Latex with two-particle size populations of vinylchloride polymers, manufacturing method thereof and use in plastisols

摘要

Production of latex containing two populations of particles of homo- or copolymers of vinyl chloride comprises polymerisation, in microsuspension, of monomer(s) in presence of primary seeding polymer (P1) containing organosoluble initiator(s); secondary seeding polymer (P2) with smaller particles than those of (P1); water; anionic emulsifier; soluble metallic salt; and reducing agent. Also claimed is latex produced by the method.