Patent
Process for removing metallic antimony from polyester prepolymers
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The article was published on 1969-06-02. It has received 14 citations till now. The article focuses on the topics: Antimony & Polyester.read more
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Patent
Method of post-polymerization stabilization of high activity catalysts in continuous polyethylene terephthalate production
TL;DR: In this paper, a stabilizer is added at or after the end of the polymerization reaction prior to polymer processing to deactivate the polymerisation catalyst and can increase the throughput of polyester without adversely affecting the thermal stability of the polyethylene terephthalate polyester.
Patent
Stabilization of low molecular weight of polybutylene terephthalate/polyester blends with phosphorus compounds
TL;DR: Blends of low molecular weight PBT resin and high molecular weight polyester resin, such as high molecular-weight PBT resins, are imparted with excellent melt viscosity stability by the addition of certain phosphorus-containing compounds as mentioned in this paper.
Patent
Method for adjusting reheat properties of polyester resins
TL;DR: In this article, a method for adjusting the reheat properties of polyester resins containing finely divided particles of antimony as IR-absorbant over a wide range without having to materially change the resin composition by contacting the polyester resin in the solid state in the presence of a heated inert gas with an amount of oxygen.
Patent
Continuous process for solid phase polymerisation of polyesters
TL;DR: In this article, a solid phase continuous polymerization of polyester granules is described, in order to achieve a molecular weight increase, measurable by the intrinsic viscosity IV increase of the polyester, wherein the use of at least a reactor (15) is provided, being cylindrical, rotary around its own central axis.
Patent
High intrinsic viscosity melt phase polyester polymers with acceptable acetaldehyde generation rates
TL;DR: In this paper, a method for the production of solid polyester polymer particles comprising: a) polycondensing a molten polyester poly composition in the presence of a polycondensation catalyst composition comprising antimony species; b) continuing the polyconditioning of the polymer composition to an It.V. of 0.68 dL/g or more, adding a catalyst stabilizer or deactivator to the polymer melt; and c) after reaching an ItV.V of 0.,
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