Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Patent
1995-12-19
1998-12-15
Niland, Patrick D.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
525123, 525124, 525440, 525455, C08J 320, C08K 320, C08L 7500, C08F 830
Patent
active
058498354
ABSTRACT:
A curable, film-forming composition is provided which includes: (a) a hydroxyl-containing acrylic solution polymer, and (b) a polyisocyanate crosslinking agent. The hydroxyl-containing acrylic solution polymer is present in an amount ranging from between about 60 to about 90 weight percent; and, the polyisocyanate crosslinking agent is present in an amount ranging from between about 10 to about 40 weight percent. The acrylic solution polymer is the reaction product of: (a) a cycloaliphatic and/or aromatic ester of (meth)acrylic acid having at least 6 carbon atoms in the cycloaliphatic and/or aromatic group, and (b) a hydroxyl functional acrylic monomer component. The hydroxyl functional acrylic monomer component is present in an amount such that the hydroxyl number of the resulting acrylic solution polymer is less than 60. This invention also provides a color-plus-clear coating system. This system includes: (a) applying a film-forming base coat onto a substrate, and (b) applying a clear, film-forming topcoat over the base coat. The clear topcoat includes the curable, film-forming composition described above.
REFERENCES:
patent: 4345057 (1982-08-01), Yamabe et al.
patent: 4565730 (1986-01-01), Poth et al.
patent: 5279862 (1994-01-01), Corcoran et al.
patent: 5445850 (1995-08-01), Das et al.
Das Suryya K.
Kilic Soner
Lauer Andrew J.
Chirgott Paul S.
Niland Patrick D.
PPG Industries Inc.
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