Catalyst composition for production of polybutylene terephthalat

Details Catalyst composition for production of polybutylene terephthalat Catalyst composition for production of polybutylene terephthalat

1997-08-20

1999-05-04

Mosley, Terressa

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

Synthetic resins

From carboxylic acid or derivative thereof

C08G 6400

Patent

active

059004746

ABSTRACT:
The invention relates to a process of producing polybutylene terephthalate by direct esterification and then melt polycondensation, characterized in that a specific catalyst composition is used, said catalyst composition comprising an organotitanium compound as primary catalyst in an amount of 0.01 to 1.0% by weight of terephthalic acid; and an alkaline metal salt of borate, pyroborate or metaborate as secondary catalyst in an amount of 0.001 to 1.0% by weight of terephthalic acid. By using said catalyt composition, amount of THF by-product generated can be reduced more than 30%, and the reaction rate of esterification can be increased over 20%.
(FIG. 2)

REFERENCES:
patent: 4107149 (1978-08-01), Bier et al.
patent: 4136089 (1979-01-01), Bier et al.

Affiliated with

Also associated with

Rating

Catalyst composition for production of polybutylene terephthalat does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Catalyst composition for production of polybutylene terephthalat, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Catalyst composition for production of polybutylene terephthalat will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1869955