At Least One Of These Polymers Is Derived From Two Or More Reactants Patents (Class 525/237)
  • Patent number: 10730985
    Abstract: Disclosed herein are a functionalized diene monomer-containing polymer containing first and second functionalizing groups, processes for preparing the functionalized polymer, and rubber compositions containing the functionalized polymer. The functionalized polymer contains polymer chains comprises of at least one conjugated diene monomer optionally in combination with at least one vinyl aromatic monomer wherein each polymer chain is functionalized at its chain end with at least the first functionalizing group and is coupled via the first functionalizing group to the second functionalizing group.
    Type: Grant
    Filed: December 19, 2017
    Date of Patent: August 4, 2020
    Assignee: Bridgestone Corporation
    Inventors: Yuan-Yong Yan, Zengquan Qin, Koichi Saito
  • Patent number: 10731017
    Abstract: A foam rubber molded produce obtained by molding a rubber composition containing 100 parts by mass of ethylene-?-olefin-nonconjugated diene copolymer, 4 to 30 parts by mass of amorphous 4-methyl-1-pentene copolymer, 2 to 8 parts by mass of blowing agent, and a sulfur-based vulcanizing agent, and having a Mooney viscosity after kneading (ML1+4, 100° C.) of 54 or less. A specific gravity is 0.3 to 0.8, a compression set is less than 27%, and a foam state is an interconnected cell.
    Type: Grant
    Filed: January 15, 2019
    Date of Patent: August 4, 2020
    Assignee: TOYODA GOSEI CO., LTD.
    Inventors: Naoyuki Akahori, Hidekazu Kurimoto, Yasuhiro Yamaguchi
  • Patent number: 9540464
    Abstract: The polymer of the present invention is a synthesized polyisoprene or an isoprene copolymer. The polymer has a number average molecular weight (Mn) of 1.5 million or more when measured by using gel permeation chromatography (GPC).
    Type: Grant
    Filed: March 6, 2013
    Date of Patent: January 10, 2017
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Junko Matsushita, Shojiro Kaita, Satoru Tamaki
  • Patent number: 9290585
    Abstract: Disclosed are a modified conjugated diene polymer and a method for preparing the same. Provided are advantageously a modified conjugated diene polymer and a method for preparing the same which provide superior compatibility with an inorganic filler, heat generation, tensile strength and abrasion resistance, low fuel consumption and excellent resistance on wet roads.
    Type: Grant
    Filed: August 1, 2013
    Date of Patent: March 22, 2016
    Assignee: LG Chem, Ltd.
    Inventors: Ro Mi Lee, Sang Mi Lee, Choon Hwa Lee, Byung Hoon Yoon, Jin Young Kim, Moon Seok Chun
  • Patent number: 9173767
    Abstract: A condom comprises natural rubber and polyurethane. Preferably, the condom has a single wall thickness of less than 55 ?m. More preferably the condom has a single wall thickness of less than 55 ?m and a burst pressure of 1.0 kPa or above. A process for making the condom comprises mixing polyurethane and natural rubber latex and forming a condom therefrom.
    Type: Grant
    Filed: December 20, 2007
    Date of Patent: November 3, 2015
    Assignee: LRC PRODUCTS LIMITED
    Inventors: David Michael Hill, Christophe Brodin
  • Patent number: 9133281
    Abstract: This invention relates to preparation and use of in situ functionalized elastomers in a rubber composition, namely post polymerization functionalization of elastomers, in rubber compositions containing precipitated silica filler reinforcement and tires having components thereof.
    Type: Grant
    Filed: November 30, 2012
    Date of Patent: September 15, 2015
    Assignee: The Goodyear Tire & Rubber Company
    Inventor: Gabor Kaszas
  • Patent number: 9096741
    Abstract: An air spring bellow comprising a vulcanized rubber component including the at least partially vulcanized residue of EPDM and a rubber other than EPDM.
    Type: Grant
    Filed: April 12, 2012
    Date of Patent: August 4, 2015
    Assignee: FIRESTONE INDUSTRIAL PRODUCTS COMPANY, LLC
    Inventors: Jason Donald Nieten, Michael Christopher Howard
  • Publication number: 20150148435
    Abstract: The invention concerns a method of devulcanising vulcanised rubber which comprises the following steps: a) providing at least one vulcanised rubber composition; b) grinding the vulcanised rubber into chips or pellets; c) mixing the ground rubber obtained from step b) in such a way as to homogenise the form and temperature of same. d) carrying out a non-degrading mechanical treatment on the mixed rubber at the end of step c) to obtain a polymeric composite. The invention also concerns a thermoplastic material and an elastomeric mixture which comprise, in the formulation of same, at least one polymeric composite obtained by this method of devulcanisation.
    Type: Application
    Filed: June 10, 2013
    Publication date: May 28, 2015
    Inventor: Daniel Arnaud
  • Publication number: 20150133580
    Abstract: An elastomer composition includes guayule rubber and a butadiene rubber, with at least about 5 phr guayule rubber based on 100 phr elastomer. The cured rubber has a higher coefficient of friction as compared to a cured rubber of the same formulation except using Hevea rubber rather than guayule rubber.
