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| Number | Title | Issue Date |
| 7906581 | Method, apparatus and system for preparing adhesive-promoter-treated hot melt adhesives in continuous mode Methods, apparatuses, and systems for manufacturing a hot melt adhesive containing an adhesion promoter in a continuous mode include supplying a melted, hot melt adhesive to a mixing device at a first predetermined rate while simultaneously supplying an adhesion pro... | 03/15/2011 |
| 7718732 | Loop type reactor for polymerization Process for polymerising an olefin monomer in at least one continuous tubular loop reactor of a multiple reactor system, optionally together with an olefin comonomer, in the presence of a polymerisation catalyst in a diluent, to produce a slurry containing solid par... | 05/18/2010 |
| 7442743 | Propylene polymer resin with improved properties The present invention relates to a process for the production of a propylene polymer in a multistage polymerization process comprising the polymerisation of propylene in the presence of a catalyst in a first reaction zone comprising at least one slurry reactor to gi... | 10/28/2008 |
| 7378472 | Injection moulding polymer The use of a multimodal polyethylene composition comprising as comonomers to ethylene at least two C4-12 alpha olefins in injection molding. ... | 05/27/2008 |
| 7365136 | High melt strength polypropylene The present invention concerns a high melt strength propylene polymer or copolymer suitable for manufacturing foams and thermoformed product exhibiting a melt strength of at least 3 g and comprising a high molar mass portion and a low or medium molar mass portion. T... | 04/29/2008 |
| 7312279 | Polyethylene blend compositions Disclosed herein are various compositions, including a high density polyethylene composition, comprising: (a) a bimodal polyethylene component that includes a high molecular weight polyethylene component having a high average molecular weight (MWHMW) and ... | 12/25/2007 |
| 7288596 | Polyethylene compositions having improved tear properties Disclosed are various compositions, including but not limited to a high density multimodal polyethylene composition, that has a density of 0.935 g/cc or more, and that includes a blend of a first polyethylene component and a second polyethylene component, in which: ... | 10/30/2007 |
| 7282546 | Cocatalysts for reduction of production problems in metallocene-catalyzed polymerizations Polyolefins may be prepared using a cocatalyst conforming to the formula: AIRz(Xz)nLzm wherein Rz is a linear or branched organic moiety having at least 5 carbons and Xz | 10/16/2007 |
| 7247385 | Melt phase hydrosilylation of polypropylene Branched copolymers of polypropylene (PP) and polysilanes are prepared by procedures involving melt phase hydrosilylation. Such branched copolymers may be formed in situ during the melt phase hydrosilylation or may be prepared by subsequent processing. The branched ... | 07/24/2007 |
| 7244795 | Polymerization process using metallocene catalyst systems The present invention relates to a polymerization process using improved metallocene catalyst systems. Specifically, the catalyst systems of the present invention relate to a metallocene compound having optimized metals loading and activator concentration, and demon... | 07/17/2007 |
| 7232551 | Fluidized bed method and reactor for the treatment of catalysts and catalyst carriers A method for the treatment of catalysts or catalyst carriers by: a) introducing and distributing a gas in the lower section of a reactor containing a catalyst or catalyst carrier bulk material; b) forming a fluidized bed in the reactor; c) treating the particles in ... | 06/19/2007 |
| 7220806 | Process for increasing ethylene incorporation into random copolymers A process for preparing low melting copolymers comprising contacting a mixture of olefin monomers with a CpFlu-type metallocene catalyst under reaction conditions sufficient to form a copolymer. The copolymers thus prepared desirably display melt temperatures from a... | 05/22/2007 |
| 7192902 | Polymerization process with mixed catalyst compositions The application describes a mixed olefin polymerization catalyst composition comprising a support, a reaction product of at least one first organometallic compound and a first activator capable of rendering the first organometallic compound active for insertion poly... | 03/20/2007 |
| 7183332 | Process for the preparation of porous polymers and polymers obtainable thereof A process for preparing porous olefin polymers comprising bringing into contact in a polymerization reactor, at a temperature T1, one or more olefins of the formula (I) CH2═CHR1, R1 being hydrogen, a C1–C | 02/27/2007 |
