Process for preparation of polyester polyols utilizing polyalkyl

Details Process for preparation of polyester polyols utilizing polyalkyl Process for preparation of polyester polyols utilizing polyalkyl

1984-08-17

1985-10-08

Phynes, Lucille M.

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

Synthetic resins

From carboxylic acid or derivative thereof

521172, 521174, 528274, 528480, 528501, C08G 6302

Patent

active

045461694

ABSTRACT:
The process of the present invention reacts a polyhydric alcohol and a second reactant selected from the group consisting of polycarboxylic acid, anhydride or an ester of a polycarboxylic acid in a first reactor to produce a flowable intermediate ester. During this reaction, volatile by-product is removed. The flowable intermediate ester is transferred to a holding vessel from which it is metered to a second reactor. Additional polyhydric alcohol may be added to the flowable intermediate ester which may be preheated by heat exchange with the finished polyester before introduction to the second reactor. A polyalkylene terephthalate feed is introduced to the second reactor in which it is reacted to form a finished polyester which is continuously removed from the second reactor. By altering the feeds to the second reactor, the physical characteristics of the finished polyester may be changed to meet various specifications.

REFERENCES:
patent: 4230818 (1980-10-01), Broughton et al.
patent: 4307224 (1981-12-01), Rogier
patent: 4379912 (1983-04-01), Lu
patent: 4499261 (1985-02-01), Heinze et al.

Affiliated with

Also associated with

Rating

Process for preparation of polyester polyols utilizing polyalkyl 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 preparation of polyester polyols utilizing polyalkyl, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for preparation of polyester polyols utilizing polyalkyl will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2220860