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
Selecting content for storage in a multi-device cache
Wake-up radio system
Managing aging of silicon in an integrated circuit device
Adaptive block pre-fetching method and system
Methods and apparatus for map detection with reduced complexity
Systems and methods for managing and utilizing excess corn residue
  Randomly Featured Patents
Method of producing accurately scaled, well-defined surfaces of work pieces from carbonaceous cast iron with tribologic properties
Method and apparatus for sending or receiving a secure fax
Apparatus for forming perforated tubes
Circulating rack
Powder magnetic core and method for manufacturing the same
Apparatus for facilitating respiratory rhythm control
Call processing system with call screening
Direction regulator of display
Iodopropargyl pyridyl and picolinyl ethers and thioethers as paint fungicides
MIS device, method of manufacturing the same, and method of diagnosing the same