| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 521060000 | Adding expanding agent subsequent to solid polymer formation | 22 |
| 20110196053 | HALOGEN-FREE, PHOSPHORUS-CONTAINING FLAME-RETARDANT POLYMER FOAMS - A polymer foam with density in the range from 5 to 120 kg/m | 08-11-2011 |
| 20110281964 | Process for preparing foamable polymer compositions, process for preparing foamed polymer compositions therefrom, foamed polymer compositions and adhesive tape therewith - The invention relates to a process for preparing a foamed polymer composition using expandable hollow microbeads,
| 11-17-2011 |
| 20090030096 | METHOD OF PRODUCING EXPANDABLE POLYSTYRENE BEADS WHICH HAVE EXCELLENT HEAT INSULATION PROPERTIES - An expandable polystyrene bead production method, which is a two-step process, is disclosed. The method includes obtaining suspendable, homogenous micropellets from a mixed composition prepared by mixing graphite particles with a styrene-based resin and extruding the composition, and carrying out seed polymerization by suspending graphite-containing micropellets in water and adding a styrene-based monomer and an aromatic hydrocarbon having 6 to 10 carbon atoms, and impregnation by adding a blowing agent. The produced expandable polystyrene beads, which contain graphite particles, are considerably low in thermal conductivity. In addition, the expandable polystyrene beads exhibit a little change in the thermal conductivity over time due to the use of the graphite particles, so that the heat insulation property can be sustained for an extended period of time. | 01-29-2009 |
| 20100029793 | METHODS OF MANUFACTURE OF POLYLACTIC ACID FOAMS - A method of forming a composition of expanded polylactic acid (PLA) resin beads comprising impregnating PLA resin beads with CO | 02-04-2010 |
| 20100036007 | FOAM OF POLYMERS - The disclosure pertains to foam of polymers, which can be made by a method for making a polymer foam comprising vacuum or gas-filled compartments by making a solution of 1 to 20% by weight of a polymer in a solvent; adding particles to the a polymer solution; solidifying the polymer wherein the particles are contained by heating, cooling, ageing, or coagulating to obtain a polymer foam or matrix comprising the particles, and obtaining from the polymer matrix the polymer foam containing the compartments; and optionally washing, drying, and/or heating the polymer foam. | 02-11-2010 |
| 20090030095 | Polystyrene compositions and methods of making and using same - Disclosed is a method comprising contacting polystyrene with carbon black and expandable microspheres to form a composition, and expanding the microspheres to foam the composition. Also disclosed is a foamed composition comprising polystyrene, carbon black, and expandable microspheres. The inventive polystyrene compositions have improved mechanical properties. | 01-29-2009 |
| 20090186954 | EXPANDABLE POLYETHYLENE RESIN PARTICLE AND METHOD FOR PRODUCTION THEREOF - Disclosed is a method for production of an expandable polyethylene resin particle having a foaming agent impregnated therein, which comprises polymerizing a styrene monomer or a monomer mixture containing a styrene monomer onto a nuclear particle comprising an ethylene-vinyl acetate copolymer and a linear low-density polyethylene. | 07-23-2009 |
| 20090197982 | EXPANDED POLYHYDROXYALKANOATE RESIN BEAD, MOLDED OBJECT THEREOF, AND PROCESS FOR PRODUCING THE EXPANDED RESIN BEAD - An object of the present invention is to provide expanded polyhydroxyalkanoate resin beads which are satisfactory and have biodegradability, the molded product thereof, and process for producing the expanded resin beads. The object can be achieved by expanded poly(3-hydroxyalkaonate) (abbreviated to P3HA) resin beads obtained from a P3HA resin composition comprising: a copolymer which comprises repeating units of one or more kinds represented by the formula (1): [—O—CHR—CH | 08-06-2009 |
| 20090247654 | POLYMERIC FOAMS WITH NANOCELLULAR MORPHOLOGY AND METHODS FOR MAKING THEM - A foamable polymeric composition can comprise a polymer, a blowing agent cage material, and a blowing agent. The blowing agent cage material is selected from the group consisting of zeolite imidazolate framework, metal organic framework, carbon cage structure, and combinations comprising at least one of the foregoing. In one embodiment, the composition can be formed by mixing the polymer with the blowing agent cage material to form a mixture, introducing a blowing agent to the mixture, and forming the mixture into pellets. | 10-01-2009 |
