US 20100189595A1 (19) United States (12) Patent Application Publication (10) Pub. No.: US 2010/0189595 A1 Webster (43) Pub. Date: Jul. 29, 2010 (54) METHOD OF CONTROLLING (52) U.S. Cl. ............................................... 422/4: 502/62 ORGANOLEPTIC ODORS (57) ABSTRACT (75) Inventor: Joseph R. Webster, Charlotte, NC (US) A method is taught for capturing organoleptic odor. Where a functional additive has odors from a plurality of organolepic Correspondence Address: Sources, and is blended with an odor control agent and a resin The Hanf Law Firm PLLC to produce a blend, where the blend exhibits at least a 5% 7845 Colony Road reduction in odor based on a standardized odor test SAE Suite C4, Box 158 J1351. The odor control agent is selected from the group but Charlotte, NC 28226 (US) not limited to: nepheline syenite, silica gel, hydrogels, hard and Soft clays, bentonite, clinoptilolite, hectorite, cationic (73) Assignee: Lehigh Tecghnologies Inc., Naples, exchanged clinoptilolites, cerium, cesium, chabazite, faujas FL (US) ite, gmelinite, brewsterite, calcium silicate, hydrotalcites, Zinc or magnesium aluminum hydroxy carbonates, Zinc (21) Appl. No.: 12/361,873 oxide, Zinc hydroxide, Zinc carbonate, calcium oxide, cal cium hydroxide, calcium carbonate, potassium meta phos (22) Filed: Jan. 29, 2009 phate, silver oxide, magnesium hydroxide, magnesium oxide, O O copper oxide, ferric and ferrous oxides, Sorbitol, glucitol, Publication Classification mannitol, glucose, dextrose, dextrin, allophanes, silica, (51) Int. Cl. Sodalite, silicon oxide, aluminum oxide, natural Zeolites, BOI 29/04 (2006.01) manganese dioxide, nano Zinc oxide and nano titanium and A6IL 9/04 (2006.01) combination thereof. US 2010/0189595 A1 Jul. 29, 2010 METHOD OF CONTROLLING ity, lithium,platinum, gallium, cerium, cesium. Chabazite, ORGANOLEPTIC ODORS faujasite, grnelinite, brewsterite, calcium silicate, magnesium aluminum hydroxy carbonates, Zinc oxide, Zinc hydroxide, BACKGROUND OF THE INVENTION Zinc carbonate, calcium oxide, calcium hydroxide, calcium carbonate, potassium metaphosphate, silver oxide, magne 0001. The present invention provides a method for captur sium hydroxide, magnesium oxide, copper oxide, ferric and ing organoleptic odor in a functional additive, where this ferrous oxides, Sorbitol, glucitol, mannitol, glucose, dextrose, functional additive is fraught with odors from a plurality of dextrin, allophanes, silica, Sodalite, silicon oxide, aluminum organolepic sources. oxide, natural Zeolites, manganese dioxide, nano Zinc oxide 0002 Used tires from motor vehicles are one of the largest and nano titanium and combination thereof. and most problematic sources of waste, due to the large Vol ume produced and their durability. It has been estimated that DETAILED DESCRIPTION OF THE INVENTION one tire is discarded per person per year. The U.S. Environ mental Protection Agency reports over 290 million scrap tires 0006. One way to help with the problem of unwanted were generated in 2003. Of the 290 million, 45 million of waste tires is to grind them up and use them as a functional these scrap tires were used to make automotive and truck tire additive with a resin in order to make an injection molded re-treads. The tire industry does use a small percentage of this product. One of the problems with this approach is that due to waste in the production of new tires, however due to safety the complex make up of tire rubber it may have an odor from issues, the tire industry's recycled rubber content can only be a plurality of organoleptic sources which would make injec 5-15%, new tires must be manufactured primarily from virgin tion molded pieces using this recycled rubber less attractive rubber. This leaves the majority of these tires to be disposed than parts mad with a virgin plastic. of. 0007 Surprisingly this problem can be mediated by a pro 0003 Waste tires are not a good candidate for landfills, cess of blending a resin with a functional additive where the due to their large volumes and 75% void space, which quickly functional additive is added at a level from 0% to 70% by consume valuable space. Tires can trap methane gases, caus weight of the resin. Then an additive is added at a level from ing them to become buoyant, or bubble to the surface. This 1% to 35% based on the weight of the resin, this additive bubbling effect can damage landfill liners that have been Surprisingly reduces odor, while it is not know how this is installed to help keep landfill contaminants from polluting accomplished, it is believed that the addition of this additive local surface and ground water. This has resulted in landfills reduces the level of Volatile and semi-volatile organic com minimizing their acceptance of whole tires. The other alter