Adding Nonreactive Material To Chemically Modified Solid Polymer Patents (Class 524/572)
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Patent number: 12037432Abstract: The present invention provides a method for preparing a modified and conjugated diene-based polymer, which may prevent processability degradation by restraining the increase of mooney viscosity during post-treatment using steam with high temperature or storage for a long time by stabilizing a modified polymer using a modification stabilizer, and a modified and conjugated diene-based polymer prepared by the preparation method.Type: GrantFiled: February 17, 2021Date of Patent: July 16, 2024Assignee: LG Chem, Ltd.Inventors: Ho Young Lee, No Ma Kim, Sang Mi Lee, Sun Keun Kim
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Patent number: 11945937Abstract: A modified conjugated diene-based polymer is produced by a method reacting a conjugated diene-based polymer having an active terminal, which is a polymer obtained by polymerizing a monomer including a conjugated diene compound in the presence of an alkali metal compound, with a compound [A] represented by formula (1). In formula (1), each of R1 and R2 represents a C1 to C8 hydrocarbyl group and the like; each of R5 and R6 represents a C1 to C8 hydrocarbyl group and the like; each of R3 and R4 represents a C1 to C6 hydrocarbylene group; R7 represents a C1 to C10 hydrocarbylene group; X1 represents a C1 to C4 hydrocarbyloxy group; each of X2 and X3 represent a C1 to C4 hydrocarbyl group or hydrocarbyloxy group; m is an integer of 1 to 3.Type: GrantFiled: February 28, 2020Date of Patent: April 2, 2024Assignee: ENEOS MATERIALS CORPORATIONInventors: Yoshiki Nonoyama, Masaaki Inoue
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Patent number: 11897971Abstract: A modified natural rubber includes a linking structure represented by general formula (C), the linking structure having been formed by allowing polyisoprene, having a structure represented by general formula (A) and/or general formula (B), to bind in the structure to an amino compound having two or more primary amino groups. In the formulae (A) and (B), X represents a hydrogen atom or a methyl group, and Ps represent a polyisoprene unit. In the formula (C), W represents a residue of the amino compound from which amino end groups are removed, and Q represents at least one selected from the group consisting of general formulae (Q-1) to (Q-4), and m represents 2 to 4. In the general formulae (Q-1) to (Q-4), *1 indicates binding to a carbon atom of a polyisoprene unit, and *2 indicates binding to a carbon atom of the residue represented by W.Type: GrantFiled: October 28, 2019Date of Patent: February 13, 2024Assignee: Toyo Tire CorporationInventors: Daiki Nakashima, Pranee Phinyocheep
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Patent number: 11655321Abstract: Provided is a modified conjugated diene-based polymer, a rubber composition and a tire with excellent low loss property and durability, and a method of producing a modified conjugated diene-based polymer with which the presently disclosed modified conjugated diene-based polymer can be produced. The modified conjugated diene-based polymer has two or more modifying groups in one modified conjugated diene-based polymer molecule, where the modifying groups between molecules have a non-covalent bond with energy of 10 kJ/mol to 250 kJ/mol. The rubber composition contains the modified conjugated diene-based polymer. The tire uses the rubber composition.Type: GrantFiled: August 31, 2018Date of Patent: May 23, 2023Assignee: BRIDGESTONE CORPORATIONInventors: Takatsugu Tanaka, Rika Fukushima
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Patent number: 11505624Abstract: The present invention relates to a rubber composition having excellent tensile properties and viscoelasticity properties and including a modified conjugated diene-based polymer. The rubber composition may include a modified conjugated diene-based polymer which is selected considering target tensile properties and viscoelasticity properties, by predicting in advance the correlation of the modification ratio of the modified conjugated diene-based polymer and the dynamic viscoelasticity loss coefficient at 60° C. of the rubber composition through Mathematical Formula 1 and Mathematical Formula 2. Therefore, excellent compounding properties may be shown.Type: GrantFiled: September 20, 2018Date of Patent: November 22, 2022Inventors: Jin Sook Ryu, Kyoung Hwan Oh, Woo Jin Cho, Suk Youn Kang, Sung Joon Oh, Sun Ok Oh
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Patent number: 11414510Abstract: The present invention relates to a modified conjugated diene-based polymer, and more particularly, to a modified conjugated diene-based polymer prepared by continuous polymerization and having a specific polymer structure and molecular weight distribution degree and shape, and thus, having remarkable processability and narrow molecular weight distribution, and thus, having excellent physical properties, and a rubber composition including the same.Type: GrantFiled: November 30, 2018Date of Patent: August 16, 2022Inventors: Jung Hwan Oh, You Seok Seo, Jae Hoon Choe, Min Soo Kim, No Ma Kim
