Granted Patent B2

US 12,291,634 · App. 18/341,930 · Granted May 6, 2025

Inventors: Marvin Michael Pollum, Jr. (Pittsburgh, PA); Joseph Peter Kriley (Valencia, PA); Masayuki Nakajima (Wexford, PA); Ljiljana Maksimovic (Allison Park, PA); Brian Kirk Rearick (Allison Park, PA); Adam B. Powell (Wexford, PA); David Joseph Fortman (Pittsburgh, PA); Loubna Pagnotti (Wexford, PA)

Assignee: PPG Industries Ohio, Inc.

C08L63/04B32B27/38C08G59/226C08G59/245C08G59/4021C08G59/68C08K3/013C08L25/10C08L83/04C09D163/00C09J163/00C08G2150/00C08G2170/00C08K2201/019C08L2205/18C08L2207/53C08L2312/06

Abstract

Claims (30)

1. A composition comprising:

an epoxy-containing component in an amount of at least 45% to no more than 85% by weight based on total weight of the composition and comprising a bisphenol F epoxy resin;

elastomeric core-shell particles in an amount of greater than 11% by weight to 25% by weight based on total weight of the composition, wherein the core-shell elastomeric particles have an average particle size of 50 nm to 150 nm as measured by electron transmission microscopy;

a curing component, activatable by an external energy source, the curing component comprising at least one guanidine in an amount of 2% to 20% by weight based on total weight of the composition and comprising a D90 particle size of 25 mm measured by dynamic light scattering; and

an amine in addition to the at least one guanidine.

2. The composition of claim 1 , wherein the epoxy-containing component comprises an epoxy equivalent weight of 160 g/eq to 500 g/eq.

3. The composition of claim 1 , wherein the epoxy-containing component comprises an average epoxide functionality of greater than 1.0 and less than 3.2.

4. The composition of claim 1 , wherein no more than 50% by weight of the elastomeric core-shell particles comprise a polybutadiene core based on total weight of the elastomeric core-shell particles.

5. The composition of claim 1 , wherein the at least one guanidine comprises dicyandiamide.

6. The composition of claim 1 , wherein no more than 50% by weight of the elastomeric core-shell particles comprise a polysiloxane core based on total weight of the elastomeric core-shell particles.

7. The composition of claim 1 , further comprising fillers, a second curing agent, and/or additives.

8. The composition of claim 7 , wherein the second curing agent is a latent curing agent, an active curing agent, or combinations thereof.

9. The composition of claim 1 , wherein the composition is substantially free of additives, platy filler, and/or free radical initiators.

10. The composition of claim 1 , wherein the composition is comprises a coating composition, an adhesive composition, or a sealant composition.

11. The composition of claim 1 ,

wherein at least 50% by weight of the elastomeric core-shell particles comprise a styrene butadiene core based on total weight of the elastomeric core-shell particles.

12. The composition of claim 1 , wherein the composition is substantially free of platy filler.

13. A substrate, wherein a surface of the substrate is at least partially coated with the composition of claim 1 .

14. The substrate of claim 13 , wherein the substrate comprises an article, a part, or combinations thereof.

15. The substrate of claim 14 , wherein the part comprises a vehicular part.

16. The substrate of claim 14 , wherein the substrate comprises a vehicle.

17. The substrate of claim 16 , wherein the vehicle comprises a land vehicle or an aircraft.

18. An article comprising:

a first substrate;

a second substrate; and

the composition of claim 1 between the first and second substrates.

19. A method for forming a coating on a substrate surface comprising:

applying the composition of claim 1 to a surface of a first substrate; and

applying an external energy source.

20. The method of claim 19 , further comprising contacting a surface of a second substrate to the composition such that the composition is located between the first substrate and the second substrate.

Assignments (2)

Continuity (4)

References Cited (91)