Abstract: A tire is provided with an outer sidewall, said outer sidewall comprising at least a rubber composition based on at least an elastomer, a reinforcing filler, a crosslinking system and more than 25 phr of a crumb rubber.
Type:
Grant
Filed:
December 19, 2017
Date of Patent:
July 26, 2022
Assignee:
COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN
Inventors:
Pierre Tregouet, Muhamed Jesbeer Kallungal Abdul Jaleel
Abstract: The present invention relates to a tyre for vehicle wheels comprising at least one structural element comprising a crosslinked elastomeric material obtained by crosslinking a crosslinkable elastomeric composition comprising a predispersion of natural rubber and lignin obtained by co-precipitation from latex, where said lignin has a concentration of phenolic groups higher than 2 mmol per gram of lignin, and where said predispersion comprises an amount of said lignin such as to provide, in said crosslinkable elastomeric composition, a concentration of lignin equal to or lower than about 25 phr.
Type:
Grant
Filed:
December 19, 2016
Date of Patent:
July 19, 2022
Assignee:
PIRELLI TYRE S.p.A.
Inventors:
Luca Castellani, Thomas Hanel, Luca Zoia, Marco Orlandi, Davide Barana
Abstract: The present invention provides a composite resin composition capable of forming a film in which a cellulose nanofiber is dispersed uniformly in the resin. The present invention provides a composite resin composition containing an aqueous dispersion medium, a resin particle emulsified in the aqueous dispersion medium, and a cellulose nanofiber dispersed in the aqueous dispersion medium, wherein the resin particle contains at least one selected from the group consisting of a (meth)acrylic resin particle, a styrene-based resin particle, and a (meth)acrylonitrile-based resin particle, and when a sample obtained in such a way that a liquid obtained by diluting the composite resin composition with water in an amount that allows a non-volatile content of the composite resin composition to fall within a range of 0.01 to 0.
Abstract: The invention relates to a tyre (100) for vehicle wheels comprising at least one structural element comprising a vulcanized elastomeric material obtained by vulcanizing a vulcanizable elastomeric composition comprising at least one vulcanizable diene elastomeric polymer and at least one composite reinforcing filler, a process for producing a tyre (100) comprising the composite reinforcing filler, a masterbatch comprising the composite reinforcing filler and a process for producing the same, as well as a process for producing the composite reinforcing filler.
Type:
Grant
Filed:
September 12, 2018
Date of Patent:
July 19, 2022
Assignee:
PIRELLI TYRE S.p.A.
Inventors:
Luca Castellani, Luca Zoia, Syed Danish Ali, Marco Orlandi, Thomas Hanel
Abstract: Materials make it possible to generate mechanical coupling in elastomeric compositions, of use especially for the manufacture of tyre treads. In particular, a tread comprises a composite material based on an elastomeric matrix, a crosslinking system, a reinforcing filler and oriented short fibres.
Type:
Grant
Filed:
December 15, 2016
Date of Patent:
July 12, 2022
Assignee:
COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN
Inventors:
Jose-Carlos Araujo Da Silva, Masayuki Maesaka, Philippe Mansuy
Abstract: A polymer composition is described well suited for being combined with relatively short fibers. The fibers, for instance, can have a mean fiber length of less than 1,000 microns, such as less than 700 microns, such as less than 500 microns. The polymer formulation allows for intimate mixing with the fibers without having to use a sizing agent. In one embodiment, the composition contains a polybutylene terephthalate polymer combined with a thermoplastic polymer having lower crystallinity.
Type:
Grant
Filed:
February 8, 2019
Date of Patent:
July 12, 2022
Assignee:
Celanese Sales Germany GmbH
Inventors:
Dirk Zierer, Patrick Nickolay, Tim Feuerstack
Abstract: The conjugated diene-based polymer of the invention comprises an aromatic vinyl unit based on an aromatic vinyl compound and a conjugated diene unit based on a conjugated diene compound, is modified with a compound containing a heteroatom, and has an SP value of 16.80 MPa1/2 to 17.10 MPa12.
Type:
Grant
Filed:
February 14, 2019
Date of Patent:
July 5, 2022
Assignees:
SUMITOMO CHEMICAL COMPANY, LIMITED, ZS ELASTOMERS CO., LTD.
Inventors:
Jesus Rodriguez Castanon, Toshiro Matsuo, Masako Imai, Yosuke Miyazaki
Abstract: Disclosed are a coupling agent for a rubber composition and a rubber composition for a tire containing the same. The rubber composition according to the present disclosure contains a coupling agent that may induce interactions between a rubber as a raw material and carbon black, thereby improving dispersibility of the carbon black in the rubber composition. Thus, a tire with low rolling-resistance and excellent wear resistance may be realized.
Abstract: A composite blast furnace mineral powder and a synthetic material made from same. The composite blast furnace mineral powder consists of the following materials in percentage by mass: 40-98.4% of blast furnace mineral powder, 7-20% of acrylic polymer emulsion or 1.5-3% of redispersible latex powder, 0.1-2% of fiber, 0-3% of pigment and the balance of filler. The composite blast furnace mineral powder can be pressed into a profile or a brick blank.
Abstract: Disclosed herein are elastomer compounds comprising: at least one elastomer that is resistant to heat for 70 h at 100° C. such that the at least one elastomer exhibits at least one of the following properties selected from: (a) a change in durometer hardness of no more than 15 points, (b) a change in tensile strength of no more than 40%, and (c) a change in ultimate elongation of no more than 40% The elastomer compound further comprises at least one graphene-based material present in an amount ranging from 0.01 phr to 30 phr relative to the at least one elastomer and at least one carbon black present in an amount ranging from 15 phr to 150 phr relative to the at least one elastomer. Also disclosed are methods of making such compounds, and articles comprising elastomer compounds.
