909020-B2
Application number	US-78453407-A
Country	US
Kind code	B2
Filing date	Apr 5, 2007
Priority date	Jan 21, 2005
Publication date	Mar 6, 2018
Grant date	Mar 6, 2018

Abstract

The present invention relates to a method of activating an organic coating to enhance adhesion of the coating to a further coating and/or to other entities comprising applying a solvent and a surface chemistry and/or surface topography modifying agent to the organic coating.
The invention also relates to a coated substrate having an activated coating, wherein the adhesion of the coating to a further coating and/or other entities has been enhanced by application of a solvent and a surface chemistry and/or surface topography modifying agent to the coating.
The invention further relates to an activation treatment for an organic coating to enhance adhesion of the coating to a further coating and/or to other entities comprising a solvent and a surface chemistry and/or surface topography modifying agent and a method for the preparation of the activation treatment.

First claim

The invention claimed is:

1. A method of activating an organic paint coating previously applied to and present on a substrate to increase adhesion of the organic paint coating to a further coating and/or to other entities selected from adhesives, sealants, pin hole fillers and pressure sensitive decals or logos, the method comprising:
applying an activation treatment to the organic paint coating present on the substrate, the activation treatment consisting of a solvent and a surface chemistry and/or surface topography modifying agent which facilitates surface exchange or transesterification, and optionally an additive, wherein the activation treatment activates the organic paint coating to increase adhesion of a further coating and/or other entities selected from adhesives, sealants, pin hole fillers and pressure sensitive decals or logos to the organic paint coating present on the substrate, and wherein the agent which facilitates surface exchange or transesterification is an alkyltitanate, alkyltitanate chelate, alkylzirconate, alkylzirconate chelate, or combinations thereof,
wherein, the optional additives when present are provided in an amount of less than about 10% based on the total weight of the combination of solvent, agent and additive, and
the additive is selected from at least one of stabilizers, pigments and dyes.

2. A method according to claim 1 , in which the agent which facilitates surface exchange or transesterification is selected from tetra-ethyltitanate tetraisopropyltitanate, tetra-n-propyltitanate, tetra-n-butyltitanate, tetra-2-ethylhexyltitanate, tetraethyltitanate, triethanolamine titanate chelate, tetra-n-propylzirconate, tetra-i-propylzirconate tetra-n-butylzirconate tetra-t-butylzirconate, tetra-t-pentylzirconate and triethanolamine zirconate chelate.

3. A method according to claim 1 , in which the modifying agent is present in an amount more than about 0.001% based on the total weight of the combination of solvent and agent.

4. A method according to claim 1 , in which the modifying agent is prepared in-situ from its constituent components.

5. A method according to claim 1 , in which the solvent is present in an amount less than about 99.999% based on the total weight of the combination of solvent and agent.

6. A method according to claim 1 , in which an additive is applied to the organic coating.

7. A method according to claim 6 , in which the additive is selected from stabilizers.

8. A method according to claim 6 , in which the organic coating is a polyurethane, epoxy, polyester, polycarbonate and/or acrylic coating.

9. The method of claim 6 , wherein the additive is selected from pigment.

10. The method of claim 6 , wherein the additive is selected from dyes.

11. A method according to claim 1 , in which the solvent, agent and additive when present are applied either simultaneously, sequentially or separately.

12. A method according to claim 1 , in which the solvent, agent and additive when present are applied simultaneously in the form of an activation treatment.

13. A method according to claim 1 , in which the solvent, agent and additive when present are applied via a spray, brush, dip, knife, blade, hose, roller, wipe, curtain, flood, flow, mist, pipette or combinations thereof.

14. A method according to claim 1 , in which the organic coating is a polyurethane, epoxy, polyester, polycarbonate and/or acrylic coating.

15. A method according to claim 1 , in which excess solvent and/or agent are removed by solvent or water rinsing; dry, water or solvent wiping; air or gas knife; vacuum application; squeegee; and/or natural or forced convection evaporation.

16. A method according to claim 1 , in which the agent which facilitates surface exchange or transesterification is an alkyltitanate, alkylzirconate or combinations thereof.

