Patent application number | Description | Published |
20080242808 | Interconnected Loop Reactors - The present invention describes a reactor comprising two interconnected loops wherein the growing polymer flows continuously in circuit from the first loop to the second loop through a First pipe and back to the first loop through a second pipe. It also discloses process for polymerising olefins in two interconnected loop reactors. | 10-02-2008 |
20080255323 | Low Gel Chromium Catalysis - The present invention discloses the use of a chromium-based catalyst system in two serially connected loop reactors for copolymerising ethylene and a comonomer, at reduced productivity, the final polyethylene having a reduced amount of gel. | 10-16-2008 |
20090221788 | Apparatus and Method for Degassing Polymer Powder - The present invention relates to an apparatus for degassing polymer powder comprising a chamber having a first end and a second end opposite to each other, said chamber being equipped with at least one powder inlet and at least one gas outlet at the first end and with at least one powder outlet and at least one gas inlet at the second end, and a valve provided with a powder entry and a powder exit and arranged at the powder outlet of said chamber. The apparatus is characterised in that said chamber is equipped with a gas line joining a gas exit of the valve to the inside of the chamber at a position that is at a distance h | 09-03-2009 |
20100041825 | Method and System for Degassing Polymer Powder - The present invention relates to a method for degassing polymer powder comprising flushing the polymer powder in a first chamber with a first flow of flushing gas, transferring the polymer powder into a second chamber and flushing the polymer powder with a second flow of flushing gas in said second chamber. The present invention also relates to a system suitable for carrying out this method. | 02-18-2010 |
20110046323 | Process for Monomer Recovery From a Polymerization Process - The present relates to a process for optimizing the recovery of unreacted monomers from a polymerization process, wherein said process comprises the steps of
| 02-24-2011 |
20130030132 | PROCESS FOR PREPARING POLYOLEFIN - The invention relates to a process for preparing polyolefin in a loop reactor. The polymer is prepared by polymerizing olefin monomers in the presence of a catalyst to produce a polyolefin slurry while pumping said slurry through said loop reactor by means of a pump. The present process is characterized in that the catalyst is fed in the loop reactor at a distance to the pump. The invention allows production of the polymer with advantageous properties while leading to fewer blockages of the reactor. | 01-31-2013 |
20130123441 | Process for preparing polyolefins - The present invention relates to a process of preparing a polyolefin in a loop reactor by introducing anti-fouling agent through a sleeve provided around at least part of the shaft of the pump. Also, the invention relates to the use of anti-fouling agent to prevent or reduce fouling by feeding the anti-fouling agent against the impeller of the pump upon introduction to the loop reactor. | 05-16-2013 |
20130338314 | PROCESS FOR PREPARING ZIEGLER-NATTA PRODUCED POLYETHYLENE BLENDS - A process for preparing a multimodal polyethylene product with at least two different polyethylene resins can include producing a first polyethylene resin in the presence of a Ziegler-Natta catalyst in a reactor. The Ziegler-Natta catalyst used for the production of the first polyethylene resin has an average particle size (D50) of at most 15 μm. The HLMI of the first polyethylene resin is between 0.01 and 5 g/10 min. The process can include separately producing a second polyethylene resin in the presence of a Ziegler-Natta catalyst in a reactor. The MI | 12-19-2013 |
20130345360 | PROCESS FOR PREPARING POLYETHYLENE BLEND COMPRISING METALLOCENE PRODUCED RESINS AND CHROMIUM PRODUCED RESINS - A process for preparing a homogeneous polyethylene product can include producing a first polyethylene resin in the presence of a metallocene catalyst in a reactor. The first polyethylene resin can have a density of from 0.942 to 0.970 g/cm | 12-26-2013 |
20130345361 | PROCESS FOR PREPARING POLYOLEFIN BLENDS IN A DEVICE FOR CONTINUOUSLY PHYSICALLY MELTING AND BLENDING THE BLENDS - A process for preparing a polyolefin product can include providing a first high molecular weight (HMW) polyolefin resin having an HLMI of between 0.01 and 5 g/10 min, and separately providing a second low molecular weight (LMW) polyolefin resin having an MI | 12-26-2013 |
20140058039 | PROCESS FOR PREPARING POLYETHYLENE BLEND COMPRISING METALLOCENE PRODUCED RESINS AND ZIEGLER-NATTA PRODUCED RESINS - A process for preparing a homogeneous polyethylene product can include producing a first polyethylene resin in the presence of a metallocene catalyst in a reactor. The first polyethylene resin can have a density of from 0.940 to 0.970 g/cm | 02-27-2014 |
20140088272 | REACTOR AND PROCESS FOR PREPARING POLYOLEFIN - The invention relates to a process for preparing polyolefin in a loop reactor. The polymer is prepared by polymerizing olefin monomers in the presence of a catalyst to produce a polyolefin slurry while pumping said slurry through said loop reactor by means of a pump. The present process is characterized in that the catalyst is fed in the loop reactor at a distance to the pump. The invention allows production of the polymer with advantageous properties while leading to fewer blockages of the reactor. | 03-27-2014 |
20140094575 | Process for Monomer Recovery From a Polymerization Process - The present relates to a process for optimizing the recovery of unreacted monomers from a polymerization process, wherein said process comprises the steps of
| 04-03-2014 |
20140334984 | REACTOR FOR PREPARING POLYOLEFIN - The invention relates to a process for preparing polyolefin in a loop reactor. The polymer is prepared by polymerizing olefin monomers in the presence of a catalyst to produce a polyolefin slurry while pumping said slurry through said loop reactor by means of a pump. The present process is characterized in that the catalyst is fed in the loop reactor at a distance to the pump. The invention allows production of the polymer with advantageous properties while leading to fewer blockages of the reactor. | 11-13-2014 |