    Type: Application
    Filed: November 11, 2013
    Publication date: May 14, 2015
    Applicant: NIKE, Inc.
    Inventor: Thomas W. Wilson, III
  • Publication number: 20150119528
    Abstract: The present invention provides a functional diene polymer, a preparation method thereof and a rubber composition comprising the functional diene polymer. The functional diene polymer comprises at least one type of conjugated diene structural units and silane coupler functional units represented by formula (I) in its molecular chain, and the number-average molecular weight of the functional diene polymer is 50,000˜1,000,000; R1-R4 are C1-C20 linear or branched alkyl or heteroatom-containing C1-C20 linear or branched alkyl, and the heteroatom is selected from one or more of halogen, oxygen, sulfur, silicon, and phosphorus. Not only the relationship between the wet slip resistance and the rolling resistance of the functional diene polymer is effectively improved, but also the offensive odor produced in the rubber mixing process owing to the addition of the silane coupler is reduced.
    Type: Application
    Filed: October 24, 2014
    Publication date: April 30, 2015
    Applicants: CHINA PETROLEUM & CHEMICAL CORPORATION, BEIJING RESEARCH INSTITUTE OF CHEMICAL INDUSTRY, CHINA PETROLEUM & CHEMICAL CORPORATION
    Inventors: Aimin LIANG, Lin XU, Nini WANG, Xinhe KANG, Liangliang QU, Ke JIANG, Chuanqing LI, Ximing XIE, Hui LlU, Wenjuan SUN
  • Publication number: 20150096654
    Abstract: The subject invention is directed towards tire components which are comprised of rubber compositions which are comprised of (1) about 2 phr to about 45 phr of a trans-1,4-isoprene-butadiene copolymer which has about 4 weight percent to about 16 weight percent butadiene repeat units and from about 84 weight percent to about 96 weight percent isoprene repeat units, wherein the trans-1,4-isoprene-butadiene copolymer has a Mooney ML 1+4 viscosity which is within the range of about 35 to about 80; and (2) about 55 phr to about 98 phr of at least one other elastomer, preferably a diene based elastomer. The most preferred tire components are those which contain cord reinforcements and require adequate green strength to enhance the tire building and shaping process to maintain cord integrity in the final cured tire.
    Type: Application
    Filed: October 8, 2013
    Publication date: April 9, 2015
    Applicant: The Goodyear Tire & Rubber Company
    Inventors: Paul Harry Sandstrom, Xiaoping Yang, Kuo-Chih Hua, James Joseph Golden, Daniel Ray Beha
  • Publication number: 20150080522
    Abstract: A process and the resultant product from the process for continuously making a blend of a terpolymer and a tetrapolymer utilizing ethylene, propylene, and non-conjugated dienes. This process allows for the creation of products with high diene contents and broad molecular weight distributions while utilizing a continuous flow reactor and a known catalyst. The process allows for these products to be made without gelling or fouling of the reactor, which are problems known in the art.
    Type: Application
    Filed: November 26, 2014
    Publication date: March 19, 2015
    Inventors: Solomon H.K. Tang, Willie Charles Burton, Garrett Doucet
  • Publication number: 20150073085
    Abstract: A precursor to an elastomeric composition with improved properties is disclosed. The precursor comprises a cross-linkable rubber, a thermoplastic vulcanizate, and a cross-linking agent. An elastomeric composition produced by cross-linking of the rubber in the precursor and methods for manufacture of the precursor and the elastomeric composition are disclosed as well.
    Type: Application
    Filed: April 14, 2013
    Publication date: March 12, 2015
    Inventors: Nitzan Eliyahu, Mirco Pellegrini
  • Publication number: 20150056442
    Abstract: A pressure-sensitive adhesive composition contains a butyl rubber. The pressure-sensitive adhesive composition has a shear storage elastic modulus G? at ?10° C. of 1.0×106 Pa or less and a shear storage elastic modulus G? at 60° C. of 2.0×104 Pa or more obtained by dynamic viscoelasticity measurement of the pressure-sensitive adhesive composition under the conditions of a frequency of 1 Hz, a temperature rising rate of 5° C./min, and a temperature range of ?60 to 70° C.
    Type: Application
    Filed: August 21, 2014
    Publication date: February 26, 2015
    Applicant: NITTO DENKO CORPORATION
    Inventor: Youhei HAYASHI
  • Patent number: 8952098
    Abstract: The present invention provides a rubber composition for a sidewall or base tread, which offers good flex crack growth resistance, crack initiation resistance, durability, and fuel economy despite the use of a softener derived from non-petroleum resources; and also provides a pneumatic tire formed from the rubber composition. The present invention relates to a rubber composition for a sidewall or base tread, containing a rubber component including at least two kinds of diene rubbers, and a myrcene polymer, wherein the rubber component includes at least one kind of diene rubber selected from the group consisting of natural rubber, epoxidized natural rubber, and butadiene rubber, and the myrcene polymer has a weight average molecular weight of 1000 to 500000.
