Patents for July
Patents as collected for the month of July by the editors of Rubber World Magazine
Tire sensor container system for improved sensor functionality and longevity
U.S. patent: 11,628,695
Issued: April 18, 2023
Inventors: Jeffrey McKay West, Arun Kumar Byatarayanapura Gopala, Michael William Kestner, Junling
Zhao and Peter Jung-min Suh
Assigned: Goodyear Tire & Rubber
Key statement: A tire sensor container system is provided. A tire includes a carcass toroidally extending from a first bead area to a second bead area and an innerliner formed on an inner surface of the carcass. The tire sensor container system includes a tire pressure monitoring system sensor, which in turn includes a rigid housing that is formed with an oval shape. A flexible container is mounted to the innerliner. The container includes a base and a wall extending radially outwardly from the base and the wall terminates in a lip. The container wall is formed with an oval shape that cooperates with the shape of the tire pressure monitoring sensor housing. A cavity is defined by the base, the wall and the lip and cavity receive and secure the tire pressure monitoring system sensor. The system reduces sensor rotation and maintains consistent sensor orientation to improve sensor functionality and longevity.
Waste tire derived asphalt modifier
U.S. patent: 11,623,990
Issued: April 11, 2023
Inventor: Gaylon L. Baumgardner
Assigned: Ergon
Key statement: Asphalt binders are modified using fractional products from waste tire pyrolysis, using an initial step of i) at least partially pyrolyzing, separately from such asphaltic binder, whole rubber articles or size-reduced rubber particles to provide one or more pyrolyzed rubber fractions including a pyrolyzed oil fraction having a selected minimum initial boiling point or flash point and ii) removing some or all polycyclic aromatic hydrocarbon (PAH) compounds from such pyrolyzed oil fraction to provide a reduced PAH and preferably translucent pyrolyzed oil fraction that may be combined with an asphaltic binder to provide a modified asphalt composition.
Rubber composition and a tire
U.S. patent: 11,629,207
Issued: April 18, 2023
Inventors: Julia Martine Francoise Claudine Tahon, Christian Jean-Marie Schrondweiler Kaes, James
Joseph Golden and Thomas Günther Böhner
Assigned: Goodyear Tire & Rubber
Key statement: The present invention is directed to a non-vulcanized rubber composition which is comprised of (1) 90 phr to 100 phr cis 1,4-polyisoprene; (2) 10 phr to 40 phr of pre-silanized precipitated silica; (3) 10 phr to 40 phr of carbon black; (4) 0.1 phr to 5 phr of a cobalt salt; and (5) 1 phr to 15 phr of a resinous reaction product of a methylene donor composition and a methylene acceptor composition. Moreover, the present invention is directed to a tire or tire component comprising the cured rubber composition.
Rubber composition having improved electrical insulation properties for reducing galvanic corrosion
U.S. patent: 11,629,248
Issued: April 18, 2023
Inventor: Jong Min Park
Assigned: Hyundai Motor and Kia Motors
Key statement: A rubber composition having improved electrical insulation properties for reducing galvanic corrosion, a method of preparing the composition and a rubber hose for vehicles using the composition are disclosed. The rubber composition includes a base polymer, a reinforcing agent, an anti-aging agent, an activating agent, a plasticizer and a crosslinking agent, and has electrical insulation resistance (107 Ω˙cm) of 50 or more.
Rubber composition for tire tread and tire manufactured by using the same
U.S. patent: 11,628,688
Issued: April 18, 2023
Inventors: Ki Won Lim, Byeong Joo Jeon and Sae Um Ahn
Assigned: Hankook Tire & Technology
Key statement: Disclosed are a rubber composition for tire tread and a tire manufactured using the same, in which the rubber composition for tire tread comprises a raw material rubber, which comprises a first solution polymerized styrene butadiene rubber with a low glass transition temperature (Tg) and a second solution polymerized styrene butadiene rubber with a high glass transition temperature (Tg), a reinforcing filler, a silane coupling agent, a functionalized liquid polymer and a first resin with a high glass transition temperature and a second resin with a low glass transition temperature. The rubber composition for tire tread maximizes the dispersion of silica and the interaction with rubber and, thus, the rubber composition is excellent in all of the properties with respect to wear resistance, low fuel economy and braking performance.
