POLYCONDENSATION OF POLYESTER USING LITHIUM TITANYL OXALATE CATALYST

PURPOSE: A method for polycondensation of a polyester using a lithium titanyl oxalate catalyst is provided, to produce a polyester having excellent color-properties by a polycondensation reaction. CONSTITUTION: A polyester is prepared by a catalytic polycondensation of a polyester-forming reactant i...

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Bibliographic Details
Main Authors DIRKX RYAN R, CANNON KEVIN C, SESHADRI SRI RAM
Format Patent
LanguageEnglish
Korean
Published 25.06.2001
Edition7
Subjects
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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Summary:PURPOSE: A method for polycondensation of a polyester using a lithium titanyl oxalate catalyst is provided, to produce a polyester having excellent color-properties by a polycondensation reaction. CONSTITUTION: A polyester is prepared by a catalytic polycondensation of a polyester-forming reactant in the presence of a polycondensation catalyst. As the polycondensation catalyst, lithium titanyl oxalate is used. Preferably the catalyst is represented by M2TiO(C2O4)2(H2O)n, wherein M's are independent each another and are selected from the group consisting of K, Li, Na and Cs; and n is 0 or represents the amount of hydrated H2O. Optionally an antimony-containing catalyst is further used.
Bibliography:Application Number: KR20000058722