US-12624224-B2 - Systems for treating a metal substrate

Abstract

Disclosed herein are systems for treating a substrate. The system may include a cleaner composition, a deoxidizing composition comprising a Group IVA metal and/or a Group IVB metal and free fluoride and having a pH of 1.0 to 3.0, and/or a seal composition. The system may also include a coating composition. The cleaner composition, deoxidizing composition, and/or seal composition may comprise a homopolymer or a copolymer comprising a phosphorous-containing monomeric subunit m1. Also disclosed is a deoxidizing composition comprising a Group IVA metal and a Group IVB metal and free fluoride and having a pH of 1.0 to 3.0. Also disclosed are methods of treating a substrate. Also disclosed are treated substrates.

Inventors

• Elizabeth S. Brown-Tseng
• Visham Appadoo
• Edward R. Millero, Jr.
• Se Reyon Lee
• Steven J. Lemon
• Steven E. Bowles
• Joseph P. Kriley
• Marvin M. Pollum, Jr.
• Masayuki Nakajima
• Ljiljana Maksimovic
• Brian K. Rearick
• Adam B. Powell
• David J. Fortman
• Loubna Pagnotti

Assignees

• PPG INDUSTRIES OHIO, INC.

Dates

Publication Date

20260512

Application Date

20200211

Claims (20)

1. 1 . A system for deoxidizing and coating a substrate, comprising: a deoxidizing composition comprising a Group IVA metal in an amount of 10 ppm to 1,000 ppm, a Group IVB metal in an amount of 200 ppm to 5,000 ppm, and free fluoride in an amount of 2 ppm to 100 ppm, the deoxidizing composition having a pH of 1.0 to 3.0 and being substantially free of chromium, wherein the amounts are based on total weight of the deoxidizing composition; and an adhesive coating composition comprising: an epoxy-containing component in an amount of 45 percent by weight to 85 percent by weight; a guanidine curing agent in an amount of 0.5 percent by weight to 20 percent by weight; and elastomeric particles in an amount of 11 percent by weight to 40 percent by weight; wherein percent by weight is based on total weight of the adhesive coating composition.
2. 2 . The system of claim 1 , wherein the deoxidizing composition further comprises a homopolymer or a copolymer comprising a phosphorous-containing monomeric subunit m1.
3. 3 . The system of claim 2 , wherein the copolymer of the deoxidizing composition further comprises a non-phosphorous-containing monomeric subunit m2.
4. 4 . The system of claim 1 , wherein: (a) at least 50% by weight of the elastomeric particles comprise a styrene butadiene core based on total weight of the elastomeric particles; and/or (b) wherein at least 50% by weight of the elastomeric particles based on total weight of the elastomeric particles have an average particle size of less than 150 nm as measured by transmission electron microscopy; and/or (c) wherein no more than 50% by weight of the elastomeric particles comprise a polybutadiene core and/or a polysiloxane core based on total weight of the elastomeric particles.
5. 5 . The system of claim 1 , wherein the adhesive coating composition further comprises at least one accelerator.
6. 6 . The system of claim 5 , wherein the at least one accelerator comprises a latent accelerator, an encapsulated accelerator, a non-latent accelerator, a non-encapsulated accelerator, or combinations thereof.
7. 7 . The system of claim 1 , further comprising a cleaner composition and/or a seal composition.
8. 8 . The system of claim 7 , wherein the cleaner composition and/or the seal composition comprises a homopolymer or a copolymer comprising a phosphorous-containing monomeric subunit m1.
9. 9 . The system of claim 8 , wherein the copolymer of the cleaner composition and/or the seal composition further comprises a non-phosphorous-containing monomeric subunit m2.
10. 10 . A method of treating a substrate with the system of claim 1 , comprising: contacting at least a portion of a surface of the substrate with the deoxidizing composition; and subsequently contacting at least a portion of a surface of the substrate with the adhesive coating composition.
11. 11 . The method of claim 10 , wherein the surface is not contacted with a pretreatment composition.
12. 12 . The method of claim 10 , further comprising: contacting at least a portion of a surface of the substrate with a cleaner composition; and/or contacting at least a portion of a surface of the substrate with a seal composition.
13. 13 . A treated substrate produced by the method of claim 10 .
14. 14 . The treated substrate of claim 13 , wherein the treated substrate is at least partially coated with the adhesive coating composition.
15. 15 . The treated substrate of claim 13 , wherein the treated substrate is at least partially embedded in the adhesive coating composition.
16. 16 . Protective clothing comprising the treated substrate of claim 13 .
17. 17 . A vehicle comprising the treated substrate of claim 13 .
18. 18 . A can comprising the treated substrate of claim 13 .
19. 19 . An article comprising the treated substrate of claim 13 , wherein the substrate is comprised of a first material.
20. 20 . The article of claim 19 , further comprising a second substrate comprised of the first material and/or a second material.