    Type: Grant
    Filed: November 25, 2013
    Date of Patent: February 10, 2015
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventor: Takahiro Mabuchi
  • Patent number: 8940848
    Abstract: The present invention relates to a branched conjugated diene copolymer which is useful for preparing a rubber composition, having high uniformity of a temperature dependence curve of a viscoelasticity tan ?, for a tire, a rubber composition comprising the copolymer, and a pneumatic tire produced using the rubber composition for a tire. The branched conjugated diene copolymer is composed of monomer components comprising a branched conjugated diene compound represented by a general formula (1): wherein R1 represents an aliphatic hydrocarbon group having 6 to 11 carbon atoms, and an aromatic vinyl compound represented by a general formula (2): wherein R2 represents an aromatic hydrocarbon group having 6 to 10 carbon atoms, and R5 represents a hydrogen atom or the like, and a copolymerization ratio (m) of the aromatic vinyl compound (2) is 45% by mass or more.
    Type: Grant
    Filed: September 4, 2013
    Date of Patent: January 27, 2015
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventor: Kensuke Washizu
  • Publication number: 20150024196
    Abstract: A pressure-sensitive adhesive composition includes 100 parts by mass of a rubber component containing 40 to 93 mass % of a butyl rubber and 7 to 60 mass % of a polyisobutylene and 82 to 128 parts by mass of a softener having a kinetic viscosity at 40° C. of 100 to 9000 mm2/s.
    Type: Application
    Filed: March 5, 2013
    Publication date: January 22, 2015
    Applicant: NITTO DENKO CORPORATION
    Inventors: Youhei Hayashi, Hiroki Fujii, Tetsuro Taga, Shinichiro Kose, Yoshiaki Mitsuoka, Akihiro Kiriyama
  • Publication number: 20140378602
    Abstract: The invention provides a composition comprising a first composition comprising the following: A) a first ethylene/?-olefin interpolymer that has a weight average molecular weight (Mw) greater than 90,000 g/mole and a MWD less than, or equal to 3, each as determined by conventional GPC; B) a second ethylene/?-olefin interpolymer; and wherein the first composition has a number average molecular weight (Mn) less than 10,000 g/mole, as determined by conventional GPC; and wherein the ?-olefin of first interpolymer is the same as the ?-olefin of the second interpolymer.
    Type: Application
    Filed: December 27, 2012
    Publication date: December 25, 2014
    Applicant: DOW GLOBAL TECHNOLOGIES LLC
    Inventors: Brian W. Walther, Timothy E. Clayfield, Curvel Hypolite
  • Patent number: 8912301
    Abstract: The present invention relates to a branched conjugated diene copolymer which is useful for preparing a rubber composition, having high uniformity of a temperature dependence curve of a viscoelasticity tan ?, for a tire, a rubber composition comprising the copolymer, and a pneumatic tire produced using the rubber composition for a tire. The branched conjugated diene copolymer is composed of monomer components comprising a branched conjugated diene compound represented by a general formula (1): wherein R1 represents an aliphatic hydrocarbon group having 6 to 11 carbon atoms, and an aromatic vinyl compound represented by a general formula (2): wherein R2 represents an aromatic hydrocarbon group having 6 to 10 carbon atoms, and R5 represents a hydrogen atom or the like, and a copolymerization ratio (m) of the aromatic vinyl compound (2) is 45% by mass or more.
    Type: Grant
    Filed: March 18, 2014
    Date of Patent: December 16, 2014
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventor: Kensuke Washizu
  • Publication number: 20140357798
    Abstract: A crosslinked composition is obtained by crosslinking a composition, containing: 1 to 99 parts by mass of a vinyl aromatic copolymer rubber (I) comprising 5 to 70% by mass of a vinyl aromatic monomer unit and 0.1 to 30% by mass of a conjugated diene monomer unit and having one or more tan ? peak temperatures between 75° C. and 125° C.; 99 to 1 parts by mass of an ethylenic copolymer rubber (II); 10 to 100 parts by mass of an olefinic resin (III) based on 100 parts by mass of a total amount of the vinyl aromatic copolymer rubber (I) and the ethylenic copolymer rubber (II); and 0.01 to 50 parts by mass of a crosslinking agent (IV) based on 100 parts by mass of the total amount of the vinyl aromatic copolymer rubber (I) and the ethylenic copolymer rubber (II).