Type:
Grant
Filed:
January 30, 2017
Date of Patent:
June 7, 2022
Assignee:
Cabot Corporation
Inventors:
Limeng Chen, Jaesun Choi, Agathagelos Kyrlidis, Oliver W. Tassinari
Abstract: A rubber composition contains a rubber component, polyparaphenylene terephthalamide short fibers, silica, and carbon black. The content of the silica is larger than the content of the carbon black.
Abstract: A sulfur-crosslinked rubber mixture for vehicle tires including carbon nanotubes (CNT), to a vehicle tire comprising the sulfur-crosslinked rubber mixture and to a process for producing the sulfur-crosslinked rubber mixture comprising CNT. The sulfur-crosslinked rubber mixture according to the invention is characterized in that the CNT are predispersed in at least one polyisoprene. The vehicle tire according to the invention preferably comprises the sulfur-crosslinked rubber mixture in the tread and/or a sidewall and/or a conductivity track.
Abstract: A sulfur-crosslinkable rubber mixture comprising at least the following constituents: at least one diene rubber and at least one liquid, linear modified diene polymer A, modified with a functional group of formula I) at only one chain end, the number of functional groups per molecule being on average from 0.8 to 1 (R1R2R3)Si—X—NH—C(?O)—O—,??I) where R1, R2 and R3 independently of one another are selected from methoxy groups, ethoxy groups, phenoxy groups, methyl groups, ethyl groups and phenyl groups, with in each case at least one of the groups R1, R2 and R3 being a methoxy group, an ethoxy group or a phenoxy group, and where X is a divalent alkyl group having 1 to 6 carbon atoms.
Type:
Grant
Filed:
October 16, 2018
Date of Patent:
May 10, 2022
Assignee:
Continental Reifen Deutschland GmbH
Inventors:
Catarina Sa, Gesa Tarantola, Viktoria Pavon Sierra, Armand Gabriel Becheanu-Boeke
Abstract: The present invention provides a pneumatic tire and a rubber composition for tires, which have improved durability at high temperatures and during high-speed running while ensuring good ice performance. The present invention relates to a pneumatic tire, including a tread, the tread including blocks having an average ripe density of 1.0 cm/cm2 or higher and an average height of 0.6 to 2.0 cm, the blocks containing a rubber composition having a tan ? at 100° C. of 0.179 or less as determined at an initial strain of 10%, a dynamic strain of 2%, and a frequency of 10 Hz, and has a ratio of the modulus at 100° C. to the modulus at room temperature of 69% or greater as determined in accordance with JIS K6251:2010.
Abstract: Provided is a rubber composition having a high vulcanization rate and excellent in storage stability. The rubber composition contains a rubber component that contains at least one type of a dienic rubber, a filler, a vulcanizing agent, a compound represented by a formula (1), a compound represented by a formula (2), and a vulcanization accelerator except the compound represented by the formula (1), wherein the total amount of the vulcanization accelerator and the compound represented by the formula (1) is 1.3 to 2.0 parts by mass relative to 100 parts by mass of the rubber component.
Abstract: A shaped article is formed from a cured rubber composition comprising EPDM and a diene rubber. The shaped article exhibits a coefficient of friction greater than 0.1.
Abstract: The present disclosure provides a rubber mixture and a tire made the same. The rubber mixture consists essentially of: at least one kind of polar or non-polar rubber, at least one kind of filler, at least one kind of vulcanizing agent, at least one kind of accelerant, an optional anti-scorching agent, and an optional aromatic material. The accelerant is a compound containing two or more X-Y single bonds, wherein X is selected from element O and S, and Y is selected from element N and P. The rubber mixture and the tires of the present disclosure adopt improved accelerants and anti-scorching agents to reduce the generation of pungent volatile organic compound such as aniline, cyclohexylamine, tert-butylamine, and imine, thereby improving the odor problem of the tire. Meanwhile, the present disclosure omits carbon black, zinc oxide and other substances with fine powders, thereby reducing dust hazards to the operators.
Type:
Grant
Filed:
May 15, 2018
Date of Patent:
April 12, 2022
Assignees:
ZHEJIANG GEELY HOLDING GROUP CO., LTD., ZHEJIANG GEELY AUTOMOBILE RESEARCH INSTITUTE CO., LTD.
Abstract: Provided is a carbon black master batch pellet for black coloring comprising a high concentration of carbon black, having an excellent dispersibility of the carbon black, and which can express a stable black coloring concentration with hardly any classification occurring even when mixed in the various raw materials of a thermoplastic resin composition. A pellet comprising 35 to 55 mass % of carbon black (A), 65 to 45 mass % of a thermoplastic resin (B), and 0 to 10 mass % of a dispersant assistant (C), wherein a diameter (D) in a direction orthogonal to the axial direction is 2 to 5 mm, and a ratio (D/L) of the diameter (D) to a length (L (mm)) in the axial direction is 3.0 to 1.5.
Abstract: The present invention provides a rubber composition for treads, containing: a rubber component including an isoprene-based rubber and polybutadiene rubber; silica; carbon black; a terpene-based resin; and a water-soluble fine particle and/or a foaming agent, the terpene-based resin having a softening point of 70-150° C., an ?-pinene unit content of 65-100% by mass, and a ?-pinene unit content of 0-35% by mass, the rubber component including, based on 100% by mass thereof, 20-80% by mass of the isoprene-based rubber and 20-80% by mass of the polybutadiene rubber, with a combined amount of the isoprene-based rubber and the polybutadiene rubber of 90% by mass or more, the rubber composition containing, per 100 parts by mass of the rubber component, 20-200 parts by mass of the silica, 0.1-50 parts by mass of the carbon black, and 0.1-50 parts by mass of the terpene-based resin.