Class / Patent application number | Description | Number of patent applications / Date published |
521047000 | Treating polymer derived from hydrocarbon monomers only | 22 |
20080221228 | Process for the Recycling of Expanded Polystyrene - The invention relates to an enhanced process for the recycling of expanded polystyrene. Said process essentially comprises the reduction in volume of expanded polystyrene by means of dissolution in a solvent, separation of the insoluble components, selective precipitation of the polystyrene with an anti-solvent, separation, drying and extrusion of the precipitated polystyrene, recovery by distillation and recycling of the solvent. The process is characterized in that the anti-solvent is a butanol selected form n-butanol, iso-butanol or sec-butanol and the solvent is dimethyl carbonate, alone or in a mixture containing up to 25% by weight of butanol. | 09-11-2008 |
20080281002 | Method for Recycling Plastic Materials and Use Thereof - The invention relates to a method for recycling plastic materials which contain at least two polymers, copolymers or blends thereof based on polystyrene. The plastic material is thereby mixed with a solvent for the polymers, copolymers or blends. Subsequently a precipitation is effected by addition of a corresponding precipitant so that then the gelatinous precipitation product can be separated from the further components of the plastic material. The method is used for recycling of any plastic materials, in particular of plastic materials from electronic scrap processing and from shredder light fractions. | 11-13-2008 |
20090082476 | Method of separation and cleaning of post consumer carpet face yarn from carpet backing yarn product produced therefrom - A process for producing a synthetic fiber composition with reclaimed post consumer carpet yam, wherein face yam is shaved from post consumer carpet using a shaving device to provide shaved face yam, the shaved face yam is reduced in size, contaminants are removed using mechanical screeners, the shave face yam is melt filtered, and then fiber spun. | 03-26-2009 |
20090209667 | Recycled Poly(vinyl butyral) - The present invention provides a method of recycling poly(vinyl butyral) resin and incorporating that poly(vinyl butyral) resin into laminated glass and other articles. Poly(vinyl butyral) resin is recovered from discarded laminated glass through a well defined process, as described herein as the present invention, that includes all or most of the steps of granulation of the laminated glass, solvent extraction of plasticizer and impurities, dissolution of poly(vinyl butyral), pre-filtration of insoluble contaminants, color removal via adsorption or bleaching, post-filtration of carbon particles, precipitation of poly(vinyl butyral), and washing, stabilization, and drying of poly(vinyl butyral) resin. | 08-20-2009 |
20090258957 | Recycled Plastic Composition - A method of producing settable, strong, rigid, durable and machinable compositions including plastics and organic fibres including the steps of: (a) forming a polyolefin source of plastic into particle sizes about 2 mm to 10 mm in diameter; (b) forming a polystyrene source of plastic into particle about 2 mm to 10 mm in diameter; (c) forming a natural organic fibre source into fibres in a size ranges between 0.2 mm and 5 mm; (d) mixing the above in a ratio between 70% to 20% by weight of a), 60% to 20% by weight of b), and 50% to 10% by weight of c) to form a combination until the combination is substantially mixed; (e) drying the combination of d) at a temperature up to 135° C. until the mixture is stable dry; and (f) mixing and drying the combination of e) thermally and/or mechanically to achieve a moisture content below 1% for the combination. | 10-15-2009 |
20100216902 | Method for the pretreatment, reprocessing or recycling of thermoplastic material - The invention relates to a method for the pretreatment, reprocessing or recycling of thermoplastic material, wherein the plastic material to be treated is heated in at least one receptacle or reactor while undergoing constant mixing or movement and/or comminution at a temperature below the melting temperature of the plastic material, and as a result is at the same time crystallized, dried and/or purified, wherein at least one rotatable comminuting or mixing tool, with working edges that act on the material with a comminuting and/or mixing effect, is used for the mixing and/or heating of the plastic material, the heating taking place in particular by applying mechanical energy. | 08-26-2010 |
