Continuous preparation of aqueous non-self-emulsifying polymer d

Details Continuous preparation of aqueous non-self-emulsifying polymer d Continuous preparation of aqueous non-self-emulsifying polymer d

1990-02-08

1992-06-23

Lovering, Richard D.

Compositions

Preservative agents

Anti-corrosion

252311, 366 79, 366266, 366318, 523501, 523504, 524800, B01J 1300, C08J 305

Patent

active

051240734

ABSTRACT:
Aqueous non-self-emulsifying polymer dispersions having small particles and a long shelf life and based on highly viscous reaction resins are prepared without the addition of solvents, by means of an intensively dispersing screw apparatus, by a continuous process in which the preparation of the polymer dispersion is carried out in an intensive shear zone of the screw apparatus, the water/reaction resin ratio in this intensive shear zone corresponding to the phase inversion point or being close to it, and the specific energy supply is 0.01-0.15 kWh/kg, the residence time is 0.1-60 sec and the shear gradient is 2,000-20,000 sec.sup.-1.

REFERENCES:
patent: 1923888 (1933-08-01), Robinson
patent: 2213557 (1940-09-01), Tisdale et al.
patent: 3032430 (1962-05-01), Heller
patent: 3635445 (1972-01-01), Schwab et al.
patent: 4175871 (1979-11-01), Suh et al.
patent: 4233418 (1980-11-01), Lingier et al.
patent: 4970258 (1990-11-01), Homma et al.

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