Continuous preparation of aqueous secondary polyacrylate...

Details Continuous preparation of aqueous secondary polyacrylate... Continuous preparation of aqueous secondary polyacrylate...

C - Chemistry, Metallurgy

08

J

C08J 3/07 (2006.01) B01F 3/12 (2006.01) C08J 3/03 (2006.01) C08J 3/21 (2006.01) C08L 33/00 (2006.01)

Patent

CA 2088217

O.Z. 0050/42977 Abstract of the Disclosure: Aqueous secondary poly- acrylate dispersions having a long shelf life and based on the polyacrylate resin systems are prepared by means of intensively dispersing screw extruders by a continuous process, on which the preparation of the secondary dispersion is carried out, after neutralization of the solvent-free copolymer melt or of the dissolved copolymer, in the shearing section of the screw extruder, and the specific energy input is 0.001-0.25 kWh/kg, the residence time in the shear field is 0.1-120 sec and the shear gradient is 1,000-12,000 1/sec.

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