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Patent number: 11414503Abstract: A modified conjugated diene-based polymer, including a coupling polymer, wherein a ratio of the coupling polymer, obtained by gel permeation chromatography (GPC), is 30% by mass or more and less than 70% by mass in the entire modified conjugated diene-based polymer, and a modification ratio obtained by adsorption GPC is 30% by mass or more and less than 70% by mass in the entire modified conjugated diene-based polymer, when a peak top molecular weight, obtained by the GPC, of the coupling polymer of the modified conjugated diene-based polymer is represented by Mp1 and a peak top molecular weight of a non-coupling polymer is represented by Mp2, (Mp1/Mp2)?3.4, and a shrinking factor (g?) is less than 0.60.Type: GrantFiled: August 7, 2017Date of Patent: August 16, 2022Assignee: Asahi Kasei Kabushiki KaishaInventors: Shinichi Sekikawa, Miki Kyo
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Patent number: 11345806Abstract: A resin composition contains: (A) an ethylene-vinyl alcohol copolymer, (B) a polyester resin, and (C) a sorbic acid ester; wherein the sorbic acid ester (C) is present in an amount of 0.00001 to 10 ppm based on the weight of the resin composition. The resin composition exhibits excellent thermal degradation resistance reduced susceptibility to coloration.Type: GrantFiled: April 30, 2020Date of Patent: May 31, 2022Assignee: MITSUBISHI CHEMICAL CORPORATIONInventors: Shintaro Usui, Minako Ikeshita
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Patent number: 11312843Abstract: The invention relates to bissilylaminosilyl-functionalized conjugated dienes and their use in the production of rubbers. Further, the invention relates to rubbers and rubber compositions.Type: GrantFiled: July 31, 2018Date of Patent: April 26, 2022Assignees: SYNTHOS DWORY 7 SPOLKA Z OGRANICZONA ODPOWIEDZIALNOSCIA SPOLKA JAWNA, SYNTHOS S.AInventors: Maria Siolek-Komorek, Radoslaw Kozak, Pawel Weda, Robert Bogacz, Tomasz Skrok, Dawid Bartus, Malgorzata Walenia
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Patent number: 11225534Abstract: A modified conjugated diene-based polymer according to the present invention has a weight average molecular weight of 20×104 or more and 300×104 or less, has a molecular weight distribution Mw/Mn of 1.6 or more and 4.0 or less, has a modification ratio of 30% by mass or more and 80% by mass or less with respect to a total amount of the conjugated diene-based polymer, and includes 5% by mass or more and 50% by mass or less of a component having a molecular weight of 1,000,000 or more and 5,000,000 or less in GPC (gel permeation chromatography), wherein a modification ratio of the component having a molecular weight of 1,000,000 or more and 5,000,000 or less is 90% by mass or more and 100% by mass or less.Type: GrantFiled: April 26, 2018Date of Patent: January 18, 2022Assignee: Asahi Kasei Kabushiki KaishaInventors: Koichi Hasebe, Ryo Suzuki, Hiromi Nakafutami
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Patent number: 10995163Abstract: A modified conjugated diene-based polymer and a rubber composition including the same are disclosed herein. In some embodiments, a modified conjugated diene-based polymer includes a 1,2-vinyl bond content of 30.0 wt % or less with respect to a total weight of the modified conjugated diene-based polymer, wherein the polymer has a glass transition temperature of ?90° C. to ?50° C., a mooney viscosity of 50 to 100 measured by ASTM D1646, polydispersity index (PDI) of 1.5 to 3.5, and a mooney relaxation ratio of 0.7 or less when measured at 110° C.Type: GrantFiled: July 11, 2019Date of Patent: May 4, 2021Inventors: Ro Mi Lee, Tae Chul Lee, No Ma Kim, Youk Reol Na
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Patent number: 10968302Abstract: The present invention provides a method for preparing a modified and conjugated diene-based polymer, which may prevent processability degradation by restraining the increase of mooney viscosity during post-treatment using steam with high temperature or storage for a long time by stabilizing a modified polymer using a modification stabilizer, and a modified and conjugated diene-based polymer prepared by the preparation method.Type: GrantFiled: June 12, 2017Date of Patent: April 6, 2021Inventors: Ho Young Lee, No Ma Kim, Sang Mi Lee, Sun Keun Kim
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Patent number: 10913805Abstract: The present invention relates to a modifier useful for the modification of a conjugated diene-based polymer, having excellent affinity with a filler, and capable of improving the compounding properties of a conjugated diene-based polymer, a method for preparing the same, a modified conjugated diene-based polymer including the modifier, and a method for preparing the polymer.Type: GrantFiled: July 13, 2018Date of Patent: February 9, 2021Inventors: Min Sik Mun, Da Won Chai, Ho Young Lee
