Resources Contact Us Home
Process and apparatus for continuous polycondensation

Image Number 3 for United States Patent #7431893.

An apparatus for continuously producing polyester comprises three single reactors, i.e. a single esterification reactor (first reactor), a single initial polymerization reactor (second reactor) and a single final polymerization reactor (third reactor or final polymerizer), where at least one of the first reactor and the second reactor is free from an external stirring power source, or the third reactor is a horizontal, one-shaft-type, low speed rotation type reactor. Necessary number of reactors for the esterification and polycondensation reactions can be a minimum and necessary stirring power consumption for the reaction can be a minimum, and thus polyester polymers of good quality can be efficiently produced at a minimum energy cost in a necessary minimum reactor structure.

  Recently Added Patents
Digital display
Method for reserving network bandwidth for versioned network services
Print control server, print controlling method, and print control program
Functional component compensation reconfiguration system and method
Dual gate electronic memory cell and device with dual gate electronic memory cells
Domestic soda-water preparing device
Presenting a link to a user
  Randomly Featured Patents
Clock and data recovery circuit
Current supply circuit arrangement
Theft alarm for portable articles
Contactless NOR-type memory array and its fabrication methods
Web dispenser
Braille support
System of document representation retrieval by successive iterated probability sampling
Efficient despread and respread of multi-rate CDMA signals
Semiconductor unit and method for manufacturing the same
Method for the preparation of tabular emulsion grains rich in chloride