    Type: Application
    Filed: September 14, 2012
    Publication date: December 4, 2014
    Applicant: ASAHI KASEI CHEMICALS CORPORATION
    Inventors: Daisuke Shimizu, Yoshifumi Araki, Katsumi Suzuki
  • Publication number: 20140323660
    Abstract: The present invention provides a rubber composition for tires which achieves a balanced improvement in rolling resistance, abrasion resistance, and wet-skid performance while providing excellent processability; and a pneumatic tire including the rubber composition. The present invention relates to a rubber composition for tires, including: a modified diene rubber A which has been terminally modified with a specific acrylamide compound; a modified diene rubber B which has been modified with a silicon or tin compound and a specific modifying compound or with the modifying compound; and a silane coupling agent containing a mercapto group, the modified diene rubbers A and B, taken as a whole, having a weight average molecular weight falling within a specific range.
    Type: Application
    Filed: December 18, 2012
    Publication date: October 30, 2014
    Applicant: Sumitomo Rubber Industries, Ltd.
    Inventor: Michio Hirayama
  • Patent number: 8865836
    Abstract: The present invention provides a tire rubber composition with which the grip performance, the abrasion resistance, and the performance in terms of rolling resistance are improved in a balanced manner. The present invention relates to a tire rubber composition comprising: a modified diene rubber A which is modified with a specific acrylamide compound; and a modified diene rubber B which is modified with a specific modifying compound alone or together with a specific silicon or tin compound, a weight average molecular weight of a total of the modified diene rubbers A and B being 300,000 to 1,400,000.
    Type: Grant
    Filed: July 5, 2012
    Date of Patent: October 21, 2014
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventor: Michio Hirayama
  • Publication number: 20140296373
    Abstract: Provided is a studless winter tire which provides good performance on ice and snow and good abrasion resistance, and suffers little change in hardness and little discoloration on the tire surface. The present invention relates to a studless winter tire including a tread formed from a rubber composition containing a predetermined amount of a farnesene resin obtained by polymerizing farnesene. The present invention relates to a studless winter tire including a tread formed from a rubber composition containing a predetermined amount of at least one myrcene resin selected from the group consisting of myrcene polymers with a Mw of 1,000-500,000, myrcene-butadiene copolymers with a Mw of 1,000-500,000, and myrcene-styrene copolymers with a Mw of 1,000-150,000; and a predetermined amount of a silica with an N2SA of 40-400 m2/g, the rubber component containing a predetermined amount of a high-cis polybutadiene with a cis content of 95% by mass or more.
    Type: Application
    Filed: March 26, 2014
    Publication date: October 2, 2014
    Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Takahiro MABUCHI, Kensuke WASHIZU, Toshifumi HABA, Kenya WATANABE
  • Publication number: 20140296049
    Abstract: A rubber composition contains a higher ethylene content EPDM and a lower ethylene content EPDM as a rubber component. The proportion of the higher ethylene content EPDM is 30 to 80 mass % based on the overall amount of the rubber component. The rubber composition is less susceptible to reduction in friction coefficient ? and has a proper hardness, a smaller permanent elongation and an excellent abrasion resistance after crosslinking. Therefore, the rubber composition is suitable for a sheet conveying roller and an image forming apparatus incorporating the sheet conveying roller.
    Type: Application
    Filed: March 10, 2014
    Publication date: October 2, 2014
    Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Akihiro MINE, Toshihiro TAMURA, Takehiko HYODO
  • Patent number: 8841383
    Abstract: Disclosed is an ethylene-propylene-diene terpolymer having isotactic polypropylene crystallinity compounded with a blend rubber wherein the terpolymer can be present in an amount effective to improve tack, aged tensile strength retention, fatigue resistance, ozone cracking resistance, and reversion resistance. Also disclosed is an elastomer composition wherein the terpolymer can have at least 60 wt % propylene-derived units, at least 6 wt % ethylene-derived units and from 0.3 to 10 wt % diene-derived units, and a tire sidewall composition comprising from 10 to 30 phr terpolymer, from 20 to 60 phr natural rubber, from 20 to 60 phr polybutadiene rubber, and an optional secondary blend rubber. Also disclosed is a vulcanizate of the elastomer composition, and articles, tire sidewalls, tires, retreaded tires, bias truck tires, off-road tires, and passenger automobile tires made with the vulcanizate. Further disclosed are processes for making molded articles and tires, and for retreading tires.
    Type: Grant
    Filed: November 2, 2007
    Date of Patent: September 23, 2014
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Michael B. Rodgers, Sunny Jacob, Michael C. Bulawa, Bharat B. Sharma, Nitin K. Tambe
  • Publication number: 20140249276
    Abstract: The invention relates to the field of producing synthetic rubbers, in particular diene (co)polymers, such as polybutadiene, polyisoprene and styrene-butadiene rubber (SBR), which can be used in the production of tyres and industrial rubber articles, in the modification of bitumens, in electrical engineering and in other fields. The method consists of a polymerization process or a copolymerization process which is carried out in two parallel reactors, and each of dienes are polymerized or copolymerized with each other and/or with arylvinyl compounds, wherein an organolithium initiator, an electron donor additive and a branching agent are fed into the first reactor, and an organo lithium initiator, an electron donor additive and a functionalizing agent are fed into the second reactor, and the resultant polymerized mixtures are subsequently mixed with each other.