20110021647 | Expanded polystyrene solubilization method - The invention relates to a method of solubilising expanded polystyrene (EPS), in which the EPS is brought into contact with at least one initial solvent, enabling the transition of the EPS from an expanded solid state to the gel state. The aforementioned gel is subsequently treated with at least one complementary solvent that is different from the initial solvent, enabling the solubilisation thereof such as to produce a true solution. The invention also relates to the product thus obtained and to the use of said product. | 01-27-2011 |
20110071230 | Medical Devices Formed From Recycled Medical Waste and Methods of Manufacture - Methods of reclaiming plastic from plastic medical waste containers containing medical waste and manufacturing recycled medical devices are described. Recycled medical devices made from plastic medical waste containers containing medical waste are also described. | 03-24-2011 |
20110288190 | METHOD FOR TREATING A MATERIAL DERIVED FROM RECOVERY AND GRINDING - A method of treating a material derived from recovery and shredding, the material comprising a mixture of polypropylene and polyethylene, wherein the material is mixed with 1% to 5% by weight of copolymer of ethylene-α-olefin type. | 11-24-2011 |
20120071574 | STONE BASED COPOLYMER SUBSTRATE - A stone based copolymer substrate includes calcium carbonate (CaCO3) from approximately fifty to eighty-five percent (50-85%) by weight and varying in size generally from 1.0 to 3.0 microns, high-density polyethylene (HDPE) from approximately two to twenty-five percent (2-25%) by weight and a biopolymer from approximately two to twenty-five percent (2-25%) by weight. The substrate may include a biodegradation additive from approximately three fourths of a percent to two percent (0.75-2%) by weight. By selectively adjusting the ranges of the substrate's components, various products can be made to replace current tree-based and plastic-based products. The substrate can be configured to be tear proof, water proof, fade resistant and fire retardant while utilizing less energy and producing less waste during its manufacture. In an exemplary embodiment of the invention, the stone used in the substrate includes limestone. | 03-22-2012 |
20120083542 | METHOD FOR TREATING WASTES - The present invention relates to a process for the treatment of waste in a reactor ( | 04-05-2012 |
20120149790 | RECYCLED BUILDING MATERIAL AND METHOD THEREOF - The present invention provides a recycled building material such as roof/Geo membrane that comprises (i) a polyolefin, (ii) a polymer containing a carboxyl group or a hydroxyl group, and (iii) a compatabilizer for the components (i) and (ii) which contains an epoxy group or an anhydride group. The present invention also provides a method of recycling building material as well as an article of manufacture such as a TPO membrane using the recycled building material. The TPO membrane has gained better physical properties such as consistent product quality, tensile strength, tear strength, wind resistance, and avoidance of tedious screening processes, among others. | 06-14-2012 |
20120322901 | METHOD OF DECONTAMINATION OF POLYOLEFINS - A process for removing a contaminant from post consumer recycled (PCR) plastic is disclosed, the process comprising the steps of comminuting the PCR, to prepare particles having a particle size from about 0.001 inch to about 0.15 inch, wherein the PCR plastic is not polyethylene terephthalate; and driving the contaminant out of the plastic particles by causing the contaminant to diffuse out of the plastic particles. | 12-20-2012 |
20130046034 | CONTROL OF THE MELT FLOW RATE OF POLYOLEFIN MIXTURES RECOVERED FROM POST-CONSUMER DURABLE GOODS - A process for creating polyolefin blends from waste streams with controlled rheological properties can include processing a waste stream to make a mixture comprising a mixture comprising polypropylene and polyethylene and compounding the mixture with one or more peroxides or nitroxides to produce a polyolefin blend. For example, a process can include: determining the required melt flow rate of the end product; determining the ratio of polyethylene to polypropylene to achieve the required melt flow rate; effecting a separation of polypropylene from polyethylene to achieve the desired composition; determining the amount of peroxide or peroxide concentrate required to increase the melt flow rate to the required level; melt compounding the mixture; evaluating the melt flow rate of the product; and adjusting the composition of polyethyelene and polypropylene or the amount of peroxide added if necessary to achieve the required melt flow rate. | 02-21-2013 |