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Patent number: 10882968Abstract: The present disclosure provides a linear polypropylene foam with, for example, low density and/or high expansion ratio, said linear polypropylene foam comprising at least one polypropylene, at least one alpha nucleating agent, and at least one beta nucleating agent. The present disclosure also provides compositions and processes for making said linear polypropylene foam.Type: GrantFiled: May 1, 2017Date of Patent: January 5, 2021Assignee: LCY CHEMICAL CORPORATIONInventor: Chiang Hsiang Lin
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Patent number: 10822446Abstract: A modified conjugated diene polymer satisfying the following conditions (I) to (IV): (I) at least two peaks are observed in a molecular weight distribution curve; (II) when a peak of the highest molecular weight is defined as a peak (B), a peak of the largest peak area except for the peak (B) is defined as a peak (T), a peak molecular weight of the peak (B) is from 500,000 to 2,500,000 and a peak molecular weight of the peak (T) is from 150,000 to 600,000; (III) an area of the peak (T) is from 30% to 80% and a total value of an area of the peak (B) and the area of the peak (T) is 65% or more; and (IV) a proportion of a modified polymer chain(s) in a region ranging from a low-molecular-weight side to a point of 5% cumulative area is from 60% to 99%.Type: GrantFiled: September 1, 2017Date of Patent: November 3, 2020Assignee: Japan Elastomer Co., Ltd.Inventors: Atsushi Yasumoto, Hideki Yamasaki
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Patent number: 10766972Abstract: The present invention provides a modified conjugated diene-based polymer, wherein the Mooney stress-relaxation rate measured at 110° C. is 0.45 or less, and the modification percentage is 75% by mass or more.Type: GrantFiled: February 19, 2016Date of Patent: September 8, 2020Assignee: Asahi Kasei Kabushiki KaishaInventors: Chigusa Yamada, Yukio Yamaura, Kenta Hisamura, Junichi Yoshida
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Patent number: 10692820Abstract: A hybrid composite film, a method of fabricating the hybrid composite film, and an integrated circuit device including the hybrid composite film, the hybrid composite film including a polymer film; and a plurality of organic-inorganic composite particles dispersed in the polymer film, wherein each particle of the plurality of organic-inorganic composite particles includes an inorganic particle and an organic capping layer surrounding the inorganic particle, the organic capping layer having a hydroxyl group-terminated end.Type: GrantFiled: November 21, 2018Date of Patent: June 23, 2020Assignees: SAMSUNG ELECTRONICS CO., LTD., Industry-Academic Cooperation Foundation, Yonsei UniversityInventors: Seung-won Kim, Jun-won Han, Yeon-woo Kim, Hye-yun Park, Cheol-sang Yoon, Kangtaek Lee, Hyungjoon Jeon, Young-Geon Song
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Patent number: 10633561Abstract: The present specification provides an adhesive composition for optical use, including a polybutadiene rubber having a reactive group including one or more selected from the group consisting of a hydroxy group and a (meth)acrylate group, the reactive group bonded to a main chain thereof, and an adhesive film for optical film, including an adhesive layer including a photocured product of the adhesive composition for optical use.Type: GrantFiled: April 21, 2017Date of Patent: April 28, 2020Assignee: LG Chem, Ltd.Inventors: Kwang Su Seo, Joo Hyun Lee, Chan Oh Yoon, Jang Soon Kim
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Patent number: 10618037Abstract: A method for recovering a catalyst, wherein a solution containing a reaction mixture obtained by performing a hydrogenation reaction in a presence of a catalyst containing a platinum group metal is brought into contact with a fiber membrane having a group containing an amino group or a thiol group on a surface, thereby recovering the platinum group metal included in the solution is provided.Type: GrantFiled: May 25, 2016Date of Patent: April 14, 2020Assignee: ZEON CORPORATIONInventors: Akito Nakai, Kazunori Furukawa
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Patent number: 10533062Abstract: The present invention provides a modified conjugated diene-based polymer which includes a functional group derived from a substituted styrene-based compound and a functional group derived from an aminosilane-based compound, a method for preparing the same, and a rubber composition including the same. The modified conjugated diene-based polymer includes the functional group derived from an aminosilane-based compound of Formula 1 and a functional group derived from a substituted styrene-based compound of Formula 2 at both terminals of a main chain, and thus, shows a high modification ratio. When applying the polymer in a rubber composition, excellent affinity with a filler may be shown, and as a result, agglomeration of a filler in the rubber composition may be prevented, and the dispersibility of the filler may be increased, thereby improving the processability of the rubber composition.Type: GrantFiled: April 17, 2017Date of Patent: January 14, 2020Assignee: LG Chem, Ltd.Inventors: Hae Sung Sohn, No Ma Kim, Jin Young Kim, Kyung Chang Seo, Sang Mi Lee
