C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
400/3073, 400/65
C08F 214/06 (2006.01) C08F 2/22 (2006.01) C08F 210/02 (2006.01)
Patent
CA 1308512
ABSTRACT OF THE DISCLOSURE A finely-divided, monomodal protective-colloid stabilized aqueous dispersion of a copolymer of at least 75% by weight of units of vinyl chloride and ethylene and optionally copolymerized with up to 25% by weight of units of additional monomers unsatura- ted at the ethylene bond and having a solids content of 45 to 70% by weight, characterized in that the dispersions are not partially flocculated, the polymer has a mean particle size of 150 to 500 nm measured as mean weight in a disc centrifuge and a polydispersion index of not more than 1.8 and less than 50% of the polymer particles are larger than 1,000 nm and a process for the prepara- tion thereof using a single step radical polymerization of vinyl chloride, ethylene and optionally additional monomers such as vinyl esters useful as dispersion powders, adhesives, binders and concrete additives.
522046
Ball Peter
Hannebaum Manfred
Marquardt Klaus
Schulze Joachim
Selig Manfred
Macrae & Co.
Wacker-Chemie G.m.b.h.
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