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| Number | Title | Issue Date |
| 7338980 | Method and apparatus for mixing a high-viscosity material into a gas A piston pump has a piston and cylinder. A gas is supplied into the cylinder during and/or after a suction stroke of the piston pump, and a high-viscosity material is supplied into the cylinder after the suction stroke. A discharge stroke of the piston pump is effec... | 03/04/2008 |
| 7323190 | Cell delivery system comprising a fibrous matrix and cells Cell storage and delivery systems and methods for storing and delivering viable cells to a mammal are disclosed. The cell storage and delivery systems include a biodegradable and/or bioabsorbable fibrous matrix physically associated with viable cells to contain and ... | 01/29/2008 |
| 7229580 | Preparation of porous poly(aryl ether) articles and use thereof The preparation and use of novel porous poly(aryl ether) articles is disclosed. The porous articles are prepared from blends of poly(aryl ether) polymers with polyimides by selectively decomposing the polyimide phase. The preferred reagents used to decompose the pol... | 06/12/2007 |
| 7160929 | Nanocomposite and molecular-composite polymer foams and method for their production U.S. Pat. No. 6,232,354 issued May 15, 2001 describes an environmentally friendly and commercially practicable process for the production of microcellular polymer foams from amorphous, semi-crystalline and crystalline polymers which involves consolidating the polyme... | 01/09/2007 |
| 7144925 | Fire resistance acoustic foam A macrocellular foam is described having improved cell size and Fire-test-response Characteristics, among other features, which is obtained by selecting a particle size less than 1 micron for the flame retardant adjuvant. The inventors found that the amount of fire ... | 12/05/2006 |
| 7018700 | Acoustic absorption polymer foam having improved thermal insulating performance Polymer foams having a good balance of high sound absorption, low thermal conductivity and generally low water absorption are disclosed which are obtainable by perforating (i.e., hole punching) a polymer foam having a moderately large cell size (1.5 mm to 4 mm) and ... | 03/28/2006 |
| 6949588 | Perforated foams Thermoplastic polymer foams having sound deadening properties satisfactory for demanding applications are provided which have mechanical strength, which are economical to manufacture, and which are hydrolytically stable. Methods of preparing these foams are also pro... | 09/27/2005 |
| 6383424 | Method for producing foams made of polymers or polymer mixtures and moulded articles made from said foams A method using a two part process line is proposed for manufacturing foams from polymers or polymer mixtures useful for making molded bodies. The process line is divided into at least one first part and one second part. The polymer or polymer mixture is m... | 05/07/2002 |
| 6326413 | Process and apparatus for producing plastics and polymeric foam A process and apparatus for producing polyurethane foam, comprising bringing together under pressure one or more foam components and a gaseous CO2 auxiliary blowing agent and discharging the combination through a permeable discharge head in the... | 12/04/2001 |
| 6127440 | Plastics foam and method of manufacturing same A method of producing an extruded plastics foam of enhanced physical strength includes intimately mixing a blowing agent incorporation CO2, the major portion of which is a natural gas, in a plastics resin melt to form a homogenous resin mix, an... | 10/03/2000 |
| 6110986 | Propylene-based polymer composition and foamed article thereof A propylene-based polymer composition obtained by polymerizing a propylene monomer in the presence of a stereoregular olefin polymerization catalyst system in the first stage to produce a crystalline propylene-based polymer(A) having an intrinsic viscosit... | 08/29/2000 |
| 6005014 | Apparatus and process for producing polymeric foam An apparatus and process for producing polymeric foam, wherein reactive foam components and a low-boiling point frothing agent are brought together, sufficient pressure is applied to maintain the frothing agent in a liquid state and the mixture is passed ... | 12/21/1999 |
| 5853848 | Biodegradable foamed product from a starch graft copolymer The biodegradable foamed product is made from a starch graft copolymer with an add-on level of about 5 to about 60%.... | 12/29/1998 |
