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US 5,494,970 AGranted
Coating composition for a clearcoat with improved solvent and acid resistance
AssigneeBASF SE
InventorPaul Serdiuk
Life of this patent
Estimating the term…
Abstract
A coating composition for a clearcoat in a multilayer coating system for metallic substrates is described, comprising: A) a resin with epoxy and hydroxy functionality; B) a resin with anhydride functionality; C) an aminoplast resin; and D) additives selected from the group consisting of solvents, catalysts, flow agents, hindered amine light stabilizers, ultraviolet absorbers.
Claims9
A solvent-borne coating composition consisting essentially of
- A) a resin consisting essentially of epoxy and hydroxy functionality present in an amount between 10 to 35% by weight;
- B) a resin consisting essentially of anhydride functionality present in an amount between 50 to about 75% by weight;
- C) an aminoplast resin present in an amount between 5 to about 20% by weight;
- and
- D) additives selected from the group consisting of solvents, catalysts, flow agents, hindered amine light stabilizers and ultraviolet absorbers present in an amount between 1 to 15% by weight.
2 more elements
A solvent borne coating composition consisting essentially of
- A) a polyacrylate resin having epoxy and hydroxy functionality consisting essentially of
- a.sub.1) about 10 to about 60 % by weight of an ethylenically unsaturated monomer having an epoxy group;
- a.sub.2) about 20 to about 50% by weight of an ethylenically unsaturated monomer having a hydroxy group;
- a.sub.3) about 20 to about 65% by weight of other ethylenically unsaturated monomers;
- B) a polyacrylate resin having anhydride functionality consisting essentially of
- b.sub.1) about 20 to about 50% by weight of an ethylenically unsaturated monomer with an anhydride group;
- and
- b.sub.2) about 50 to about 80% by weight of other ethylenically unsaturated monomers;
- C) an aminoplast resin;
- and
- D) additives selected from the group consisting of solvents, catalysts, flow agents, hindered amine light stabilizers and ultraviolet absorbers.
8 more elements
Dependencies are inferred from the claim text.