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Patent number: 10519254Abstract: The present invention provides a modified conjugated diene-based polymer having a weight-average molecular weight of 20×104 or more and 300×104 or less, in which the modified conjugated diene-based polymer having a molecular weight of 200×104 or more and 500×104 or less is comprised in an amount of 0.25% by mass or more and 30% by mass or less based on a total amount of the modified conjugated diene-based polymer, and a shrinking factor (g?) is less than 0.64.Type: GrantFiled: February 18, 2016Date of Patent: December 31, 2019Assignee: Asahi Kasei Kabushiki KaishaInventors: Miki Kyo, Shinichi Sekikawa, Hiromi Nakafutami
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Patent number: 10450387Abstract: The present invention relates to a modifier and a modified and conjugated diene-based polymer including a functional group derived therefrom, and more particularly, provides a modifier including a compound represented by Formula 1, a modified and conjugated diene-based polymer including a functional group derived from the modifier and a repeating unit derived from a conjugated diene-based monomer, and methods for preparing them. In Formula 1, the definition of each substituent is the same as defined in the description of the invention.Type: GrantFiled: July 21, 2017Date of Patent: October 22, 2019Assignee: LG Chem, Ltd.Inventors: Seong Du Lee, No Ma Kim, He Seung Lee, Hyoung Woo Lee
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Patent number: 10428161Abstract: Studies have been made for the purpose of achieving both the improvement in the storage stability of a solution-polymerized diene rubber that is modified with an alkoxysilane compound and the improvement in the physical properties of the diene rubber when blended with silica. Thus, a production method whereby it becomes possible to produce a modified solution-polymerized diene rubber having good storage stability and high reactivity with silica is developed, by introducing several tens percent of a three blanched or four blanched component that has been coupled with a tin compound into a modified solution-polymerized diene rubber, then coagulating the resultant alkoxysilane modified diene rubber with steam and then drying the coagulated product.Type: GrantFiled: September 18, 2015Date of Patent: October 1, 2019Assignee: ERIC Inc.Inventors: Iwakazu Hattori, Hisao Ono
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Patent number: 10421767Abstract: The present invention relates to novel aminosilane-functionalized diene compounds of the following Formula I: wherein each R? is independently selected from C1-C12 alkyl, C6-C18 aryl, C7-C18 alkylaryl, tri(C1-C6 alkyl, C6-C12 aryl or C7-C18 alkylaryl)silyl and allyl, wherein two R? groups may be connected to form a ring and the ring may contain, further to the Si-bonded nitrogen atom, one or more of an oxygen atom, a nitrogen atom, an >N(C1-C6 alkyl or C7-C18 alkylaryl) group and a sulfur atom; each R? is independently selected from C1-C6 hydrocarbyl; Ra, Rb, Rc, Rd and Re are independently selected from hydrogen, methyl and ethyl; x is an integer selected from 0, 1 and 2, y is an integer selected from 1, 2 and 3 and x+y=3. The diene compounds are useful as modifying monomers in the polymerization of conjugated diene monomers.Type: GrantFiled: October 17, 2016Date of Patent: September 24, 2019Assignee: TRINSEO EUROPE GMBHInventors: Natja Park, Michael Rossle, Sven Thiele, Daniel Heidenreich, Benjamin Gutschank
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Patent number: 10414841Abstract: The present disclosure relates to a modified conjugated diene-based polymer having excellent affinity with a filler, a method for preparing the same, a rubber composition including the same and a tire manufactured using the rubber composition. The modified conjugated diene-based polymer according thereto has a tin-based compound-derived group bind on one end, and a silane-based compound-derived group bind on the other end, and therefore, may have excellent affinity with a carbon black-based filler as well as a silica-based filler. Accordingly, a rubber composition including the modified conjugated diene-based polymer may have excellent processability, and as a result, processed goods (for example, tires) manufactured using the rubber composition may have excellent tensile strength, wear resistance and viscoelastic property.Type: GrantFiled: October 7, 2016Date of Patent: September 17, 2019Assignee: LG Chem, Ltd.Inventors: Moon Seok Chun, Soo Yong Lee, Seong Du Lee, No Ma Kim, Kyung An Kwon