| 5844009 | Cross-linked low-density polymer foam The invention relates to physically-blown low density polyethylene (LDPE) foams that are blends of an LDPE resin and a silane-grafted single-site initiated polyolefin resin. The LDPE resin generally has a density between about 0.91 and about 0.93 g/cm | 12/01/1998 |
| 5834527 | Process for the manufacture of polyurethane foam moldings A process for the manufacture of polyurethane foam moldings is described wherein carbon dioxide physically dissolved under pressure is used as the blowing agent and a pressure is maintained in the mold cavity during the introduction of the polyurethane re... | 11/10/1998 |
| 5753717 | Plastics foam and method of manufacturing same A method of producing an extruded plastics foam of enhanced physical strength includes intimately mixing a blowing agent incorporation CO2, the major portion of which is a natural gas, in a plastics resin melt to form a homogenous resin mix, an... | 05/19/1998 |
| 5635562 | Expandable vibration damping materials The present invention relates to relatively inexpensive multi-purpose expandable vibration damping material compositions particularly useful in constrained layer applications. The composition essentially includes an elastomeric polymer, plasticizer, therm... | 06/03/1997 |
| 5618853 | Molded structure comprising a thermoplastic, process for its production and its use A molded structure 1 produced by extrusion, such as an expanded plastic foam, a sheet, a profile or the like, contains at least 10% by volume of open cells 2, 4 which have a polyhedron-like shape and are adjacent to one another. A higher temperature durin... | 04/08/1997 |
| 5616625 | Reactive hot melt foam A process for foaming polyurethane reactive hot melt adhesive comprising the steps of: a) melting a reactive polyurethane adhesive containing 0.05 to 0.5% by weight of a 2,2'dimorpholinodiethyl ether or di(2,6-dimethylmorpholinodiethyl)ether catalyst in a... | 04/01/1997 |
| 5543438 | Plastic foam material composed of a polyolefin based resin composition and method for making same A plastic foam material composed of a polyolefin based resin composition, consists essentially of specified amounts of polypropylene based resins and polyethylene based resins, included from about 20 to about 65 weight percent of a cross linked portion. T... | 08/06/1996 |
| 5475037 | Amorphous polyester foam A low density foam having a density less than 15 pounds per cubic foot (240 kg/m3) is formed from an amorphous polyethylene terephthalate polymer. An expandable resin composition is also disclosed, comprising an amorphous polyethylene terephtha... | 12/12/1995 |
| 5380767 | Foamable gel with an aqueous blowing agent expandable to form a unimodal styrenic polymer foam structure and a process for making the foam structure Disclosed is a foamable styrenic polymer gel containing an aqueous blowing agent capable of forming a closed-cell, unimodal foam structure. The gel composes in admixture the flowable melt of a polymer composition having greater than 50 percent by weight o... | 01/10/1995 |
| 5225450 | Unfoamed foil suitable as an adhesive The invention is directed to an unfoamed foil of at least one thermoplastic resin, said foil being capable of serving as an adhesive when softened and having included therein at least one blowing agent, and to the use thereof in preparing laminates.... | 07/06/1993 |
| 5068256 | Bubble-containing ethylene/-olefin rubber In accordance with the present invention, there is provided a bubble-containing ehtylene/-olefin rubber excellent in kneadability, characterized in that the ethylene/-olefin rubber prepared by copolymerization of 50-95 mol% of ethylene, 5-50... | 11/26/1991 |
| 4714716 | Lightly crosslinked linear olefinic polymer foams and process for making A substantially closed-celled linear polyolefin foam is made by melt processing under pressure a linear polyolefin together with a volatile blowing agent and a crosslinking agent and then expanding the polymer. Suitable crosslinking agents, including azid... | 12/22/1987 |
| 4656199 | Process for the production of matte, non-blocking, thin-walled molded articles from linear thermoplastic polyurethane elasotomers containing polyadducts and their use The present invention is directed to a process for the production of matte, non-blocking, thin-walled molded articles, films or tubes from polyurethane elastomers prepared from high molecular weight polyols which contain dispersed polyadducts based on pol... | 04/07/1987 |
| 4604426 | Better foamable styrene and other olefin polymer compositions Excellently properties, thermoplastic compositions well adapted for conversion by conventional melt-processing extrusion and other ordinary fabrication techniques into very good quality, lightly cross-linked, thermocollapse-resistant, closed-cell plastic ... | 08/05/1986 |
