Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Method for isolating polyphenylene ether polymer resins from solution










Image Number 6 for United States Patent #6860966.

A method of removing substantially all solvent from a solution containing a polyphenylene ether polymer resin with little by-product formation (less than 250 ppm) is provided. The method employs a wiped thin film evaporator with a cylindrical heating chamber operating under conditions that satisfy the relationships defined by Equations I and II.Yields are maximized wherein values for feed rate (m) and percent solids (C) are selected to provide a maximum value for the output, Q, determined from the equation m*C=Q and the melt viscosity of the polyphenylene ether product is less than 50,000 centipoise at the operating temperature of the cylindrical heating chamber.








 
 
  Recently Added Patents
Methods and apparatus for address translation functions
Aircraft drive
Method and device for reducing image color noise
Managing deduplication density
Self-correcting amplifier system
Thermoforming sheet loading apparatus and method
Modular storage system
  Randomly Featured Patents
Electrical sensing element
Tuning system with provisions for skipping nonpreferred tuning positions
Film cartridge
Torque determination for control of an induction motor apparatus
Fast just-in-time (JIT) scheduler
Crossbar apparatus for a forwarding table memory in a router
Single layer planar HgCdTe photovoltaic infrared detector with heterostructure passivation and p-on-n homojunction
Chained registrations for mobile IP
Process for preparing fiber, rovings and mats from lyotropic liquid crystalline polymers
Process for fabricating non-encroaching planar insulating regions in integrated circuit structures