| 7132474 | Method for preparing styrenic resin having high impact strength and gloss The present invention relates to a preparation method for acrylonitrile-butadiene-styrene resin by continuous bulk polymerization comprising the following steps of a) preparing a mixed solution of styrene monomers and acrylonitrile monomers by adding 5–10 weight %... | 11/07/2006 |
| 7115687 | Process and apparatus for producing olefin polymers The present invention concerns a process and an apparatus for continuous polymerisation of olefin monomers in a cascade of polymerisation reactors. According to the process, an olefin monomer is polymerised first in slurry phase in an inert hydrocarbon diluent in at... | 10/03/2006 |
| 7101629 | Polyethylene films A film comprising a polyethylene composition, the polyethylene composition in one embodiment comprising a high molecular weight component having a weight average molecular weight of greater than 50,000 amu and a low molecular weight component having a weight average... | 09/05/2006 |
| 7098301 | High pressure filter method of separating polymer solids and unreacted monomer The present invention provides a method of separating unreacted monomer from a polymerization process effluent stream. The polymerization process effluent stream has at least the following components: unreacted monomer, polymer, and solid fines. The method comprises... | 08/29/2006 |
| 7090927 | Polyethylene films A film comprising a polyethylene composition, the polyethylene composition in one embodiment comprising a high molecular weight component having a weight average molecular weight of greater than 50,000 amu and a low molecular weight component having a weight average... | 08/15/2006 |
| 7087689 | Method for polymerizing styrene A method of homogeneously polymerizing styrene comprising admixing an ethylenically unsaturated monomer and an initiation system that is soluble in the monomer. This system includes a metal; a peroxide, hydroperoxide or mixture thereof; and a reductant. Under approp... | 08/08/2006 |
| 7081285 | Polyethylene useful for blown films and blow molding Blown films and blow molded objects may be prepared using a polyethylene composition comprising a unimodal metallocene catalyzed polyethylene copolymer. The polyethylene copolymer has high melt fow rate and good melt strength allowing it to be useful in both extrusi... | 07/25/2006 |
| 7078164 | High throughput screen for identifying polymerization catalysts from potential catalysts A method is disclosed for screening potential catalysts for polymerization performance. The method includes the steps of reacting a potential catalyst with at least a first monomer under polymerization conditions, determining the polymerization performance of the ca... | 07/18/2006 |
| 7048882 | Process for producing a polyethylene coating on a substrate This invention concerns a process for coating a substrate, and an extrusion coating structure. According to the present process, the coating is provided by producing a bimodal polyethylene composition by subjecting ethylene, optionally with hydrogen and/or comonomer... | 05/23/2006 |
| 7033545 | Slurry polymerization reactor having large length/diameter ratio A polymerization loop reactor including a loop reaction zone, a continuous takeoff, and a fluid slurry disposed in the reaction zone. A generally cylindrical wall defines the loop reaction zone. The length of the loop reaction zone and the nominal outside diameter o... | 04/25/2006 |
| 7014821 | Pumping apparatus for slurry polymerization in loop reactors An olefin polymerization process and apparatus wherein a fluid slurry comprising monomer, diluent and catalyst is circulated in a continuous loop reactor by two or more pumps. The process and apparatus allow operating the reaction at significantly higher solids cont... | 03/21/2006 |
| 6960635 | Isotactic propylene copolymers, their preparation and use Unique copolymers comprising propylene, ethylene and/or one or more unsaturated comonomers are characterized as having: at least one, preferably more than one, of the following properties: (i) 13C NMR peaks corresponding to a regio-error at about 14.6 and... | 11/01/2005 |
| 6936471 | Instrument for high throughput measurement of material physical properties and method of using same An apparatus and method for screening combinatorial libraries of materials by measuring the response of individual library members to mechanical perturbations is described. The apparatus generally includes a sample holder for containing the library members, an array... | 08/30/2005 |
