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
1996-12-20
1998-12-29
Sergent, Rabon
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...
524501, 524591, 524840, 525123, 525127, 525128, 525130, 525131, 525454, 525455, 528 71, C08J 305, C08J 303, C08L 7504, C09D17504
Patent
active
058543325
ABSTRACT:
Aqueous dispersions of urethane polymers and vinyl polymers (e.g., acrylics) that provide water-based coating compositions with good adhesion following humidity exposure are further improved by providing branching chain extension of the polyurethane. The branched polymers provide improved metallic pigment orientation in coating compositions. Branching is provided by the use of chain extending agents selected from polyamines having at least three primary amine groups and polyols having at least three hydroxyl groups. The vinyl monomers are polymerized in the presence of the aqueously dispersed polyurethane.
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Fortuna Norene E.
Natesh Anbazhagan
Olson Kurt G.
Swarup Shanti
Millman Dennis G.
PPG Industries Inc.
Sergent Rabon
Stachel Kenneth J.
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