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AssigneeEastman Chemical Company
InventorsMary Jernigan, Michael Ekart, Richard Bonner
Estimating the term…
A melt phase process for making a polyester polymer melt phase product by adding an antimony containing catalyst to the melt phase, polycondensing the melt containing said catalyst in the melt phase until the It.V. of the melt reaches at least 0.75 dL/g. Polyester polymer melt phase pellets containing antimony residues and having an It.V. of at least 0.75 dL/g are obtained without solid state polymerization. The polyester polymer pellets containing antimony residues and having an It.V. of at least 0.70 dL/g obtained without increasing the molecular weight of the melt phase product by solid state polymerization are fed to an extruder, melted to produce a molten polyester polymer, and extruded through a die to form shaped articles. The melt phase products and articles made thereby have low b* color and/or high L* brightness, and the reaction time to make the melt phase products is short.
A melt phase process for making a polyester polymer melt phase product containing at least 100 ppm antimony based on the weight of the product comprising adding an antimony containing catalyst to the melt phase;
A polyester polymer composition comprising a melt phase product made in the melt phase to an It.V. of at least 0.70 dL/g, a bluing toner or residue thereof and/or a red toner or residue thereof, and a reheat additive, wherein the composition has a b* color between −5 to +5 and a L* brightness value of 70 or more.
A process for making a polyester polymer melt phase product comprising:
A process for making a polyester polymer melt phase product containing an organic bluing toner comprising adding at least one catalyst compound comprising an antimony containing catalyst to a melt and polymerizing the melt in the presence of said antimony containing catalyst to produce a melt phase polyester polymer having an It.V. of at least 0.75 dL/g, a b* color of −5 to +5, and an L* brightness of at least 70.
A polyester polymer composition containing antimony residues and substantially free of titanium residues comprising a polyester polymer having a b* color of −5 to +5, and L* of at least 70 CIELAB units, and an It.V. of at least 0.75 dL/g obtained without subjecting the polymer to an increase in its molecular weight through solid state polymerization.
A process for making a polyester polymer comprising polycondensing a melt in the presence of an antimony-containing catalyst to produce a melt phase product, wherein the reaction time of the melt between an It.V. of 0.45 dL/g to and It.V. ranging from 0.70 dL/g to 0.90 dL/g is 100 minutes or less.
A polyester polymer melt phase product having a degree of crystallinity of at least 25% and an It.V. of at least 0.70 dL/g without solid state polymerizing the polymer, said product comprising antimony residues and having a b* color of −5 to +5 and an L* of at least 70.
A melt phase process for making a polyester polymer melt phase product comprising adding an antimony containing catalyst to the melt phase, polycondensing a melt containing said catalyst in the melt phase until the It.V. of the melt reaches at least 0.75 dL/g.
Polyester polymer melt phase pellets having an It.V. of at least 0.75 dL/g obtained without solid state polymerization and containing antimony residues.
A process comprising feeding to an extruder a polyester polymer composition comprising a melt phase product containing antimony residues and having an It.V. of at least 0.70 dL/g obtained without increasing the molecular weight of the melt phase product by solid state polymerization, melting the polyester polymer composition to produce a molten polyester polymer, extruding the molten polyester polymer composition through a die to form shaped articles.
A process for making polyester polymer articles comprising:
Dependencies are inferred from the claim text.