Tire wear state estimation system and method
U.S. patent: 11,644,386
Issued: May 9, 2023
Inventor: Kanwar Bharat Singh
Assigned: Goodyear Tire & Rubber
Key statement: A tire wear state estimation system includes a CAN bus system disposed on a vehicle. A tire supporting the vehicle is mounted on a wheel. A wheel sensor unit is mounted on a structure adjacent the wheel, and the wheel sensor unit includes a longitudinal acceleration sensor to generate a longitudinal acceleration signal. The wheel sensor unit also includes a vertical acceleration sensor to generate a vertical acceleration signal, and transmission means to communicate the longitudinal acceleration signal and the vertical acceleration signal to the CAN bus system. A processor receives the longitudinal acceleration signal and the vertical acceleration signal. An extractor extracts a tire translational mode from the longitudinal acceleration signal and a tire vertical mode from the vertical acceleration signal. The tire translational mode and the tire vertical mode are input into a classifier to generate a wear state estimation for the tire. A method is also provided.
LED lamp with soft rubber stem
U.S. patent: 11,635,175
Issued: April 25, 2023
Inventor: Song Wang
Assigned: Dongguan Huihuan Lighting
Key statement: The present invention relates to the technical field of LEDs and discloses an LED lamp with a soft rubber stem, comprising a lamp holder, a lamp housing and a lamp socket, a metal wire, an LED lamp bar, a resistor, as well as a first lead and a second lead, wherein the lamp stem and the lamp holder are electrically connected in the lamp housing; the soft lamp socket, in which an accommodating hole for accommodating the resistor is disposed, is made of high temperature resistant rubber; one end of the LED lamp bar is electrically connected to the upper end of the metal wire and the other end is electrically connected to the second lead. The lamp adopts the soft lamp socket and has better sealing performance, so that steam and the like are prevented from entering the lamp housing to affect the performance of the lamp.
Thermoplastic elastomer composition
U.S. patent: 11,634,570
Issued: April 25, 2023
Inventor: Tomoki Kanemori
Assigned: Sumitomo Chemical
Key statement: A thermoplastic elastomer composition that can form a molded article having both high low-temperature impact resistance and high hightemperature impact resistance is provided. A specimen of the thermoplastic elastomer composition 30 mm wide×30 mm long×2.0 mm thick punched out from a central portion of a molded article formed by injection-molding the thermoplastic elastomer composition into a mold cavity 90 mm wide×150 mm long×2.0 mm thick at a cylinder temperature of 220° C, a mold temperature of 50° C and an injection rate of 25 cm.sup.3/sec satisfies the following requirements: (1) an area increase rate S of the specimen after impregnation with petroleum benzine at 23° C. for 24 hours is 20% or less; and (2): a volume increase rate V of the specimen after impregnation with petroleum benzine at 23° C. for 24 hours is 20% or more and 125% or less.
Tire composition and method for making thereof
U.S. patent: 11,634,562
Issued: April 25, 2023
Inventors: Wolfgang Pille-Wolf, Jochem H. W. Vervelde, Jeremie Pichereau and Mark C. Schaapman
Assigned: Kraton
Key statement: The disclosure relates to tire tread compositions and methods for making. The compositions include a rubber, a rosin ester resin and at least one filler. The rosin ester resin is characterized as having a PAN number of less than 25, an acid number less than 20, a hydroxyl number of less than 30, and a combined acid number and hydroxyl value of less than 50. The tire tread composition has a wet grip resistance to rolling resistance indicator ratio ([tan δ at 0°C]/tan δ at 60°C) higher than a tire tread composition containing a comparable amount of a rosin ester having a combined acid number and hydroxyl value of more than 50.
Epoxidized natural rubber composite and preparation process thereof
U.S. patent: 11,634,563
Issued: April 25, 2023
Inventors: Shuangquan Liao, Changjin Yang; Zheng Peng, Yanchan Wei and Lusheng Liao
Assigned: Hainan University
Key statement: The present disclosure provides an epoxidized natural rubber composite and a
preparation process thereof and relates to the technical field of rubber materials. The epoxidized natural rubber composite provided by the present disclosure comprises the following preparation raw materials in parts by weight: 100 parts of epoxidized natural rubber, 1~30 parts of peanut meal, 0.05~0.8 parts of surfactants, 0.1~4 parts of coagulant and 0.2~12 parts of vulcanization processing aids. The present disclosure utilizes essential amino acids and non-essential amino acids contained in peanut meal to improve the aging resistance of the epoxidized natural rubber. After hot air aging, ozone aging and ultraviolet aging treatments, both the tensile strength retention rate and the elongation at break retention rate of the epoxidized natural rubber composites of the present is closure can be kept above 83%.
