Method for producing polybutylene terephthalate

Details Method for producing polybutylene terephthalate Method for producing polybutylene terephthalate

1986-01-13

1987-04-07

Phynes, Lucille M.

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

Synthetic resins

From carboxylic acid or derivative thereof

528283, C08G 6304, C08G 6334

Patent

active

046562419

ABSTRACT:
A method for producing of a polybutylene terephthalate by reacting a dicarboxylic acid component containing terephthalic acid as a main constituent directly with a glycol component containing 1,4-butanediol as a main constituent to form an esterification reaction product and subjecting the esterification reaction product to a polycondensation reaction, characterized in that 0.4 to 1.3 mole of 1,4-butanediol per mole of terephthalic acid is added in the presence of an esterification catalyst which is at least one member selected from the group consisting of titanium compounds and tin compounds, to start said esterification reaction and thereafter a required amount of 1,4-butanediol is supplied additionally to complete the esterification reaction.

REFERENCES:
patent: 4223124 (1980-09-01), Broughton et al.
patent: 4329444 (1982-05-01), Borman
patent: 4499261 (1985-02-01), Heinze et al.

Affiliated with

Also associated with

Rating

Method for producing polybutylene terephthalate does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for producing polybutylene terephthalate, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for producing polybutylene terephthalate will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1087467