Coated substrates prepared from special polyols and oxalic acid
AssigneeBayer Aktiengesellschaft
InventorsBurkhard Kohler, Beate Baumbach, Christian Fussel, Joachim Probst
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Abstract
The present invention relates to coated substrates obtained by stoving mixtures containing A) 1 part by weight of ester group-free polyols having an OH content of 1 to 10%, B) 0.05 to 1 part by weight of oxalic acid and C) 0.2 to 5 parts by weight of organic solvents, at temperatures of 120° C. to 250° C. and a stoving time of 1 to 100 min on substrates. The present invention also relates to a process for preparing the coated substrates.
Claims4
A coated substrate obtained by stoving a mixture comprising
- A) 1 part by weight of an ester group-free polyol having an OH content of 1 to 10%,
- B) 0.05 to 1 part by weight of oxalic acid and
- C) 0.2 to 5 parts by weight of an organic solvent,
- at a temperature of 120° C. to 250° C. and a stoving time of 1 to 100 min on a substrate.
A process for the production of a coated substrate which comprises applying to a substrate a mixture comprising
- A) 1 part by weight of an ester group-free polyol having an OH content of 1 to 10%,
- B) 0.05 to 1 part by weight of oxalic acid and
- C) 0.2 to 5 parts by weight of an organic solvent,
- and stoving the coated substrate at a temperature of 120° C. to 250° C. for 1 to 100 minutes.
Dependencies are inferred from the claim text.