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| Number | Title | Issue Date |
| 7435761 | Microporous polyethylene film and method of producing the same Disclosed is a microporous polyethylene film for a battery separator and a method of producing the same. The microporous polyethylene film comprises a resin mixture, which includes 100 parts by weight of composition containing 20-50 wt % polyethylene with a weight a... | 10/14/2008 |
| 7423070 | Surface-modified base matrices The present invention is a surface-modified base matrix comprised of a porous polymeric base matrix onto which branched hydrophilic polyhydroxy-functional polymers have been covalently attached, wherein the polyhydroxy-functional polymers are hyperbranched polymers ... | 09/09/2008 |
| 7361694 | Durable foam of olefin polymers, methods of making foam and articles prepared from same Olefin polymer-based, durable, open-cell foam compositions, structures and articles derived from same; methods for preparation of such foams; and use of the dry durable foams in various applications are disclosed. Further described is use of the foams and structures... | 04/22/2008 |
| 7338698 | Homogeneously branched ethylene polymer carpet, carpet backing and method for making same The present invention pertains to carpet and methods of making carpet. In one aspect, the carpet includes (a) a primary backing which has a face and a back surface, (b) a plurality of fibers attached to the primary backing and extending from the face of the primary ... | 03/04/2008 |
| 7332531 | Microporous high density polyethylene film Disclosed is a microporous high density polyethylene film for a battery separator and a method of producing the same. The microporous high density polyethylene film includes high density polyethylene with a weight average molecular weight of 2×105-5×10 | 02/19/2008 |
| 7329360 | Oil recovery and environmental cleanup compositions comprising a polyethylene/vinyl acetate copolymer This invention relates to improvements in products and processes for cleaning up oil, chemical, or other hydrocarbon spills, and cleaning up the environment where such spills have occurred. In one aspect of the invention, there is provided an adsorbent polymeric com... | 02/12/2008 |
| 7318713 | Polymer processing systems including screws Injection molding and blow molding systems that include screws having low L:D ratios are provided. The systems are capable of producing microcellular polymeric materials. In some cases, the systems may be formed by retrofitting conventional polymer processing system... | 01/15/2008 |
| 7302992 | Fugitive pattern for casting A fugitive pattern for making a shell mold for investment casting a metal or alloy comprises a substantially random interpolymer and a low molecular weight polymer in proportions to provide a fugitive pattern having a combination of properties suitable for use in ma... | 12/04/2007 |
| 7302991 | Fugitive pattern for casting A fugitive pattern for making a shell mold for investment casting a metal or alloy comprises a substantially random interpolymer and a low molecular weight polymer in proportions to provide a fugitive pattern having a combination of properties suitable for use in ma... | 12/04/2007 |
| 7300960 | Expandable polypropylene resin particle and molded object obtained therefrom by in-mold molding A specific relationship must be met in case of: (a) a structural unit derived from propylene is present in 100 to 85 mole %, and a structural unit derived from ethylene and/or alpha-olefin with 4 to 20 carbons is present in 0 to 15... | 11/27/2007 |
| 7300612 | Hollow strandfoam and preparation thereof Prepare a foam structure that includes hollow coalesced foam strands and, optionally, solid coalesced foam strands using an extrusion die block equipped with apertures that promote forming the hollow strands and, optionally, the solid foam strands. ... | 11/27/2007 |
| 7264036 | Fugitive pattern for casting A fugitive pattern for making a shell mold for investment casting a metal or alloy comprises a substantially random interpolymer and a low molecular weight polymer in proportions to provide a fugitive pattern having a combination of properties suitable for use in ma... | 09/04/2007 |
| 7247657 | Expandable compositions and methods of making and using the compositions A novel expandable composition and method for using the same are disclosed. The disclosed method relates to using the composition, for example, as an automotive cavity sealant. The inventive composition normally is a combination of at least one base polymer, at leas... | 07/24/2007 |
| 7238765 | High density polyethylene and insulation compositions for wire and cable High density polyethylene having reduced melt elasticity and a reduced level of highly short-chain branched polymer molecules and wire and cable insulation compositions based thereon having improved strippability and oxidative stability are provided. ... | 07/03/2007 |
| 7201762 | Vascular embolization with an expansible implant A vascular implant formed of a compressible foam material has a compressed configuration from which it is expansible into a configuration substantially conforming to the shape and size of a vascular site to be embolized. Preferably, the implant is formed of a hydrop... | 04/10/2007 |
| 7201958 | Polymer foam plank with densified skin, method and apparatus for producing a densified skin on a foam plank A method and apparatus for making a densified skin polymer foam plank comprising providing a polymer foam having a plurality of cells and heating an outer surface of the foam at a heating station. The heating step collapses and melts the cells adjacent the outer sur... | 04/10/2007 |
| 7198844 | Microporous polymeric resin containing stabilizers and method for making thereof Microporous particles for stabilizing thermoplastic compositions comprising comprising a stabilizer are provided. Each of the porous microparticles has a plurality of preformed pores into which the stabilizing agent is loaded and from which the stabilizing is subseq... | 04/03/2007 |
| 7195815 | Process for producing foamed body of thermoplastic resin, mold for forming same and foamed body of thermoplastic resin The invention provides a foamed body of thermoplastic resin having a high expansion ratio, desired shape and cells of desired diameter, especially fine cells. The foamed body of thermoplastic resin is produced by filling the thermoplastic resin containing a foaming ... | 03/27/2007 |
