Thermosettable primer and topcoat for plastics, a method for applying and coated plastic articles
AssigneePPG Industries Ohio, Inc.
InventorsChristopher A. Verardi, Lawrence D. Meyers, William A. Humphrey
Life of this patent
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AssigneePPG Industries Ohio, Inc.
InventorsChristopher A. Verardi, Lawrence D. Meyers, William A. Humphrey
Estimating the term…
A liquid coating composition has: from about 5 to 45 percent by weight of resin solids of substantially saturated polyhydroxylated polydiene polymer having terminal hydroxyl groups; from about 10 to 50 percent by weight of resin solids of crosslinking material; from about 5 to 85 percent by weight of resin solids of polymeric film forming resin; and solvent. The solvent has at least 5 percent by weight of the solvent composition consisting of water; and/or at least one organic solvent having Hansen Solubility Parameters Sp.sub.o from about 8.0 to 10.0 (cal/cm.sup.3).sup.1/2, SP.sub.h from about 0.5 to 5.0 (cal/cm.sup.3).sup.1/2, and Sp.sub.p from about 0.2 to 3.0 (cal/cm.sup.3).sup.1/2 ; and/or mixtures thereof. The liquid coating composition can be solvent-based or aqueous-based and can additionally contain at least one pigment. The liquid coating composition can be coated directly onto thermoplastic and thermosetting plastic substrates, such as TPO and RIM, without the aid of flame or corona pretreatment, or the use of an adhesion promoter. A method of coating plastic substrates comprising the use of the liquid coating composition and a plastic article coated with the liquid coating composition are also disclosed.
A plastic article formed from a plastic material selected from the group consisting of thermoplastic olefins and reaction injected molding urethanes, the plastic article being coated with a film of a primer composition deposited directly onto a surface of the plastic article without the aid of flame or corona pretreatment, or the use of an adhesion promoter or tie coat, the primer composition comprising:
A plastic article formed from a plastic material selected from the group consisting of thermoplastic olefins and reaction injected molding urethanes, the plastic article being coated with a film of a basecoat composition deposited directly onto a surface of the plastic article without the aid of flame or corona pretreatment, or the use of an adhesion promoter or tie coat, the basecoat composition comprising:
A coated plastic article formed from a plastic material selected from the group consisting of thermoplastic olefins and reaction injected molding urethanes, the plastic article being coated with a film of a topcoat composition deposited directly onto a surface off the plastic article without the aid of flame or corona pretreatment, or the use of an adhesion promoter or tie coat, the topcoat composition comprising:
Dependencies are inferred from the claim text.