Water → Butyl prop-2-enoate;prop-2-enoic acid;styrene

Beteiligte Stoffe

Reaktionsschritte

A styrene/butyl acrylate/acrylic acid latex emulsion is prepared according to the process described in U.S. Pat. No. 5,418,108. In particular, a polymer latex is prepared by the emulsion polymerization of styrene, butyl acrylate and acrylic acid (82/18/2 parts) in a nonionic/anionic surfactant solution as follows. In a reaction vessel are mixed 352 grams of styrene, 48 grams of butyl acrylate, 8 grams of acrylic acid, and 12 grams of dodecanethiol. To the reaction vessel is added 600 milliliters of deionized water in which 9 grams of sodium dodecyl benzene sulfonate anionic surfactant (NEOGEN R™, which contains 60% of active component), 8.6 grams of polyoxyethylene nonyl phenyl ether nonionic surfactant (ANTAROX 8971™, which contains 70% of active component), and 4 grams of ammonium persulfate initiator are dissolved. The resulting emulsion is then polymerized at 70° C. for 8 hours. The resulting latex contains 40% by weight of solids.

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