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6461732 |
Composites consisting of polyurethane and a thermoplastic material containing an inorganic polar additive
Composites of at least two different plastics materials joined directly to one another, wherein A) is a thermoplastic polymer or a thermoplastic mixture of polymers which contain at least one...
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6420442 |
Flame-proofed polystyrene foamed materials
Flame-retardant foam slabs are based on styrene polymers wherein from 1 to 12% by weight of expanded graphite and also, if desired, from 1 to 12% by weight of a phosphorus compound are present as...
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RE37780 |
Method for the production of substantially open-cell polystyrene sheet
A method of producing a substantially open-cell, expanded polystyrene sheet, comprising the steps of: forming a mixture comprising from 30 to 95% of polystyrene incorporating an aliphatic...
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6403661 |
Volume reducing agents for expanded polystyrene, methods and apparatus for processing expanded polystyrene using the same
A volume reducing agent for processing expanded polystyrene (EPS), containing 65-97 wt % of a first plasticizer having a solubility parameter less than the solubility parameter of the polystyrene;...
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6387974 |
Polymeric adsorbents and method of preparation
Macroporous polymers having selected porosity and permeability characteristics that provide rigid polymer matrices suitable for use in medium and high pressure reversed phase liquid chromatography...
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6340715 |
Foamable composition adapted for delivery from pressurized containers, for producing insulating foams
The invention provides a pressurized container for providing insulating foams including a foamable composition adapted for delivery from pressure cans and on the basis of an aqueous plastic...
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6326408 |
Transformation of expanded polymers
The invention concerns the transformation of expanded polymers, in particular styrene polymers of the polystyrene type and styrene copolymers. More particularly it concerns a method for...
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6310112 |
Hydrogenated vinyl aromatic polymer foams
This invention provides a thermoplastic polymer foam having a density of up to 800 kg/m 3 . The foam is made from a hydrogenated vinyl aromatic polymer that contains pendant cycloaliphatic groups....
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6271278 |
Hydrogel composites and superporous hydrogel composites having fast swelling, high mechanical strength, and superabsorbent properties
A superporous hydrogel composite is formed by polymerizing one or more ethylenically-unsaturated monomers, and a multiolefinic crosslinking agent, in the presence of particles of a disintegrant and...
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6268046 |
Process for producing extruded foam products having polystyrene blends with high levels of CO2 as a blowing agent
In one embodiment, the present invention relates to a process for preparing foam board or sheet including the steps of (A) forming a foamable mixture of (1) a major amount of a styrenic polymer...
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6262193 |
Process for the preparation of polymer particles
Process for the preparation of polyvinylarene polymer particles by suspension polymerization, wherein (a) vinylarene monomers are suspended in an aqueous medium to yield a suspension; (b) the...
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6258868 |
Foam material
Polystyrene-based foam material for the production of for example label material, wherein the foaming has been made with a blowing agent and preferably a nucleating agent, wherein the blowing agent...
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6242540 |
Process for the preparation of polymer particles
Particles of a copolymer of a vinyl arene and a copolymerizable compound containing a polar moiety and a vinyl moiety containing water may be prepared by forming a mixture of monomers and small...
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6239224 |
Method of production of particulate polymers
The invention provides a process for the preparation of a particulate polymer having a mode particle size of at least 200 μm, the improvement comprising the use of substantially monodisperse...
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6235802 |
High surface area adsorbents and method of preparation
A process for the preparation of high surface area, low-swelling macroporous polymeric adsorbents is disclosed. The use of organic sulfonic acids to provide postcrosslinking of macroporous...
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6232357 |
Compositions based on elastomeric polymers of vinylidene fluoride, hexafluoropropene and optionally tetrafluoroethylene, suitable for providing microcellular foamed articles
The present invention relates to compositions based on elastomeric polymers of vinylidene fluoride, hexafluoropropene and optionally tetrafluoroethylene suitable for providing microcellular foamed...
