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8153735 |
Continuous polymerization process
The invention provides a process for preparing polymers based on vinyl ester, ethylene and optionally further comonomers in the form of aqueous polymer dispersions thereof or of water-redispersible...
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8114320 |
Method for producing polymer particles by the polymerization of fluid drops in a gas phase
A process for producing polymer particles by polymerizing liquid droplets in a gas phase by metering a liquid comprising at least one monomer from at least one feed by means of a multitude of bores...
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8053550 |
Process for the purification from heavy metals of vinyl chloride polymers
Process for the purification of a vinyl chloride polymer (PVC) comprising at least one compound of a heavy metal, according to which: (a) the PVC is dissolved in a water-miscible polar organic...
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7935783 |
Polystyrene processing apparatus and method
A method and apparatus for processing polystyrene. The method includes the steps: using at least one scrapped surface heat exchanger (160) to heat a solution of polystyrene dissolved in an organic...
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7893195 |
Method for recovering a polymer from a liquid medium
Method for recovering a polymer from a liquid medium (1) substantially containing the polymer and a solvent for the latter, wherein: (a) this liquid medium (1) is injected into a reactor (2)...
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7847057 |
PAEK powder, in particular for the use in a method for a layer-wise manufacturing of a three-dimensional object, as well as method for producing it
By a temper treatment a polyaryletherketone powder is processed such that it is particularly suited for the use in a method for a layer-wise manufacturing of a three-dimensional object. To this...
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7846986 |
Method for obtaining a polymer in a solution
Process for recovering at least one polymer in solution in a solvent by precipitation by means of a non-solvent introduced gradually into the solution to form the precipitation medium, whereby: in...
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7682484 |
Apparatus and method for removing volatile components from viscous liquids
A devolatilizer apparatus and method for devolatilization of viscous polymer liquids yields polymer products with very low levels of residual volatile components. A stream of liquid polymer is...
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7534855 |
Method of preparing vinylchloride-based resin capable of producing plastisol with low viscosity, vinylchloride-based resin prepared using the method, method of preparing vinylchloride-based plastisol, and vinylchloride-based plastisol prepared using the method
Provided is a method of preparing a vinylchloride-based resin. The method includes adding to a vinylchloride-based latex an acid, preferably, 1-7 parts by weight of the acid based on 100 parts by...
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7381761 |
Method for producing silicone-treated polymers
Silicone-containing addition polymers having numerous uses are prepared by polymerizing addition polymerizable monomers in the presence of a silicone-containing polyvinyl alcohol, and/or by adding...
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7312259 |
Process for manufacturing polymers
The present invention relates to a process for preparing dry polymer granules having increased minimum ignition energy, lowered to unchanged maximum explosion pressure, lowered explosion strength...
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7256225 |
Methods of preparing a polymeric material
A method is disclosed to prepare a polymeric material by filtering solutions of poly(arylene ether) and/or poly(alkenyl aromatic) through one or more filtration systems to provide a material having...
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7034067 |
Adjustable jet disperser for producing aqueous two-component polyurethane paint emulsions
The invention relates to a process for the production of aqueous two-component polyurethane lacquer emulsions, with variable throughput, and to the use thereof as high-quality lacquers and coatings.
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6936685 |
Method for isolating polyorganosiloxanes
The invention relates to a method for isolating polyorganosiloxanes from an aqueous dispersion, wherein the polyorganosiloxanes are separated from water in a dissolved form with the aid of an...
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6835805 |
Polymers
A method of production of a homopolymer or copolymer or homo-oligomer or co-oligomer product characterised in that the product is obtained by condensation reaction of a diaminoanthracene,...
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6762221 |
Use of naphthalenesulfonic acid-formaldehyde condensates products as drying aids
Naphthalenesulfonic acid-formaldehyde condensates are used as assistants in the drying of aqueous polymer dispersions. Also described is a process for preparing polymer powders by drying, using...
