Patent ID: 11925912
Assignee: FUJIFILM ELECTRONIC MATERIALS U.S.A., INC.
Field: Chemical engineering (Chemistry)
Classification: CPC B  C | IPC B  C

Claim 0:
1. A system, comprising:
a plurality of material tanks, each material tank comprising at least one material for forming a chemical composition and the chemical composition being a polishing composition prepared from components comprising a diluent, an acid, a base, and abrasive particles, each material tank comprising a first recirculation loop in fluid communication with a respective material tank, and the first recirculation loop is configured to recirculate a respective at least one material back to the respective material tank;
at least one mixing tank in which the materials from the material tanks are mixed to form the chemical composition, wherein the mixing tank is in fluid communication with the plurality of material tanks, the mixing tank is configured to continuously receive the materials from the material tanks and to continuously deliver the chemical composition downstream, the mixing tank has a volume of from about 10 liters to about 1500 liters, the mixing tank comprises a second recirculation loop in fluid communication with the mixing tank, and the second recirculation loop is configured to recirculate the chemical composition back to the mixing tank;
a plurality of fluid flow controller units, each respective fluid flow controller unit configured to adjust a flow rate of the respective at least one material from the respective material tank to the at least one mixing tank, wherein the flow rate is configured to provide a continuous flow of the respective at least one material and the chemical composition through the system;
at least one holding tank downstream from the mixing tank and in fluid communication with the mixing tank, wherein the holding tank is configured to continuously receive the chemical composition from the mixing tank, the holding tank comprises a third recirculation loop in fluid communication with the holding tank, and the third recirculation loop is configured to recirculate the chemical composition back to the holding tank;
optionally, at least one flow controller unit between the at least one mixing tank and the at least one holding tank, wherein the flow controller unit is configured to facilitate continuous transfer of the chemical composition between the at least one mixing tank and the at least one holding tank;
optionally, at least one filter apparatus in fluid communication with the mixing tank or the holding tank, the filter apparatus being configured to receive and filter the chemical composition; and
a packaging station downstream of the holding tank or the optional filter apparatus, the packaging station being configured to receive the chemical composition and package the chemical composition into a product;
wherein the system is configured to form material and chemical composition flows in an in-process steady state.