23-05-2019 дата публикации
Номер: US20190153244A1
Electrodepositable coating compositions containing 1,1-di-activated vinyl compounds are described. The coating compositions produce cured coating layers that exhibit resistance to cratering. The coating compositions can be used in electrodepositable coating composition formulations. 1. An elecrodepositable coating composition comprising:(A) a polymer comprising (1) a reactive functional group and/or (2) a salt group or a salt-forming group; and (b1) a 1,1-di-activated vinyl compound, or a multifunctional form thereof, or a combination thereof;', '(b2) a polymerization reaction product of a 1,1-di-activated vinyl compound, or a multifunctional form thereof, or a combination thereof; and/or', '(b3) an addition reaction product of (1) the polymer component (A) and (2) a 1,1-di-activated vinyl compound, or a multifunctional form thereof, or a combination thereof., '(B) at least one component comprising2. The coating composition of claim 1 , wherein the coating composition is water dispersible.3. The coating composition of claim 1 , wherein the polymer component (A) comprises (1) an active hydrogen functional group and (2) a cationic salt group or an anionic salt group.4. The coating composition of claim 1 , comprising 0.1-30 percent by weight of component (b1) and/or (b2) claim 1 , based on total weight of resin solids in the coating composition.5. The coating composition of claim 1 , comprising 1-15 percent by weight of component (b1) and/or (b2) claim 1 , based on total weight of resin solids in the coating composition.6. The coating composition of claim 1 , wherein the 1 claim 1 ,1-di-activated vinyl compound comprises a methylene dicarbonyl compound claim 1 , a dihalo vinyl compound claim 1 , a dihaloalkyl disubstituted vinyl compound claim 1 , or a cyanoacrylate compound claim 1 , or a multifunctional form of any thereof claim 1 , or a combination of any thereof.7. The coating composition of claim 6 , wherein the 1 claim 6 ,1-di-activated vinyl compound comprises:a ...
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