One-component baking enamels
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United States of America Patent
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Mar 10, 1987
Grant Date -
N/A
app pub date -
May 24, 1984
filing date -
Jun 24, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
One-component baking enamels of polyesters, containing hydroxyl groups, and polyisocyanates, wherein the polyisocyanate component consists of 2-methyl-1,5-diisocyanatopentane (MPDI) having the formula (I): ##STR1## which is blocked totally or partially by .epsilon.-caprolactam or acetoxime, or a mixture of the same with 2-ethyl-1,4-diisocyanatobutane (EBDI) having the formula (II): ##STR2## which is blocked totally or partially by .epsilon.-caprolactam or acetoxime, wherein the diisocyanate mixture of (I) and (II) has about 88 to 99% by weight of (I) and about 12 to 1% by weight of (II) and the free isocyanate (NCO) content is up to about 10% by weight. The one-component baking enamels are suitable for application to metal, glass and plastic objects and exhibit excellent flexibility and weather resistance.
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