C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
402/304, 402/357
C08F 2/24 (2006.01) C08F 14/06 (2006.01) C08F 18/06 (2006.01)
Patent
CA 1137248
Abstract of the Disclosure A one-step process for the emulsion polymerization of vinyl chloride using a water-soluble initiator and a prehomog- enized aqueous emulsifier system of (1) a C12-C18 straight chain alkyl or alkenyl surfactant and (2) a C16-C20 straight chain alkyl or alkenyl alcohol and/or a straight chain saturated hy- drocarbon having a carbon content of greater than 18 is dis- closed. Suitable examples of straight chain surfactants include sodium lauryl sulfate and sodium oleate. Suitable alcohols in- clude stearyl alcohol, cetyl alcohol and eicosanol. A suitable hydrocarbon is eicosane. The resulting homo- and copolymer latices have excellent mechanical stabilities, particle sizes generally larger than obtainable using only the mixed surfac- tant system without prehomogenization of the emulsifier system and good thermal stability.
286649
Gowling Lafleur Henderson Llp
Stauffer Chemical Company
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