Patent application number | Description | Published |
20090035545 | POLYETHYLENE FILMS WITH IMPROVED BUBBLE STABILITY - This invention relates to high density polyethylene blown films having good barrier properties and improved processing characteristics. The method incorporates the use of peroxide which results in improved bubble stability without sacrifice in barrier properties. The polyethylenes have a density greater than about 0.950 g/cc, are relatively narrow in molecular weight distribution MWD (in the range of from about 2.0 to about 6.5), and are of medium molecular weight. In an embodiment, the films also have a rheological breadth parameter, a, that has been reduced by at least about 5%, but not more than 45%, by addition of a peroxide to the polyethylene. The addition of peroxide improves processability without sacrificing strength and barrier properties such as oxygen transmission rate. | 02-05-2009 |
20100081746 | Color Reduction in Polyethylene Modified by Radical Initiation - Polyethylene modified by using radical initiators such as oxygen and peroxides sometimes has a yellow color which may be reduced or eliminated by incorporating additives such as polyethylene glycol, and/or neutralizing species such as alkali metal stearates, particularly calcium stearate, and zinc oxide. | 04-01-2010 |
20100081767 | Articles Formed from Nucleated Polyethylene - Polymer articles and processes of forming the same are described herein. The processes generally include providing an ethylene based polymer, blending the ethylene based polymer with a modifier to form modified polyethylene and forming the modified polyethylene into a polymer article, wherein the polymer article exhibits a haze that is at least about 10% less than a polymer article prepared with a similarly modified polyethylene. | 04-01-2010 |
20100136310 | Polyethylene Fibers and Processes of Forming the Same - Fibers and methods of forming the fibers are described herein. The fibers generally include an ethylene based polymer exhibiting a molecular weight distribution of from about 2 to about 8. | 06-03-2010 |
20100160570 | Blown Films and Processes of Forming the Same - Blown films and processes of forming the same are described herein. The processes generally include providing a bimodal ethylene based polymer, blending the bimodal ethylene based polymer with at least about 30 ppm peroxide to form modified polyethylene and forming the modified polyethylene into a blown film. | 06-24-2010 |
20100210797 | Polyethylene Films having Improved Barrier Properties - Blown films and processes of forming the same are described herein. The blown films generally include high density polyethylene exhibiting a molecular weight distribution of from about 1.5 to about 8.0 and a density of from 0.94 g/cc to less than 0.96 g/cc. | 08-19-2010 |
20100267909 | Bimodal Pipe Resin and Products Made Therefrom - Disclosed is a bimodal Ziegler-Natta catalyzed polyethylene, having a density of from 0.930 g/cc to 0.960 g/cc, and a molecular weight distribution of from 10 to 25, wherein an article formed therefrom has a PENT of at least 1500. Also disclosed is a method of preparing a tubular article including obtaining a bimodal polyethylene having a density of from 0.930 g/cc to 0.960 g/cc and a molecular weight distribution of from 10 to 25, and processing the polyethylene under conditions where a specific energy input (SEI) is less than 300 kW·h/ton, and wherein the article has a PENT of at least 1500. Further disclosed is a method for controlling the degradation of polyethylene including polymerizing ethylene monomer, recovering polyethylene, extruding the polyethylene, and controlling the degradation of polyethylene by measuring the SEI to the extruder and adjusting throughput and/or gear suction pressure keep SEI less than 300 kW·h/ton, and forming an article. | 10-21-2010 |
20120091621 | BIMODAL PIPE RESIN AND PRODUCTS MADE THEREFROM - Disclosed is a bimodal Ziegler-Natta catalyzed polyethylene, having a density of from 0.930 glee to 0.960 glee, and a molecular weight distribution of from 10 to 25, wherein an article formed therefrom has a PENT of at least 1500. Also disclosed is a method of preparing a tubular article including obtaining a bimodal polyethylene having a density of from 0.930 glee to 0.960 Wee and a molecular weight distribution of from 10 to 25, and processing the polyethylene under conditions where a specific energy input (SET) is less than 300 kW.h/ton, and wherein the article has a PENT of at least 1500. Further disclosed is a method for controlling the degradation of polyethylene including polymerizing ethylene monomer, recovering polyethylene, extruding the polyethylene, and controlling the degradation of polyethylene by measuring the SEI to the extruder and adjusting throughput and/or gear suction pressure keep SEI less than 300 kW.h/ton, and forming an article. | 04-19-2012 |
20140048963 | Polyethylene Fibers and Processes of Forming the Same - Fibers and methods of forming the fibers are described herein. The fibers generally include an ethylene based polymer exhibiting a molecular weight distribution of from about 2 to about 8. | 02-20-2014 |
Patent application number | Description | Published |
20090054264 | Method of Fabricating an Array of Capillaries on a Chip - The invention relates to a method of fabricating an array of capillaries of a chip, the method comprising the steps consisting in depositing at least one layer of a meltable or polymerizable construction material on a support plate, focusing and moving a laser beam on and over said layer respectively to melt or polymerize the material so as to form the side walls of the capillaries, and then fastening a cover plate on the side walls of the capillaries. The invention also provides a chip including an array of capillaries in which chemical or biological molecules are fixed, and a chip including an array of chromatography and/or electrophoresis capillaries. | 02-26-2009 |
20100022400 | METHOD FOR THE QUANTITATIVE MEASUREMENT OF BIOMOLECULAR TARGETS DEPOSITED ON A BIOCHIP, AND DEVICE FOR IMPLEMENTING IT - The present invention relates in particular to a method for the quantitative measurement of biomolecular targets that have been deposited on a biochip ( | 01-28-2010 |
20100203540 | DEVICE FOR SEPARATING AND/OR ANALYZING SEVERAL MOLECULAR TARGETS DISSOLVED IN A COMPLEX MIXTURE - The invention relates to a device for separating and/analyzing several molecular targets dissolved in a complex mixture which is characterized in that it comprises
| 08-12-2010 |
20110109904 | Method and Device for High Speed Quantitative Measurement of Biomolecular Targets on or in Biological Analysis Medium - The present invention relates to a device and method for the high speed quantitative measurement of biomolecular targets on the surface or in the body of a planar medium for biological analysis. The method, according to the invention, includes the following, steps: a) at least two laser beams (F″) are focused and overlaid on each measuring point of said medium by the simultaneous intersection of these beams to extract a contained hot plasma (P), including a measured chemical element present in the targets and another chemical element exogenous to the targets and present in a known quantity on this medium; b) luminous emission rays for each plasma, corresponding to the quantified element and exogenous element, are detected and anglyset each measuring point while measuring the brightness of these rays; then c) the concentration in each measuring point of the quantified element is determined through prior calibration of the rays of the qualified element to determine a correlation between the brightness of the rays, specific to said element, and the concentrations the latter in mixtures of the quantified element and the exogenous element in known proportions. | 05-12-2011 |
20130012400 | METHOD AND DEVICE FOR SEPARATING MOLECULAR TARGETS IN A COMPLEX MIXTURE - The invention relates to a method of analysing molecular targets contained in a complex mixture, comprising the following steps consisting in: a) bringing the mixture of molecular targets to be analysed into contact with an array of different types of primary probes, whereby each type of primary probe forming the array can bind specifically to a type of target selected from among the molecular targets, under conditions that enable specific binding between the molecular targets and the primary probes; b) optionally eliminating the primary probes that are not bound specifically to a molecular target; c) separating the molecular targets and the primary probes which are bound specifically in a probe/target complex, such as to recover the array of primary probes representing a fingerprint of the molecular targets to be analysed; and d) quantitatively analysing the primary probes eluted in step c. | 01-10-2013 |