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
1996-04-04
1997-12-30
Schofer, Joseph L.
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...
5263184, C08L 3100, C08F 2010
Patent
active
057031550
ABSTRACT:
Waterborne coating compositions are provided comprising a polymeric film-forming resin, a non-gelled copolymer and up to about 2.1 percent by weight silica, based on the total weight of resin solids in the coating compositions. The non-gelled copolymer is prepared from about 75 to about 95 percent by weight of an ethylenically unsaturated monomer such as methyl methacrylate, butyl acrylate, butyl methacrylate, styrene, and mixtures thereof; about 2 to about 12 percent by weight of an ethylenically unsaturated monomer having one acid functional group; and about 2 to about 20 percent by weight of an ethylenically unsaturated oligomeric monomer hating a number average molecular weight of about 1500 to about 4000 and which is derived from a hydroxyl functional acid having a predominantly hydrocarbon chain of from about 10 to 19 carbon atoms. Note that the percentages by weight are based upon the total solid weight of reactants used to prepare the copolymer.
The coating compositions may be applied to a substrate alone or as a clear film-forming composition in a color-plus-clear composite coating.
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Sadvary Richard J.
Swarup Shanti
PPG Industries Inc.
Sarofim Nabil
Schofer Joseph L.
Shideler Krisanne
Stachel Kenneth J.
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