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6727327 |
Aqueous n-butyl acrylate copolymer dispersions for use as laminating adhesives
The present invention provides aqueous polymer dispersions comprising at least one particulate polymer P having a glass transition temperature T g of less than 0° C. which is composed of...
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6727333 |
Solid catalyst component and catalyst for olefin polymerization, process for producing olefin polymer and process for producing solid catalyst component
There are disclosed: (i) a first solid catalyst component (A1) obtained by contacting (a) a carrier of carboxyl group-carrying polymer particles having an average particle size of from about 1 to...
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6723774 |
Method for producing caoutchouc particles
The invention relates to a method for producing caoutchouc particles (K) by means of emulsion polymerisation in the presence of an emulsifier and a polymerisation initiator. Said particles contain...
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6689846 |
Process of producing α-olefin polymers
The present invention relates to a process for polymerizing α-olefins in at least two stages, the first stage comprising at least one bulk reactor and optionally at least one gas phase reactor for...
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6683146 |
Heterogeneous polymerization catalyst, process for producing acrylic polymer, and acrylic polymer
A process for producing an acrylic polymer capable of providing a polymer controlled in molecular weight and free of colorization, and a heterogeneous polymerization catalyst used in the process...
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6673861 |
INVERSE LATICES SELF-INVERTIBLE WITH RESPECT TO WHITE MINERAL OILS, SQUALANE, HYDROGENATED POLYISOBUTENE, ISOHEXADECANE OR ISODODECANE AND COSMETIC, DEMOCOSMETIC, DERMOPHARMACEUTICAL OR PHARMACEUTICAL COMPOSITIONS COMPRISING THEM
Composition comprising an oil phase, an aqueous phase, at least one emulsifying agent of water-in-oil (W/O) type and at least one emulsifying agent of oil-in-water (O/W) type in the form of a...
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6646074 |
Process for the continuous gas-phase (co-) polymerisation of olefins in a fluidized bed reactor
A process for the continuous gas-phase (co-)polymerisation of olefins in a fluidised bed reactor using a Ziegler-Nata type catalyst wherein the polymerisation is performed in the presence of a...
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6642323 |
Process to produce a homogeneous polyethylene material
The present invention concerns a process for producing homogeneous polyethylene compositions and processes for making high density, medium density and low density films therefrom. The process...
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6639028 |
Process for the continuous gas-phase (co-)polymerization of olefins in a fluidized bed reactor
A process for the gas-phase (co-)polymerization of olefins in a fluidized bed reactor using a chromium oxide catalyst. The polymerization is performed in the presence of a process aid additive.
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6620894 |
Start-up procedure for multiple catalyst polymerization systems
This invention relates to a method to start up an olefin polymerization process comprising: a. calculating a trajectory, from elements including catalyst deactivation rate constants (k d ), for...
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6605662 |
Multistage aqueous dispersion of polymer particles having a soft core and hard shell
A process for preparing aqueous polymer dispersions comprises first of all subjecting ethylenically unsaturated monomers to free-radical aqueous emulsion polymerization to prepare an aqueous...
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6562924 |
Process for the gas-phase (co)-polymerization of olefins in a fluidized bed reactor
A process for the gas-phase (co-)polymerization of olefins in a fluidized bed reactor using a metallocene catalyst in that the polymerization is preformed in the presence of a process aid additive...
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6559255 |
Controlled free radical emulsion and water-based polymerizations and seeded methodologies
Nitroxides having an alpha-carbon atom with a destabilizing moiety are effective control agents for emulsion and water-based polymerizations, including the formation of block copolymers from a wide...
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6555638 |
Production of water-expandable styrene polymers
A process for the preparation of styrene polymers containing water as the sole expanding agent by polymerization of styrene in aqueous suspension in the presence of an amphiphilic organic...
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6552116 |
Multistage emulsion polymer
A multi-stage emulsion polymer containing at least one first domain having a glass transition temperature Tg of from −10 to +40° C. and at least one second domain having a Tg of from +50 to...
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6515065 |
Protective colloids
Water-soluble nonionic polyurethanes as protective colloids for the polymerization of olefinically unsaturated monomers in aqueous medium wherein the water-soluble nonionic polyurethanes have been...
