Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
Patent
1996-02-01
1997-01-14
Mosley, Terressa
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From carboxylic acid or derivative thereof
528176, 528192, 528193, 528194, 528271, C08G 6302
Patent
active
055940927
ABSTRACT:
This invention is an improved process for producing polyester copolymers, which employs a combination of an acid-based process and an ester-based process. The ester-based process is used to manufacture a low molecular weight naphthalate-based polymer, and the acid-based process is used to manufacture phthalate-based oligomers. The low molecular weight naphthalate-based polymer is combined with the phthalate-based oligomers, or the raw materials used to form the phthalate-based oligomers, to form a random polyester copolymer. Specifically, the process of the invention may be employed to manufacture, in an ester-based process, a low molecular weight polyethylene naphthalate polymer, which is then combined with polyethylene terephthalate oligomers produced in an acid-based process, and the acid-based process is then used to continue the polymerization reaction. Ester interchange reactions and further polymerization result in the production of a random polyethylene terephthalate
aphthalate copolymer.
REFERENCES:
patent: 4079046 (1978-03-01), Brignac et al.
patent: 4447595 (1984-05-01), Smith et al.
patent: 5101008 (1992-03-01), Cooke et al.
Burkett Eugene J.
Callander Douglas D.
Galko Joseph
Sisson Edwin A.
Mosley Terressa
Muller Kim
Shell Oil Company
LandOfFree
Process for manufacturing polyester copolymers 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 manufacturing polyester copolymers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for manufacturing polyester copolymers will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1389070