Rubber containing graft polymer, resin composition containing rubber containing graft polymer and
shaped article of same
U.S. patent: 11,634,574
Issued: April 25, 2023
Inventors: Misaki Hagi, Shinji Matsuoka, Masashi Iimori, Tatsuhiro Hiraoka and Yuuta Maenaka
Assigned: Mitsubishi Chemical
Key statement: Provided is a rubber containing graft polymer which is excellent in mechanical strength such as weld strength or impact strength, required as a rubber-containing graft polymer. A rubber containing graft polymer (A) of the present invention is a rubber-containing graft polymer having a graft chain, in which when the rubber-containing graft polymer is mixed with an organic solvent and separated into an organic solvent insoluble component and an organic solvent soluble component, a caprolactone unit is contained in a graft chain contained in the organic solvent insoluble component.
Rubber composition, processing method thereof and rubber product using the same
U.S. patent: 11,634,566
Issued: April 25, 2023
Inventors: Tao Xu, Zhi Sheng Fu and An Yang Wu
Assigned: Hangzhou Xingle Technologies
Key statement: The present invention discloses a rubber composition, production method thereof and a rubber product using the same. The rubber composition includes a rubber matrix and essential components. Based on 100 parts by weight of the rubber matrix, the rubber matrix includes a branched polyethylene with a content represented as A, in which 0 < A ≤ 100, and an EPM and an EPDM with a total content represented as B, in which 0 ≤ B < 100; and the essential components include 1.5 to 10 parts of a crosslinking agent and 40 to 200 parts of a reinforcing filler. The reinforcing filler includes carbon black and silica, and can also include any one or more of calcium carbonate, talcum powder, calcined clay, magnesium silicate and magnesium carbonate, wherein the content of the carbon black is 5 to 100 parts and the content of the silica is 5 to 60 parts. The rubber composition is used for producing a rubber product with better yield and tear strength and service performance. The rubber product includes a high strength insulation compound for preparing wire and cable, a waterproof coil and a high temperature resistant conveyor belt. Pneumatic tire comprising first and second sealant layers U.S. patent: 11,639,042 Issued: May 2, 2023 Inventor: Sho Matsunami Assigned: Sumitomo Rubber Industries Key statement: The present invention provides a pneumatic tire including a sealant layer that has excellent tear resistance despite its being formed of a generally string-shaped sealant provided continuously and spirally along an inner periphery of the tire. Included is a pneumatic tire including an innerliner and a sealant layer located radially inside the innerliner, the sealant layer including a first sealant layer and a second sealant layer stacked in that order from the innerliner, the first sealant layer including a generally stringshaped sealant provided continuously and spirally along an inner periphery of the tire, the second sealant layer including a generally string-shaped sealant provided continuously and spirally along the first sealant layer, the sealant of the first sealant layer and the sealant of the second sealant layer extending in directions crossing each other. Hybrid tire cord and method for manufacturing the same U.S. patent: 11,639,565 Issued: May 2, 2023 Inventors: Min Ho Lee, Ok Wha Jeon, Jong Ha Yim and Da Ae Kim Assigned: Kolon Industries Key statement: Disclosed are a high performance hybrid tire cord capable of realizing high performance and light weight of a tire and a method for manufacturing the same. The hybrid tire cord of the present invention comprises a PET primarily twisted yarn, an aramid primarily twisted yarn and an adhesive coated on the PET primarily twisted yarn and the aramid primarily twisted yarn. In the hybrid tire cord having a predetermined length, the length of the aramid primarily twisted yarn is 1 to 1.1 times the length of the PET primarily twisted yarn, after the secondary twist is untwisted. Thermoplastic silicone polyurethane elastomer and method for preparing the same U.S. patent: 11,643,498 Issued: May 9, 2023 Inventors: Heilong Wang, Hongwei Song, Defu Liu, Sheng Zhang and Renhon Wang Assigned: Miracll Chemicals Key statement: The present invention relates to a thermoplastic silicone polyurethane elastomer and a method for preparing the same. The elastomer is prepared from raw materials comprising: 25-80 parts of a macromolecular polyol, 0-60 parts of a silicone oil or a liquid silicone rubber, 10-50 parts of a diisocyanate, 3-20 parts of a small molecular diol as a chain extender and 0.1-3 parts of an auxiliary agent. The macromolecular polyol is selected from a silicon-free polyol having a molecular weight of between 1,000 and 4,000 g/ mol and a polyol modified by silicone through copolymerization or grafting. The small molecular diol is a small molecular diol comprising 10 or less carbon atoms. The thermoplastic silicone polyurethane elastomer of the present invention has the following excellent performance parameters: a hardness of durometer A40-D80; a tensile strength ≥5 MPa; smooth hand feeling; resistance to dirt such as dust; resistance to liquid permeation; no irritation to skin; good encapsulation effect on PC, ABS, TPU and the like; and a 180° peel strength >25 N/25 mm.