pounds that come off the mixture of the resin and the func native is stockpiling these wastetires, unfortunately waste tire tional additive. It has been found that levels of functional stockpiles create a great health and safety risk. Tire fires can additive having a lower end of 3, 5, 7, 10, 15 and 20 percent occur easily, burn for months, create Substantial pollution in and an upper end of 60, 55, 50, 45 and 40 percent work well. the air and ground, and result in the site becoming a Super It has been found that levels of the additive having a lower end fund cleanup site. Another health risk associated with waste of 2, 3, 5, 7, 8, 10 percent and an upper end of 30, 27, 25, 23 tires is that tire piles provide harborage for vermin and a and 20 percent work well. breeding ground for mosquitoes that may carry diseases. In 0008. The resins which can be used with this invention are 2004 the number of waste tires in storage in the United States quite varied and include, but are not limited to: polypropylene was estimated to be around 275 million. Currently there is a (PP), as a homopolymer or a copolymeras well as syndiotac great need to find creative recycling opportunities for these tic PP; polyethylene (PE), including high density PE (HDPE), waste tires. low density PE (LDPE), LLDPE and Ultra High Molecular 0004. There have been several uses for this recycled tire Weight PE (UHMW) PE; condensation polymers such as waste. One use has been to shred these tires into chunks, and Nylon, Polybutylene Terephthalate (PBT), polycarbonate us them as a filler for paving products. Another use has been (PC); additional polymers such as polystyrene, High Impact to burn tire chips in industrial boilers or incinerators. A more Polystyrene (HIPS), Poly(Styrene Acrylonitirle) (SAN), Poly significant breakthrough in the technology of recycling tires (Acrylonitrile Butadiene Styrene)(ABS) and Poly(acrylic has been introduced by Lehigh Technologies, Inc., Naples, Styrene Acrylonitrile) ASA; tackified resins and hot melts Fla., which has come up with several patented processes (U.S. such as Poly(Styrene Butadiene Styrene) (SBS); Poly(Sty Pat. Nos. 7,108.207 and 7,093.781) for recycling tires by rene Ethylene Butadiene Styrene) SEBS; polybutylene; cured cryogenically grinding the tires into a fine material, which is and uncured EPDM rubbers; acetal; acrylic; phenylene oxide: more suitable for use in wide variety of rubber, plastics and polyester, polysulfone; urethane; polyurethanes; vinyl and other applications. combinations thereof. 0009. The functional additive can be derived from a SUMMARY OF THE INVENTION recycled source and can include plastic, rubber and tires. An example of a functional additive is PolyDyneTM available 0005. A method for capturing organoleptic odor in a blend from Lehigh Technologies, Inc., Naples, Fla. and is made of a functional additive with a resin. The functional additive from recycled tires. Lehigh Technologies, Inc. has several has odors from a plurality of organolepic sources, and is patented processes, U.S. Pat. Nos. 7,108,207 and 7,093,781, blended with an additive, and a resin to produce a blended for recycling tires by cryogenically grinding the tires into a resin, where the blended resin exhibits at least a 5% reduction fine material that is suitable for use in wide variety of appli in odor based on a standardized odor test SAE-J1351. The cations. As used in this application the term functional addi additive is selected from the group, but not limited to: tive includes: additives, filler modifiers, fillers, reinforcement nepheline syenite, silica gel, hydrogels, hard and soft clays, modifiers, polymer modifiers and the like. bentonite, clinoptilolite, hectorite, cationic exchanged cli 0010. The additive, which will be referred to as the odor noptilolites of Zinc, silvercopper, ammonia, acid functional control agent, is selected from the group including: nepheline US 2010/0189595 A1 Jul. 29, 2010 syenite, nepheline, silica gel, hydrogels, hard and Soft clays, a case the additive or odor control agent might be added purified and unpurified hydrous magnesiuim aluminum sili directly to the plastic resin without the use of any functional cates, bentonite, clinoptilolite (Bulgarian) from both sodium additive to remediate any unpleasant odor that the resin might and potassium clinoptilolite forms, hectorite, cationic have. exchanged clinoptilolites (with silver, copper, nickel), 0017. In an embodiment of the invention the odor control cerium, cesium and other cation elements exchanged within agent is a blend of a magnesium aluminum silicate with an the cage structure, chabazite, faujasite, gmelinite, brewster odor control agents selected from the group of nepheline ite, calcium meta silicate, calcium silicate,