    Type: Application
    Filed: October 3, 2012
    Publication date: September 4, 2014
    Applicant: OPEN JOINT STOCK COMPANY "SIBUR HOLDING"
    Inventors: Anna Viktorovna Budeeva, Artur Igorevich Rakhmatullin, Alexander Viktorovich Rogalev, Viktor Ivanovich Aksenov
  • Publication number: 20140228505
    Abstract: Curable elastomer compositions are described which include particles of reclaimed elastomeric material having a particle size of 60 mesh or smaller, sulfur and one or more accelerators, wherein the ratio by weight of the one or more accelerators to sulfur in the composition is at least 1:1. Curable styrene butadiene rubber (SBR) elastomer compositions are also described which include reclaimed elastomeric material, sulfur and one or more accelerators, wherein the ratio by weight of the one or more accelerators to sulfur in the composition is at least 1:1. The cured elastomeric compositions exhibit improved physical properties compared to elastomer compositions containing reclaim material which employ conventional high sulfur cure systems.
    Type: Application
    Filed: February 11, 2014
    Publication date: August 14, 2014
    Inventor: Frank Papp
  • Patent number: 8801955
    Abstract: Disclosed are water-soluble nanoparticles. The water-soluble nanoparticles are each surrounded by a multifunctional group ligand including an adhesive region, a cross linking region, and a reactive region. In the water-soluble nanoparticles, the cross-linking region of the multifunctional group ligand is cross-linked with another cross-linking region of a neighboring multifunctional group ligand.
    Type: Grant
    Filed: July 16, 2012
    Date of Patent: August 12, 2014
    Assignee: Industry-Academic Cooperation Foundation, Yonsei University
    Inventors: Jin-Woo Cheon, Young-Wook Jun, Jin-Sil Choi
  • Publication number: 20140171581
    Abstract: The present invention is directed to a peroxide curable rubber compound containing a butyl rubber polymer, an olefin polymer of ethylene, at least one ?-olefin and optionally at least one diene, and a high vinyl polybutadiene polymer. The present invention is also directed to a peroxide curable rubber compound containing a butyl polymer, an EP(D)M rubber polymer, and a 1,2-polybutadiene polymer.
    Type: Application
    Filed: December 19, 2013
    Publication date: June 19, 2014
    Applicant: LANXESS Inc.
    Inventors: Adam GRONOWSKI, Akhtar OSMAN, Treena CROCKETT
  • Publication number: 20140080969
    Abstract: The invention relates to a rubber composition having better workability and fracture resistance than the prior art, and more specifically, to a rubber composition containing a polymer (B) obtained from an emulsion-polymerized polymer latex (A) having a number average molecular weight in the range of 1,000-130,000.
    Type: Application
    Filed: May 31, 2012
    Publication date: March 20, 2014
    Applicant: BRIDGESTONE CORPORATION
    Inventor: Eiju Suzuki
  • Publication number: 20140051809
    Abstract: Highly branched compositions including: (i) from about 96 wt % to about 99.9 wt % metallocene catalyzed ethylene propylene diene derived units; and (ii) from about 0.1 wt % to about 4 wt % multifunctional monomer derived units, wherein the highly branched composition has: (a) a Mooney viscosity ML (1+4) at 125° C. of about 30 to 100 MU, (b) a Mooney relaxation area MLRA of about 100 to about 1000, (c) a branching index, g?(vis) of less than about 0.9, (d) a phase angle, ?, of less than about 55 degrees at a complex modulus of 10 kPa, measured at 190° C., and (e) a degree of shear thinning greater than about 0.95, measured at 190° C., are disclosed herein. Homogeneous blends including this composition are also described. Processes to make the highly branched composition and the homogeneous blend are also described herein.
    Type: Application
    Filed: July 30, 2013
    Publication date: February 20, 2014
    Inventor: Mun F. Tse
  • Publication number: 20140005296
    Abstract: The present invention provides a copolymer of a conjugated diene compound and a non-conjugated olefin that is used for manufacturing a rubber excellent in crack growth resistance, heat resistance and ozone resistance and that includes a cis-1,4 bond at a unit derived from the conjugated diene compound, a rubber composition containing the copolymer, a rubber composition for tire treads using the rubber composition for tire tread members, a crosslinked rubber composition obtained by crosslinking the rubber composition, and a tire using the rubber composition or the crosslinked rubber composition. In the copolymer of a conjugated diene compound and a non-conjugated olefin, the cis-1,4 bond content of a unit derived from the conjugated diene compound is more than 92%.
    Type: Application
    Filed: February 1, 2012
    Publication date: January 2, 2014
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Yasuo Horikawa, Shojiro Kaita, Olivier Tardif, Junko Matsushita
  • Publication number: 20140005321
    Abstract: The present invention provides a copolymer of a conjugated diene compound and a non-conjugated olefin that is used for manufacturing rubber excellent in low heat generation properties, heat resistance, ozone resistance (weather resistance), a rubber composition containing the copolymer, a crosslinked rubber composition obtained by crosslinking the rubber composition, and a tire manufactured by using the rubber composition or the crosslinked rubber composition. In the copolymer of a conjugated diene compound and a non-conjugated olefin, the content of 1,2 adduct units (including 3,4 adduct units) of a unit derived from the conjugated diene compound is 5% or less.