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6512062 |
Polymerization of non-fluorinated monomers in carbon dioxide
A method of forming a water soluble polymer comprises polymerizing a non-fluorinated monomer in a reaction medium comprising carbon dioxide to form a water soluble polymer, wherein the...
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6509429 |
Process for preparing fluorine-containing polymer
A process for preparing a fluorine-containing polymer through emulsion polymerization method which enhances productivity while maintaining excellent physical properties of the fluorine-containing...
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6502621 |
Processes for forming styrene/methyl methacrylate copolymers
Copolymers are formed by suspension polymerization of monomers, including one or more styrenic monomers, and methyl methacrylate. The polymerization can be carried out in the presence of one or...
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6497269 |
Processes for forming styrenic copolymers
Copolymers are formed by suspension polymerization of monomers, including one or more styrenic monomers, and one or more acrylic monomers. The monomers can be polymerized in the presence of...
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6488764 |
Cement composition with polymeric latexes prepared in the presence of amps seed
A cement composition comprising a polymeric latex prepared by aqueous emulsion polymerization of a monomeric mixture comprising styrene and butadiene in the presence of a seed polymer prepared by...
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6472486 |
Controlled stable free radical emulsion polymerization processes
Controlled stable free radical emulsion polymerization processes employ nitroxide control agents having an alpha carbon atom bearing a destabilizing substituent such as hydrogen. The emulsion...
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6472484 |
Processes for producing polyolefin composition
The present invention provides a method for producing a polyolefin composition having a narrow composition distribution and is characterized in that when at least two olefins are copolymerized in...
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6458501 |
Forming a toner using surfactant-free emulsion polymerization
The latex of an emulsion aggregation toner is prepared without the use of a surfactant. The process comprises preparing an emulsion of monomers in water without a surfactant; adding a free radical...
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6448348 |
Process for polymerizing olefins with supported Ziegler-Natta catalyst systems
A catalytic polymerization process for preparing polymer products is provided. The polymerization process is either homopolymerization of olefins or copolymerization of olefins with alpha-olefins....
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6441082 |
Process for preparing aqueous polymer dispersions
Redispersible polymer powders are prepared by emulsion polymerization of ethylenical, unsaturated monomers in the presence of a protective colloidal stabilizer containing 20 to 95 weight percent of...
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6417300 |
Terpolymerization
Disclosed are terpolymers and processes of terpolymerization, wherein the terpolymer comprises units derived from ethylene, 1-pentene and another alpha-olefin containing at least six carbon atoms.
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6413629 |
Easy adhesion film for transparent conductive thin film
An easy adhesion film for a transparent conductive thin film comprises a transparent polymer film and an easy adhesion layer formed on the transparent polymer film, wherein the easy adhesion layer...
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6414089 |
Method of manufacturing polymer films having second order non-linear optical properties, polymer films, and non-linear optical element
A method of manufacturing a polymer film having second order non-linear optical properties which has excellent stability of orientated molecules and does not become disorientated, and a polymer...
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6407184 |
Method of multistage gas phase polymerization, apparatus therefor and device for reducing entrainment of subcomponents in polymer powder in apparatus for multistage gas phase polymerization
A method of multistage gas phase polymerization is provided comprising performing polymerization of a feed gas mixture at least containing ethylene gas, an α-olefin gas and hydrogen gas in an...
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6388016 |
Dynamic vulcanization of polymer blends from series reactors
A method for the dynamic vulcanization of polymer blends made by solution polymerization in series reactors. The polymer blends are mixed under conditions of heat and shear, and a curing agent is...
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6388017 |
Process for producing a polymer composition
A process is provided for producing a polymer composition. The process comprises contacting a narrow molecular weight distribution base polymer and a high molecular weight polymer component. The...
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6384159 |
Production of polyethylene with a titanium amide catalyst
The present invention relates to a process to produce polyethylene through homopolymerization or copolymerization of ethylene with alpha-olefins in the presence of a titanium amide catalyst...
