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
Cycloalkylamine substituted isoquinoline derivatives
Device, system, and method for logging near field communications tag interactions
Media identification system with fingerprint database balanced according to search loads
Ink, ink jet recording method, ink cartridge, and ink jet recording apparatus
Method and system for physical verification using network segment current
Polyureas made from aminocrotonates and enaminones
Apparatus for merging spatial audio streams
  Randomly Featured Patents
Semiconductor chip assembly with post/base heat spreader and multilevel conductive trace
Method for the performance testing of echo cancellers using an artificial segmented test signal
Blade system for a scraped surface heat exchanger
Temperature detector
MOSFET with integrated field effect rectifier
Ink vessel-containing stamp pad
Method of connecting electric leads to battery tabs
Ceramic tile cutter
Tubular sheath protective insert