| 20090036559 | POROUS MONODISPERSED PARTICLES AND METHOD FOR PRODUCTION THEREOF, AND USE THEREOF - To provide porous monodispersed particles obtained by preparing, as seed particles, poly(methyl methacrylate) particles or acrylic resin particles comprising 70% by mass or more of methyl methacrylate as a copolymerization component, swelling the seed particles 20 to 80 times the size of the original seed particles by mass using a swelling solution comprising an oil-soluble polymerization initiator and a monomer mixture containing 70% by mass or more of methyl methacrylate and 3 to 8% by mass of divinylbenzene, and polymerizing the monomers. The particles are porous particles with a diameter of the order of micrometers and a narrow particle-size distribution and are monodispersed. Colored monodispersed particles obtained by agglomerating a pigment in the porous monodispersed particles are monodispersed and spherical, and contain a large amount of pigment therein. | 02-05-2009 |
| 20100222442 | FOAMS BASED ON THERMOPLASTIC POLYURETHANES - Expandable thermoplastic polyurethane comprising blowing agent, wherein the Shore hardness of the thermoplastic polyurethane is from A 44 to A 84. | 09-02-2010 |
| 20110251296 | PRE-EXPANDED PARTICLES, PROCESS FOR PRODUCING THE SAME, AND EXPANDED MOLDED ARTICLE - A process for producing pre-expanded particles, comprising the steps of:
| 10-13-2011 |
| 20110009508 | EXPANDABLE POLYSTYRENE RESIN PARTICLES, METHOD FOR PRODUCTION THEREOF, AND MOLDED FOAM PRODUCT - There are provided expandable polystyrene resin particles formed by granulating a polystyrene resin containing an expanding agent, wherein the weight-average molecular weight Mw of the polystyrene resin is in the range of 120,000 to 270,000, and the expanding agent contains, as an essential component, pentane at a proportion of 3 to 8 parts by mass based on 100 parts by mass of the polystyrene resin, while the composition of the pentane is in the range of isopentane:normal pentane=10:90 to 80:20 by mass ratio. These expandable polystyrene resin particles can utilize a recycled raw material, and can produce a molded foam product having sufficient mechanical strength, while the expandable polystyrene resin particles have a long bead life and excellent low pressure moldability. | 01-13-2011 |
| 20100130628 | AROMATIC POLYIMIDE AND PROCESS FOR PRODUCTION THEREOF - Disclosed is an aromatic polyimide having extremely high stiffness and extremely high gas barrier property, which is prepared from a tetracarboxylic acid component consisting essentially of 25 mol % to 97 mol % of 3,3′,4,4′-biphenyltetracarboxylic acid and 75 mol % to 3 mol % of 4,4′-oxydiphthalic acid based on 100 mol % of the total amount of the tetracarboxylic acid component, and a diamine component consisting essentially of p-phenylenediamine. | 05-27-2010 |
| 20120022175 | EXPANDABLE POLYSTYRENE RESIN PARTICLES AND METHOD FOR PRODUCING THE SAME - [Object] The object of the present invention is to provide a molded foam product in which a flame retardant having no accumulating property in a living body and satisfactory handling property during the production process is dissolved in a plasticizer so that the flame retardant can be uniformly impregnated into resin particles, and which shows excellent heat-fusibility between the particles during molding without resulting in uneven cell density upon expanding, and has excellent flame retardancy and heat resistance. | 01-26-2012 |
| 20120309859 | INTERPOLYMER RESIN PARTICLES - Interpolymer resin particles that include from about 20% to about 60% by weight based on the weight of the particles of uncross-linked polyolefin resin particles having a VICAT softening temperature greater than 85° C. and from about 40% to about 80% by weight based on the weight of the interpolymer particles of polymerized vinyl aromatic monomer composition particles that have been polymerized in the uncross-linked polyolefin resin particles to form an interpenetrating network of polyolefin resin particles and polystyrene particles. The interpolymer resin particles have a gel content ranging from about 0 to about 1.5% by weight based on the weight of the interpolymer resin particles, a VICAT softening temperature ranging from about 90° C. to about 115° C., and a melt index value ranging from about 0.2 to about 35.0 g/10 minutes (Condition G). | 12-06-2012 |