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Patent number: 10316121Abstract: A method for preparing cis-1,4-polydienes having useful resistance to cold flow, the method comprising the steps of preparing a polymerization system including a reactive polymer by introducing a lanthanide-based catalyst and a conjugated diene monomer and adding a Lewis acid to the polymerization system including a reactive polymer.Type: GrantFiled: January 28, 2016Date of Patent: June 11, 2019Assignee: Bridgestone CorporationInventor: Joshua S. Dickstein
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Patent number: 10233265Abstract: Disclosed are a modified conjugated diene polymer and a method for preparing the same. The modified conjugated diene polymer and the method for preparing the same advantageously provide superior compatibility with an inorganic filler, heat generation, tensile strength and abrasion resistance, low fuel consumption and excellent resistance on wet roads.Type: GrantFiled: November 21, 2016Date of Patent: March 19, 2019Assignee: LG CHEM, LTD.Inventors: Ro Mi Lee, Sang Mi Lee, Choon Hwa Lee, Byung Hoon Yoon, Jin Young Kim, Moon Seok Chun
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Modified natural rubber, process for producing same, rubber composition for tire, and pneumatic tire
Patent number: 10131763Abstract: The present invention provides a modified natural rubber having a good balance of improved fuel economy, heat-aging resistance, processability, and breaking resistance, and a method for producing such a rubber. The present invention also provides a tire rubber composition and a pneumatic tire which are prepared using the modified natural rubber. The present invention relates to a highly purified, modified natural rubber whose pH is adjusted to 2 to 7.Type: GrantFiled: December 2, 2013Date of Patent: November 20, 2018Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.Inventors: Toshiaki Sakaki, Hirotoshi Otsuki, Yuka Yokoyama, Tatsuya Miyazaki, Ryo Mashita -
Patent number: 10086651Abstract: Provided are a rubber composition that shows a balanced improvement in fuel economy, abrasion resistance, and wet grip performance while having good processability, and a pneumatic tire including a tread formed from the rubber composition. The present invention relates to a rubber composition containing: a copolymer synthesized by copolymerization of a conjugated diene monomer and a compound represented by the formula (1) below; and carbon black and/or silica, wherein R11 and R12 are the same as or different from each other and each represent a hydrogen atom or a C1-C30 hydrocarbon group.Type: GrantFiled: July 29, 2014Date of Patent: October 2, 2018Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.Inventors: Toshifumi Haba, Koji Fujisawa, Gen Higa, Satoko Kitamura, Takahiro Mabuchi, Kazuya Torita
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Patent number: 10023661Abstract: Disclosed are a modified conjugated diene-based polymer, a method of preparing the same, and a rubber composition including the same.Type: GrantFiled: September 18, 2015Date of Patent: July 17, 2018Assignee: LG Chem, Ltd.Inventors: Jin-Young Kim, Ro-Mi Lee, No-Ma Kim
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Patent number: 9951167Abstract: A modified conjugated diene-based polymer is produced that is a modified product of a conjugated diene-based polymer obtained by polymerizing a conjugated diene compound, or polymerizing a conjugated diene compound and an aromatic vinyl compound, in the presence of an alkali metal compound or an alkaline-earth metal compound. The modified conjugated diene-based polymer is produced by a production method that includes a main chain modification step that reacts at least either an unsaturated bond or a functional group that is included in a terminal-modified polymer and is not situated at a terminal of the terminal-modified polymer, with a specific compound that includes a functional group that interacts with silica, the terminal-modified polymer being obtained by introducing a functional group that interacts with silica into at least one terminal of the conjugated diene-based polymer.Type: GrantFiled: July 18, 2013Date of Patent: April 24, 2018Assignee: JSR CORPORATIONInventors: Takahiro Kawai, Hiroyuki Morita, Takeshi Yuasa, Koichiro Tani, Koji Okada, Ryoji Tanaka, Masahiro Shibata, Shigeru Abe
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Patent number: 9920184Abstract: A production method for a rubber composition, comprising: using an internal mixer to mix/disperse a rubber wet masterbatch containing a carbon black, a hydrazide compound, an antiaging agent, and sulfur, wherein a timing when the hydrazide compound is charged into the internal mixer is not the same timing when the antiaging agent is charged thereinto but the same timing when the component sulfur is charged thereinto.Type: GrantFiled: May 7, 2014Date of Patent: March 20, 2018Assignee: TOYO TIRE & RUBBER CO., LTD.Inventor: Norio Minouchi
