Clariant Plastics & Coatings Ltd

Clariant International Ltd

Clariant Finance (bvi) Limited

Ernesto Dongiovanni

Pascal Steffanut

Mohamed Sidqi

Jerome Abrahmi

Korada Supat

Christoph Kroehnke

Warangkana Saisuwan

A catalyst composition for a polyester manufacturing process, comprising a titanium catalyst and/or an antimony catalyst as main catalyst, and either (i) at least one co-catalyst A, or (ii) at least one co-catalyst B and at least one co-catalyst C, or (iii) a combination thereof, and wherein co-catalyst A is selected from the group consisting of a metal salt of an alkyl or an aryl phosphinic acid, or a metal salt of an alkyl or aryl diphosphinic acid, or a combination thereof, and co-catalyst B is selected from the group consisting of an alkyl or aryl phosphinic acid, an alkyl or aryl diphosphinic acid a combination thereof, and co-catalyst C selected from the group of a metal salt, a metal hydroxide or a metal organyl compound.

Catalyst composition for a polyester manufacturing process

The present invention relates to the use of an additive composition for the preparation of polycondensation polymers wherein the additive combination is present in the polycondensation reaction and wherein the additive combination comprises one or more compounds of the formula (A) wherein R, R, R, R, R, R, R, and Rare independently selected from the group consisting of methyl, ethyl, propyl, isopropyl, butyl, isobutyl, tert.-butyl, linear or branched pentyl, linear or branched hexyl, linear or branched heptyl, linear or branched octyl or linear and branched nonyl groups, and Rand Rare independently selected from the group consisting of hydrogen, methyl, O(C-C-Acyl) and O&#x2014;R, wherein Ris selected from the group consisting of methyl, ethyl, propyl, isopropyl, butyl, isobutyl, tert.-butyl linear or branched pentyl, linear or branched hexyl, linear or branched heptyl, linear or branched octyl or linear and branched nonyl groups, and one or more sterically hindered organic phosphorous(lll) compounds selected from the group consisting of sterically hindered phenyl phosphonites and sterically hindered phosphites. 

Use of an additive composition for the preparation of polycondensation polymers

The invention relates to a process for producing a polyester resin, said process comprises the steps of and optionally a colour correction additive containing cobalt ions;

Process for manufacturing polyethylene terephthalate

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Horbourg-Wihr, France

Ernesto Dongiovanni