|
Match
|
Document |
Document Title |
|
|
7622535 |
Method for continuous production of water-absorbent resin
The present invention relates to a method for continuous production of a water-absorbent resin by use of an continuous polymerization device having a charge part of a monomer aqueous solution; an...
|
|
|
7619046 |
Production of polymers in a conical reactor
The present invention provides a process for the preparation of polymer which comprises the steps of i) feeding an aqueous mixture comprising a monoethylenically unsaturated monomer or a mixture of...
|
|
|
7615606 |
Method and device for continuously producing copolyamides with melting points greater than 265° C.
The invention relates to a method for continuously producing copolyamides with melting points greater than approximately 265° C. According to the invention, in a continuous process, partially...
|
|
|
7608225 |
Tower reactor and use thereof for the continuous production of high molecular weight polyesters
The invention relates to a tower reactor and the use thereof for producing high-molecular weight polyesters, such as e.g. polyethylene terephthalate (PET), polybutylene terephthalate (PBT),...
|
|
|
7601787 |
Ethylene polymerization process
A process for polymerizing ethylene is disclosed. The polymerization is performed in the presence of a Ziegler-Natta catalyst system in two slurry reaction zones. Most of the polyethylene (70-95...
|
|
|
7592410 |
Polyethylene resin with narrow particle size distribution
The present invention relates to a polyethylene resin comprising A) a first ethylene homo- or copolymer fraction, and B) a second ethylene homo- or copolymer fraction, wherein fraction (A) has a...
|
|
|
7585924 |
Pressurized high temperature polymerization process and polymerization system used therein
The present invention is directed to a novel high temperature polymerization process operating at high pressures for producing a polymer. The process includes conveying hybrid reactor mixtures,...
|
|
|
7579422 |
Propylene random copolymer and process for the production thereof
The present invention relates to a process for preparing a propylene random copolymer comprising polymerization of propylene with a comonomer, said comonomer being ethylene or an α-olefin...
|
|
|
7579414 |
Fine-particled amphoteric aqueous polymer dispersion method for production and use thereof
Finely divided, amphoteric, aqueous polymer dispersions which are obtainable by a two-stage polymerization, a prepolymer being prepared in the first polymerization stage from a monomer mixture...
|
|
|
7576166 |
Process for the production of linear low-density polyethylene composition
A process for producing bimodal linear low-density polyethylene polymer compositions, useful for making films. The polymer compositions have a melt flow rate MFR 2 of 0.4 to 1.0 g/10 min and a...
|
|
|
7553916 |
Loop reactor with varying diameter for olefin polymerization
Process for polymerizing at least one olefinic monomer in a loop reactor at from 20 to 150° C., but below the melting point of the polymer to be formed, and a pressure of from 5 to 100 bar, where...
|
|
|
7531605 |
Process for producing polyolefin resin composition and polypropylene composition
A process for producing a polyolefin-based resin composition comprises, in the first polymerization stage, polymerizing an α-olefin having 4 to 20 carbon atoms, a styrene or a cyclic olefin in the...
|
|
|
7524903 |
Process and apparatus for the polymerization of propylene
A process for preparing heterophasic propylene copolymers by polymerizing propylene in the presence of a polymerization catalyst and hydrogen as a molecular weight regulator, the process comprising...
|
|
|
7524897 |
Film with high impact strength
A film with a broad molecular weight distribution, excellent impact strength and a high dart drop value or moderate dart drop value accompanied by good optical property consisting of a bimodal...
|
|
|
7521507 |
Polypropylene-based adhesive compositions
An adhesive blend is described that can include a semi-crystalline copolymer of propylene and at least one comonomer selected from the group consisting of ethylene and at least one C 4 to C 20 ...
|
|
|
7517947 |
Polymer transfer within a polymerization system
A method for transferring polymer within a polymerization system, comprising continuously withdrawing the polymer from the reactor and conveying the polymer from a reactor to a flash chamber via a...
|
|
|
7514508 |
Process for the polymerization of ethylene
Process for preparing a broad molecular weight polyethylene by polymerizing ethylene in the presence of a polymerization catalyst, the process comprising the following steps, in any mutual order:
...
|
|
|
7482409 |
Process for producing ethylene-α-olefin-polyene copolymer
The object of the present invention is to provide a process for producing an ethylene-α-olefin-polyene copolymer by continuous multistage polymerization which can give an...
|
|
|
7473745 |
Preparation of multimodal polyethylene
Disclosed is a polyethylene composition. The composition comprises single-site multimodal resin A and single-site multimodal resin B, wherein resin A differs from resin B in molecular weight, in...
|
|
|
7470756 |
Propylene random copolymer and process for the production thereof
The present invention relates to a process for preparing a propylene random copolymer comprising polymerisation of propylene with a comonomer, said comonomer being ethylene or an α-olefin...
|
|
|
7465772 |
Apparatus for continuous polymerization of olefin, method for transferring a polymer powder, and method for continuous polymerization of olefin
An apparatus and method for continuous polymerization of olefin(s), and a method for transferring a polymer powder from one reactor to another in the apparatus are disclosed. The apparatus includes...
|
|
|
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...
|
|
|
7423099 |
Process for producing polyolefin
A process for producing a polyolefin comprising a combination of liquid phase polymerization of α-olefin conducted in one or more liquid phase polymerization reactors and gas phase polymerization...
|
|
|
7423098 |
Polyethylene process
An ethylene polymerization process is disclosed. Ethylene is polymerized in two slurry reaction zones with a C 6 -C 10 alpha-olefin in the presence of a single-site catalyst capable of making a...
