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| Number | Title | Issue Date |
| 7879969 | Crystallizer temperature control via fluid control A method of crystallizing a plurality of crystallizable polymer pellets includes a step in which the pellets are contacted with a temperature adjusting fluid in a crystallizer. The fluid adjusts the temperature of the pellets by having a temperature sufficient to al... | 02/01/2011 |
| 7868129 | Sloped tubular reactor with spaced sequential trays A sloped tubular reactor operable to facilitate a chemical reaction in a reaction medium flowing therethrough. The reactor can include a plurality of spaced apart internal trays disposed at different elevations in a downwardly sloping elongated tubular member. ... | 01/11/2011 |
| 7868130 | Multi-level tubular reactor with vertically spaced segments A multi-level tubular reactor operable to facilitate a chemical reaction in a reaction medium flowing therethrough. The tubular reactor can include a plurality of horizontally elongated and vertically spaced reactor segments coupled to and extending outwardly from a... | 01/11/2011 |
| 7842777 | Sloped tubular reactor with divided flow A sloped tubular reactor operable to facilitate a chemical reaction in a reaction medium flowing therethrough. The reactor can include a downwardly sloped tubular member, a flow divider disposed in the tubular member, and one or more internal trays disposed in the t... | 11/30/2010 |
| 7829656 | Solid phase polymerization catalyst system The invention is a method for making condensation polymers, such as polyethylene terephthalate polyester. The method includes introducing a catalyst system, which includes a coordination catalyst component and an acid component, to a polycondensation reaction. ... | 11/09/2010 |
| 7829655 | Heat-shrinkable polyester film and process for production thereof In the heat-shrinkable polyester film of the present invention, the main shrinkage direction is the longitudinal direction. In addition, the hot-water heat shrinkage ratios in the longitudinal direction and the width direction when the film is treated in hot water a... | 11/09/2010 |
| 7718759 | Polyester process using a pipe reactor The invention is directed to polyester processes that utilizes a pipe reactor in the esterification, polycondensation, or both esterification and polycondensation processes. Pipe reactor processes of the present invention have a multitude of advantages over prior ar... | 05/18/2010 |
| 7638593 | Crystallizer temperature control via fluid control A method of crystallizing a plurality of crystallizable polymer pellets includes a step in which the pellets are contacted with a temperature adjusting fluid in a crystallizer. The fluid adjusts the temperature of the pellets by having a temperature sufficient to al... | 12/29/2009 |
| 7531618 | Polyester process using a pipe reactor The invention is directed to polyester processes that utilizes a pipe reactor in the esterification, polycondensation, or both esterification and polycondensation processes. Pipe reactor processes of the present invention have a multitude of advantages over prior ar... | 05/12/2009 |
| 7501482 | Crystallizer temperature control via solid additive control A method of crystallizing polymeric pellets includes a step in which a plurality of polymeric pellets are introduced into a crystallizer. While within the crystallizer, the plurality of pellets is contacted with a plurality of solid additives for the purpose of adju... | 03/10/2009 |
| 7495067 | Polyester process using a pipe reactor The invention is directed to polyester processes that utilizes a pipe reactor in the esterification, polycondensation, or both esterification and polycondensation processes. Pipe reactor processes of the present invention have a multitude of advantages over prior ar... | 02/24/2009 |
| 7446162 | Polyester process using a pipe reactor The invention is directed to polyester processes that utilizes a pipe reactor in the esterification, polycondensation, or both esterification and polycondensation processes. Pipe reactor processes of the present invention have a multitude of advantages over prior ar... | 11/04/2008 |
| 7423109 | Polyester process using a pipe reactor The invention is directed to polyester processes that utilizes a pipe reactor in the esterification, polycondensation, or both esterification and polycondensation processes. Pipe reactor processes of the present invention have a multitude of advantages over prior ar... | 09/09/2008 |