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6455663 |
Process for the manufacture of low molecular weight polyphenylene ether resins through redistribution
The invention relates to a novel process for the manufacture of functionalized polyphenylene ether resins through redistribution with a functionalized phenolic compound in the polyphenylene ether...
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6307012 |
Processes for spray drying of polymer-containing dispersions water-in-oil emulsions and water-in-oil microemulsions
Processes for spray drying water-soluble and water-swellable vinyl-addition polymer-containing dispersions, emulsions and microemulsions to obtain substantially dry water-soluble or water-swellable...
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6080804 |
Spray drying of functionalized polyacrylamide microemulsions
Processes for producing free flowing, Mannich and glyoxal polyacrylamide water soluble and water-swellable granules from a water-in-oil emulsion and compositions comprising such dry polymer...
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6028167 |
Use of phenolsulfonic acid-formaldehyde condensation products as drying aids
Phenolsulfonic acid-formaldehyde condensates are used as assistants in the drying of aqueous polymer dispersions.Also described are a process for preparing polymer powders by drying, using these...
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H001839 |
Supercritical fluid processes
A process for the preparation of toner additive wax particles which comprises the micronization of said particles from a supercritical solution.
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5981696 |
Process for preparing coating powder compositions and their use for making coatings
The invention concerns a process for preparing coating powder compositions in which one or a plurality of base resins and one or a plurality of hardeners, each of which is in solid form, is...
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5981653 |
Process for the production of aqueous stoving coating compositions
The present invention relates to a process for the production of aqueous dispersions which form powder coatings at room temperature, have an average particle size of 0.1 to 10 μm, contain polyols ...
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5879796 |
Organic/inorganic particulates
This invention concerns an organic/inorganic composite in particulate form prepared by spray drying a solution or dispersion comprising an organic polymer and an inorganic glassy polymer precursor...
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5767231 |
Method of producing non-vitrified processing aid low in residual monomers for thermoplastic polymers
A method for lowering the residual monomer content of non-vitrified processing aids for thermoplastic polymers involves subjecting an emulsion polymerizate containing methylmethacrylate and,...
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5723518 |
Aqueous two-component polyurethane coating compositions and a method for their preparation
A method is described for the preparation of aqueous coating compositions based on resin binders containing isocyanate-reactive hydrogen atoms and polyisocyanates, by mixing the components with...
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5696228 |
Process for producing substantially dry polymer particles from aqueous dispersions
Aqueous dispersions of cationic water-soluble polymers are provided, as well as processes for making and methods of using the same.
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5606015 |
Polymer powder stability
A method for improved polymer powder stability is provided, particularly spray-dried emulsion polymers, by spray-drying emulsion polymers with selected low HLB surfactants. Stable spray-dried...
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5554707 |
Granular vinyl chloride resin and process for its preparation
A granular vinyl chloride resin having a mixture comprising the following vinyl chloride resin particles (A), (B) and (C) as main components granulated to have a spherical shape with a diameter of...
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5475084 |
Process for the production of polycarbonate powder
A process for the production of a polycarbonate powder comprising introducing an organic solvent solution of polycarbonate and steam into a mixing nozzle and obtaining the polycarbonate powder from...
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5449747 |
Method for producing a vinyl chloride resin
A method for producing a vinyl chloride resin, which comprises spray drying a vinyl chloride polymer latex by means of a double fluid nozzle, wherein steam or a gas mixture of steam and an inert...
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5426137 |
Method for continuously mixing fluids
Apparatus and method of hydrating a particulated polymer and producing a well treatment gel includes a mixer for spraying the polymer with water at a substantially constant water velocity and at a...
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5378786 |
Spherical vinyl chloride granules for paste molding
Spherical vinyl chloride resin granules and a process for producing the same are disclosed. The granules exhibit excellent particle characteristics and sol-forming properties and are therefore...
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5357007 |
Method for making a solventless silicone pressure sensitive adhesive composition and product
A method is provided for making a heat curable organopolysiloxane composition, such as a pressure sensitive adhesive composition by blending a benzene soluble resinous copolymer in the form of a...
