Process and apparatus for producing high molecular weight...

Details Process and apparatus for producing high molecular weight... Process and apparatus for producing high molecular weight...

C - Chemistry, Metallurgy

08

G

402/206

C08G 63/78 (2006.01) B01D 3/00 (2006.01) B01J 3/00 (2006.01)

Patent

CA 1276375

ABSTRACT PROCESS AND APPARATUS FOR PRODUCING HIGH MOLECULAR WEIGHT POLYESTER A process and an apparatus for the production of high molecular weight linear polyester is proposed, in which a pumpable material is produced in particular from terephthalic acid and an alkaline diol which is esterified in a two or multi-stage reactor arrangement and is subsequently condensed in vacuo in at least one vacuum reactor. The waste heat of the esterification reactor arrangement is used for producing the vacuum in the vacuum reactors. The water for condensing the steam is also obtained from the process steam. (Fig 2)

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