|
|
|
7414098 |
Gas-phase catalytic polymerization of olefins
Process for the gas-phase catalytic polymerization of olefins carried out in a plurality of interconnected polymerization zones, the process comprising feeding one or more monomers to said...
|
|
|
7405260 |
Method for controlling the polymer flow in a polymerization process
A method for controlling the flowability of polymer particles flowing downward in a densified form inside a polymerization reactor, in which one or more monomers are gas-phase polymerized in the...
|
|
|
7396892 |
Process for removal of intermediate hydrogen from cascaded polyolefin slurry reactors
Multimodal polyolefin polymers may be prepared in series-connected polymerization reactors where a prior reactor is a slurry reactor employing light solvent as the slurry medium and hydrogen to...
|
|
|
7388059 |
Ethylene polymer, catalyst for producing thereof and method for producing thereof
A method for producing an ethylene polymer which comprises continuously polymerizing ethylene alone or copolymerizing ethylene and a C 3 -C 8 α-olefin by multistage polymerization in a plurality...
|
|
|
7378472 |
Injection moulding polymer
The use of a multimodal polyethylene composition comprising as comonomers to ethylene at least two C 4-12 alpha olefins in injection molding.
|
|
|
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...
|
|
|
7351777 |
Retarded anionic polymerization of vinyl aromatic monomers using insoluble or heterogeneous retardants
This invention is a process to manufacture high quality vinyl aromatic polymer that is essentially free of unreacted vinyl aromatic monomer using retarded anionic polymerization wherein the...
|
|
|
7351776 |
Bulk polymerization process
A method for the continuous production of polydienes, the method comprising the steps of (a) charging a mixture of one or more monomer, catalyst system, and less than 50% weight percent organic...
|
|
|
7348381 |
High modulus, high ductility polyolefins
Provided herein are propylene polymers which are capable of being used as thermoplastic polyolefins just as they emerge from the reactor system described, without further compounding of components...
|
|
|
7332561 |
Polytrimethylene terephthalate composition particles and process for producing same
Poly(trimethylene terephthalate) composition particles comprising 80% by weight or more of trimethylene terephthalate units based on the entire repeating units, having an intrinsic viscosity from...
|
|
|
7332556 |
Crystalline polymers of propylene having improved processability in the molten state and process for their preparation
Crystalline polymers and copolymers of propylene having total MIL values>2 g/10 minutes, total [η] values in tetrahydronaphthalene at 135° C.≦2.8 dl/g, mW/MN values>20, a fraction...
|
|
|
7323528 |
Block copolymers containing functional groups
The present invention provides a block copolymer of styrene and an unsaturated cyclic anhydride, such as maleic anhydride, a process for making a copolymer using controlled free radical...
|
|
|
7256240 |
Process of making polymer blends
In a process for producing a polymer blend, at least one first monomer is polymerized in a first slurry phase reaction zone in the presence of a supported first catalyst to produce a thermoplastic...
|
|
|
7256239 |
Polymer film
A film of a polyethylene produced by polymerization catalysed by a single site catalyst and comprising as comonomers to ethylene at least two C 4-12 alpha olefins, preferably but-1-ene and hex-1-ene.
|
|
|
7253239 |
Method for preventing or inhibiting fouling in a gas-phase polyolefin polymerization process
A method for preventing or inhibiting fouling in a gas-phase polyolefin polymerization process. The method includes maintaining the inside surface temperature of the process equipment below the dew...
|
|
|
7250473 |
Multimodal polyolefin pipe
The present invention relates to a polyethylene resin having a multimodal molecular weight distribution, said resin being further characterized in that it has a density in the range of from about...
|
|
|
7235618 |
Polypropylene polymers
Embodiments of the present invention include a polypropylene homopolymer synthesized from a metallocene catalyst system and methods of forming the homopolymer, the homopolymer having an aluminum...
|
|
|
7232866 |
Ethylene polymer composition
An ethylene polymer composition having a density of at least 950 kg/m 3 , a fluidity index MI 5 of 0.05 to 2 g/10 min and a content of alpha-olefin containing from 4 to 10 carbon atoms of from...
|
|
|
7223822 |
Multiple catalyst and reactor system for olefin polymerization and polymers produced therefrom
Disclosed is a process for producing branched polymers including at least 50 mol % C 3 –C 40 olefins. The process may include: (1) feeding a first catalyst, an activator, and one or more C 2...
|
|
|
7217772 |
Process for production of propylene homopolymers
A process for producing propylene homopolymers comprises producing a homopolymer in a reactor train having a first stage and a second stage, wherein the first stage is normally used for homopolymer...
|
|
|
7204962 |
Production apparatus for polybutylene terephthalate
Polybutylene terephthalate having good heat stability and excellent hydrolysis resistance is continuously produced in a series of a first reactor for reacting an aromatic dicarboxylic acid...
|
|
|
7163989 |
Processes and apparatus for continuous solution polymerization
This invention relates to processes and plants for continuous solution polymerization. Such plan and process include a pressure source, a polymerization reactor, downstream of said pressure source,...
|
|
|
7135544 |
Living olefin polymerization processes
Processes for the living polymerization of olefin monomers with terminal carbon-carbon double bonds are disclosed. The processes employ initiators that include a metal atom and a ligand having two...
|
|
|
7135541 |
Polyester process using a pipe reactor
There are disclosed polyester processes using a pipe reactor and corresponding apparatuses. In particular, there are disclosed processes and corresponding apparatuses including an esterification...
|
|
|
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...
|
|
|
7127853 |
Process for producing polyethylene pipe resins
A polyethylene resin comprising from 35 to 49 wt. % of a first polyethylene fraction of high molecular weight and from 51 to 65 wt. % of a second polyethylene fraction of low molecular weight, the...
|