Process for preparation of high-molecular weight polyester

Details Process for preparation of high-molecular weight polyester Process for preparation of high-molecular weight polyester

1985-10-08

1986-10-28

Phynes, Lucille M.

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

Synthetic resins

From carboxylic acid or derivative thereof

525437, 525441, 525445, 525450, 528279, 528283, 528302, C08G 6304, C08G 6322

Patent

active

046199870

ABSTRACT:
A process for preparing a high-molecular weight polyester comprising additionally polymerizing a polyester obtained from a dicarboxylic acid component composed mainly of an aromatic dicarboxylic acid and/or an ester-forming derivative thereof and a glycol component composed mainly of ethylene glycol and/or an ester-forming derivative thereof and having an intrinsic viscosity of at least 0.8, at a temperature above the melting point of the polyester and under a reduced pressure, in the presence of a compound (A) successively generating a substance which is gaseous under the polymerization conditions and does not substantially reduce the molecular weight of the polyester, to form a polyester having an intrinsic viscosity of at least 1.0.

REFERENCES:
patent: 4143094 (1979-03-01), Burzin et al.
patent: 4379912 (1983-04-01), Lu
patent: 4454313 (1984-06-01), Okitsu et al.
patent: 4532319 (1985-07-01), Wendling

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1347306