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Class 522/161 - Derived from ethylene


Subclass of Class 522 - Synthetic resins or natural rubbers -- part of the class 520 series
Definition: Subject matter wherein the solid polymer derived from ethylene.
No. of patents: 176
Last issue date: 12/13/2011


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NumberTitleIssue Date
8076387High modulus crosslinked polyethylene with reduced residual free radical concentration prepared below the melt
The present invention provides an irradiated crosslinked polyethylene containing reduced free radicals, preferably containing substantially no residual free radical. Disclosed is a process of making irradiated crosslinked polyethylene by irradiating the polyethylene...
12/13/2011
7951850Polymer composites having highly dispersed carbon nanotubes and methods for forming same
A method of forming carbon nanotube-polymer composites includes the steps of forming a mixture solution including a plurality of carbon nanotubes dispersed in a co-solvent. The co-solvent includes an organic solvent and a second solvent being a short chain fluorinat...
05/31/2011
7858671Radiation and melt treated ultra high molecular weight polyethylene prosthetic devices
A medical prosthesis for use within the body which is formed of radiation treated ultra high molecular weight polyethylene having substantially no detectable free radicals, is described. Preferred prostheses exhibit reduced production of particles from the prosthesi...
12/28/2010
7714036Sequentially cross-linked polyethylene
A method of producing an improved polyethylene, especially an ultra-high molecular weight polyethylene utilizes a sequential irradiation and annealing process to form a highly cross-linked polyethylene material. The use of sequential irradiation followed by sequenti...
05/11/2010
7714035Plumbing manifolds
There is provided a method for preparing a plumbing manifold for use in a water system in which the manifold after molding is subjected to cross-linking high energy radiation. The manifold is made by polyethylene or a metallocene polyethylene. ...
05/11/2010
7635725Crosslinked polymers
Highly crystalline, oxidation resistant crosslinked polymeric materials such as crosslinked ultrahigh molecular weight polyethylenes having high wear resistance, enhanced stiffness, enhanced tensile strength, a high level of fatigue and crack propagation resistance,...
12/22/2009
7517919Sequentially cross-linked polyethylene
A method of producing an improved polyethylene, especially an ultra-high molecular weight polyethylene utilizes a sequential irradiation and annealing process to form a highly cross-linked polyethylene material. The use of sequential irradiation followed by sequenti...
04/14/2009
7435372Liquid bath annealing of polymers for orthopaedic implants
A method is provided for annealing a polymer for an orthopaedic implant by immersing the polymer in a liquid bath. ...
10/14/2008
7399794Polymer/carbon nanotube composites, methods of use and methods of synthesis thereof
Novel transparent composites composed of single wall carbon nanotubes incorporated into the matrix of a polymer are utilized in services wherein the composites are exposed to ionizing radiation, including galactic cosmic radiation. Accordingly, the composites are us...
07/15/2008
7399792Solid reagents
An object of the present invention is to provide a novel solid reagent capable of solving the problems of conventional solid reagents based on resin beads. The present invention relates to a solid reagent comprising an organic polymer base in which a polymer ...
07/15/2008
7390853Solid reagents
An object of the present invention is to provide a novel solid reagent capable of solving the problems of conventional solid reagents based on resin beads. The present invention relates to a solid reagent comprising an organic polymer base in which a polymer ...
06/24/2008
7388039UV-curable, non-chlorinated adhesion promoters
Modified polyolefins are produced by reacting a functionalized polyolefin with one or more ethylenically unsaturated compounds having a functional group reactive with the functional group on the polyolefin. These modified polyolefins may then polymerize in the prese...
06/17/2008
7384430Low crystalline polymeric material for orthopaedic implants and an associated method
A component made from a crosslinked polymeric material, wherein the crosslinked polymeric material has a reduced crystallinity is described. An associated method for fabricating such a component is also described. ...
