Method for blending a gas into a high viscosity liquid

Details Method for blending a gas into a high viscosity liquid Method for blending a gas into a high viscosity liquid

1994-09-22

1996-01-02

Kuhns, Allan R.

Plastic and nonmetallic article shaping or treating: processes

With measuring, testing, or inspecting

Measuring a weight or volume

264 50, 261DIG26, 3661521, 3661621, 3661791, 3661824, B29C 4434

Patent

active

054805970

ABSTRACT:
The objectives of the present invention are achieved by preparing a foamable composition comprising a viscous liquid and a gas homogeneously dispersed in the liquid. The compositions are prepared by blending a pressurized gas with the viscous liquid in a mixing chamber. In accordance with the present method the flow rate of the pressurized gas into the mixing chamber is controlled as a function of the flow rate of at least one high viscosity liquid into said chamber. The apparatus includes a means for controlling the flow rate of the pressurized gas as a function of either the difference in the feed pressures of said gas and said liquid or a predetermined ratio of the volumes of liquid and gas present in said mixing chamber.

REFERENCES:
patent: 4259402 (1981-03-01), Cobbs, Jr. et al.
patent: 4391765 (1983-07-01), Lee et al.
patent: 4778631 (1988-10-01), Cobbs, Jr. et al.
patent: 4779762 (1988-10-01), Klein et al.
patent: 5139715 (1992-08-01), Katsuno et al.
patent: 5175171 (1992-12-01), Shinmi et al.
patent: 5207352 (1993-05-01), Porter et al.
patent: 5330724 (1994-07-01), Bauman et al.

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