| 7420026 | Polyester process using a pipe reactor The invention is directed to polyester processes that utilizes a pipe reactor in the esterification, polycondensation, or both esterification and polycondensation processes. Pipe reactor processes of the present invention have a multitude of advantages over prior ar... | 09/02/2008 |
| 7375154 | Polyester/polyamide blend having improved flavor retaining property and clarity This invention relates to a polyester/polyamide blend having an excellent gas barrier property. More particularly, the present invention relates to combinations of a polyethylene terephthalate polymer and a polyamide polymer having an excellent gas barrier property ... | 05/20/2008 |
| 7344765 | Heat-shrinkable polyester film and heat-shrinkable label A heat-shrinkable polyester film having a multi-layer structure of at least two layers, among which at least one layer is a layer containing a PET bottle-recycled material, wherein a heat shrinkage percentage in a maximum shrinkage direction of a 10 cm square sample... | 03/18/2008 |
| 7345139 | Polyester process using a pipe reactor The invention is directed to polyester processes that utilizes a pipe reactor in the esterification, polycondensation, or both esterification and polycondensation processes. Pipe reactor processes of the present invention have a multitude of advantages over prior ar... | 03/18/2008 |
| 7337074 | Method and apparatus for determining the mass of portioned units of active substances A method and the apparatus for determining the mass of portioned units of active substances, in particular capsules, tablets or dragees, involves leading the units of active substances through a microwave resonator and determining the mass from the displacement of t... | 02/26/2008 |
| 7332563 | Polyester based fiber and artificial hair using the same The object of the invention is to provide polyester-based fiber which maintains physical properties of usual polyester fiber, such as heat resistance, strength and elongation and is excellent in setting ability with controlled gloss of the fiber, artificial hair usi... | 02/19/2008 |
| 7323529 | Method of making copolymers containing olefinic type monomers Copolymers containing residues of at least one olefinic monomer and a method of making such copolymers including the steps of: (a) providing a pressurized stirred tank; (b) feeding monomer compositions to one or more stirred tank reactors, ... | 01/29/2008 |
| 7306835 | Thermo-shrinkable polyester film The present invention relates to a thermo-shrinkable polyester film with a superior thermal shrinkage, which has an orientation angle of a molecular chain in a range of from 0° to about ±10° relative to a main shrinkage direction, and a molecular orientation rati... | 12/11/2007 |
| 7271236 | Preparation method of polyester resin A preparation method of a polyester resin includes: under predetermined depolymerization conditions, mixing a polyester resin, a resin dissolvent and a polycondensation catalyst to depolymerize the polyester resin and form a first reaction mixture; adding a first mo... | 09/18/2007 |
| 7241854 | Thermoplastic polyurethanes Thermoplastic polyurethanes are obtainable by reacting (a) isocyanates with (b1) polyesterdiols having a melting point greater than 150° C., (b2) polyetherdiols and/or polyesterdiols, each having a melting point of less than 150° C. and a molecular weight of from ... | 07/10/2007 |
| 7211193 | Processes for the purification of bis(2-hydroxyethyl)terephthalate A method is disclosed for efficiently obtaining BHET of high purity from an EG (ethylene glycol) solution containing crude BHET (bis(2-hydroxyethyl)terephthalate), especially a decomposition product solution obtained by decomposing a polyester containing PET (polyet... | 05/01/2007 |
| 7138481 | Process for producing polyester resin A polyester resin prepared by polycondensing a dicarboxylic acid component containing terephthalic acid or derivative thereof with a diol component containing ethylene glycol through esterification or transesterification, thereby producing a melt polymerization poly... | 11/21/2006 |
| 7132484 | Continuous process for producing poly (trimethylene terephthalate) A continuous process for the production of poly(trimethylene terephthalate) is disclosed. According to the process, a liquid feed mixture comprising bis-3-hydroxypropyl terephthalate and/or low molecular weight polyesters of 1,3-propanediol and terephthalic acid, th... | 11/07/2006 |
| 7128968 | Biaxially oriented polyester film which is matt on one side, process for its production and its use Biaxially oriented polyester films which have at least one polyester-containing base layer (B) and at least one matt overlayer (A), the overlayer (A) comprising particles, preferably SiO2, which have a median diameter of from 2 to 10 μm and have a SPAN98... | 10/31/2006 |
