C - Chemistry – Metallurgy – 11 – D
Patent
C - Chemistry, Metallurgy
11
D
C11D 17/06 (2006.01) C11D 11/00 (2006.01)
Patent
CA 2147744
High-density extrudates are produced under pressure, with a homogenous solid premix being pressed into a strand at these pressures and, following extrusion, the strand being cut up by a cutter to the predetermined granulate size, but with no essential increase in the pressure and thus in the specific work as the throughput is increased. This is accomplished by using in the extru- sion premix a self-regulating system consisting of preparation constituents having intrinsically viscous effects and preparation constituents having dilatant effects. Since, in macroscopic terms, there is no change in the pressure in the compound sufficient to effect an essential change in the specific work, the extrusion throughput can be increased in a given system with approximately the same temperature or in the same temperature range as before the increase in throughput (approximate constancy of tempera- ture). As a result, temperature-sensitive constituents, for example peroxy bleaching agents, can also be extruded despite the in- crease in throughput.
Artiga Gonzalez Rene-Andres
Jacobs Jochen
Kuehne Norbert
Larson Bernd
Pawelczyk Hubert
Borden Ladner Gervais Llp
Henkel Kommanditgesellschaft Auf Aktien
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