Polyesters and their manufacture from acids and glycol carbonate

Details Polyesters and their manufacture from acids and glycol carbonate Polyesters and their manufacture from acids and glycol carbonate

1983-06-30

1985-06-04

Anderson, Harold D.

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

Synthetic resins

From carboxylic acid or derivative thereof

528308, 5283083, 528370, 560 84, C08G 6300

Patent

active

045215855

ABSTRACT:
Poly(ethylene terephthalate), poly(1,4-cyclohexanedicarboxylate), poly(ethylene isophthalate), poly(ethylene naphthalate), their copolymers with each other and with modifying aliphatic dicarboxylic acids, and substituted glycol repeat unit modifications thereof are produced from prepolymer (oligomer) obtained from the esterification of the acid or acids with ethylene carbonate or substituted ethylenecarbonate in the presence of one or more amines compounds selected from trialkylamines, tetraalkyldiamines, N-alkylated heterocyclic amines, and certain quaternary ammonium salts, employing certain mole ratios of ethylene carbonate and substituted ethylene carbonate to the diacid. The prepolymer is formed in an unusually short time and the final polyester of high I.V. exhibits improvement in such properties as desirable light color and low ether-glycol level.

REFERENCES:
patent: 3211702 (1965-10-01), Van Gijzen
patent: 3549692 (1970-12-01), Bockmann et al.
patent: 4266046 (1981-05-01), Wu
patent: 4347351 (1982-08-01), Swart

Affiliated with

Also associated with

Rating

Polyesters and their manufacture from acids and glycol carbonate does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Polyesters and their manufacture from acids and glycol carbonate, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polyesters and their manufacture from acids and glycol carbonate will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-829660