C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
400/3072, 400/65
C09D 5/00 (2006.01) C08F 220/34 (2006.01) C09D 5/02 (2006.01) C09D 133/14 (2006.01)
Patent
CA 1331899
ABSTRACT OF THE DISCLOSURE Aqueous coating compositions forming coatings having improved water resistance include an anionic species scavenging system. The scavenging system includes volatile base and an aqueous dispersion of water-insoluble, weak base-functional poly- mer particles. The particles are polymerized from monomer including a weak base-fonctional monomer such as 2-(diethylamino)ethyl methacrylate or 2-(t-butylamino)ethyl methacrylate. In one embodiment, a two stage process is employed to prepare the particles and 2-(dimethylamino)ethyl methacrylate is included only in the initial stage. In a second embodiment, a single stage process uses 2-(t-butylamino) methacrylate. The volatile base maintains the pH of the coating composition above the pKa of the weak base prior to and during application of the coating composition. As the volatile base is lost, the weak base is protonated and forms ion pairs with anionic species such as anionic surfactant.
585315
Chou Chuen-Shyoung
Van Rheenen Paul
Gowling Lafleur Henderson Llp
Rohm And Haas Company
LandOfFree
Aqueous coating compositions including anionic species... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Aqueous coating compositions including anionic species..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Aqueous coating compositions including anionic species... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1279241