| H2169 | Method of manufacturing partially crystalline polyester articles A method of making a polyethylene terephthalate/polyolefin blend for sheeting and thermoformed articles which has improved color stability and can be recycled many times. A heat stabilizer is melt blended only with the polyolefin prior to its incorporation into the ... | 09/05/2006 |
| 7014970 | Resin composition A resin composition having a softening point of from 80° to 165° C., obtained by reacting a poly C2-4 alkylene terephthalate having a melting point of 200° C. or more with a low-molecular weight polyester having a number-average molecular weight of fro... | 03/21/2006 |
| 7015267 | Polyethylene terephthalate compositions A method for increasing the crystallization rate of a polyethylene terepthalate (PET) prepared based on terepthalic acid (TPA) and ethylene glycol monomers, by adding into said TPA-based PET an effective amount of a polyethylene terepthalate prepared based on dimeth... | 03/21/2006 |
| 6984430 | Polyester film for release film An object of the present invention is provide a polyester film useful as base for release film according to which when a ceramic slurry is applied on the release film, formation of pinholes in the ceramic slurry layer is suppressed prominently, and also when a ceram... | 01/10/2006 |
| 6951954 | Continuous process for producing bis(3-hydroxypropyl) terephthalate A process for the continuous production of at least one of bis(3-hydroxypropyl) terephthalate and low molecular weight oligomers of 1,3-propanediol and terephthalic acid is disclosed. According to the process, preheated 1,3-propanediol (about 150° C. to about 200°... | 10/04/2005 |
| 6913817 | Biaxially oriented polyester film which is matt on one side and has characteristic shrinkage properties, process for its preparation and its uses Biaxially oriented polyester films which have a polyester-containing base layer (B) and a matt overlayer (A), and are characterized by the following features: a) the transverse shrinkage of the film is between 1 and 2.3%, b) the transverse linear expansion of the fi... | 07/05/2005 |
| 6906164 | Polyester process using a pipe reactor The invention is directed to polyester processes that utilizes a pipe reactor in the esterification, polycondensation, or both esterification and polycondensation processes. Pipe reactor processes of the present invention have a multitude of advantages over prior ar... | 06/14/2005 |
| 6905774 | Biaxially-oriented polyester film for fabrication and method of producing the same Biaxially-drawn polyester film for fabrication which is characterized in that it is a film comprising polyester in which ethylene terephthalate units and/or ethylene naphthalate units are the chief structural component, and the melting point of said film is 180-270Â... | 06/14/2005 |
| 6902819 | Biaxially oriented polyester film The biaxially oriented polyester film of the present invention useful for twist wrapping is prepared by biaxially drawing a polyester sheet which has a glass transition temperature (Tg) of at least 60° C., in the longitudinal and transverse directions, wherein the ... | 06/07/2005 |
| 6902803 | Dimensionally stable yarns An undrawn yarn is produced at increased quench delay and increased take-up speed to achieve improved ultimate elongation at a given crystallinity. Particularly preferred aspects include products comprising such yarns and methods for producing same. ... | 06/07/2005 |
| 6902802 | Low temperature heat-sealable polyester film and method for producing the same The present invention provides a heat-sealable polyester composition having an amorphous processing window ranging from a Tg in the range of about 40° C. to about 70° C., to a Tcg in the range of about 70° C. to about 150° C. The composition preferably contains ... | 06/07/2005 |
| 6893706 | White, biaxially-oriented polyester film with cycloolefin copolymer (COC), which is matt on at least one side, method for production and use thereof The invention relates to a white, biaxially-oriented and coextruded polyester film which is matt on at least one side with at least one base layer B, which contains a cycloolefin copolymer (COC) in amounts of 4 to 60 wt. %, based on the weight of the base layer, in ... | 05/17/2005 |
| 6884558 | Resin composition A resin composition having a softening point of from 80° to 165° C., obtained by reacting a poly C2-4 alkylene terephthalate having a melting point of 200° C. or more with a low-molecular weight polyester having a number-average molecular weight of fro... | 04/26/2005 |
