| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 521081000 | System contains a mixture of solid polymer or at least one solid polymer and at least one solid polymer-forming system | 26 |
| 20080200572 | Process For The Production of Extruded Sheets Of Expanded Polystyrene - A process for the production of extruded sheets of expanded polystyrene, which only uses expanding agents with low environmental impact, comprising the steps of: a) heating polystyrene or a mixture composed of polystyrene and at least one component selected from the group consisting flame retardants, coloring agents, plasticizers, heat stabilizers and lubricants at a temperature in the range of 180-2500 C thus obtaining a polymer melt, which is subjected to homogenization; b) adding to the polymer melt a mixture of expanding agents comprising carbon dioxide and water; c) homogenizing the polymer melt including said expanding agents; d) homogeneously cooling the polymer melt to a temperature lower than or equal to 1400 C; e) extruding the cooled polymer melt through a die to obtain an expanded polystyrene sheet. | 08-21-2008 |
| 20080293839 | STABILIZED EXTRUDED ALKENYL AROMATIC POLYMER FOAMS AND PROCESSES FOR EXTRUDING STABILIZED ALKENYL AROMATIC POLYMER FOAMS - Prepare an extruded thermoplastic polymer foam having a thermoplastic polymer composition having defined therein multiple cells, the thermoplastic polymer foam containing at least one thermoplastic polymer, a brominated flame retardant, an epoxy containing organic compound and 180 weight parts or less of water extractable cations using a brominated flame retardant, an innocuous stabilizer and a blowing agent containing water. | 11-27-2008 |
| 20090005465 | Concentrate of polyfunctional compounds usable for the preparation of foamed polyester materials - A masterbatch composition comprising an aromatic polyester resin, a polyolefin and a polyfunctional compound selected from the dianhydrides of tetracarboxylic aromatic and/or aliphatic acids and the polyepoxidic compounds, wherein the polyester resin and the polyfunctional compounds are omogeneously dispersed as solids in a matrix formed by the polyolefin, as domains of average particle size less than 800μ. The masterbatch is prepared by milling polyester resins and polyolefin granules to obtain powders having average particle size of less than 200μ, and the powders are therafter homogeneously mixed. | 01-01-2009 |
| 20090018225 | High processing tepmerature foaming polymer composition - A foaming composition includes a polymer having a melting temperature above 250° C., and an organic salt as chemical foaming agent having a decomposition temperature above the melting point of the polymer, where the organic salt is selected from the group of citrate derivatives and tartrate derivatives, or a mixture thereof. | 01-15-2009 |
| 20090069455 | Extruded styrenic resin foam and method for producing the same - The present invention relates to an extruded styrenic resin foam and a method for producing the same, wherein a base resin composing the extruded styrenic resin foam is a styrenic resin mixture of a styrene-(meth)acrylic ester copolymer, or a combination of a styrene-(meth)acrylic ester copolymer and polymethyl methacrylate, and a styrenic resin except the styrene-(meth)acrylic ester copolymer, and the styrenic resin mixture contains a (meth)acrylic ester component at a ratio of 4 to 45% by weight with reference to the styrenic resin mixture. The present invention provides an extruded styrenic resin foam having an apparent density of 20 to 60 kg/m | 03-12-2009 |
| 20090076179 | EXTRUDED PROPYLENE-RESIN COMPOSITE FOAM - The extruded propylene-based resin composite foam ( | 03-19-2009 |
| 20090118385 | Process for Production of Foamed Resin Sheet - The invention provides a process for production of foamed resin sheet which enables satisfactory dispersion of a nucleating agent in a thermoplastic resin and which attains excellent extrusion formability and is excellent in productivity. There is provided a process for production of foamed resin sheet by extruding a thermoplastic resin prepared by incorporating a nucleating agent and a foaming agent consisting of a gas containing at least one of nitrogen and carbon dioxide into a thermoplastic resin, characterized in that the process further comprises incorporating into the thermoplastic resin high molecular weight ester and a wetting agent having a kinematic viscosity coefficient (a kinematic viscosity coefficient at 100° C.; centistokes) of 70 to 2700. | 05-07-2009 |
| 20090163611 | POLYMER BLEND FOR THERMOPLASTIC CELLULAR MATERIALS - The present invention relates to high-temperature resistant, rigid, but flexible and low density foamed cellular material comprised of polyester blend consisting of from about 80 to about 98 weight percent of high viscosity polyethylene terephtalat (I.V.=1.0-1.9 dl/g) and from about 2 to about 20, preferably to about 5, weight percent of polycarbonate with average MW higher than 4000 g/mol. | 06-25-2009 |
| 20090197983 | ARTICLE AND METHOD OF PRODUCING A LOW DENSITY FOAM BLEND OF STYRENIC POLYMER AND POLYOLEFIN - An extruded polymeric foam comprising a styrenic polymer and an olefinic polymer, the olefinic polymer in an amount less than the amount of the styrenic polymer. The styrenic polymer and the olefinic polymer are present as a blend, preferably free of an interpolymer or compatiblizer. The foam has a density below about 36 kg/m | 08-06-2009 |
