NON-BLOOMING LOW FORMALDEHYDE COATING COMPOSITION
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United States of America Patent
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Issued Date -
Dec 27, 2012
app pub date -
Mar 8, 2011
filing date -
Mar 9, 2010
priority date (Note) -
Abandoned
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Abstract
Blooming may be reduced or eliminated in a low formaldehyde amino resin-crosslinkable coating composition by including in the composition, in addition to the ingredients necessary to form a crosslinked coating, an anti-blooming agent containing one or more of (i) an acid-functional polymer, (ii) ethylene glycol, propylene glycol or an ethylene glycol or propylene glycol polymer or copolymer, or (iii) for compositions containing the acidic catalyst p-toluene sulfonic acid (PTSA), a further acidic cure catalyst having greater hydrophobicity than PTSA. The anti-blooming agent has particular value in amino resin-crosslinkable alkyd resin formulations, but may be used in amino resin-crosslinkable coating compositions based on other film-forming polymers bearing amino resin-reactive functional groups including appropriately functionalized acrylic, polyester, vinyl and cellulose acetate butyrate (CAB) resins and nitrocellulose lacquers.
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