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6379599 |
Process for the preparation of molecularly imprinted polymers useful for separation of enzymes
The invention relates to a process for the preparation of molecularly imprinted polymers useful for separation of enzymes, which comprises the steps of reacting a complex of enzyme and affinity...
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6376636 |
Modular, energy-dissipating material and method for using it
Modular, energy-dissipating material prevents failure of adhesives, fibers and composite and other structures. The modules comprise folded subunits or domains that unfold in a stepped fashion at...
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6372866 |
Process for producing cationic emulsion
A process for producing a cationic emulsion stable to alkalis having an average particle diameter of 0.01 to 0.1 micron, in which, using as an emulsifier, a water-soluble polymer A 2 obtained by...
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6365647 |
Process for preparing a polymeric latex
A polymeric latex prepared by aqueous emulsion polymerization of a monomeric mixture comprising styrene and butadiene in the presence of a seed polymer prepared by aqueous emulsion polymerization...
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6353065 |
Emulsion polymerization in the presence of a stable free radical
A process for the emulsion polymerization in the presence of a stable free radical of at least one monomer which can be polymerized by the radical route, which emulsion comprises a liquid aqueous...
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6337378 |
Process for producing polyvinyl chloride paste blending resin
The present invention is a process for producing a polyvinyl chloride paste blending resin comprising polymerizing a vinyl chloride-based monomer by a suspension polymerization in an aqueous...
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6331598 |
Emulsion polymer having a vesiculated structure and the process for preparing the same
A process for preparing an emulsion polymer comprising placing a first mixture of monomers in a feed tank B which is connected directly to a reactor, placing a second mixture of monomers in a feed...
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6320006 |
Suspension polymerization process using suspending agent-containing slurry
A suspending agent-containing slurry is disclosed which comprises a dispersant and a particulate suspending agent having a particle size distribution in which the particle diameter at...
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6310155 |
Process for preparing acrylic polymers in the presence of a radical initiator and a polymeric suspending agent
Process for the polymerization in aqueous suspension of acrylic monomers in the presence of a polymeric suspending agent, homopolymer or copolymer of a compound of formula: ##STR1## wherein: R 1 ...
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6291553 |
Production of monodisperse spherical polymers using seed polymers with a comb structure
Producing spherical polymers having a weight-averaged average particle diameter of 1 to 50 μm using a seed/feed process comprising the following steps: a) suspension of a monodisperse spherical...
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6286254 |
Water-holding carrier for plants
A water-retaining support for a plant exhibiting a water-retaining ability comparable to that of a polyacrylic acid-type hydrogel without inhibition of root origination or root elongation. The...
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6281309 |
Flourinated solid acids as catalysts for the preparation of hydrocarbon resins
Fluorinated solid acids and supported fluorinated solid acids are used as catalysts for the polymerization of a feed stream containing at least one of pure monomer, C5 monomers, and C9 monomers to...
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6277932 |
Polymerization processes and products
Beads are made from water-soluble monomer or monomer blend by reverse phase bead polymerization by extruding aqueous monomer beads into or onto the top of an upflowing column of non-aqueous liquid...
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6265477 |
Aqueous dispersion of a particulate high molecular weight anionic or nonionic polymer
An aqueous dispersion of a particulate high molecular weight water soluble anionic or nonionic polymer is prepared by polymerizing 0-7 mole percent of at least one anionic monomer and 100-93 mole...
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6239207 |
Active-methylene functionalized latex polymer prepared in the presence of a hydrophilic isoprene sulfuric acid polymer, and sheet material comprising same
A latex is prepared by polymerizing a polymerizable monomer having an active methylene group in the presence of a hydrophilic polymer. The hydrophilic polymer comprises an isoprene sulfonic acid or...
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6235828 |
Aqueous polymerization of acrylamide in the presence of polyvinylpyrrolidone
A method for producing a highly concentrated aqueous acrylic amide-based polymer dispersion which is inexpensive, good in fluidity and easy to handle is provided. The method comprises polymerizing...
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6225420 |
Procatalyst and process for the preparation of a multimodal ethylene polymer
A procatalyst and a process for the preparation of a multimodal ethylene homopolymer or copolymer by gas-phase polymerisation is described. The procatalyst used in the process is prepared by: a)...
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