| 20100292355 | ALKENYL-AROMATIC FOAM HAVING GOOD SURFACE QUALITY, HIGH THERMAL INSULATING PROPERTIES AND LOW DENSITY - Prepare an alkenyl-aromatic foam having good surface quality, high thermal insulating properties and low density using an extrusion method by expanding a foamable polymer composition of an alkenyl-aromatic polymer composition containing less than 20 weight-percent covalently bonded halogens and having a polydispersity of less than 2.5 and a water solubility greater than 0.09 moles per kilogram and 2.2 moles per kilogram or less at 130 degrees Celsius and 101 kilopascals pressure and 0.8-2 moles per kilogram of a blowing agent containing 0.4 moles per kilogram or more of a chlorine-free fluorinated blowing agents and water at a concentration of at least 0.22 moles per kilogram; wherein moles per kilogram are relative to kilograms of alkenyl-aromatic polymer. The resulting foam has a density of 64 kilograms per cubic meter or less and a thermal conductivity of 32 milliwatts per meter-Kelvin or less after 180 days. | 11-18-2010 |
| 20110190405 | POLYSTYRENE/POLYETHYLENE OXIDE COPOLYMER FOR ENHANCING WATER VAPOR PERMEABILITY IN THERMOPLASTIC FOAM - Polymeric foam and polymeric foam products that contain a foamable polymer material, at least one blowing agent, a polystyrene/polyethylene oxide copolymer, and optionally, an infrared attenuating agent, are provided. In exemplary embodiments, the blowing agent includes at least one hydrofluorocarbon blowing agent. The maleic anhydride-styrene copolymer grafted with polyethylene oxide provides a water vapor permeability of 1.1 perm inch or greater in the extruded foam product without detrimentally affecting physical or thermal properties of the product. Additionally, the copolymer of maleic anhydride-styrene grafted with polyethylene oxide has a positive affect on the processability of the blowing agent(s) in the composition by both widening the process window and enhancing the solubility of the blowing agent in the polymer melt. Thus, the polystyrene/polyethylene oxide copolymer present in the inventive composition acts as a cell enlarger, a plasticizer, and a processing aid. A method of forming an extruded foam product is also provided. | 08-04-2011 |
| 20110196054 | POLYSTYRENE/POLYETHYLENE OXIDE COPOLYMER CELL SIZE ENLARGER FOR FOAM - Polymeric foam and polymeric foam products that contain a foamable polymer material, at least one blowing agent, an infrared attenuating agent, and a polystyrene/polyethylene oxide copolymer are provided. In exemplary embodiments, the blowing agent contains an HFC. The maleic anhydride-styrene copolymer grafted with polyethylene oxide increases the cell size of the polymer foam and offsets or even negates the decreased cell size caused by an HFC blowing agent and/or infrared attenuating agents. In addition, the copolymer of maleic anhydride-styrene grafted with polyethylene oxide has a positive affect on the processability of the blowing agent(s) in the composition by both widening the process window and enhancing the solubility of the blowing agent in the polymer melt. Thus, the polystyrene/polyethylene oxide copolymer present in the inventive composition acts as a cell enlarger, a plasticizer, and a processing aid. A method of forming an extruded foam product is also provided. | 08-11-2011 |
| 20110275730 | POLYMER FOAM WITH LOW BROMINE CONTENT - Prepare extruded polymer foam comprising at least 50 weight-percent alkenyl aromatic polymer, a brominated flame retardant providing 0.8 to 1.4 weight percent bromide, 0.05 to 0.5 weight-percent hydrobromic acid scavenger, at least 1.5 weight-percent graphite and less than 0.1 weight-percent C—C and O—O labile organic compounds using a blowing agent composition comprising at least 0.3 weight-parts per 100 weight parts polymer and that consists of blowing agents having an ozone depletion potential of zero and a global warming potential that is less than 1000. | 11-10-2011 |
| 20110319509 | POLYMER COMPOSITES INCORPORATING STEREOCOMPLEXATION - Grafting polymer chains onto filler particles is an established methodology for creating superior polymer composite materials. Stereocomplexation is a non-bonded interaction between polymers that leads to a crystalline form having a higher melting temperature than the non-stereocomplexed form; stereocomplexed polymers often have superior properties compared to their non-stereocomplexed constituents. The present application discloses combining grafted filler particles with matrix materials in which the grafted polymer layer forms a stereocomplex with the polymer matrix. The resulting composite materials have properties which exceed both filled polymer systems and stereocomplexed polymers. | 12-29-2011 |
| 20120172467 | FLAME RETARDANT SYSTEM - The invention relates to a flame retardant comprising
| 07-05-2012 |
| 20120208909 | POLYMER MIXTURES OF POLYSTYRENE HAVING STYRENE BUTADIENE BLOCK COPOLYMERS - The invention relates to a mixture comprising: a) 1 to 40% by weight of a styrene-butadiene-styrene block copolymer having 1.) 60 to 95% by weight of styrene monomer and 2.) 5 to 50% by weight of diene monomer; b) 60 to 99% by weight of styrene polymer; c) 0 to 50% by weight of a filler; and d) 0.1 to 20% by weight of a foaming additive, the sum of the components a) to d) being 100% by weight. | 08-16-2012 |