Description

CROSS-REFERENCE This application claims the benefit of U.S. Provisional Patent Application Ser. No. 62/803,810, filed on Feb. 11, 2019, and U.S. Provisional Patent Application Ser. No. 62/890,703, filed on Aug. 23, 2019, which are incorporated herein by reference. FIELD OF THE INVENTION The present invention relates to compositions, systems and methods for treating a metal substrate. BACKGROUND OF THE INVENTION The use of protective coatings on metal substrates for improved corrosion resistance and paint adhesion is common. Coating compositions, including sealants and adhesives, are utilized in a wide variety of applications to treat a variety of substrates or to bond together two or more substrate materials. SUMMARY OF THE INVENTION Disclosed is a system for treating a substrate, comprising: a cleaner composition; and/or a deoxidizing composition comprising a Group IVA metal and/or a Group IVB metal and free fluoride and having a pH of 1.0 to 3.0; and/or a seal composition; and a coating composition. Also disclosed is a method for treating a substrate, comprising contacting at least a portion of a surface of the substrate with a cleaner composition; and/or contacting at least a portion of the surface with a deoxidizing composition comprising a Group IVA metal and/or a Group IVB metal and free fluoride and having a pH of 1.0 to 3.0; and/or contacting at least a portion of the surface with a seal composition; and contacting at least a portion of the surface with a coating composition. Also disclosed is a deoxidizing composition comprising: a Group IVA metal; a Group IVB metal; and free fluoride; and having a pH of 1.0 to 3.0. Also disclosed are substrates treated with the systems. Also disclosed are substrates treated with the methods. Also disclosed are substrates treated with the deoxidizing composition. DETAILED DESCRIPTION For purposes of the following detailed description, it is to be understood that the invention may assume various alternative variations and step sequences, except where expressly specified to the contrary. Moreover, other than in any operating examples, or where otherwise indicated, all numbers such as those expressing values, amounts, percentages, ranges, subranges and fractions may be read as if prefaced by the word “about,” even if the term does not expressly appear. Accordingly, unless indicated to the contrary, the numerical parameters set forth in the following specification and attached claims are approximations that may vary depending upon the desired properties to be obtained by the present invention. At the very least, and not as an attempt to limit the application of the doctrine of equivalents to the scope of the claims, each numerical parameter should at least be construed in light of the number of reported significant digits and by applying ordinary rounding techniques. Where a closed or open-ended numerical range is described herein, all numbers, values, amounts, percentages, subranges and fractions within or encompassed by the numerical range are to be considered as being specifically included in and belonging to the original disclosure of this application as if these numbers, values, amounts, percentages, subranges and fractions had been explicitly written out in their entirety. Notwithstanding that the numerical ranges and parameters setting forth the broad scope of the invention are approximations, the numerical values set forth in the specific examples are reported as precisely as possible. Any numerical value, however, inherently contains certain errors necessarily resulting from the standard variation found in their respective testing measurements. As used herein, unless indicated otherwise, a plural term can encompass its singular counterpart and vice versa, unless indicated otherwise. For example, although reference is made herein to “an” epoxy and “an” accelerator, a combination (i.e., a plurality) of these components can be used. In addition, in this application, the use of “or” means “and/or” unless specifically stated otherwise, even though “and/or” may be explicitly used in certain instances. As used herein, “including,” “containing” and like terms are understood in the context of this application to be synonymous with “comprising” and are therefore open-ended and do not exclude the presence of additional undescribed or unrecited elements, materials, ingredients or method steps. As used herein, “consisting of” is understood in the context of this application to exclude the presence of any unspecified element, ingredient or method step. As used herein, “consisting essentially of” is understood in the context of this application to include the specified elements, materials, ingredients or method steps “and those that do not materially affect the basic and novel characteristic(s)” of what is being described. As used herein, the terms “on,” “onto,” “applied on,” “applied onto,” “formed on,” “deposited on,” “deposited onto,” mean formed, overlaid, deposited, or