20130225702 | Recycled construction material made from fire-resistant styrofoam waste and method for preparing same - The present invention relates to construction material obtained by recycling fire-resistant Styrofoam waste, and to a method for preparing same. The present invention relates to recycled construction material made from fire-resistant Styrofoam waste, which is prepared by: mixing water, liquid soap, and a mixture consisting of 2 to 8 wt % of fire-resistant Styrofoam waste, 50 to 70 wt % of cement, 20 to 30 wt % of steel sludge, and 5 to 10 wt % of pearlite; and injection-molding or compression-molding the resultant mixture. | 08-29-2013 |
20130231408 | SOLID SURFACE SHEETS CONTAINING POST-CONSUMER RECYCLED MATERIALS AND METHODS OF MAKING SAME - Embodiments of the present invention are directed to solid surface sheets and methods of making solid surface sheets, wherein the method comprises dissolving post-consumer recycled polystyrene in a first liquid resin precursor to form a blend, solidifying the blend via curing, grinding the solidified blend into recycled particles, adding the recycled particles and filler into a second liquid resin precursor to produce a solid surface precursor, and molding and curing the solid surface precursor to produce the solid surface sheet. | 09-05-2013 |
20140303268 | One-Pot, High-Performance Recycling Method for Polymer Waste Achieved Through Renewable Polymer Synthesis - Compositions and processes for development of sustainable materials based upon a method of thermoplastic polymer recycling with a solvent that is also a monomer for renewable polymer synthesis. By combining petroleum-derived polymers with bio-based monomer feedstocks, biphasic, blended polymer products are produced and are shown to exhibit facile tunability of physical and material properties. This one-pot, solvent-based recycling approach yields neat recycled products without the use of solvent evaporation or solute precipitation, and the functional utility of the resulting polymer blends greatly exceeds that of either homopolymer alone. | 10-09-2014 |
20150065589 | COMPOSITIONS COMPRISING POLY(TRIMETHYLENE TEREPHTHALATE) AND THERMOPLASTIC POLYOLEFIN AND PROCESSES USING THE COMPOSITIONS - This invention pertains to compositions and processes suitable for recycling post-consumer carpet tiles that comprise poly(trimethylene terephthalate) fibers and thermoplastic polyolefin backings. The compositions disclosed herein comprise poly(trimethylene terephthalate) and thermoplastic polyolefins, compositions which may or may not be mineral filled. Strong tough articles can be prepared by molding or extrusion of typical commercially available carpet tiles when combined with additional amounts of thermoplastic polyolefin, whether filled or unfilled. | 03-05-2015 |
20150353703 | METHOD FOR RECYCLING POLYMERS AND PRODUCT PRODUCED FROM SAID METHOD - The invention relates to a recycling method for obtaining a polymer from “post-consumer” materials, and to a material and a part consisting of polymers obtained from the recycling of used polymers. | 12-10-2015 |
20160082623 | SEPARATION DEVICE AND SEPARATION METHOD - Provided are a separation device and a separation method with which plastic and aluminum can be separated. A separation device includes a heating unit, a container, and a pressing member. The heating unit heats a processing target containing aluminum and one or more types of plastic to a first temperature. The first temperature is a temperature that is less than the melting point of aluminum and is greater than or equal to the melting point of at least one type of plastic. The container is for accommodating the processing target heated by the heating unit to the first temperature. The pressing member has a hole portion allowing the plastic melted by the heating unit to pass through, and separates aluminum and the plastic by pressing the processing target accommodated in the container. | 03-24-2016 |
20160115292 | SEPARATION METHOD AND SEPARATION DEVICE USED THEREIN - Provided are a separation method and a separation device used therein with which plastic and aluminum can be separated. The separation method includes a first heating step, and a first heat insulation step. In the first heating step, a processing target, which is accommodated in a container and contains aluminum and one or more types of plastic, is heated to a first temperature. The first temperature is a temperature that is less than the melting point of the aluminum and is greater than or equal to the melting point of at least one type of the plastic. Thus, the at least one type of plastic is melted. In the subsequent first heat insulation step, the processing target is kept at the first temperature. The heat insulation is continued until the aluminum is precipitated in the container and separated from the melted plastic. | 04-28-2016 |
20190144631 | PROCESSES FOR RECYCLING WASTE THERMOPLASTIC POLYMERIC MATERIALS | 05-16-2019 |