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5324806 |
Free flowing silicone resin powder and method for making
A free flowing silicone powder having a primary particle size in the range of 0.1-200 nm and an aggregate size of 10 nm to 200 microns which is a product formed by spray drying an organic solvent...
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5319040 |
Method for making substantially silanol-free silicone resin powder, product and use
A method for making a substantially silanol-free silicone resin powder having a primary particle size in the range of about 0.1-200 nm and an aggregate particle size of 10 nm to 200 microns is...
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5310867 |
Production of particulate poly(meth)acrylimides
Abstract of the Disclosure: Particles of poly(meth)acrylimides obtainable by reacting a polymer based on C1 -C22 -alkyl esters of acrylic and/or methacrylic acid with ammonia and/or at least one...
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5296532 |
Adhesive compositions containing aqueous copolymer dispersions and acid metal salts or free acids
The invention relates to adhesive compositions for gluing wood containing aqueous vinyl ester graft copolymer dispersions and water-soluble acid metal salts or free acids, in which the adhesive...
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5013816 |
Preparation of particulate polymers
Particulate polymers of aromatic diols I and aromatic dihalogen compound II are prepared by (A) producing a plurality of liquid jets from a solution of the polymer by means of a nozzle, (B) causing...
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4948872 |
Process for spray drying of vinyl chloride homopolymers and copolymers
A process for the preparation of vinyl chloride homopolymer and copolymer pulverulent powders suitable for the preparation of plastisols with improved rheological properties, comprising...
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4757131 |
Production of high-molecular polytetramethylene adipamide pellet
The invention relates to a method for the production of high-molecular polytetramethylene adipamide in a two-step process in which the prepolymer particles obtained in the first process step are...
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4734227 |
Method of making supercritical fluid molecular spray films, powder and fibers
Solid films are deposited, or fine powders formed, by dissolving a solid material into a supercritical fluid solution at an elevated pressure and then rapidly expanding the solution through a...
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4721773 |
Process for producing granular vinyl chloride polymer
A granular vinyl chloride polymer is produced by mixing an aqueous dispersion of a vinyl chloride polymer with an organic liquid being difficulty soluble in water and incapable of dissolving or...
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4628067 |
Microporous polybenzimidazole particulates
Novel microporous particles of polybenzimidazole (PBI) resin, characterized by a reduced bulk density, a surface area of at least 10 m2 /g, a porosity of at least about 10%, and an average pore...
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4581444 |
Flocculation of latex particles and production of thermoplastic resin
A method for flocculating latex particles in a latex is characterized in that a water soluble cationic polymer containing a quaternary ammonium salt in its molecular chain is added as a flocculant...
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4474931 |
Energy-saving process for manufacturing polyethylene and the related manufacturing device
Polyethylene is produced in at least one reactor under a pressure of 800 to 2500 bars and a temperature of 150° to 350° C., and the reaction mixture exiting the reactor through an expansion valve a...
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4423207 |
Process for recovery of solid thermoplastic resins from solutions thereof in organic solvents
An improved process for the continuous separation of a thermoplastic resin from solutions thereof in organic solvents.
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4408040 |
Slurry granulation-steam stripping process for solvent removal
An improved process for the continuous recovery of solid thermoplastic resin from organic solvent solutions using a modified slurry granulation-steam stripping process.
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4408038 |
In-line coagulation process for fluoroelastomer emulsions
In-line continuous coagulation and agglomeration of fluoroelastomers produced by emulsion polymerization permits direct processing of fluoroelastomer latex into mechanical dewatering devices....
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4389522 |
Process for the thermal after-treatment of paste-forming polymers of vinyl chloride
In a process for the thermal after-treatment of paste-forming homo- or copolymers of vinyl chloride, obtained by aqueous emulsion polymerization, followed by spray-drying to produce a spray-dried...
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