Graphene as additive for rubber compounds and products
U.S. patent: 11,655,355
Issued: May 23, 2023
Inventor: Douglas Paschall and Adel F. Halasa
Assigned: Akron Polymer Solutions
Key statement: The introduction of graphene as an additive in rubber compounds is disclosed. The product shows increased barrier protection for tire innerliners, with no tradeoffs in other characteristics. A rubber compound is disclosed herein including butyl rubber and graphene plate, wherein the graphene plate has a thickness of less than about 3.2 nm, a particle size of between about 50 nm and about 10 μm, and contains greater than about 95% carbon.
Rubber composition for hose and hose
U.S. patent: 11,643,528
Issued: May 9, 2023
Inventor: Koki Sugihara
Assigned: Yokohama Rubber
Key statement: The present invention is to provide a rubber composition for a hose and the like, the
rubber composition having excellent oil resistance and low temperature performance. A rubber composition for a hose, the rubber composition comprising: a hydrogenated acrylonitrile butadiene rubber having an acrylonitrile amount of 24 mass % or less, a carbon black, a peroxide and a triallyl isocyanurate; a content of the peroxide being 2.4 parts by mass or more per 100 parts by mass of the hydrogenated acrylonitrile butadiene rubber; and a content of the triallyl isocyanurate being 1.9 parts by mass or more per 100 parts by mass of the hydrogenated acrylonitrile butadiene rubber and a hose formed by using the rubber composition for a hose.
Elastomer sleeve for wireless earphone and wireless earphone
U.S. patent: 11,647,320
Issued: May 9, 2023
Inventors: Yongsheng Zhu, Linyong Fan and Florin Negrut
Assigned: Harman International Industries
Key statement: Disclosed are an elastomer sleeve for a wireless earphone and a wireless earphone.
The elastomer sleeve for the wireless earphone includes: a sleeve body defining a space for accommodating an earphone body of the wireless earphone; a sleeve wing portion formed integrally with the sleeve body and extending outward from the sleeve body; and an antenna formed in the elastomer sleeve and extending from the sleeve body to the sleeve wing portion. The wireless earphone includes an earphone body and one or more elastomer sleeves for detachably connecting to the earphone body and partially enclosing the earphone body.
Fire resistant rubber compositions and hose
U.S. patent: 11,643,539
Issued: May 9, 2023
Inventors: Anh Burrowes, John Anthony Brookes and Jenny Zhaoxia Yu
Assigned: ContiTech USA
Key statement: Hoses include a tube, a reinforcement layer disposed outwardly from the tube and a cover layer disposed outwardly from the reinforcement layer. The cover layer may be based on a first elastomeric blend of a first chlorinated polyethylene and chlorosulphonated polyethylene, a first flame resistant composition and a peroxide/sulfur curing system. The tube may be based upon a second elastomeric blend of a second chlorinated polyethylene and ethylene vinyl acetate rubber, a second flame resistant composition and a peroxide curing system. The first flame resistant package and the second flame resistant package includes one or more ingredients selected from the group consisting of antimony oxide, zinc molybdate/magnesium silicate complex, magnesium aluminum hydroxy carbonate and aluminum trihydroxide. In some aspects, the hoses meet the testing performance requirements of EN 45545-2, HL2/R22 category standard and EN854 type 2TE standard.
Thermoplastic elastomeric formulation
U.S. patent: 11,649,349
Issued: May 16, 2023
Inventors: Chong Ban Wong, Keuw Wei Lim, Arman Sikirman, Chee Kin Phang and Nurjihan Sadon
Assigned: Top Glove International
Key statement: A thermoplastic elastomeric formulation comprises (i) a water based thermoplastic elastomer (TPE), (ii) a surfactant, (iii) an antioxidant, (iv) a antifoaming agent and (v) a crosslinking agent. The water based TPE is styreneisoprene- styrene (SIS) copolymer latex. A glove that is produced using the thermoplastic elastomeric formulation of the present invention is known as water based TPE gloves, such as water based TPE medical exam gloves, water based TPE household gloves and water based TPE industrial gloves, in particular water based TPE surgical gloves.