| 20120214885 | FOAMABLE POLYSTYRENE RESIN PARTICLES AND PROCESS FOR PRODUCTION THEREOF, POLYSTYRENE RESIN PREFOAMED PARTICLES, POLYSTYRENE RESIN FOAM-MOLDED ARTICLE, HEAT-INSULATING MATERIAL FOR BUILDING MATERIAL, BANKING MEMBER, AND VEHICLE INTERIOR MATERIAL - In foamable polystyrene resin particles that are obtained by granulating a polystyrene resin containing a flame retardant and a foaming agent, the flame retardant has a bromine atom in a molecule, contains less than 70% by mass of bromine, has a benzene ring in a molecule, and has a 5% by mass decomposition temperature in a range of from 200° C. to 300° C., and a ratio (B/A) between (A) the amount of the flame retardant contained in the total foamable polystyrene resin particles and (B) the amount of the flame retardant contained in the surface of the resin particles is in a range of from 0.8 to 1.2. By pre-foaming the foamable polystyrene resin particles and then foaming the particles in a mold, a polystyrene resin foam-molded article having flame retardancy is obtained. According to the invention, it is possible to provide a the polystyrene resin foam-molded article that uses a flame retardant which is highly safe for the environment and living organisms, has a sufficient flame-retarding performance, and is excellent in mechanical strength, moldability, and exterior. | 08-23-2012 |
| 20080300328 | Process for the Preparation of Expandable Polystyrene Beads - Expandable monovinylidene aromatic polymer, e.g., polystyrene, beads are prepared by a suspension polymerization process comprising polymerizing monovinylidene aromatic monomer, e.g., styrene, under suspension polymerization conditions with, based on the weight of the monomer:
| 12-04-2008 |
| 20110046249 | COMPOSITIONS OF EXPANDABLE VINYL AROMATIC POLYMERS WITH AN IMPROVED THERMAL INSULATION CAPACITY, PROCESS FOR THEIR PREPARATION AND EXPANDED ARTICLES OBTAINED THEREFROM - Expandable vinyl aromatic polymers which comprise: a matrix obtained by polymerizing 50-100% by weight of one or more vinyl aromatic monomers and 0-50% by weight of at least one copolymer izable monomer; 1-10% by weight, calculated with respect to the polymer (a), of an expanding agent englobed in the polymeric matrix; 0.05-25% by weight, calculated with respect to the polymer (a), of a filler comprising coke with a surface area, measured according to ASTM D-3037/89, ranging from 5 to 50 m | 02-24-2011 |
| 20110218257 | PARTICULATE, EXPANDABLE POLYMER, METHOD FOR PRODUCING PARTICULATE EXPANDABLE POLYMER, AS WELL AS A SPECIAL USE OF THE OBTAINED FOAM MATERIAL - The present invention relates to a particulate, expandable polymer, for example polystyrene (EPS) or polylactic acid (PLA) or a combination thereof, which can be processed to form a foam having a fine cell structure and a low density, and which contains a thermal insulation value-increasing material so as to increase the thermal insulation value thereof The present invention further relates to a method for producing such particulate, expandable polymer, as well as to a foam material based on such a polymer. | 09-08-2011 |
| 20120329892 | FOAMS BASED ON THERMOPLASTIC POLYURETHANES - Expandable thermoplastic polyurethane comprising blowing agent, wherein the Shore hardness of the thermoplastic polyurethane is from A 44 to A 84. | 12-27-2012 |
| 20110319507 | FLAME-RETARDED FOAMABLE STYRENE-BASED RESIN BEADS AND PROCESS FOR PRODUCING THE SAME - Flame-retarded foamable styrene-based resin beads and a process for producing the resin beads are provided in which a combination of two organic bromine-containing compounds is used in order to accomplish a high flame retardancy level with a small amount of addition and decreased level of residual monomer. The flame-retarded foamable resin beads comprises a blowing agent added to resin beads by impregnating with the blowing agent during or after polymerization. The beads are produced by suspension polymerizing a monomer composition containing 0.5 to 5.0 parts by weight per 100 parts by weight of the monomer of a bromine-containing flame retardant comprising (a) an organic bromine-containing compound having 2,3-dibromo-2-alkylpropyl group and (b) an organic bromine-containing compound having a bromine content greater than 50 wt % and free of any bromine atom attached to a tertiary carbon atom. | 12-29-2011 |
