PRODUCTION OF POLYESTER FOR HOLLOW MATERIAL

Title:

PRODUCTION OF POLYESTER FOR HOLLOW MATERIAL

Document Type and Number:

Japanese Patent JPS5989324

Kind Code:

A

Abstract:

PURPOSE: To obtain the titled polymer having improved transparency, generating slightly white powder, by carrying out ester exchange reaction in the presence of a specific catalyst under specified pressure conditions, performing polycondensation reaction in the presence of a Ge compound.

CONSTITUTION: First, (A) a lower alkyl ester of a bifunctional carboxylic acid consisting essentially of terephthalic acid and (B) a glycol consisting essentially of ethylene glycol are subjected to ester exchange reaction in the presence of (C) an organotitanium carboxylate (e.g., titanium acetate, etc.) in an amount corresponding to 1W20 millimole % quantity based on the component A at 1.5W3 atmospheric pressure. The ester exchange product is subjected to polycondensation in the presence of (D) 10W50wt% Ge compound (preferably germanium oxid, etc.) based on the component A, to give the desired polymer.

More Like This:

JPS5942689

[Title of the Invention] A continuous production method of a low polymer [ polyester ]

Inventors:

HASHIMOTO SATOSHI
ASANO TAKAMASA
KURATSUJI TAKATOSHI
OKUMURA NORIYA

Application Number:

JP19775082A

Publication Date:

May 23, 1984

Filing Date:

November 12, 1982

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