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| Number | Title | Issue Date |
| 7425584 | Catalytic devulcanization of rubber The present invention relates generally to the delulcanization of rubber. More specifically, the present invention relates to a process for the hydro-devulcanization of vulcanized rubber utilizing a rubber swelling solvent, a source of reactive hyrogen and elevated ... | 09/16/2008 |
| 7285058 | Pre-vulcanized or pre-crosslinked materials for golf balls The present invention relates to golf ball components and golf balls comprising high levels of pre-vulcanized or pre-crosslinked materials, as well as methods of making same. The pre-vulcanized or pre-crosslinked materials are typically thermoset materials that are ... | 10/23/2007 |
| 7141196 | Method of manufacturing a golf ball having one or more layers The present invention relates to golf ball components and golf balls comprising high levels of pre-vulcanized or pre-crosslinked materials, as well as methods of making same. The pre-vulcanized or pre-crosslinked materials are typically thermoset materials that are ... | 11/28/2006 |
| 6797757 | Article, including tires, having component or rubber composition which contains particles of pre-vulcanized rubber and blend of tetrathiodipropionic and trithiodipropionic acids The invention relates to articles of manufacture, such as for example, tires and industrial products, which have at least one component comprised of a rubber composition which contains particles of pre-sulfur vulcanized rubber (e.g. ground recycled rubber) and impur... | 09/28/2004 |
| 6590042 | Recycled rubber processing and performance enhancement A process for reclaiming sulfur-cured, vulcanized rubber by combining finely ground scrap vulcanized rubber within a specialized, twin-screw extruder capable of providing strong shearing and just-on-time mixing; adding a reclaiming agent to the extruder; ... | 07/08/2003 |
| 6583211 | Moldable composite material A moldable heterogeneous composite material has a continuous plastic phase (30) and a discrete phase of unground rubber (20) dispersed in the continuous phase. The composite material can be formed from thermoplastic or thermosetting materials and pieces o... | 06/24/2003 |
| 6555588 | Method for the production of a polypropylene blend A method for producing a polypropylene blend from a plastic packaging materials containing high molecular weight polypropylene, other high molecular weight polymers such as polyethylene, low molecular weight polymers and other contaminants. The method inc... | 04/29/2003 |
| 6489372 | Polycarbonate isolation through homogenization devolatization Polymer are removed from organic solvent-polymer mixtures by preparing a liquid-liquid dispersion of finely dispersed solvent droplets containing polymer in water, adding this liquid-liquid dispersion to a stirred vessel containing water or other suitable... | 12/03/2002 |
| 6346561 | Pavement material The present invention is a recipe and method for combining Gilsonite and other asphaltites with curative elastomers that are powder granular form and which are added to asphalt. Second recipe and method is disclosed to create a dry liquid concentrate comp... | 02/12/2002 |
| 6310126 | Mixer and process for use A mixer and method of using the mixer is disclosed in which a closed chambered vessel capable of both holding pressure and vacuum is charged with a mixture of elastomer and materials taken from the group of tall oil, fatty acids and residues of tall oil p... | 10/30/2001 |
| 6242501 | Processes for the recovery of poly(arylene sulfide) A process is provided to recover poly(arylene) sulfide from a poly(arylene) sulfide reaction mixture. In particular, a process is provided to recover poly(arylene) sulfide utilizing at least one extraction agent followed by vacuum drying.... | 06/05/2001 |
| 6180753 | Process for treating a compound having epithio structures for disposal An acidic substance is added to a mixture containing a compound having epithio structures and a catalyst for curing the compound and the mixture is solidified. The mixture containing a compound having epithio structures and a catalyst for curing the compo... | 01/30/2001 |
| 6087406 | Recycle of vulcanized fluorinated elastomers Compositions and techniques useful to effectively recycle crosslinked (i.e., vulcanized or cured) fluoroelastomers are disclosed. The invention utilizes an additive system that includes a cure-enhancing additive, a crosslinking agent, and an accelerator.... | 07/11/2000 |
| 6069181 | Process for recycling polyarylene sulfides The present invention relates to a process for obtaining polyarylene sulfide from polyarylene sulfide-containing material. For this purpose, the polyarylene sulfide-containing material is treated with a solvent in which it dissolves, and is subsequently r... | 05/30/2000 |
| 5994416 | Process for recycling polyarylene sulfides The present invention relates to a process for obtaining polyarylene sulfide from polyarylene sulfide-containing material. For this purpose, the polyarylene sulfide-containing material is treated with a solvent in which it dissolves, and is subsequently r... | 11/30/1999 |