17. A method according to claim 1 , in which the agent which facilitates surface exchange or transesterification is a tetra-C 1-8 alkyltitanate or a tetra-C 1-8 alkylzirconate.

18. A method according to claim 17 , in which the tetra-C 1-8 alkyl titanate or tetra-C 1-8 alkyl zirconate is tetra-propylzirconate or tetra-propyltitanate.

19. A method according to claim 18 , in which the tetrapropyltitanate or tetra-propylzirconate is tetra-n-propyltitanate or tetra-n-propylzirconate.

20. A method according to claim 1 , in which the solvent is an alcohol or ether or combination thereof.

21. A method according to claim 20 , in which the alcohol is selected from an alcohol having a molecular weight of less than about 150 and the ether is selected from an ether having a molecular weight of less than about 300.

22. A method according to claim 20 , in which the alcohol is selected from isopropanol or n-propanol and the ether is dipropylene glycol dimethyl ether.

23. A method according to claim 22 , in which the solvent is a combination of isopropanol or n-propanol and dipropylene glycol dimethyl ether.

24. A method according to claim 23 , in which the dipropylene glycol dimethyl ether is present in an amount of less than 50% or 20 to 40% based on the total weight of the combination of isopropanol or n-propanol and dipropylene glycol dimethyl ether.

25. A method according to claim 20 , in which excess solvent and/or agent are removed by solvent or water rinsing; dry, water or solvent wiping; air or gas knife; vacuum application; squeegee; and/or natural or forced convection evaporation.

26. A method for the preparation of the activation treatment according to claim 25 comprising the step of mixing the solvent with the surface chemistry and/or surface topography modifying agent which facilitates surface exchange or transesterification.

27. A method according to claim 20 , wherein the ether is selected from a glycol diether and a cyclic ether.

28. A method according to claim 20 , wherein the ether is a glycol diether selected from a C 1-6 alkyl ether or combinations thereof of ethylene glycols and propylene glycols.

29. A method according to claim 20 , wherein the ether is a glycol diether selected from diethylene glycol dimethylether, dipropylene glycol dimethylether, and diethylene glycol methylbutylether.

30. A method according to claim 20 , wherein the ether is dipropylene glycol dimethylether.

31. A method according to claim 1 , wherein the solvent is a combination of two or more solvents selected from solvent combinations of glycol ether:acetate combinations; ether:alcohol combinations; glycols and monoether combinations; and ether combinations.

32. A method according to claim 31 , wherein the glycol ether:acetate combination is dipropylene glycol dimethyl ether:tertiary butyl acetate.

33. A method according to claim 31 , wherein the ether:alcohol combinations are selected from dipropylene glycol dimethyl ether and a solvent selected from isopropyl alcohol, methanol, isobutanol, secondary butanol, tertiary butanol, ethoxy ethanol and/or ethylhexanol; and ethylene glycol monomethyl ether and a solvent selected from ethanol, methanol, ethoxyethanol and/or isopropanol.

34. A method according to claim 31 , in which the ether:alcohol combination is dipropyleneglycol dimethyl ether and isopropanol.

35. A method according to claim 31 , in which the ether:alcohol combination is dipropyle

Assignees

• Bateman Stuart Arthur
• Simons Ranya
• Wu Dong Yang
• Mcmahon Patrick James
• Bilyk Alexander
• Berry Douglas H
• Kobak Seana B
• Kirchner James F
• Straus Lori Clarice
• Johnson Mark Paul
• Boeing Co
• Commw Scient Ind Res Org

Inventors

• Bateman Stuart Arthur
• Simons Ranya
• Wu Dong Yang
• Mcmahon Patrick James
• Bilyk Alexander
• Berry Douglas H
• Kobak Seana B
• Kirchner James F
• Straus Lori Clarice
• Johnson Mark Paul

Classifications

• Y10T428/31504

  Composite [nonstructural laminate] · CPC title

• C08K5/0008

  Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59 · CPC title

• C09D7/80

  Processes for incorporating ingredients · CPC title

• B05D3/107

  Post-treatment of applied coatings · CPC title

• Y10T428/31678

  Of metal · CPC title