Patent application number | Description | Published |
20110174415 | METHOD TO PRODUCE VERY STIFF POLYPROPYLENE - The present invention relates to a process for the preparation of a propylene homo- or copolymer, comprising the following steps: (i) feeding propylene and hydrogen, and optionally one or more comonomers, to a reactor R1, wherein the hydrogen is fed to the reactor R1 in a periodically varying amount, (ii) preparing a first fraction of the propylene homo- or copolymer in the reactor R1 in the presence of a catalyst, (iii) transferring the first fraction to a reactor R2, and (iv) preparing a second fraction of the propylene homo- or copolymer in the reactor R2, wherein the melt flow rate MFR (2.16 kg, 230° C.) of the propylene homo- or copolymer is higher than the melt flow rate MFR (2.16 kg, 230° C.) of the first fraction. | 07-21-2011 |
20110224387 | PREPARATION OF PROPYLENE COPOLYMER WITH DYNAMICALLY OPERATED REACTOR - The present invention relates to a process for the preparation of a propylene copolymer P1 having ethylene-derived comonomer units, which comprises the following steps: (i) introducing propylene, ethylene, and hydrogen into a polymerisation reactor R1, wherein the ethylene is fed to the polymerisation reactor R1 in a periodically varying amount, (ii) preparing the propylene copolymer in the polymerisation reactor R1 in the presence of a catalyst. | 09-15-2011 |
20110288213 | MULTIMODAL POLYMER OF PROPYLENE, COMPOSITION CONTAINING THE SAME AND A PROCESS FOR MANUFACTURING THE SAME - The present invention aims to provide a multimodal polymer of propylene comprising a matrix of semicrystalline polymer and a rubber (D) dispersed in said matrix, the multimodal polymer comprising units derived from propylene of from 85 to 99% by weight and units derived from ethylene or C | 11-24-2011 |
20120165440 | MULTIMODAL POLYMER OF PROPYLENE, COMPOSITION CONTAINING THE SAME AND A PROCESS FOR MANUFACTURING THE SAME - The present invention aims to provide a multimodal polymer of propylene comprising a matrix of semicrystalline polymer and a rubber (D) dispersed in said matrix, the multimodal polymer comprising units derived from propylene of from 85 to 99% by weight and units derived from ethylene or C | 06-28-2012 |
20130309431 | HETEROPHASIC POLYPROPYLENE WITH EXCELLENT CREEP PERFORMANCE - Heterophasic propylene copolymer comprising (a) a matrix (M) being a polypropylene (PP), said polypropylene (PP) has a polydispersity index (PI) of at least 5.0, and (b) an elastomeric propylene copolymer (EC) dispersed in said matrix (M), wherein (i) said heterophasic propylene copolymer has a melt flow rate MFR | 11-21-2013 |
20140058051 | HIGH THROUGHPUT REACTOR ASSEMBLY FOR POLYMERIZATION OF OLEFINS - Reactor assembly for the production of polymers including a fluidized bed reactor ( | 02-27-2014 |
20140069547 | COATING COMPOSITION - Coating composition comprising an ethylene copolymer containing not more than 5 mole-% comonomer, whereby the fraction of the ethylene copolymer having a molecular weight of 300 000 g/mol-600 000 g/mol has a methyl branching of more than 4.0 Methyl per 1000 C as determined by SEC/FT-IR analysis. | 03-13-2014 |
20140080991 | FLEXIBLE REACTOR ASSEMBLY FOR POLYMERIZATION OF OLEFINS - The invention relates to a reactor assembly for the production of polymers including a fluidized bed reactor ( | 03-20-2014 |
20140202847 | REMOVING VOLATILE COMPOUNDS FROM POLYMER GRANULES BY VAPOUR DISTILLATION - The present invention relates to a process for treating polyolefin granules in a treatment vessel comprising the steps of: —Providing a bed of granules in liquid in said treatment vessel —Withdrawing a first stream of liquid from said treatment vessel, wherein said first stream of liquid contains hydrocarboneous compounds —introducing a first stream of vapour into said treatment vessel —Withdrawing a second stream of vapour from said treatment vessel wherein said second stream of vapour contains volatile hydrocarboneous compounds —Recovering the granules from said treatment vessel wherein said first stream of vapour has a temperature from Tb to Tb+10° C., wherein Tb is the boiling point of the liquid at the applied pressure, and said first stream of vapour produces an upwards rising vapour stream in said treatment vessel, the superficial vapour velocity of which is no more than 0.2 m/s, and a plant suitable for conducting said process. | 07-24-2014 |