Bead polymerisation process

Details Bead polymerisation process Bead polymerisation process

C - Chemistry, Metallurgy

08

F

400/5731

C08F 283/00 (2006.01) C08F 299/04 (2006.01) C08L 51/08 (2006.01) C08L 67/06 (2006.01)

Patent

CA 1159989

Case 388 ABSTRACT OF THE DISCLOSURE BEAD POLYMERISATION PROCESS A process for the preparation of rigid beads, of cross-linked polyester resin which beads may be solid or vesiculated, by forming an oil-in-water or a water-in-oil-in-water emulsion in which the oil phase contains an unsaturated polyester resin and an unsaturated organic monomer to provide said cross-linking and thereafter heating the emulsion to a temperature of at least 45°C before initiating polymerisation of the oil phase by the introduction into the system of a polymerisation initiator, and promoter system, if the latter is not already present in the emulsion.

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