    Type: Application
    Filed: February 2, 2012
    Publication date: January 2, 2014
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Yasuo Horikawa, Shojiro Kaita, Olivier Tardif, Junko Matsushita
  • Publication number: 20130324660
    Abstract: The present invention provides a rubber composition that is used for manufacturing a rubber excellent in weather resistance, fracture resistance and crack growth resistance, and that contains a conjugated diene compound/non-conjugated olefin copolymer, a conjugate diene-based polymer and a non-conjugated diene compound/non-conjugated olefin copolymer, a rubber composition for tire side use using the rubber composition for tire sidewall members, a crosslinked rubber composition obtained by crosslinking the rubber composition, and a tire. The rubber composition includes: (A) a conjugated diene compound/non-conjugated olefin copolymer containing a conjugated diene compound-derived unit by at least 40 mol %; (B) a conjugated diene-based polymer; and (C) a non-conjugated diene compound/non-conjugated olefin copolymer containing an ethylene-propylene-diene rubber.
    Type: Application
    Filed: February 27, 2012
    Publication date: December 5, 2013
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Junko Matsushita, Yasuo Horikawa, Shojiro Kaita, Olivier Tardif
  • Publication number: 20130316111
    Abstract: A composition comprising at least the following components: (A) a first composition comprising the following: i) a first interpolymer comprising, in polymerized form, ethylene, an ?-olefin, and a nonconjugated polyene; ii) a second interpolymer comprising, in polymerized form, ethylene, an ?-olefin and a nonconjugated polyene; and wherein the first composition has an MWD less than, or equal to, 3.5, a Mooney Viscosity (ML (1+4 @125° C.)) greater than, or equal to, 80, and an [(ML(1+4 @125° C.))/Mw(conv)]*1000 greater than 0.429 mole/g; (B) a thermoplastic polymer; and (C) a vulcanization agent is provided. A crosslinked composition made by heating one or more of the inventive compositions is also provided. Articles made from one or more of the inventive compositions are also provided.
    Type: Application
    Filed: December 29, 2011
    Publication date: November 28, 2013
    Inventors: Xiaosong Wu, Jose M. Rego, Kim L. Walton, Brian W. Walther, Michael D. Read
  • Patent number: 8592515
    Abstract: Pneumatic rubber tire with a component comprised of a silica reinforced rubber composition comprised of specialized polybutadiene rubber, functionalized styrene/butadiene elastomer and cis 1,4-polyisoprene rubber.
    Type: Grant
    Filed: May 31, 2011
    Date of Patent: November 26, 2013
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: William Paul Francik, John Joseph Andre Verthe, Junling Zhao, George Frank Balogh, Christin Louise Alwardt
  • Publication number: 20130289163
    Abstract: The invention relates to a functionalized diene elastomer composed: a) of a diene elastomer functionalized, at the chain end or in the middle of the chain, by a tin functional group, exhibiting a monomodal distribution of molecular weights before functionalization and a polydispersity index before functionalization of less than or equal to 1.3, b) of a diene elastomer star-branched with a tin compound, exhibiting a monomodal distribution of molecular weights before star-branching and a polydispersity index before star-branching of less than or equal to 1.3, and c) of a content of less than 15% by weight, with respect to the total weight of the functionalized diene elastomer, of a non-tin-functional diene elastomer, the said diene elastomers a), b) and c) being, before optional functionalization or optional star-branching, the same in nature.
    Type: Application
    Filed: November 23, 2011
    Publication date: October 31, 2013
    Applicants: Michelin Recherche Et Technique S.A., Compagnie Generale Des Etablissements Michelin
    Inventors: Mathilde Abad, Margarita Dorato, Jean-Michel Favrot, Nathalie Simon, Jean Marc Marechal, Stéphanie De Landtsheer
  • Patent number: 8557903
    Abstract: The present invention describes a composition comprising a diene-based rubber and at least one cyclo-aliphatic epoxide-based polyether or polyglycol ether. The present invention also describes a composition comprising at least one extending oil and at least one cyclo-aliphatic epoxide-based polyether or polyglycol ether, wherein the at least one extending oil is selected from the group consisting of an aromatic oil, an aliphatic oil, a naphthenic oil, and mixtures thereof.
    Type: Grant
    Filed: December 12, 2008
    Date of Patent: October 15, 2013
    Assignee: Styron Europe GmbH
    Inventors: Holger Mosinski, Hans Edel, Hagen Bartossek
  • Patent number: 8459319
    Abstract: This invention relates to a pneumatic tire with an outer, running surface containing, circumferential tread comprised of a styrene/butadiene (SBR) rich rubber composition containing two SBR's with spaced apart glass transition temperatures (Tg's), one of which is a functionalized SBR with a functional group reactive with hydroxyl groups on a precipitated silica, together with a combination of at least three resins with spaced apart softening points. The filler reinforcement is a combination of precipitated silica and specialized rubber reinforcing carbon black.
