Process for preparing an aqueous dispersion of synthetic resin mutually dissolved with a cellulose acetate alkylate

Claim 1

A process for preparing a stable aqueous dispersion of synthetic resin particles, said particles containing cellulose acetate alkylate dissolved or homogeneously dispersed therein, which comprises the steps of: completely dissolving from 1 to 30 parts by weight of cellulose acetate alkylate and an effective initiating amount of oil-soluble radical polymerization initiator in 100 parts by weight of one or a mixture of liquid, radical-polymerizable, water-insoluble monomers capable of dissolving said cellulose acetate alkylate and said initiator, whereby to obtain a first liquid solution consisting essentially of said cellulose acetate alkylate and said initiator homogeneously dissolved in said monomer or monomers; then mixing said first liquid solution with water and with water-soluble protective colloid, water-soluble synthetic organic surfactant or mixture thereof effective for forming a stable aqueous dispersion of said monomer or monomers in water whereby to form a stable aqueous dispersion consisting essentially of droplets of said first liquid solution dispersed in water; then subjecting said dispersion to radical polymerization conditions effective to polymerize said monomer or monomers whereby to obtain an aqueous dispersion of particles of polymer of said monomer or monomers and containing said cellulose acetate alkylate dissolved or homogeneously dispersed therein.