Class 522/912 - Polymer derived from ethylenic monomers only

Subclass of Class 522 - Synthetic resins or natural rubbers -- part of the class 520 series
Definition: Subject matter wherein the exemplified treatment involving one megarad or
No. of patents: 32
Last issue date: 04/22/2008

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Number	Title	Issue Date
7361696	1,4-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
7291655	Polymerisation method and device for carrying out a polymerisation method A polymerization process with elevated productivity using a coordination catalyst, wherein electromagnetic radiation is applied during polymerization. The irradiation of light greatly increases the activity of the coordination catalyst. ...	11/06/2007
6692679	Cross-linked molded plastic bearings A method is provided for forming a plastic prosthesis bearing, net-shape bearing, near net-shape bearing or plastic stock from which such a bearing can be formed. The method includes the steps of providing plastic resin in powdered form, subjecting the po...	02/17/2004
6562540	Process for medical implant of cross-linked ultrahigh molecular weight polyethylene having improved balance of wear properties and oxidation resistance A medical implant of ultrahigh molecular weight polyethylene having an improved balance of wear properties and oxidation resistance is prepared by irradiating a preform of ultrahigh molecular weight polyethylene, annealing the irradiated preform in the ab...	05/13/2003
6528160	Adhesive transparent resin and a composite including the same To provide a transparent resin which is suitable in the process of producing a coating for electronic materials, a glass having both of the scattering-preventing function and the antireflective function, an adhesive agent, a shock-absorbing material, an u...	03/04/2003
6316158	Process for medical implant of cross-linked ultrahigh molecular weight polyethylene having improved balance of wear properties and oxidation resistance A medical implant of ultrahigh molecular weight polyethylene having an improved balance of wear properties and oxidation resistance is prepared by irradiating a preform of ultrahigh molecular weight polyethylene, annealing the irradiated preform in the ab...	11/13/2001
6242507	Process for medical implant of cross-linked ultrahigh molecular weight polyethylene having improved balance of wear properties and oxidation resistance A medical implant of ultrahigh molecular weight polyethylene having an improved balance of wear properties and oxidation resistance is prepared by irradiating a preform of ultrahigh molecular weight polyethylene, annealing the irradiated preform in the ab...	06/05/2001
6204301	Fluoroplastic composites and a process for producing the same Fibers as a reinforcing substrate are impregnated with the particles of polytetrafluoroethylene and pressed into a shape at the melting point of polytetrafluoroethylene. Alternatively, the reinforcing substrate sandwiched between polytetrafluoroethylene s...	03/20/2001
6184265	Low temperature pressure stabilization of implant component Wear resistance and oxidation resistance of polymer material or a polymer component for bioimplantation are improved by packaging a polymer object in a sealed gas impermeable package substantially free of oxygen, irradiating the package with penetrating r...	02/06/2001
6017975	Process for medical implant of cross-linked ultrahigh molecular weight polyethylene having improved balance of wear properties and oxidation resistance A medical implant of ultrahigh molecular weight polyethylene having an improved balance of wear properties and oxidation resistance is prepared by irradiating a preform of ultrahigh molecular weight polyethylene, annealing the irradiated preform in the ab...	01/25/2000
5883151	Continuous method for producing polypropylene mixtures of increased stress-crack resistance and melt strength Polypropylene mixtures of increased stress-crack resistance and melt strength can be produced by irradiating polypropylene powders with low average particle diameters by low energy electron-beam accelerators with energies of 150 to 300 keV. The polypropyl...	03/16/1999
5554441	Random macrodomain multiconstituent fibers, their preparation, and nonwoven structures from such fibers Multiconstituent fibers prepared from two or more polymers, with at least one of these polymers being randomly dispersed through the fiber, in the form of domains. At least about 40 percent by weight of these domains have one length of at least 20 microns...	09/10/1996
5487943	Multiconstituent fibers, and nonwoven structures of such fibers Multiconstituent fibers having a dominant continuous linear low density polyethylene phase, and one or more discontinuous phase polymers, dispersed through the dominant continuous phase in the form of domains. The indicated discontinuous phases polymers a...	01/30/1996
5409966	Method for producing pressure sensitive poly (N-vinyl lactam) A hydrophilic, pressure-sensitive adhesive composition prepared by irradiating solid poly(N-vinyl lactam) with ionizing radiation to crosslink the poly(N-vinyl lactam) and thereafter mixing the radiation-crosslinked poly(N-vinyl lactam) with essentially u...	04/25/1995
5290548	Surface modified ocular implants, surgical instruments, devices, prostheses, contact lenses and the like A method for modifying the plastic surface of an article adapted for contacting living tissue by the gamma or electron beam irradiation induced chemical graft coating thereon of: (1) a neutral or ionic water-soluble, hydrophilic vinylic monomer or salt th...	03/01/1994
