# US 11,439,965 B2 · Method for producing coating medium compositions by means of gravimetric metering with mixing and adaptation of the height of the stirring element to the level > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,439,965 B2 - Document ID: US11439965B2 - Status: Granted - Kind: B2 - Application number: 16/982,978 - Filed: 2019-03-22 - Published: 2021-09-30 - Granted: 2022-09-13 - Earliest claimed: 2018-03-22 - Assignees: BASF Coatings GmbH - Applicants: BASF Coatings GmbH - Inventors: Alexander Blaser - Web page: https://patentgrep.com/patent/US11439965B2 ## CPC - B01F 35/2117: {Weight} - B01F 27/2312: {the position of the rotating shaft being adjustable in the interior of the receptacle, e.g. to locate the stirrer in different locations during the mixing} - B01F 35/2112: {Level of material in a container or the position or shape of the upper surface of the material} - B01F 35/2206: {Use of stored recipes for controlling the computer programs, e.g. for manipulation, handling, production or composition in mixing plants (B01F33/846 takes precedence)} - B01F 35/221422: {Speed of rotation of the mixing axis, stirrer or receptacle during the operation} - B01F 35/881: {by weighing, e.g. with automatic discharge} - B29B 7/244: {of several materials} - B29B 7/286: {measuring properties of the mixture, e.g. temperature, density (B29B7/283 takes precedence)} - B01F 2101/30: Mixing paints or paint ingredients, e.g. pigments, dyes, colours, lacquers or enamel - B01F: MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING (mixing paints B44D3/06) - B29B: PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS ## Abstract The present disclosure relates to a method for preparing a coating material composition or a precursor thereof, the method including at least step (1), weighing out all required components into a suitable container by means of at least one metering valve when using a gravimetric metering system, the components that are weighed out into the container being mixed by means of at least one stirring body throughout step (1) and a continuous adaptation of the position of the at least one stirring body to the respective filling level within the container taking place throughout step (1), the respective filling level being predetermined by the amount and number of components that are weighed out into the container and the position of the at least one stirring body corresponding to the height of the stirring body within the container, calculated from the bottom of the container. ## Claims ### Claim 1 A method for preparing a coating material composition or a precursor thereof that can be used in an automobile industry, the method comprising: (1) weighing out all required components for preparing the coating material composition or the precursor thereof into a container suitable for weighing them out by means of at least one metering valve of a gravimetric metering system, wherein the required components are mixed by means of at least one stirring body throughout step (1) and a continuous adaptation of a position of the at least one stirring body to a respective filling level within the container takes place throughout step (1), the respective filling level being predetermined by an amount and number of the required components that are weighed out into the container and the position of the at least one stirring body corresponding to a height of the at least one stirring body within the container, calculated from a bottom of the container. ### Claim 2 (depends on 1) The method according to claim 1, wherein the continuous adaptation of the position of the at least one stirring body to the respective filling level within the container is performed in an automated manner. ### Claim 3 (depends on 2) The method according to claim 2, wherein the automation is performed by means of software support. ### Claim 4 (depends on 1) The method according to claim 1, wherein a weight of the container and the required components already weighed out into the container is determined at all times during step (1). ### Claim 5 (depends on 1) The method according to claim 1, wherein the container has an empty weight that is determined before carrying out step (1), and is therefore known. ### Claim 6 (depends on 1) The method according to claim 1, wherein the continuous adaptation of the position of the at least one stirring body to the respective filling level within the container takes place by a respective weight of the required components that have already been weighed out into the container being determined at all times throughout step (1) and, with knowledge of a geometry of an interior space of the container, converted into the filling level within the container at every time. ### Claim 7 (depends on 1) The method according to claim 1, wherein the continuous adaptation of the position of the at least one stirring body to the respective filling level within the container takes place by (i) a respective weight of the container and the required components already weighed out into the container being determined at all times throughout step (1), (ii) the weight of step (i) minus a known empty weight of the container being converted into a volume of the required components in the container and (iii) with knowledge of a geometry of an interior space of the container the volume of step (ii) in turn being converted into the filling level within the container at every time. ### Claim 8 (depends on 1) The method according to claim 1, wherein the at least one stirring body is positioned completely below the filling level throughout step (1). ### Claim 9 (depends on 1) The method according to claim 1, wherein the at least one stirring body is part of a stirring mechanism, which can be activated by a motor. ### Claim 10 (depends on 1) The method according to claim 1, wherein the at least one stirring body is attached to a stirring shaft. ### Claim 11 (depends on 10) The method according to claim 10, wherein the stirring shaft is adjustable in height. ### Claim 12 (depends on 1) The method according to claim 1, wherein the weighing out according to step (1) is performed on a basis of a formula of a target formulation, which is created electronically within a database or retrieved from an existing database and corresponds to the coating material composition or the precursor thereof that is to be prepared. ### Claim 13 (depends on 1) The method according to claim 1, wherein an outer side of the container comprises an electronically readable label, which contains information of an empty weight of the container and/or items of information concerning a geometry of an interior space of the container and/or a volume of the interior space of the container. ### Claim 14 (depends on 1) The method according to claim 1, wherein step (1) is carried out at a constant rotational speed and/or circumferential speed. ### Claim 15 (depends on 1) The method according to claim 1, wherein the method is a method for preparing a water-based paint.