Polymer dissolving method and apparatus
Patent 5857773 Issued on January 12, 1999. Estimated Expiration Date: 
May 7, 2017. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
May 7, 2017. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3298669 Mixing device Metering and wetting system Process for improving the filterability of viscoses Wetting chamber Mixing apparatus Method of rapidly dissolving polymer gels in water Device and method for dispensing a substance in a liquid Patent #: 5171090 InventorAssigneeApplicationNo. 836216 filed on 05/07/1997US Classes:366/178.1, Concentric366/163.2By venturi or jet pump type deviceExaminersPrimary: Soohoo, Tony G.Attorney, Agent or FirmForeign Patent References
International ClassB01F 015/02Foreign Application Priority Data1994-11-15 FIAbstractThe invention relates to a polymer dissolving method and apparatus, which method is entirely or partly based on a pressurized method, in which mixing is carried out in a dissolving head (3) by means of mechanical or static mixers (7, 11, 12). At the end of the process there are pressure chambers (9, 10) wherein pressure is maintained by means of a feed pump (8) and a valve (25). The process is entirely or partially pressurized.Field of SearchBY INJECTING GAS INTO MIXING CHAMBERWith stirrer JET OR SPRAY IMPINGING FREE-FALLING STREAM Plural related feeders having separate outlets to mixing chamber Concentric Inner feeder passes through wall of outer feeder and extends along common axis at the wall By suction By venturi or jet pump type device Pump forces material through restriction (e.g., static emulsifier) By suction or compressed air STATIONARY MIXING CHAMBER Including internal mixing or stirring means POLYMER DISSOLVER Contacting with water Atomizer type | |
