Coating processes – With post-treatment of coating or coating material – Heating or drying
Patent
1996-09-03
1998-08-11
Pianalto, Bernard
Coating processes
With post-treatment of coating or coating material
Heating or drying
427299, 427322, 427444, B05D 302
Patent
active
057925151
ABSTRACT:
It is well known that coating speeds are limited due to the onset of air entrainment. These limiting coating speeds have been found to be highest on solid surfaces of intermediate wettability with respect to water, and in particular, on surfaces having high dispersion and low polar surface free energies as determined by contact angle analysis. Described herein is a method of controlling the solid surface free energies, and hence maximum coating speeds, by using suitably chosen surfactants in subbing layers and pre-coated packs of the material being coated. Aromatic hydrocarbon ionic surfactants, such as Alkanol XC, aryl-ended sulphosuccinates and aryl-ended tricarballylates, are particularly beneficial in this respect.
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patent: 5480760 (1996-01-01), Bailey et al.
Kistler, SF, 1973 in "Wettability", ed. JC Berg, Marcel Dekker, NY (no month avail.).
Gutoff EB & Kendrick CE, 1982, A1ChE, J., 28, 459 "Dynamic Contact Angles"0 (no date avail.).
Buonopane RA, Gutoff EB & Einmore MMTR, 1986 A1ChE. J., 32, 682, "Effect of Plunging Tape Surface Properties on Air Entrainment Velocity" (no month avail.).
Perry RT, 1967, PhD Thesis, University of Minnesota, Minneapolis (no month avail.).
Owens DK & Wendt RC, 1969, J. App. Polymer Sci., 13, 1741, "Estimation of the Surface Free Energy of Polymers" (no month avail.).
Fowkes (1962, J. Phys. Chem., 66, 382), Determination of Interfacial Tensions Contact Angles and Dispersion Forces in Surfaces by Assuming Additivity of Intermolecular Interactions in Surfaces (no month avail.).
Blake Terence Desmond
Morley Stephen David
Eastman Kodak Company
Pianalto Bernard
Rosenstein Arthur H.
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