| 7183332 | Process for the preparation of porous polymers and polymers obtainable thereof A process for preparing porous olefin polymers comprising bringing into contact in a polymerization reactor, at a temperature T1, one or more olefins of the formula (I) CH2═CHR1, R1 being hydrogen, a C1–C | 02/27/2007 |
| 7179487 | Hydrogels of water soluble polymers crosslinked by protein domains A stimuli-responsive, hybrid hydrogel wherein the bulk of the polymer is made up of relatively inexpensive water soluble polymer strands crosslinked by protein domains. The responsiveness of the gel is controlled or modulated by the protein component. The phy... | 02/20/2007 |
| 7173069 | Polyolefin foams and methods of making the same A non-crosslinked polyolefin foam comprises a plastics component and a blowing agent. The plastics component comprises a first constituent and a second constituent. The first constituent is a Ziegler-Natta catalyzed linear low density polyolefin and the second const... | 02/06/2007 |
| 7166248 | Reduced VOC emission alkenyl aromatic polymer foams and processes A method for producing an alkenyl aromatic polymer foam structure that comprises melting at least one alkenyl aromatic polymer resin. An effective amount of blowing agent mixture is dissolved in the at least one alkenyl aromatic polymer. The blowing agent mixture co... | 01/23/2007 |
| 7163741 | Adhesive for bonding to low surface energy surfaces A novel polymodal asymmetric elastomeric block copolymer and a pressure sensitive adhesive, tape and adhesive backed article made therefrom, such as a polymer foam article having a substantially smooth surface prepared by melt-mixing a polymer composition and a plur... | 01/16/2007 |
| 7141168 | Porous polyolefin membrane The purpose of the invention is to provide a porous polyolefin membrane consistent with a simple composition that may be characterized by a small pore diameter and a high porosity by simplifying the manufacturing process to facilitate uniform dispersion of the compo... | 11/28/2006 |
| 7114503 | Process for producing an open celled foam The invention relates to a foam for purifying and filtrating air, particularly filtrating toxic compounds, such as for instance tar and polycyclic aromatic hydrocarbons (PAHs) from tobacco smoke, and to a method to prepare this foam. The foam according to the invent... | 10/03/2006 |
| 7094463 | Foam and method of making The present invention is directed to a process for producing a polypropylene foam by mixing a high melt strength polypropylene and a blowing agent to form a melt mixture, reducing the temperature of the melt mixture at the exit of the apparatus to an exit temperatur... | 08/22/2006 |
| 7060736 | Blowing agent solubility in polymers The selection of additives to improve the solubility of blowing agents may be facilitated by using a method that involves determining and comparing the activity coefficients of prospective additives to the activity coefficients of candidate blowing agents in a given... | 06/13/2006 |
| 7039990 | Zoned stretching of a web Apparatus and methods for stretching one or more zones of a web are disclosed. Webs including stretched or activated zones are also disclosed. Each of the zones in the web is stretched in the cross-web direction, i.e., the direction transverse to the down-web direct... | 05/09/2006 |
| 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 |
| 7008972 | Golf ball comprising microporous materials and methods for improving printability and interlayer adhesion Golf balls and methods of making same having at least one layer including a microporous composition, wherein the microporous composition includes a polymer component and a filler component and interconnecting pores, so as to improve adhesion between layers, printabi... | 03/07/2006 |
| 7005467 | Ethylene propylene copolymer composition and process for producing vulcanizates therefor A polymer composition useful to produce a vulcanizate having improved hot air aging properties is described. The polymer composition includes two components. The first component is a polymer having a main polymer chain derived from: (i) at least about 30% by weight ... | 02/28/2006 |
| 6997640 | Backer rod for expansion joints A backer rod adapted for insertion into a construction joint having a polymeric foam body of closed-cell construction and a foraminous skin with both open and closed cells. The backer rod, when compressively inserted into a construction joint, is impervious to hot a... | 02/14/2006 |
| 6971211 | Cellulosic/polymer composite material The present invention is a component such as a siding panel that may be comprised of various formulations of cellulosic/polymer composite materials. One embodiment of the present invention is a siding panel that is comprised of a cellulosic/PVC composite material. T... | 12/06/2005 |
| 6959736 | Multilayer pipe and method for manufacturing one A multilayer pipe which comprises at least an inner layer and an outer layer. The inner layer is made of extrudable plastic, such as polyethylene PE, cross-linked polyethylene PEX or polypropylene PP. The outer layer forms a fire-protecting layer and the matrix plas... | 11/01/2005 |
| 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 |
| 6926512 | Apparatus for extruding foamed polypropylene sheet having improved surface appearance A coat hanger extrusion die wherein the aperture of the die land widens along the extrusion axis of the die to the die exit opening, thereby forming an expansion zone. ... | 08/09/2005 |
| 6914085 | Expanded polypropylene granule composition Expanded granules or a moulded article made therefrom, based on semicrystalline propylene polymer comprising, per 100 parts by weight, less than 0.035 parts by weight of volatile compounds and processes for its preparation. ... | 07/05/2005 |
| 6909028 | Stable breathable elastic garments A thermally stable microporous breathable film is provided comprising at least 35% filler, by weight of the filled-film, and a thermoplastic polymer blend of a first polyethylene polymer and a second polyethylene polymer. The first polyethylene polymer comprises 30%... | 06/21/2005 |
| 6908668 | Foamed polyolefin resin sheet An object of the present invention is to provide a foamed polyolefin resin sheet which exhibits a high adhesive strength when laminated with a layer formed of a saponified ethylene-vinyl ester copolymer and which still exhibits a high adhesive strength even when lam... | 06/21/2005 |
| 6902693 | Expanded porous thermoplastic polymer membranes and method for the production thereof Open celled membranes from thermoplastic polymers are prepared from foamed polymer melts by extrusion through a die. ... | 06/07/2005 |