5211959	Processes for producing slow-release powders A process for producing a slow-release powder which permit various active ingredients such as perfumes, insect control agents, rust inhibitors, mold inhibitors and antibacterial agents to be slowly released over a prolonged time, the process comprising th...	05/18/1993
5155197	Copolymer of propylene and trans-1,4-hexadiene and method for preparation thereof A copolymer of trans-1,4-hexadiene and propylene, and a method for its preparation. The copolymer is isotactic, essentially free of cis-1,4-hexadiene, and contains from 0.01 to 5 mole percent 1,4-hexadiene. The copolymer is radiation-stabilized against mo...	10/13/1992
5126381	Bead processor A process and apparatus are disclosed for producing polymerized beads containing actives such as perfumes and pesticides, by forming droplets from a solution of monomers and the actives. The solution is subjected to ultraviolet light to initiate polymeriz...	06/30/1992
4810523	Pressure-sensitive adhesives Acrylate-based pressure-sensitive adhesives are produced by a process in which a liquid, polymerizable monomer composition containing at least one acrylate monomer is placed in a closed reaction vessel, deaerated and the monomer(s) are polymerized by expo...	03/07/1989
4585808	Monomer removal from a polymer A method of reducing the monomer content of a polymer or polymerization media comprising subjecting the polymer containing the monomer to sufficient irradiation with a high energy radiation to polymerize said monomer, said radiation preferably occurring i...	04/29/1986
4525257	Low level irradiated linear low density ethylene/alpha-olefin copolymers and film extruded therefrom Low level irradiation of narrow molecular weight distribution, linear, low density ethylene/alpha-olefin copolymer sufficient to introduce crosslinks into the copolymer but insufficient to provide for significant gelation produces improved copolymer rheol...	06/25/1985
4332657	Emulsion composition for use in baking paint An emulsion composition for use in baking paint prepared by emulsion polymerization with ionizing radiation of a monomer mixture comprising (1) at least one acrylamide selected from the group consisting of N-methylolacrylamide and N-alkoxymethylacrylamide...	06/01/1982
4282076	Method of visbreaking polypropylene A process for preparing an environmentally stable plastic composition having narrow molecular weight distribution by visbreaking a propylene polymer using an activated portion of the propylene polymer as a prodegradant. The process includes forming the pr...	08/04/1981
4278518	Method for reducing the monomer residue content in polymer plastics The monomer content in chlorinated hydrocarbon plastic materials, as for example articles made from polymers of chloroprene vinyl chloride and vinylidene chloride, is substantially reduced by applying ionizing radiation in low dosage levels, e.g. 0.05-2 m...	07/14/1981
4239608	Method for producing piezoelectric polymeric material A method of enhancing the piezoelectric properties of a polymeric material exhibiting such properties includes the step of exposing the material to a quantity of γ radiation lying within the range of from 1 Mrad to 200 Mrads. The material is subsequently...	12/16/1980
4201641	Radiation grafting process for preparing a membrane for battery separator A process is, herein, disclosed for preparing a membrane used for prevention of short-circuiting between the anode and the cathode of a battery comprising contacting a polyethylene film with an aqueous solution of acrylic acid, water, ethylene dichloride ...	05/06/1980
4144155	Radiation process for producing a reactive aqueous emulsion A process for producing a reactive aqueous emulsion comprising dispersing a monomer mixture of (a) 65.0 - 98.8% by weight of radical polymerizable hydrophobic ethylenic unsaturated monomer having one ethylenic unsaturated bond, (b) 1.0 - 30.0% by weight o...	03/13/1979
4138300	Process for producing a transparent shaped polymeric product This invention provides a process for producing a transparent shaped polymeric product which is free from defects such as strain and bubbles and has improved chemical and physical properties. The product is produced from a methyl methacrylate- or methyl a...	02/06/1979
4102761	Radiation cure of synthetic rubbers Synthetic rubber compositions and method of radiation curing such compositions at low average radiation dose wherein the compositions are characterized by defined distribution of radiation rate enhancing and inhibiting monomers....	07/25/1978
4045416	Amine acrylate addition reaction product compositions Compositions containing an amine acrylate and another radiation curable composition. The amine acrylates are produced by the reaction of a diacrylate ester and an organic amine. The compositions are rapidly cured by electron beam radiation as well as othe...	08/30/1977
4025391	Preparation of bead-shaped immobilized enzyme Bead-shaped immobilized enzymes are obtained by adding a solution containing an enzyme and at least one water-soluble monomer or polymer to a water insoluble or slightly soluble fluid to form a mixture having enzyme-containing beads therein, freezing the ...	05/24/1977
3968051	Freeze drying photochromic filters A fast-acting photochromic filter--i.e. a filter whose optical density in the visible light range of 4000 to 7500 angstroms is increased when subject to radiation shorter than 6000 angstroms--which is room temperature stable, that is from at least about 2...	07/06/1976

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Class 522/912 - Polymer derived from ethylenic monomers only