| 4525487 | Method for making polyester resin foam by spraying A spray method for making cured polyester resin foam is provided using a liquid unsaturated polyester resin, a sulfonyl hydrazide, an effective amount of a promoter, an effective amountof a catalyst and 0.005-3 parts quaternary ammonium salt.... | 06/25/1985 |
| 4425440 | Flame retardant thermally insulating material The invention provides a flame retardant thermally insulating material which comprises cellular polymer particles and fly ash bound into a coherent mass by a dried synthetic polymer latex binder, and a process for providing between at least two spaced-apa... | 01/10/1984 |
| 4423161 | Apparatus and method for dispensing foamable compositions Pressure vessels are disclosed for containing a foamable mixture of liquid and a blowing agent for incrementally or continuously dispensing a foam of constant foam-volume ratio. Liquid compositions having coating or polymeric solids are capable of being f... | 12/27/1983 |
| 4399085 | Process of producing fibre-reinforced shaped articles A process of producing a fibre-reinforced shaped article comprising extruding a composition comprising a settable fluid as a carrier for fibres at least 5 mm in length through a die so that relaxation of the fibres causes the extrudate to expand to form a... | 08/16/1983 |
| 4337318 | Process for the total pre-expansion of polyurethane foam The present invention provides a method of utilizing polyurethane foam for insulation purposes in existing walls and other areas without expanding the existing structure. Conventional polyurethane foam post-expands, causing pressures as high as 6 p.s.i., ... | 06/29/1982 |
| 4312960 | Foam crystallization of condensation polymers A normally amorphous condensation polymer is crystallized by foaming it with a chemical blowing agent at a temperature above the softening point of the polymer, extruding the molten polymer to form a solid foam and maintaining the foam at a temperature ab... | 01/26/1982 |
| 4255371 | Process for producing olefinic resin foams In a process for producing an olefinic resin foam which comprises the steps of forming a composition comprising an olefinic resin, a chemical blowing agent and a crosslinking agent into an unfoamed sheet-like or rod-like shaped article and foaming it by h... | 03/10/1981 |
| 4242467 | Urea derivatives and use as polyurethane catalysts Covers compounds of the formula: ##STR1## where R and R1, when taken individually are lower alkyl or when taken together represent ##STR2## z is an integer of 2-6 and X is O or N--R2 where R2 is lower alkyl.... | 12/30/1980 |
| 4178411 | Fibre expanded reinforced materials and their process of manufacture A very low density material is produced by extruding a composition comprising a settable fluid containing long resilient fibres through a narrow die under conditions which cause the extrudate to expand to form an open fibrous structure as it leaves the di... | 12/11/1979 |
| 4146510 | Flake- or sliver-like porous structure of polymeric material and process of producing same, and process of producing sheet-like structure therefrom Flake- or sliver-like porous structures of a polymeric material heavily loaded with a finely divided inorganic substance are prepared by spurting a mixture of the polymeric and finely divided inorganic components in a solvent. The products have many fine,... | 03/27/1979 |
| 4107105 | Cellular urea-formaldehyde resin and method of preparing the same An aqueous solution of urea-formaldehyde prepolymer has improved storage life, and cellular urea-formaldehyde foam prepared by discharging the solution, a curing catalyst, and compressed air into the atmosphere develops fewer shrinkage cracks and is stron... | 08/15/1978 |
| 4073733 | PVA membrane and method for preparing the same A polyvinyl alcohol semi-permeable membrane is prepared which has micropores with an average diameter of 0.02 to 2 microns as defined by the interpore partition walls having thicknesses in the range of 50 to 5000 A and which is characterized by substantia... | 02/14/1978 |
| 4041115 | Continuous process for preparing particulate microporous, open-celled polymer structures in a screw-type extruder A continuous process for preparing particulate microporous, open-celled polymer structures in a co-rotating twin-screw processor comprising agitating normally solid organic polymer and chlorofluorocarbon in the melt zone of said processor, cooling the res... | 08/09/1977 |