| 20120252914 | FLAME-PROTECTED POLYMER FOAMS - Flame-retardant polymer foams which comprise, as flame retardant, at least one halogenated polymer, for example brominated polystyrene or styrene-butadiene block copolymer having bromine content in the range from 40 to 80% by weight, or tetrabromobisphenol A compounds (TBBPA), processes for producing these, and also flame-retardant expandable styrene polymers. | 10-04-2012 |
| 20120270959 | BLOWN GRADE SHOWING SUPERIOR STIFFNESS, TRANSPARENCY AND PROCESSING BEHAVIOUR - Extrusion blown film comprising a polypropylene composition, said polypropylene composition comprises a random propylene copolymer, a high melt strength polypropylene, and optionally a clarifier, wherein • the random propylene copolymer comprises units derived from propylene and at least another C | 10-25-2012 |
| 20120283345 | HEAT-RESISTANT AND FLAME-RETARDANT EXTRUDED FOAM MADE OF STYRENE COPOLYMERS - The invention is directed to extruded foam based on thermoplastic polymers. The foam contains at least one styrene copolymer which contains copolymerized maleic anhydride units or copolymerized maleimide units, and optionally styrene-acrylonitrile copolymers (SAN), and thermoplastic polymers and at least one halogen-containing polymer as flame retardant, and at least one flame retardant synergist selected from antimony trioxide and dicumyl. The invention also relates to a process for producing the foam with introducing carbon dioxide as blowing agent, and acetone as coblowing agent; into the polymer melt in order to form a foamable melt, and extruding the foamable melt into a region of relatively low pressure with foaming to give the extruded foam. The invention also relates to the use of said foam as insulation material and as structural foam. | 11-08-2012 |
| 20120295994 | BLOWNFILM GRADE SHOWING SUPERIOR STIFFNESS, TRANSPARENCY AND PROCESSING BEHAVIOUR - Extrusion blown film comprising a polypropylene composition, said polypropylene composition comprises a random propylene copolymer, a high melt strength polypropylene, a polypropylene and optionally a clarifier, wherein • the random propylene copolymer comprises units derived from propylene and at least another C | 11-22-2012 |
| 20130178547 | Process for Recovering Brominated Styrene-Butadiene from a Bromination Reaction Solution - Brominated styrene-butadiene copolymers are recovered from solutions in a halogenated solvent by an anti-solvent precipitation process. The precipitation process is performed by adding the anti-solvent to the brominated styrene-butadiene copolymer solution. By performing the precipitation using this specific order of addition, a denser product is obtained that is easier to dry. The recovered product shows a reduced tendency to act as a nucleating agent when it is used as a flame retardant additive in an extrusion foaming process. | 07-11-2013 |
| 20130253082 | MULTIFUNCTIONAL BIOCOMPOSITE ADDITIVE COMPOSITIONS AND METHODS - Biocomposite compositions and compositions, which include dried distillers solubles, and which can be used in making biocomposite compositions are described. Methods for preparing the compositions are also described. | 09-26-2013 |
| 20140256835 | Polyetherimide/ poly(biphenyl ether sulfone) foam materials - A foam material made from a composition (C) comprising a polyetherimide (PEI) and a poly(biphenyl ether sulfone) (P2). | 09-11-2014 |
| 20150045464 | METHOD FOR PRODUCING RESIN FOAM, AND RESIN FOAM - A method for producing resin foam including: melting a resin composition including a polyolefin resin and a thermoplastic elastomer; impregnating the molten resin composition with a material that is a gas at normal temperature and normal pressure, in a supercritical state, under a condition in which the supercritical state of the material is maintained; foaming the resin composition impregnated with the material by arranging the resin composition under a condition in which the supercritical state of the material is not maintained; and hot-pressing the foamed resin composition. | 02-12-2015 |
| 20150057382 | RESIN COMPOSITION FOAM AND METHOD FOR PRODUCING THE SAME - The present invention relates to a method for producing a resin composition foam comprising dissolving a supercritical fluid in a resin composition containing polytetrafluoroethylene and another resin other than polytetrafluoroethylene at a temperature equal to or higher than a glass transition point of the other resin, then foaming the resin composition by removing the supercritical fluid at a temperature lower than a temperature obtained by adding 15° C. to a thermal deformation starting temperature of the other resin, and subsequently cooling. In addition, the present invention relates to a resin composition foam, wherein the resin composition foam has a pore size of less than 50 μm, and the resin composition foam is any one of an open cell, a closed cell and a monolith type. | 02-26-2015 |
| 20160060417 | METHOD FOR PRODUCING EXPANDABLE GRANULATES CONTAINING POLYLACTIC ACID - The invention relates to a process for producing expandable pelletized material which comprises polylactic acid which comprises the following steps:
| 03-03-2016 |