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Patent number: 9732165Abstract: Provided are a rubber composition for tires that shows a balanced improvement in properties such as fuel economy, processability, heat aging resistance, abrasion resistance, wet-grip performance, performance on snow and ice, and handling stability, and a pneumatic tire formed from the rubber composition.Type: GrantFiled: November 27, 2014Date of Patent: August 15, 2017Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.Inventors: Toshiaki Sakaki, Akira Minagoshi, Yuka Yokoyama
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Patent number: 9695256Abstract: Disclosed is a method of preparing a modified conjugated diene-based polymer, including (a) polymerizing a conjugated diene monomer, or a conjugated diene monomer and an aromatic vinyl monomer, using the compound represented by Chemical Formula 1 in the presence of a solvent, thus obtaining an active polymer having a metal end, and (b) modifying the active polymer with the compound represented by Chemical Formula 2.Type: GrantFiled: October 17, 2014Date of Patent: July 4, 2017Assignee: LG Chem, Ltd.Inventors: Sangmi Lee, Noma Kim, Romi Lee, Jinyoung Kim, Youkreol Na
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Patent number: 9644045Abstract: Disclosed are a modified conjugated diene-based polymer represented by Chemical Formula 1, a method of preparing the same, and a rubber composition including the same.Type: GrantFiled: October 16, 2014Date of Patent: May 9, 2017Assignee: LG Chem, Ltd.Inventors: Yujin Kim, Romi Lee, Noma Kim
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Patent number: 9593228Abstract: The invention relates to functionalized diene rubbers with trimethylolpropane and fatty acid, to a process for production there of and use thereof for the production of wet-skid-resistant and low-rolling-resistance motor-vehicle tire treads with high abrasion resistance.Type: GrantFiled: May 14, 2010Date of Patent: March 14, 2017Assignee: ARLANXEO Deutschland GmbHInventors: Norbert Steinhauser, Heike Kloppenburg, David Hardy, Alex Lucassen, Dietmar Hoff, Michaela Meiers
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Patent number: 9540472Abstract: Disclosed are a modified conjugated diene polymer and a method for preparing the same. The modified conjugated diene polymer and the method for preparing the same advantageously provide superior compatibility with an inorganic filler, heat generation, tensile strength and abrasion resistance, low fuel consumption and excellent resistance on wet roads.Type: GrantFiled: February 4, 2013Date of Patent: January 10, 2017Assignee: LG Chem, Ltd.Inventors: Ro Mi Lee, Sang Mi Lee, Choon Hwa Lee, Byung Hoon Yoon, Jin Young Kim, Moon Seok Chun
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Patent number: 9284433Abstract: The present invention provides a rubber composition that enables to improve the fuel economy, wet-grip performance, abrasion resistance, and processability in a balanced manner, and a pneumatic tire including the rubber composition. The present invention relates to a rubber composition containing silica and a conjugated diene polymer, the conjugated diene polymer being obtained by reacting a compound containing a nitrogen atom and/or a silicon atom with an active end of a copolymer obtained by polymerizing a monomer component including a conjugated diene compound and a silicon-containing vinyl compound using a polymerization initiator represented by the following formula (I): wherein an amount of the conjugated diene polymer is not more than 90% by mass based on 100% by mass of a rubber component of the rubber composition, and an amount of the silica is 10 to 150 parts by mass per 100 parts by mass of the rubber component.Type: GrantFiled: May 24, 2012Date of Patent: March 15, 2016Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.Inventors: Ryuichi Tokimune, Yuko Hinohara
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Patent number: 9233364Abstract: Embodiments of the present disclosure provide for multimetallic assemblies, methods of making a multimetallic assembly, methods of oxidizing water, methods of O-atom transfer catalysis, and the like.Type: GrantFiled: April 25, 2013Date of Patent: January 12, 2016Assignee: UNIVERSITY OF FLORIDA RESEARCH FOUNDATION, INC.Inventors: Leslie Justin Murray, Gary Louis Guillet, Gianna Nadine Di Francesco, Jesse B. Gordon
