Aqueous emulsions containing homogeneous particles of cellulosic

Details Aqueous emulsions containing homogeneous particles of cellulosic Aqueous emulsions containing homogeneous particles of cellulosic

1974-07-02

1976-04-27

Czaja, Donald E.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

526319, 526320, 526200, C08L 118, C08L 110

Patent

active

039533867

ABSTRACT:
Process for the preparation of aqueous homogeneous polymer emulsion which comprises mixing, generally with agitation or under shear conditions, water, surfactant, at least one polymer, e.g., cellulosic compounds, and at least one monomer, e.g., acrylics, methacrylics, styrene, etc., the polymer being soluble in said monomer, to form a dispersion of polymer-monomer particles in water; then subjecting said dispersion to conditions such that the monomer within the particles becomes polymerized by free radical polymerization 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, the cellulosic compound being soluble in the monomer in the amount of at least 10 percent by weight. The aqueous emulsions are useful for protective and decorative coatings and as adhesives.

REFERENCES:
patent: 2171765 (1934-12-01), Rohm et al.
patent: 2839479 (1958-06-01), Caldwell
patent: 3061598 (1962-10-01), Cornell
patent: 3716505 (1973-02-01), Ohe et al.

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