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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 |
| 7250451 | 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; and mastica... | 07/31/2007 |
| 7189762 | Method of modifying crosslinked rubber A method of modifying crosslinked rubber comprising subjecting the rubber to mechanical elongational and shear forces in the presence of a supercritical fluid that is normally gaseous. Controllable devulcanization of the rubber is achieved. ... | 03/13/2007 |
| 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 |
| 7032847 | Method and installation for separating constituents of used tires The invention concerns a method for treating tyres, belts, inflatable boats, boots and other manufactured articles containing rubber, polymers and reinforcing elements, which is a close circuit system consisting in immersing the waste materials to be treated in a ho... | 04/25/2006 |
| 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 |
| 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 |
| 5859102 | Process for the stabilization of and stabilizer mixtures for PVDC-containing polyolefin mixtures Plastic mixtures, in particular recycled plastic mixtures, comprising predominantly polyolefins and 0.05-20% by weight of PVDC can be stabilized against thermo-oxidative degradation by addition of a combination of an organic phosphite or phosphonite and a... | 01/12/1999 |
| 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 |
| 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 |
| 5616646 | Restructuring silicone rubber to produce fluid or grease The invention comprises processes for the production of useful fluid or grease from curable silicone compositions or silicone rubbers, preferably reclaimed or scrap silicone rubber. The processes involve the application of energy in such a manner that a u... | 04/01/1997 |
| 5607981 | Method of manufacture of paint and adhesive rubber from vulcanized rubber Method of manufacture of paint and adhesive of rubber from vulcanized rubber that is reclaimed, becoming a product that provides impermeability, flexibility and resistance to the pellicle by process of reduction to small particles through cracking beater ... | 03/04/1997 |
| 5516809 | Method for obtaining an elastomer product with high petroleum and its by-products absorption power Methods for obtaining an elastomer product capable of absorbing petroleum and its by products including the steps of forming a mixture of waste vulcanized rubber, resin and organic solvent, grinding the mixture in a mill in the presence of manganese to pr... | 05/14/1996 |
| 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 |
| 5418256 | Method of reclaiming scrap vulcanized rubber using supercritical fluids The invention pertains to a method of treating vulcanized rubber, such as scrap tires, in which the copolymer is treated with an organic solvent under supercritical conditions, such that an organic solution of several by-products is obtained. These can be... | 05/23/1995 |
| 5356939 | Process for making rubber articles and rubber articles made thereby A process of producing a rubber article which is economical and environmentally beneficial in that it provides for the recycling of ground cured rubber into uncured rubber compositions which need only be molded or shaped into their final form.... | 10/18/1994 |
| 5258413 | Continuous ultrasonic devulcanization of valcanized elastomers This invention relates to a continuous ultrasonic method for breaking the carbon-sulfur (C--S), sulfur-sulfur (S--S), and if desired, carbon-carbon (C--C) bonds in a vulcanized elastomer. It is well known that vulcanized elastomers having a three-dimensio... | 11/02/1993 |
| 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 |
