Catalyst and method for its production and use
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United States of America Patent
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Jul 9, 2002
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N/A
app pub date -
Feb 25, 2000
filing date -
Feb 27, 1999
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Abstract
The production of linear polyester by the interchange of ester radicals or esterification and polycondensation of multivalent alcohols with multivalent carboxylic acids takes place by means of catalysts. In order that the catalyst features the lowest possible content of catalytically active metal compound, the carrier substance that forms the heterogeneous phase comprises particles of the finest grain and of porous structure and features a surface of great inner, reactive and/or coordinated centers, whereby a catalytically active metal compound is adsorbed in the pores.
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