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6225364 |
Foams comprising HFC-134 and a low solubility co-blowing agent and a process for making
Disclosed is an extruded, dimensionally stable, closed cell alkenyl aromatic polymer foam. The foam comprises an alkenyl aromatic polymer material greater than 50 percent by weight of alkenyl...
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6156328 |
Insecticide-containing foam sheet and process for the preparation thereof
A polymer foam sheet having a thickness of at least 0.3 cm, an average cell size of at least 0.1 mm, and at least one pyrethrum compound dispersed in the polymer matrix, wherein the total amount of...
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6153658 |
Process for the preparation of polymer particles
A process for the preparation of expandable polymer particles containing a polymer of a vinylarene monomer and a foaming agent, which process comprises: 1) polymerizing, by suspension...
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6147127 |
High surface area adsorbents and methods of preparation
A process for the preparation of high surface area, low-swelling macroporous polymeric adsorbents is disclosed. The use of organic sulfonic acids to provide postcrosslinking of macroporous...
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6136875 |
High productivity, low fugitive emission foams and foam processes
A blowing agent for foaming polystyrene consisting essentially of at least one low permeability compound (preferably a volatile organic compound (VOC)), at least one low volatility compound...
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6136872 |
Freeze-dried polystyrene-polysiloxane foams
The present invention is a freeze-dried polystyrene-polysiloxane foam having a density of 0.05 to 0.8 grams per cubic centimeter and a void volume of 20 to 99 percent. These foams exhibit good...
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6130265 |
Method for producing expandable styrene polymers containing graphite particles
In a process for preparing expandable styrene polymers containing graphite particles, styrene is polymerized in aqueous suspension in the presence of graphite particles.
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6126825 |
Microporous membrane and process for the production thereof
The present invention relates to a microporous membrane and a process for producing thereof, especially a microporous membrane which can be used for microfiltration, has excellent resistance to...
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6117918 |
Vinyl aromatic polymer coupling and foams
The invention includes a process comprising steps of (1) forming a admixture of (a) a vinyl aromatic polymer and (b) a coupling amount of at least one poly(sulfonyl azide); (2) introducing the...
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6111020 |
Crosslinked foams from blends of ethylene vinyl acetate and ethylene-styrene interpolymers
Ethylene vinyl acetate (EVA)/ethylene-styrene interpolymer (ESI) blends are described that are useful in preparing foams which exhibit improved compression set resistance, dimensional stability and...
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6107356 |
High suction polymeric foam materials
Disclosed are polymeric foam structures suitable for absorbing and storing body fluids such as urine, menses and the like. These liquid storage structures are high suction collapsible polymeric...
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6100306 |
Polymeric microbeads and methods of preparation
The present invention relates to porous crosslinked polymeric microbeads having cavities joined by interconnecting pores wherein at least some of the cavities at the interior of each microbead...
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6093352 |
Process for producing foam by monitoring key process parameters
In one embodiment, the present invention relates to a process for preparing a foam product including the steps of (A) forming a foamable mixture of (1) an alkenyl aromatic polymer and (2) a blowing...
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6093751 |
Method for the production of substantially open-cell polystyrene sheet
A method of producing a substantially open-cell, expanded polystyrene sheet, comprising the steps of: forming a mixture comprising from 30 to 95% of polystyrene incorporating an aliphatic...
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6093781 |
Non-linear styrenic polymer compositions and articles prepared therefrom
Monovinyl aromatic polymer compositions with high melt strength, good flow and good heat properties which are suitable for fast injection molding, blow molding and thermoforming applications,...
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6090479 |
Shape-recoverable resin foamed product
A resin foamed product is formed of a resin, and closed cells dispersed in the resin. The resin with the closed cells therein has a shape-recoverable property at an ambient temperature, a closed...
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6087408 |
Process for the production of polyolefin resin foams
This invention provides a process for preparing a polyolefin resin foam, comprising the step of extruding to a low-pressure zone a melt of polyolefin resin containing a volatile blowing agent...
