Process for the production of latices based on conjugated...

Details Process for the production of latices based on conjugated... Process for the production of latices based on conjugated...

C - Chemistry, Metallurgy

08

F

C08F 2/24 (2006.01) C08F 36/04 (2006.01) C08F 236/12 (2006.01) C08F 291/00 (2006.01) C08F 292/00 (2006.01)

Patent

CA 2198447

Latices based on conjugated dienes are produced using emulsion polymerisation by introducing the monomers to be polymerised into the initially introduced seed latex in the presence of a free-radical forming activator and an emulsifier in such a manner that the ratio of the monomer polymerisation rate to the monomer feed rate is less than 0.7:1 and by performing polymerisation up to a monomer conversion of >= 95% at temperatures of 10 to 85°C, wherein the addition of the emulsifier is controlled in such a manner that the final particle size (TG L) of the latex to be produced is governed by the following equation: TG L = TG S × (m L/D L)1/3/(m S/D S)1/3, in which D L = density of the latex particles in the latex to be produced D S = density of the particles of the seed used m L = mass of the latex particles in the latex to be produced m S = mass of the particles of the seed used TG L = particle size of the latex to be produced TG S = particle size of the seed used.

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