Binder vehicle and coating medium composition and the use thereof for multi-layer coating
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United States of America Patent
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Jul 31, 2001
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N/A
app pub date -
Dec 11, 1998
filing date -
Jun 12, 1996
priority date (Note) -
Expired
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Abstract
A binder vehicle composition which is suitable for coating media, containing: A) 20 to 77% by weight of one or more binder vehicles based on oligomeric or polymeric polyol compounds with a hydroxyl number of 80 to 300, an acid number of 0 to 30, a number average molecular weight (Mn) of 500 to 10,000, and a glass transition temperature of -20 to +70.degree. C.; B) 77 to 20% by weight of crosslinking agents based on aliphatic and/or cycloaliphatic polyisocyanates; C) 3 to 20% by weight of oligo- or polyesters, which contain carboxyl groups, as catalyst resins, which have an acid number of 210 to 300 mg KOH/g and a number average molecular weight (Mn) of 420 to 3000; and one or more organic solvents and/or water.
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