| 6908967 | High transparency and high flexibility elastoplastic polyolefin compositions Highly transparent and flexible elastoplastic polyolefin compositions which contain A) 10-20 parts by weight of a propylene homopolymer or copolymer with ethylene and/or one or more CH2═CHR α-olefins, the copolymer containing at least 95% by weight of ... | 06/21/2005 |
| 6552150 | Polymer films and a process for the production thereof The present invention concerns a polyethylene composition particularly suitable for film blowing. The invention also concerns a process for the production thereof. The composition comprises a low molecular weight portion having a density of more than 960 ... | 04/22/2003 |
| 6469110 | Process for preparing polypropylene alloys Described herein is a process and an apparatus for polymerizing propylene. The process comprises carrying out the polymerization in at least one slurry reactor and at least one gas phase reactor without recycling unreacted monomers to the slurry reactor. ... | 10/22/2002 |
| 6455643 | Process for preparing propylene homopolymers and copolymers Described herein is a process and an apparatus for preparing propylene homopolymers and copolymers, which comprises polymerizing propylene optionally with comonomers in the presence of a catalyst at elevated temperature and pressure in at least one slurry... | 09/24/2002 |
| 6399711 | Process for the preparation of rubber-reinforced styrene resin The present invention relates to a process for producing a rubber reinforced styrene-based resin, using a polymerization apparatus comprising: a prepolymerizer; mixing means and a circulating reactor connected with a circulation line; and a plug-flow type... | 06/04/2002 |
| 6391965 | Production process of ABS resin, ABS resin, and ABS-polycarbonate resin composition making use of the same A process is disclosed for the continuous production of an ABS resin. The polymerization step comprises at least two substeps, one being a first-stage substep of forming particles of the rubbery polymer and the other a second-stage substep of adjusting th... | 05/21/2002 |
| 6365682 | Process for the production of propylene terpolymers A process for producing terpolymers of propylene, comprising a) feeding into a slurry reactor a reaction mixture containing 50-85 w-% of propylene, 1-10 w-% of ethylene, 15-40 w-% of another C4 -C8 alpha-olefin, a catalyst system mai... | 04/02/2002 |
| 6355725 | Propylene-ethylene block copolymer compositions and processes for production thereof A propylene-ethylene block copolymer composition is disclosed which comprises 0.01 to 10% by weight of an A-B type propylene-ethylene block copolymer (C) consisting essentially of a polypropylene segment (A) and an ethylene-propylene random copolymer segm... | 03/12/2002 |
| 6346361 | Method for synthesizing polymeric AZO dyes A method of coupling a diazonium salt with an organic polymer comprising, on order, the steps of: providing a polymer in one liquid phase; providing an diazonium salt in a separate liquid phase; contacting the separate phases, and thereby reacting the pol... | 02/12/2002 |
| 6169148 | Preparation of oxidized polyolefin waxes A process for preparing oxidized polyolefin waxes by reacting polyolefin waxes with oxygen or oxygen-containing gases at from 140 to 200° C. and at pressures of from 5 to 200 bar involves conducting the oxidation reaction continuously in a tube reactor b... | 01/02/2001 |
| 5985995 | Process for producing hydrogenated rubbers Process for producing hydrogenated rubbers which allows an easy and effective deactivation of the living polymer before the hydrogenation step. The deactivation of living polymer is carried out using compounds with very good solubility in water of formula... | 11/16/1999 |
| 5973079 | Large particle generation Impact modified styrenic polymers having a discontinuous rubber phase having a particle size of at least 4 micrometers may be polymerized in continuous stirred tank reactors, stirred plug flow reactors and continuous stirred loop reactors using an auger a... | 10/26/1999 |
| 5942575 | Process for manufacturing rubber-reinforced vinyl-aromatic polymers Process for manufacturing vinyl-aromatic polymers reinforced with rubber and with bimodal morphology of the rubber phase, which process comprises: blending a first stream of a first vinyl-aromatic prepolymer, containing a fine-particle rubber phase prepared in... | 08/24/1999 |
