Prepn process of multicomponent copolymerized and modified PETG polyester

The present invention relates to chemical product, and is especially the preparation process of modified multicomponent copolymerized PETG polyester. The preparation process includes: A. compounding material with PTA, IPA, NPG, MEG and metal catalyst in certain molar proportion; B. esterification at...

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Bibliographische Detailangaben
1. Verfasser:	SHENGPING,YAO TANG
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	The present invention relates to chemical product, and is especially the preparation process of modified multicomponent copolymerized PETG polyester. The preparation process includes: A. compounding material with PTA, IPA, NPG, MEG and metal catalyst in certain molar proportion; B. esterification at 210-260 deg.c temperature and 0.01-0.25 MPa pressure for 180-260 min; and C. condensation at 275-285 deg.c temperature and 0.098-0.1 MPa vacuum degree for 180-200 min. The present invention prepares polymer without crystallizing tendency with four kinds of monomer and through esterification and condensation, and the product has high transparency, high shrinkage, good hot sealing performance and high adaptability.