B - Operations – Transporting – 01 – F
Patent
B - Operations, Transporting
01
F
400/1344, 400/50
B01F 3/22 (2006.01) C08F 291/00 (2006.01) C08L 1/08 (2006.01) C08L 101/00 (2006.01)
Patent
CA 1052487
ABSTRACT OF THE DISCLOSURE Process for the preparation of aqueous homo- geneous polymer emulsion which comprises dispersing, generally with agitation or under shear conditions, in an aqueous surfactant system a discontinuous phase consisting essentially of at least one polymer, e.g., cellulosic compounds such as nitrocellulose, etc., dissolved in essentially a monomer system, e.g., acrylics, methacrylics, styrene, ect., to form an aqueous dispersion of polymer monomer droplets, and polymerizing the aqueous dispersions by free radical polymerization whereby the monomer within the droplets becomes polymerized thereby forming a substantially homogeneous blend of at least two polymers within the particles of the emulsion. The particles have on the average a diameter of 5 microns or less. The aqueous emulsions comprise an aqueous continuous phase and dispersed therein particles having an average diameter of up to 5 microns, the particles being substantially a homogeneous blend of a cellulosic compound, e.g., ester, and a polymer derived from at least one acrylic type monomer in the amount of at least 10 percent by weight. The aqueous emulsions are useful for protective and decora- tive coatings and as adhesives.
230331
Murphy Charles V.
Zunker David W.
E.i. Du Pont de Nemours And Company
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