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6080796 |
Dissolving insecticide in monomer
Insecticides, and particularly termiticides, may be dissolved in monomers polymerized to form foamable polymers, such as polystyrene. The resulting monomer and insecticide may then be polymerized...
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6066680 |
Extrudable composite of polymer and wood flour
An extrusion profile is formed of foamed plastic, which includes a filler of wood flour or wood fiber. The foamed plastic may include polyvinyl chloride, chlorinated polyvinyl chloride or...
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6063826 |
Polyisocyanate based xerogels
Process for making polyisocyanate based xerogels by trimerisation of an organic polyisocyanate in an organic solvent in the presence of a (co)polymer containing an isocyanate-reactive group,...
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6060529 |
Sound-absorbent foam moldings
The invention relates to sound-absorbent foam moldings which have a sound-absorption level according to DIN 52215 of from 30 to 95% in the frequency range from 0.5 to 4 kHz. The foam is an...
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6046245 |
Production of expandable styrene polymers
In a process for producing preferably graphite-containing, expandable styrene polymers by polymerization of styrene in aqueous suspension in the presence of two peroxides which decompose at...
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5994420 |
Foam and process for producing a carbon dioxide blowing agent
The present invention provides a process for producing thermoplastic foam, including: (a) melting a thermoplastic polymer to produce a polymer melt; (b) introducing a carbon dioxide blowing agent...
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5994423 |
Urine absorber, method for producing it, urine absorbing method utilizing it and portable toilet
A urine absorber superior in smell extinguishing and urine absorption properties and in absorption stability is to be prepared. To this end, a polymer of styrene and/or conjugate diene and...
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5977197 |
Compressed, extruded, evacuated open-cell polymer foams and evacuated insulation panels containing them
Disclosed is a compressed, evacuated, open-cell polymer foam, the foam having an open cell content of about 70 percent or more prior to compression, the foam having a thickness of about 40 to about...
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5977194 |
High internal phase emusions and porous materials prepared therefrom
High internal phase emulsions having an internal aqueous phase of greater than 70 percent by volume and an external oil phase comprising a vinyl polymerizable monomer contain a surfactant capable...
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5968427 |
Foamed rubber compositions for pneumatic tires and method of producing the same
A foamed rubber composition for pneumatic tires comprises at least one diene polymer as a rubber ingredient and includes closed cells in a matrix rubber, each of these cells being covered with a...
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5965251 |
Laminated foam sheet and the molded body thereof for vehicle interior
The present invention provides a laminated foam sheet for car interior comprising a foamed core layer of modified polyphenylene ether resin(I) and film layer(s) of thermoplastic resin laminated...
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5962539 |
Process and equipment for drying a polymeric aerogel in the presence of a supercritical fluid
A process for obtaining an aerogel from a polymeric material that is in the form a sol-gel in an organic solvent, by exchanging the organic solvent for a fluid having a critical temperature below a...
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5962545 |
Method of enhancing open cell formation in alkenyl aromatic polymer foams
Disclosed is a method of enhancing open cell formation in making extruded alkenyl aromatic polymer foams of about 30 percent or more open cell content. Open cell formation is enhanced by...
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5955511 |
Manufacturing ultramicrocellular polymer foams at low pressure
The invention disclosed provides a method for producing ultramicrocellular polymer foams at low pressures. A polymer is saturated with a blowing agent at low temperatures and pressures within a...
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5951927 |
Method of making a polymer and wood flour composite extrusion
An extrusion profile is formed of foamed plastic, which includes a filler of wood flour or wood fiber. The foamed plastic may include polyvinyl chloride, chlorinated polyvinyl chloride or...
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5939463 |
High productivity, low fugitive VOC emission foam process
A blowing agent for foaming polystyrene consisting essentially of at least one low permeability volatile organic compound, at least one low volatility non-volatile organic compound and, optionally,...
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5912279 |
Polymer foams containing blocking agents
An improved closed cell polymer foam and foaming agent involving the use of a hydrogen-containing halocarbon blowing agent (e.g., HCFC-22) in combination with an effective amount of a hydrogen bond...
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