Process for preparing polyethylene naphthalate based polymers

Details Process for preparing polyethylene naphthalate based polymers Process for preparing polyethylene naphthalate based polymers

1999-09-14

2000-03-21

Acquah, Samuel A.

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

Synthetic resins

From carboxylic acid or derivative thereof

528185, 528277, 528281, 528283, 528285, 528286, 528298, 528302, 528308, 5283086, C08G 6378, C08G 6302

Patent

active

060404175

ABSTRACT:
A process for preparing polyethylene naphthalate polymer by using a composite catalyst. The process comprises the steps of esterifying a dicarboxylic acid containing 2,6-NDCA, a dicarboxylic ester containing 2,6-NDC or derivatives thereof, with ethylene glycol or a glycol containing ethylene glycol to produce esterification polymers containing bis(beta-hydroxyethyl)naphthalate; continuously polycondensing the obtained esterification polymers to prepare a polymers of polyethylene naphthalate; and wherein the process includes using a composite polymerization catalyst, said composite polymerization catalyst comprising a titanium compound, a phosphorous compound and optionally an antimony compound. The process can considerably reduce both the esterification time and the polycondensation time and provides a good color and excellent physical characteristics.

REFERENCES:
patent: 5286836 (1994-02-01), Park et al.
patent: 5714570 (1998-02-01), Kim et al.

Affiliated with

Also associated with

Rating

Process for preparing polyethylene naphthalate based 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 preparing polyethylene naphthalate based polymers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for preparing polyethylene naphthalate based polymers will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-731308