    Type: Grant
    Filed: August 31, 2009
    Date of Patent: June 11, 2013
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Jennifer Lyn Ryba, Paul Harry Sandstrom, Steven Wayne Cronin, Bret Herbert Marts
  • Patent number: 8426522
    Abstract: The copolymer rubber composition comprises 60 to 75% by weight of a copolymer rubber (1) and 40 to 25% by weight of a copolymer rubber (2), and [iodine value of the copolymer rubber (1)?iodine value of the copolymer rubber (2)] is 5 to 30. The copolymer rubber (1) is an ethylene-?-olefin-nonconjugated polyene copolymer rubber having an ethylene unit of 50 mol % to 70 mol %, an ?-olefin unit of 50 mol % to 30 mol %, and an iodine value of 15 to 45, and the copolymer rubber (2) is an ethylene-?-olefinic copolymer rubber having an ethylene unit of more than 70 mol % and 95 mol % or less, an ?-olefin unit of less than 30 mol % and 5 mol % or more, and an iodine value of 10 to 30.
    Type: Grant
    Filed: November 10, 2011
    Date of Patent: April 23, 2013
    Assignee: Sumitomo Chemical Company, Limited
    Inventor: Sadayuki Nakano
  • Patent number: 8361616
    Abstract: Aqueous adhesive containing, based on solid contents, ?20 to 80% by weight of an (meth)acrylic copolymer (A) as dispersion in water, ?10 to 50% by weight of a resin (B), ?5 to 30% by weight of a reaction product (C) of i) 20 to 50% based on dispersion (C) of an (meth)acrylic copolymer having an acidic number of 1-100 mg KOH/g in form of a dispersion, ii) 5 to 40% based on dispersion (C) of at least one sugar alcohol with a MN of 100 to 600 g/mol, and reacting the mixture in alkaline solution for 0.1 to 6 hours, and 0.1 to 30% by weight of one or more auxiliaries (D) wherein the sum A to D adds to 100%.
    Type: Grant
    Filed: February 15, 2010
    Date of Patent: January 29, 2013
    Assignee: Henkel AG & Co. KGaA
    Inventors: Nicholas de Calmes, Dario Cavalli, Amelie Colson, Sandrine Dallalibera
  • Publication number: 20130012660
    Abstract: The present invention provides a tire rubber composition with which the grip performance, the abrasion resistance, and the performance in terms of rolling resistance are improved in a balanced manner. The present invention relates to a tire rubber composition comprising: a modified diene rubber A which is modified with a specific acrylamide compound; and a modified diene rubber B which is modified with a specific modifying compound alone or together with a specific silicon or tin compound, a weight average molecular weight of a total of the modified diene rubbers A and B being 300,000 to 1,400,000.
    Type: Application
    Filed: July 5, 2012
    Publication date: January 10, 2013
    Inventor: Michio HIRAYAMA
  • Publication number: 20120316283
    Abstract: Elastomer compositions comprising uncured elastomer and reclaimed elastomer are described. In one embodiment, the compositions comprise reclaimed elastomer material (micronized rubber powder) of broad particle size distribution, which is less expensive than traditional reclaimed elastomer material with narrow particle size distribution. Further, compositions comprising reclaimed elastomer materials with broad particle size distribution perform comparably to those comprising reclaimed elastomer materials with narrow particle size distribution. In other embodiments, the compositions comprise both vulcanized and devulcanized elastomer materials. Advantageously, by using a combination of vulcanized and devulcanized material, it is possible to incorporate a greater percentage by weight of reclaimed material in to an elastomer composition, thus providing additional cost savings while maintaining high levels of mechanical properties.
    Type: Application
    Filed: June 8, 2012
    Publication date: December 13, 2012
    Inventors: Charles Rosenmayer, Frank Papp
  • Publication number: 20120309902
    Abstract: Disclosed are a polybutadiene having a controlled microstructure, a narrow molecular weight distribution, minimal gel content, and a low APHA color, a modified polybutadiene, producing methods for both, and a rubber-reinforced styrene resin composition using the same. The polybutadiene of the present invention is characterised in that the ratio (Tcp/ML1+4) of a 5% toluene melting viscosity (Tcp) measured at 25° C. and the Mooney viscosity (ML1+4) at 100° C. is 2.0 or higher, the molecular weight distribution (Mw/Mn) is 2.80 or less, the gel content is 0.06 wt % or less, and the APHA color is 20 or less.
    Type: Application
    Filed: February 21, 2011
    Publication date: December 6, 2012
    Applicant: UBE INDUSTRIES, LTD.
