Process for controlling a particle size of polyarylene...

C - Chemistry – Metallurgy – 08 – G

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C08G 75/02 (2006.01) C09D 5/44 (2006.01) C09D 181/02 (2006.01)

Patent

CA 2103004

A particle size of polyarylene sulfide obtained in polymerization is controlled by a process characterized in that a gaseous phase part of a reactor is cooled or heated after starting decreasing a temperature of a reaction system o an end of precipitation of polyarylene sulfide formed In an embodiment, a water content in the reaction system is 0.8 to 1.7 moles per mole of the alkali metal sulfide; the gaseous phase part of the reactor is cooled in a polymerization stage to thereby condense a part of a gaseous phase in the reactor and the condensed liquid is refluxed to a liquid phase in the reactor; and the gaseous phase part is only cooled after starting decreasing the temperature of the reaction system, whereby high molecular weight polyarylene sulfide suitable for powder coating is formed, which has a weight average molecular weight of at least 30,000 and an average particle size of 50 to 80 ~m, wherein particles of 40 to 150 ~m account for at least 90 % by weight of the whole particles in a particle size distribution, and the amount of particles of 180 ~m or more is 0.5 % by weight or less.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Process for controlling a particle size of polyarylene... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for controlling a particle size of polyarylene..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for controlling a particle size of polyarylene... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1542675

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.