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Patent number: 9221964Abstract: Provided are: a rubber composition achieving balanced improvement in fuel economy, abrasion resistance, and processability, and a pneumatic tire including the composition. The rubber composition includes: a conjugated diene polymer; silica; and a silane coupling agent, the polymer being obtained by polymerizing a monomer component including a conjugated diene compound and a silicon-containing vinyl compound in the presence of a polymerization initiator of formula (I): to produce a copolymer, and reacting a compound containing nitrogen and/or silicon atoms with an active terminal of the copolymer, wherein the rubber composition contains the conjugated diene polymer in an amount of 5-45% by mass per 100% by mass of a rubber component, the silica in an amount of 5 to 100 parts by mass per 100 parts by mass of the rubber component, and the coupling agent in an amount of 2-12 parts by mass per 100 parts by mass of the silica.Type: GrantFiled: June 26, 2012Date of Patent: December 29, 2015Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.Inventors: Shuichiro Ono, Katsumi Terakawa, Ryuichi Tokimune
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Patent number: 9193807Abstract: A method for producing a modified conjugated diene-based polymer having a good balance between the hysteresis loss properties and the wet skid resistance, practically sufficient abrasion resistance and breaking strength, and high processability when formed into a vulcanized product is provided. A method for producing a modified conjugated diene-based polymer, comprising: a polymerization step of polymerizing a conjugated diene compound, copolymerizing conjugated diene compounds, or copolymerizing a conjugated diene compound with an aromatic vinyl compound using an alkali metal compound or an alkaline earth metal compound as a polymerization initiator to obtain a conjugated diene-based polymer having an active end, and a modifying step of reacting a compound represented by following formula (1) with the active end of the conjugated diene-based copolymer.Type: GrantFiled: April 15, 2011Date of Patent: November 24, 2015Assignee: Asahi Kasei Chemicals CorporationInventors: Shinichi Sekikawa, Junichi Yoshida, Takaaki Matsuda
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Publication number: 20150148477Abstract: The present invention is directed to a functionalized elastomer comprising the reaction product of a living anionic elastomeric polymer and a polymerization terminator of formula I wherein R1 is C1 to C4 linear or branched alkanediyl; Z is R2, —OR3, or —R4—X; R2, R3 are independently C1 to C18 linear or branched alkyl; R4 is C1 to C18 alkanediyl; X is halogen or a group of structure II, III, IV, V or VI wherein R5, R6, R7, R8, and R9 are independently H or C1 to C8 alkyl; R10 is C2 to C8 alkanediyl; R11 and R12 are independently H, aryl or C1 to C8 alkyl; Q is N or a group of structure VII wherein R13 is C1 to C8 alkyl.Type: ApplicationFiled: November 25, 2013Publication date: May 28, 2015Applicant: The Goodyear Tire & Rubber CompanyInventors: Liqing Ma, Frank Schmitz, Nicola Costantini, Georges Marcel Victor Thielen, Michael Joseph Rachita
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Patent number: 9023937Abstract: A method for producing a rubber composition, the method comprising a step of producing a pre-kneaded rubber composition by kneading a butadiene-based rubber and 1 to 20 parts by weight of a silane coupling agent per 100 parts by weight of the butadiene-based rubber and a step of kneading the pre-kneaded rubber composition and 30 to 200 parts by weight of a silica per 100 parts by weight of the butadiene-based rubber used for producing the pre-kneaded rubber composition.Type: GrantFiled: May 30, 2012Date of Patent: May 5, 2015Assignee: Sumitomo Chemical Company, LimitedInventors: Takuya Sudo, Hisakatsu Hama
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Patent number: 9000109Abstract: A process for polymerization of a polymer containing monomeric units derived from a styrene monomer and a 1,3-butadiene monomer includes polymerizing the monomeric units in the presence of an initiator, a first polar agent, and a second polar agent. The first polar agent includes a structure (I): R1?R2?N-Q-NR3?R4?; and the second polar agent comprises a structure (II): R1?, R2?, R3?, and R4? are each independently selected from the group consisting of an alkyl group and hydrogen; Q contains an alkylene group; R1 and R2 are each independently an alkyl group; and R3, R4, R5, R6, R7 and R8 are each independently selected from the group consisting of an alkyl group and hydrogen. Polymers prepared by the above process are described, as are compositions containing such a polymer, and articles containing at least one component formed from such a composition.Type: GrantFiled: March 1, 2012Date of Patent: April 7, 2015Assignee: Styron Europe GmbHInventors: Evemarie Hamann, Silvia Valenti, Karin Schmiedel
