By Francis Scofield (auth.), J. L. Gardon, Joseph W. Prane (eds.)
ISBN-10: 1468407368
ISBN-13: 9781468407365
ISBN-10: 1468407384
ISBN-13: 9781468407389
Ecological standards are forcing a transformation in tech nology of industrially utilized coatings. at the present sol vent-borne coatings dominate this box yet within the following few years quickly expanding use might be made up of aqueous coatings, electrocoating, solvent-free liquid coatings which are cured by means of U. V.-light or electronbeam, and powder coatings. This monograph describes a few fresh advancements in those new "non-polluting" coating applied sciences. it truly is very unlikely to foretell how massive a percentage each one of those novel coatings will take from the normal in dustrial finishes industry which at this time represents an annual quantity of approximately a billion funds. In all likeli hood each one will locate its personal really good use. we are hoping that this monograph may help the reader to shape a point of view of a few of the novel coatings, their approach to program, their merits and their barriers. J. L. Gardon Joseph W. Prane Rahway, N. J.,and Elkins Park, Pa. October 15, 1972 v CONTENTS prestige of pollution keep watch over Regulations........... 1 Francis Scofield actual Characterization of Water Dispersed and Soluble Acrylic Polymers........................... five William H. Brendley, Jr. and Thomas H. Haag Methylated Urea Formaldehyde Cross-Linking brokers in Aqueous Emulsions............................... 25 Leonard J. Calbo Polymer Parameters Affecting Aqueous Topcoat structures. • . . . . . . . . . • . . . . . . • . . . . . . . . . • . • . . . 35 . • . . . . . . . .
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Additional resources for Nonpolluting Coatings and Coating Processes: Proceedings of an ACS Symposium held August 30–31, 1972, in New York City
Sample text
CYMEt® 11l6k Cross-Linking Agent. A fully etherified alkoxymethyl melamine derivative, widely utilized in electrocoating. paint Preparation and Electrocoating Procedure White pigmented formulations were prepared by blending the required amounts of acrylic resin, CYMEL 1116 amino cross-linking agent, diisopropanolamine, and UNI~NEID OR600tl titanium dioxide rutile pigment, and subsequently grinding the paste on a three-roll mill. The resulting paste was stirred under high speed agitation and small portions of deionized water were added.
Panel Preparation Phosphated cold rolled steel panels were used as the substrate in those experiments employing electrodeposition primers. After baking at 3S0°F for lS minutes, a commercial primer-surfacer was applied and baked for 30 minutes at 3S0°F. The left half of a number of the panels were wet sanded with 400 grit sandpaper, rinsed with distilled water, and given a dry off bake at 300°F for 10 minutes. The topcoat was applied and baked using a graduated bake 38 ROBERT A. onAVIANI schedule (room temperature to 200°F to 32S0F).
In an emulsion type formulation, water, dispersant, pigment and cellosolve were added in this order and dispersed with a Cowles Dissolver. ) was slowly added, and dispersion continued briefly in order to minimize foaming. The remainder of the emulsion was then added and stirred. The large scale use of additives was avoided as much as possible. Panel Preparation Phosphated cold rolled steel panels were used as the substrate in those experiments employing electrodeposition primers. After baking at 3S0°F for lS minutes, a commercial primer-surfacer was applied and baked for 30 minutes at 3S0°F.
Nonpolluting Coatings and Coating Processes: Proceedings of an ACS Symposium held August 30–31, 1972, in New York City by Francis Scofield (auth.), J. L. Gardon, Joseph W. Prane (eds.)
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