Method of producing polyester and charging apparatus therefor

Details Method of producing polyester and charging apparatus therefor Method of producing polyester and charging apparatus therefor

1999-06-03

2000-10-10

Acquah, Samuel A.

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

Synthetic resins

Process of treating scrap or waste product containing solid...

528272, 528298, 526 64, 526 66, 526 71, 526 88, 366101, 366102, 3661501, 366241, L08J 1104

Patent

active

061302627

ABSTRACT:
This invention provides a method of producing polyester and charging apparatus therefor capable of producing a high quality polyethylene naphthalate usable for photographic purpose from recovered polyethylene naphthalate which comprises subjecting an ester-forming derivative consisting essentially of naphthalene dicarboxylic acid or its lower alkyl ester and a diol compound consisting essentially of ethylene glycol to ester exchange reaction or esterification to produce polyethylene naphthalate, wherein recovered polyethylene naphthalate resin is charged before beginning of effusion of alcohol or water which is a by-product of the ester exchange reaction or esterification, and a charging apparatus comprising a slidable inner pipe capable of penetrating through a supply valve.

REFERENCES:
patent: 5169977 (1992-12-01), Tanaka et al.
patent: 5432203 (1995-07-01), DeBruin et al.
patent: 5621983 (1997-04-01), Lundemann et al.
patent: 5770764 (1998-06-01), Zeitlin et al.
patent: 6018086 (2000-01-01), Motoyuki et al.
patent: 6057487 (2000-05-01), Munson et al.

Affiliated with

Also associated with

Rating

Method of producing polyester and charging apparatus therefor 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 of producing polyester and charging apparatus therefor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of producing polyester and charging apparatus therefor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2257417