06/10/2008
7381752Selective, controlled manipulation of polymers
The present invention provides partial and complete shielding approaches to alter the cross-linking characteristics of irradiated polymers, such as polyethylene. Irradiated polymers and fabricated articles, such as medical prosteses, comprising irradiated polymers a...
06/03/2008
7364685Method for producing implant parts from highly cross-linked UHMWPE and implant parts for human medicine
The invention relates to a method of manufacturing implant parts made of highly cross-linked polyethylene, wherein a blank made of ultra-high-molecular-weight polyethylene is irradiated with ionizing radiation in order to produce radicals in the blank. To optimize t...
04/29/2008
73616961,4-disubstituted diacetyline polymer and process for producing the same
A 1,4-di-substituted diacetylene polymer that is soluble in organic solvent, is composed of a repeating unit represented by the general formula ═CR—C≡C—CR′═ (wherein, R and R′ represent identical or different monovalent organic substituents), and has a...
04/22/2008
7344672Solid state deformation processing of crosslinked high molecular weight polymeric materials
Solid-state deformation processing of crosslinked high molecular weight polymers such as UHMWPE, for example by extrusion below the melt transition, produces materials with a combination of high tensile strength and high oxidative stability. The materials are especi...
03/18/2008
7335716Ethylene (co)polymers and uses thereof
An ethylene (co)polymer of the present invention is a (co)polymer with excellent moldability and mechanical properties and either an ethylene homopolymer or a copolymer of ethylene and an α-olefin of 4 to 20 carbon atoms. The (co)polymer has methyl branches measure...
02/26/2008
7329693Adhesive composition and method for bonding to rubber
An adhesive composition of the present invention comprises (A) a conjugated diene polymer having a weight-average molecular weight of 500 to 100,000 and (B) an electron pair-donating basic compound; or comprises (A) a conjugated diene polymer having a weight-average...
02/12/2008
7304097High modulus crosslinked polyethylene with reduced residual free radical concentration prepared below the melt
The present invention provides an irradiated crosslinked polyethylene containing reduced free radicals, preferably containing substantially no residual free radical. Disclosed is a process of making irradiated crosslinked polyethylene by irradiating the polyethylene...
12/04/2007
7294673Method of modifying polymeric material and use thereof
A method of modifying a polymeric material whereby the polymeric material is modified to give a highly durable surface without decreasing its strength. Namely, a polymeric material is modified by the method comprising a combination of an impregnation step, an activa...
11/13/2007
7256221Low outgassing photo or electron beam curable rubbery polymer material, preparation thereof and device comprising same
Disclosed are photo or electron beam polymerizable compositions, and preparation thereof and devices containing them. The composition contains completely or substantially completely hydrogenated hydrocarbon-based material completely free or substantially free of car...
08/14/2007
7253214Oxidation-resistant and wear-resistant polyethylenes for human joint replacements and methods for making them
The present invention presents methods for making oxidation-resistant and wear-resistant polyethylenes and medical implants made therefrom. Preferably, the implants are components of prosthetic joints, e.g., a bearing component of an artificial hip or knee joint. Th...
08/07/2007
7241455Implantable or insertable medical devices containing radiation-crosslinked polymer for controlled delivery of a therapeutic agent
An implantable or insertable medical device which comprises (a) a therapeutic agent and (b) a polymeric release region that controls the release of the therapeutic agent upon administration to a patient. The polymeric release region comprises a radiation-crosslinked...
07/10/2007
7232595Device comprising low outgassing photo or electron beam cured rubbery polymer material
Disclosed are photo or electron beam curable polymerizable compositions, and preparation thereof and devices containing such cured material. The composition contains completely or substantially completely hydrogenated hydrocarbon-based material completely free or su...
06/19/2007
7204947Method of crosslinking polyolefins
A method of forming an engineering component comprising the steps of: subjecting a workpiece or blank formed from polyolefin to gamma radiation at a total dose sufficient to cause a predetermined degree of crosslinking, wherein the...
