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US 4,400,489 AGranted
Aerially-crosslinking polyacrylate coating agents
AssigneeBayer Aktiengesellschaft
InventorsRolf Dhein, Lothar Fleiter
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AssigneeBayer Aktiengesellschaft
InventorsRolf Dhein, Lothar Fleiter
Estimating the term…
The invention relates to an aerially-crosslinking, pigmented or non-pigmented coating agent consisting of conventional lacquer auxiliaries and an aerially-crosslinking binder which has been reacted to form a dicarboxylic acid semi-ester by the reaction of a copolymer consisting of copolymerized units of at least one ester carrying at least one 1,2-epoxide group or hydroxyl group of an .alpha.,.beta.-monoolefinically unsaturated C.sub.3 -C.sub.5 -carboxylic acid and at least one vinyl or vinylidene monomer which is different therefrom with at least one drying fatty acid and optionally with at least one cyclic dicarboxylic acid anhydride, characterized in that the coating agent contains as an additional lacquer auxiliary from 0.2 to 2% by weight of at least one .alpha.-dicarbonyl compound, based on the aerially-crosslinking binder.
An aerially-cross-linking coating agent comprising an aerially-cross-linking binder comprising a dicarboxylic acid semi-ester formed by the reaction of a copolymer consisting of copolymerised units of at least one ester carrying at least one 1,2-epoxide group or hydroxyl group of an .alpha.,.beta.-monoolefinically unsaturated C.sub.3 -C.sub.5 -carboxylic acid and at least one vinyl or vinylidene monomer which is different therefrom with at least one drying fatty acid wherein the coating agent contains as an additional lacquer auxiliary from 0.2 to 2% by weight of at least one .beta.-dicarbonyl compound, based on the aerially-cross-linking binder.
Dependencies are inferred from the claim text.