Process for continuous production of oxymethylene polymers

Details Process for continuous production of oxymethylene polymers Process for continuous production of oxymethylene polymers

1977-11-29

1978-09-19

Phynes, Lucille M.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymerizing in two or more physically distinct zones

528249, 528250, C08G 210

Patent

active

041153693

ABSTRACT:
A process for continuously producing an oxymethylene polymer by continuously polymerizing a starting monomer containing at least 50 mole% of trioxane in bulk in the presence of a catalyst, which comprises feeding the starting monomer into a first-stage polymerization reactor having a self-cleaning action to perform a first-stage polymerization reaction until the conversion reaches 40 to 70%, withdrawing the reaction mixture as a powder from the outlet of the first-stage polymerization reactor, feeding the reaction mixture into a second-stage polymerization reactor having a stirring action to perform a second-stage polymerization reaction until the conversion reaches 95 to 100%, and then withdrawing the polymerization product as a powder from the outlet of the second-stage polymerization reactor.

REFERENCES:
patent: 3254053 (1966-05-01), Fisher
patent: 3442866 (1969-05-01), Seddon et al.

Affiliated with

Also associated with

Rating

Process for continuous production of oxymethylene polymers 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 continuous production of oxymethylene polymers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for continuous production of oxymethylene polymers will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2118527