    Inventors: Yasuyoshi Okabe, Yuuji Matsudaira, Chaiyaket Vichuta, Toshiyuki Sakaguchi
  • Publication number: 20120258829
    Abstract: A power transmission belt is provided with a peroxide-cured, polybutadiene-based elastomeric composition. The elastomeric composition includes 100 parts of a rubber derived from 50 to 100 parts by weight of polybutadiene rubber; 0 to 50 parts by weight of at least one other rubber; about 1 to about 20 parts by weight per 100 parts by weight of total rubber (phr) of a type I coagent; about 1 to about 20 phr of a type II coagent; and about 0.1 to about 10 phr of a peroxide curing agent.
    Type: Application
    Filed: April 7, 2011
    Publication date: October 11, 2012
    Applicant: CARLISLE INTANGIBLE COMPANY
    Inventors: Kent H. Little, Daniel Virtue
  • Publication number: 20120252979
    Abstract: Blends of syndiotactic 1,2-polybutadiene and rubbery elastomers are prepared by a process that comprises polymerizing 1,3-butadiene monomer into syndiotactic 1,2-polybutadiene within a rubber cement of an elastomeric terpolymer by using a chromium-based, molybdenum-based, or iron-based catalyst composition. Polymer composition comprising the blend with improved properties is also provided.
    Type: Application
    Filed: November 28, 2011
    Publication date: October 4, 2012
    Inventors: Christine Rademacher, Steven Luo, Zhong-Ren Chen, Walter Tomaszewski, Edward Kelley
  • Publication number: 20120219814
    Abstract: Methods of improving polyethylene stretch film that include providing interpolymer resin particles, forming a polyethylene blend composition by blending from about 0.1 to about 10 percent by weight based on the weight of the blend composition of interpolymer resin particles into one or more polyethylene resins; and forming a film from the polyethylene blend composition. The interpolymer resin particles contain a styrenic polymer intercalated within a first polyolefin, where the first polyolefin is present at from about 20% to about 80% by weight based on the weight of the particles, and the styrenic polymer is present at from about 20% to about 80% by weight based on the weight of the particles.
    Type: Application
    Filed: February 14, 2012
    Publication date: August 30, 2012
    Applicant: NOVA CHEMICALS INC.
    Inventors: Eric Vignola, Daniel Purpura, Paul Tas, Jamie Marler, Shaun Pirtle
  • Publication number: 20120178848
    Abstract: The invention relates to the use of butyl ionomers or partially halogenated butyl ionomers in reducing a population of and/or preventing accumulation of organisms. The organisms may be bacteria, algae, fungi, mollusca or arthropoda. The invention also relates to coatings for shaped articles comprising the butyl ionomers.
    Type: Application
    Filed: February 5, 2010
    Publication date: July 12, 2012
    Applicant: LANXESS INC.
    Inventors: Dana Adkinson, Lorenzo P. Ferrari, J. Scott Parent, Ralph A. Whitney, Rui Resendes
  • Patent number: 8207386
    Abstract: Rubber-like or rubber-like-material-containing articles contain or are made from hydrogenated natural polyisoprenoids or modified products thereof. These rubber-like or rubber-like-material-containing articles include a rubber-like elastic article made from a hydrogenated natural polyisoprenoid or a modified product thereof. A polymer obtained by reacting a natural polyisoprenoid with hydrogen in a solvent in the presence of a hydrogenation catalyst, for example, can be used as the hydrogenated natural polyisoprenoid. The hydrogenated natural polyisoprenoid preferably has a degree of hydrogenation of 50% or more. The hydrogenated natural polyisoprenoid preferably has a weight-average molecular weight of 20×104 or more and a molecular-weight distribution of 2.0 or more. The rubber-like or rubber-like-material-containing articles have excellent heat resistance and weather resistance, and are also excellent in view of resources and environment, because they use plant-derived raw materials.
    Type: Grant
    Filed: December 1, 2004
    Date of Patent: June 26, 2012
    Assignees: Nitta Corporation, Shinichi Inoue
    Inventors: Shinichi Inoue, Tomohiro Nishio, Haruhiko Ito, Kenichi Horiuchi, Toshiaki Kasazaki
  • Publication number: 20120157568
    Abstract: The invention relates to a silica reinforced rubber composition comprised of low Tg polybutadiene, particularly high cis 1,4-polybutadiene or high trans 1,4-polybutadiene with or without functional groups, and high Tg styrene/butadiene elastomers, particularly functionalized styrene/butadiene, elastomers, together with high Tg liquid unsaturated conjugated diene-based polymer, particularly styrene/butadiene polymer, which can also be functionalized, and high glass transition or softening point temperature (Tm or Tg) resins, particularly high Tg styrene/alpha methylstyrene resin. The invention relates to a tire having a tread comprised of such rubber composition.
    Type: Application
    Filed: November 9, 2011
    Publication date: June 21, 2012
    Inventors: Paul Harry Sandstrom, Hans-Bernd Fuchs, Erik Paul Sandstrom, Michelle L. Sandstrom