04/17/2007
7205339Selective controlled manipulation of polymers
The present invention provides partial and complete shielding approaches to alter the cross-linking characteristics of irradiated polymers, such as polyethylene. Irradiated polymers and fabricated articles, such as medical prosteses, comprising irradiated polymers a...
04/17/2007
7186362Methods of improving the wear resistance of prosthetic medical devices
A prosthetic medical device exhibiting improved wear resistance is fabricated by sealing at least one polyolefinic material in an airtight container and providing an inert atmosphere within the airtight container. The polyolefinic material is exposed to an irradiati...
03/06/2007
7169186Monopolar constrained acetabular component
The present invention provides monopolar acetabular liners that can enclose a femoral head to form a hip replacement prosthesis, wherein the liner has a rim that creates an orifice, wherein the orifice has a diameter that is smaller than the diameter of the femoral ...
01/30/2007
7169827Production of polypropylene having improved properties
A process for producing polypropylene having increased melt strength, the process comprising irradiating polypropylene which has been polymerised using a Ziegler-Natta catalyst with an electron beam having an energy of at least 5 MeV and a radiation dose of at least...
01/30/2007
7166650High modulus crosslinked polyethylene with reduced residual free radical concentration prepared below the melt
The present invention provides an irradiated crosslinked polyethylene containing reduced free radicals, preferably containing substantially no residual free radical. Disclosed is a process of making irradiated crosslinked polyethylene by irradiating the polyethylene...
01/23/2007
7094472Radiation treated ethylene polymers and articles made from said polymers
The invention relates to ethylene polymers that are modified by ionizing radiation, prior to article formation, at a temperature less than the crystalline melt temperature and preferably under ambient atmosphere, as well as articles made from said polymers. The irra...
08/22/2006
7087660Preparation of components and articles with directed high frequency energy heated silica-rich rubber components containing high softening point polymer and sulfur curative
This invention relates to a process of preparation of components and articles of manufacture containing at least one of such components, such as tires, and the resulting prepared components and fabricated articles, by use of directed high frequency energy internally...
08/08/2006
7087269Multi-component composite membrane and method for preparing the same
The present invention relates to a multi-component composite separate membrane and a method for preparing the same, and to a multi-component composite membrane comprising a support layer and active layers, wherein the support layer is located between the active laye...
08/08/2006
7030171Process for producing vinyl polymer having functional group at end and vinyl polymer having functional group at end
The objective of the present invention is to provide a production method by which a polymer of a functional group-terminated vinyl monomer can be easily and practically produced. Further, it is another object of the present invention to provide a functional g...
04/18/2006
7026369Aqueous emulsion composition and adherent composition
To provide an aqueous emulsion composition which has high adhesion strength for a wide variety of materials including molded products and affords sufficient wettability even for the object to be adhesive bonded of low surface polarity so that it can develop sufficie...
04/11/2006
7019045Amino group containing phenol
An object of the present invention is to provide a material which resolves the drawbacks associated with polyimide polymers, and yet retains the advantages offered by conventional polyimide polymers. An amino group containing phenol derivative of the present ...
03/28/2006
7019044Production of polyolefins having improved properties
A process for producing polypropylene having increased melt strength, the process comprising (i) homopolymerising polypropylene or copolymerising propylene with one or more comonomers selected from ethylene and C4 to C101-olefins to produce a polypropylene homopolym...
03/28/2006
6927242Resin composition, coating materials containing the same, coating film and process for forming the film
A resin composition of the present invention is obtainable by adding a photo-polymerization initiator (d) to a resin solution (a) containing a modified product of a thermoplastic resin (A). The modified product is prepared by conducting radical polymerization of the...
08/09/2005
6908552Method of producing nanostructures in membrances, and asymmetrical membrane
The invention relates to a method of producing nanostructures in membranes, in which method a membrane consisting of a polymer material is irradiated with charged particles, especially ions, to produce particle tracks. The particle tracks in the membrane are etched ...
06/21/2005
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