| 5866678 | Absorbent and method for production of absorbent resin A method for the production of an absorbent resin having a very small residual monomer content either by adding to an absorbent resin powder a substance capable of reacting with the residual monomer in the absorbent resin powder thereby forming an absorbe... | 02/02/1999 |
| 5770632 | Reclaiming of elastomeric materials A process for reclaiming elastomeric material from elemental sulphur-cured elastomeric material having a vulcanized network without using hexamethylene tetramine, by treating the sulphur-cured elastomeric material having a vulcanized network with one or m... | 06/23/1998 |
| 5770633 | Process for regenerating cross-linked, vulcanized flourine rubber Filler-containing, cross-linked, vulcanized fluorine rubber waste is regenerated by treatment with at least one of CH3 SO3 H, ClSO3 H, CF3 SO3 H and fuming sulfuric acid, followed by dissoluting into ... | 06/23/1998 |
| 5677354 | Process for reclaiming cured or semi-cured rubber A process for reclaiming cured or semi-cured rubber, by subjecting a mass of rubber to be reclaimed to a solvent effective to swell said mass, passing the formed swollen mass of rubber through restriction means having small openings, such as a perforated ... | 10/14/1997 |
| 5604277 | Rubber and plastic bonding A dry liquid concentrate mixture is disclosed comprising crumb rubber particles and tall oil, tall oil derivatives or other fatty acids, which may be enhanced by other components, such as modifiers, for use to enhance the properties of parent materials, s... | 02/18/1997 |
| 5504122 | Recovery of dimethyl terephthalate from polymer mixtures Dimethyl terephthalate is recovered from polymer mixtures containing polymers of terephthalic acid and glycol and a chloride polymer, by adding base to neutralize the hydrochloric acid formed by the degradation of the chloride polymer.... | 04/02/1996 |
| 4851500 | Process for preparing a rubber scrap composition A process and apparatus is provided for making a rubber-like product from rubber scrap, such as recycled tire scrap. The process includes mixing the rubber scrap with from 1 percent to 15 percent, with respect to the weight of the rubber scrap, of added s... | 07/25/1989 |
| 4579871 | Method of reclaiming rubber Rubber crumb is subjected to direct reclaiming by being mixed with a plasticizer and optionally also a peptizer and, under agitation and supply of a gas atmosphere with controlled oxygen content and at a temperature of 130°-200° C., heated at substantia... | 04/01/1986 |
| 4544675 | Reclaiming of vulcanized rubber In a process for reclaiming sulfur-vulcanized rubber in the presence of oil, water vapor and aryl disulfide peptizer at elevated pressure and temperature, an improvement where said disulfide is obtained as a mixture also containing dissolved volatile merc... | 10/01/1985 |
| 4211676 | Process for reclaiming scrap vulcanized rubber Scrap vulcanized rubber is reclaimed by mixing with a reclaiming agent selected from (a) 1,8-diazabicyclo-[5,4,0]-undecene-7, (DBU) (b) phenol salts of DBU, (c) carboxylic acid salts of DBU, (d) thiuramsulfide compounds, (e) aromatic disulfides, and (f) b... | 07/08/1980 |
| 4161464 | Devulcanized rubber composition and process for preparing same A devulcanized rubber composition is disclosed which is obtained by low temperature phase transfer catalyzed devulcanization of commercial scrap rubber, such as a vulcanized polyisoprene rubber, butadiene-styrene rubber, cis-polybutadiene rubber used for ... | 07/17/1979 |
| 4148763 | Reclaim oil for digester process for rubber reclaiming Natural and synthetic rubber can be reclaimed by the use of a reclaiming oil having a molecular weight between 200 and 1000 and comprised of a mixture of substituted benzene compounds, such as alkyl benzenes and alkylated indanes, which mixture has an ini... | 04/10/1979 |
| 4118455 | Soft rubber steering wheel, composition and method of manufacture An injection molding process for the manufacture of a sports type steering wheel rim cover having a soft feel and high wear resistance without exudation of plasticizer which could produce a slippery rim section or windshield fogging. The process includes ... | 10/03/1978 |
| 4101463 | Molded composition and article molded therefrom A molding composition processable into a vulcanized elastomeric article such as a solid rubber tire, for example, is formed by mixing together previously vulcanized scrap rubber, a vulcanizing agent such as sulfur, and suitable quantities of accelerator a... | 07/18/1978 |
| 4077923 | Method of manufacturing cation exchanger The method of manufacturing a cation exchanger which includes chopping up waste tires and then successively heat treating and then sulfonating the resultant product.... | 03/07/1978 |
| 4018730 | Method for emulsifying asphalt-rubber paving material and a stable thixotropic emulsion of said material A new method is provided for emulsifing a asphaltrubber pavement repair material into a stable thixotropic emulsion capable of flowing as a liquid upon gentle agitation. The method generally comprises the steps of heating asphalt and rubber to form a jell... | 04/19/1977 |