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Patent number: 8993669Abstract: The present invention is directed to a functionalized elastomer comprising the reaction product of a living anionic elastomeric polymer and a polymerization terminator of formula I wherein R1, R2, R3, R4, and R5 are as defined. The invention is further directed to a rubber composition including the functionalized elastomer, and a pneumatic tire including the rubber composition.Type: GrantFiled: March 28, 2012Date of Patent: March 31, 2015Assignee: The Goodyear Tire & Rubber CompanyInventors: Leena Nebhani, Michael Joseph Rachita
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Publication number: 20150087768Abstract: An elastomeric polymer composition formed from a reaction product of a living anionic elastomeric polymer and sulfur containing chain end modifier with the general formula: (RO)x(R)ySi—R?—S—Z wherein O is oxygen, x is an integer selected from 1, 2 and 3; y is an integer selected from 0, 1, and 2; x+y=3, R is the same or different and is: (C1-C16) alkyl; R? is an aryl, an alkylaryl, a (C7-C16) alkyl aryl, or a (C1-C16) alkyl which may be linear or branched, saturated or unsaturated and may be substituted with: (C1-C4) alkyl, (C1-C4) alkoxy, (C7-C16) aryl, (C7-C16) aralkyl, nitrile, amine, NO2, thioalkyl; and Z is a protective group. Methods are described for making the elastomeric polymer composition, their use in preparing vulcanized elastomeric compositions, and articles made from such compositions, including pneumatic tires, tire treads, belts, and the like.Type: ApplicationFiled: September 23, 2013Publication date: March 26, 2015Applicant: STYRON EUROPE GMBHInventors: Sven Thiele, Joachim Kiesekamp, Norbert Jantsch, Thomas Knispel
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Publication number: 20150086735Abstract: A process for the continuous preparation of modified elastomeric polymers includes (i) providing and polymerizing at least one conjugated diene monomer and, optionally, one or more aromatic vinyl monomer in the presence of an anionic initiator and a compound according to Formula I, e.g. 2,2-di-(2-oxolanyl)propane or a derivative thereof, to provide a living anionic polymer; and (ii) adding a “sulfanylsilane” compound to the living anionic polymer. Elastomeric polymers obtainable according to the above process and compositions including the elastomeric polymer and, optionally, further constituents such as oil, filler and/or vulcanizing agent are described. A process for the preparation of a cross-linked elastomeric polymer that includes adding a vulcanizing agent to the elastomeric polymer, as well as articles and compositions that include the elastomeric polymer, the cross-linked elastomeric polymer or both are described.Type: ApplicationFiled: March 20, 2012Publication date: March 26, 2015Inventors: Silvia Valenti, Evemarie Hamann, Norbert Jantsch, Sven Thiele
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Patent number: 8987371Abstract: Functionalized multi-arm polymers which comprise the reaction product of a coupling agent and a polymer synthesized by anionic polymerization. Furthermore, the invention relates to their preparation method and their different uses, especially as hot-melt adhesives.Type: GrantFiled: December 10, 2009Date of Patent: March 24, 2015Assignee: Dynasol Elastomeros, S.A.Inventors: Sergio Corona Galvan, Rafael Polo Abad, Ma Dolores Parellada, Alejandro Claudio Esquivel De La Garza
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Patent number: 8987372Abstract: The present invention is directed to adhesives suitable for application using a hot melt process at a relatively low temperature in the range of about 110° C. to about 130° C. Such adhesives exhibit desirable viscoelastic properties and are suitable for bonding an elastic attachment in the manufacture of disposable articles, such as disposable diapers.Type: GrantFiled: March 15, 2013Date of Patent: March 24, 2015Assignee: Henkel US IP & Holding GmbHInventors: Yuhong Hu, Maria Xenidou
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Publication number: 20150065647Abstract: There is disclosed a functionalized elastomer comprising the reaction product of (1) a living anionic elastomeric polymer comprising units derived from divinylbenzene and a monomer comprising isoprene; and (2) a polymerization terminator of formula Q-(CH2)XSi(OR1)YR23-Y, wherein Q is R3CH?N— or (R4)2N—; R3 represents a group consisting of an aryl or substituted aryl having 6 to 18 carbon atoms, or a heterocycle or heteroaryl having 3 to 18 carbon atoms; R4 independently represents an alkyl group having from 1 to 6 carbon atoms; R1 and R2 each independently represents a group having 1 to 18 carbon atoms selected from the group consisting of an alkyl, a cycloalkyl, an allyl, and an aryl; X is an integer from 1 to 20; and Y is an integer from 1 to 3; wherein units derived from the terminator are exclusively disposed adjacent to units derived from the divinylbenzene. There is further disclosed a rubber composition comprising the functionalized elastomer, and a pneumatic tire comprising the rubber composition.Type: ApplicationFiled: August 12, 2014Publication date: March 5, 2015Inventors: Tang Hong Wong, Byoung Jo Lee, Carolin Anna Welter