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AssigneeBayer Aktiengesellschaft
InventorsWilfried Ebeling, Volkmar Tennemann
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The present invention relates to a process and apparatus for preparing flowable reaction mixtures. The process comprises (a) measuring the volumetric rate of flow of at least one of said reactants which contains dissolved gas, (b) measuring the density of at least the same reactant noted in step (a) by radiometry successively under high pressure and low pressure, (c) determining the quantitative rate of flow of the reactant noted in steps (a) and (b) from the measurements of steps (a) and (b), (d) controlling the quantitative rate of flow of the reactant noted in steps (a) and (b) by comparing the quantitative rate determined in step (c) with a predetermined set value, and when necessary, adjusting said quantitative rate of flow, (e) controlling the amount of dissolved gas contained in the reactant noted in steps (a) and (b) by comparing the high pressure density measurement with the low pressure density measurement noted in step (b), the low pressure density measurement serving as a gauge for the gas charge, and when necessary, adjusting said amount of dissolved gas, (f) feeding said flowable reactants to a mixing zone, and (g) mixing said reactants.
A method for the production of a solidforming of foam-forming flowable reaction mixture from at least two flowable components reacting with each other, which are fed continuously to a mixing zone and mixed together, wherein the volumetric rate of flow of at least one component is measured and its density determined, characterized in that the density of the component is measured by radiometry under high pressure and under low pressure in succession,
A device for preparing a favorable reaction mixture comprising storage containers for at least two reactive components, feed pipes which lead via metering pumps provided with regulators from the storage containers to a mixer head, a gas charging device and a volumetric flow counter arranged in at least one of the feed pipes between the storage container and mixer head, and a radiometric density measuring instrument arranged between the metering pump and mixer head through whose measuring length the feed pipe passes.
A method for the production of a flowable reaction mixture from at least two flowable reactants, at least one of said reactants containing dissolved gas, comprising
Dependencies are inferred from the claim text.