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  4. Partikulaeres titanhaltiges Katalysatorsystem zur Herstellung hochmolekularer Polyester
 
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Patent
Title

Partikulaeres titanhaltiges Katalysatorsystem zur Herstellung hochmolekularer Polyester

Other Title
Catalyst especially for use in high-molecular polyester (e.g. polyethylene terephthalate) production consists of a nanoscalar inorganic oxide carrier and an absorbed titanium-containing compound.
Abstract
Die Erfindung betrifft ein Verfahren zur Herstellung von hochmolekularen, farblosen Polyestern der Terephthalsaeure, wie Polyethylen-, Polybutylen- oder Polytrimethylenterephtalat, bzw. der Naphthalindicarbonsaeure (Polyethylen-naphthenat) in Gegenwart partikulaerer titanbasierter Katalysatoren. Als Traegermaterialien fuer die Katalysatoren werden nanoskalige anorganische Partikel, wie pyrolytisch erzeugte Silizium- oder Aluminiumoxide eingesetzt, auf die die Katalysatoren aus Loesung aufgebracht werden.

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DE 10339742 A UPAB: 20050512 NOVELTY - A catalyst consists of a nanoscalar inorganic oxide carrier and an absorbed titanium-containing compound. USE - In the production of high-molecular polyesters from aliphatic or aromatic polycarboxylic acids and polyols, especially in combination with stabilizers or co-catalysts, the acid component being terephthalic acid and the polyol being an aliphatic or aromatic diol, especially ethylene glycol, 1,3-propanediol, or 1,4- butanediol (claimed). ADVANTAGE - Not only are high molecular weight polyesters for use in packaging, construction applications and technical fibers obtained but polyesters with improved properties for specific uses can also be obtained.
Inventor(s)
Walter, M.
Boerner, F.
Rafler, G.
Thiele, U.K.
Stibal, W.
Hagen, R.
Link to:
Espacenet
Patent Number
2003-10339742
Publication Date
2005
Language
German
Fraunhofer-Institut für Angewandte Polymerforschung IAP  
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