161 |
METHOD OF PRODUCTION OF MODIFIED CONJUGATED DIENE RUBBER |
US15553295 |
2016-02-25 |
US20180016362A1 |
2018-01-18 |
Takeshi SUGIMURA |
A method of production of modified conjugated diene rubber includes causing an aromatic compound having three or more carbon atoms directly bonded to an aromatic ring in one molecule to react with an alkali metal atom so as to obtain an alkali metal-reacted aromatic compound; polymerizing a monomer at least containing a conjugated diene compound by using the alkali metal-reacted aromatic compound so as to obtain a conjugated diene rubber having an active end; causing the active end of the conjugated diene rubber having an active end to react with an activity control agent so as to obtain a conjugated diene rubber reacted with an activity control agent; and causing the active end of the conjugated diene rubber reacted with an activity control agent to react with a modifier having an alkoxy group and a halogen atom-containing group so as to obtain a modified conjugated diene rubber. |
162 |
Diene elastomer modified by coupling having silanol functions, synthesis method for same, and rubber composition comprising modified diene elastomer |
US14910233 |
2014-07-11 |
US09856330B2 |
2018-01-02 |
Charlotte Dire; Jean-Marc Marechal; Margarita Dorato |
The present invention relates to a modified diene elastomer predominantly comprising a species coupled via a group bearing a function comprising a silicon atom predominantly hydrolyzed into silanol and a tertiary amine function, linked to the diene elastomer via the silicon atom, and to the process for synthesizing the modified diene elastomer. This elastomer has the particular feature of not undergoing any change in Mooney viscosity during its storage. |
163 |
Polymers functionalized with heterocyclic imines |
US14776996 |
2014-03-07 |
US09850328B2 |
2017-12-26 |
Steven Luo; Joshua S. Dickstein; Joshua P. Abell |
A method for preparing a functionalized polymer, the method comprising the steps of: (i) polymerizing monomer to form a reactive polymer, and (ii) reacting the reactive polymer with an imine compound containing a heterocyclic group and a hydrocarbyloxy-substituted or silyloxy-substituted aryl group. |
164 |
Modified conjugated diene-based polymer, preparation method therefor, and rubber composition containing same |
US15121848 |
2015-12-11 |
US09834620B2 |
2017-12-05 |
He-Seung Lee; No-Ma Kim; Hae-Sung Sohn |
Disclosed are a modified conjugated diene-based polymer represented by specific Chemical Formula, a method of preparing the same, and a rubber composition including the same. |
165 |
Insulation System |
US15515770 |
2015-09-22 |
US20170301429A1 |
2017-10-19 |
Peter Groeppel; Daniel Mach; Michael Nagel; Gerhard Piecha; Christian Triebel; Matthias Uebler |
The present disclosure relates to insulation systems. Embodiments thereof may include a formulation for an insulation system used as casting resin and/or pressing resin as conductor and/or wall insulation for current-carrying conductors in generators, motors, and/or rotating machines. Some embodiments may include a material for use in an insulation system including: a base resin having one or more isotropic spherical filler fractions; wherein one of the one or more filler fractions comprises nanofiller particles comprising inorganic-organic particles; wherein both an inorganic fraction and an organic fraction are always simultaneously present; and the nanofiller particles comprise up to 25% by weight in the material. |
166 |
Functionalized polymer, rubber composition, and pneumatic tire |
US15251624 |
2016-08-30 |
US09790289B1 |
2017-10-17 |
Liqing Ma; Margaret McGuigen Vielhaber |
The present invention is directed to a functionalized elastomer comprising the reaction product of a living elastomeric polymer and a polymerization terminator of formula I, wherein the functionalized elastomer comprises repeat units of a diene monomer and optionally a vinyl aromatic monomer, and the functionalized elastomer comprises at least 92 percent by weight of cis 1,4 microstructure content based on the weight of the polydiene content of the functionalized elastomer wherein R1 is C1 to C4 linear alkyl, or C1 to C4 branched alkanediyl; X1, X2, X3 are independently O, S, or a group of formula (II) or (III) where R2 is C1 to C18 linear or branched alkyl; Z is R3, —OR4, or —R5—X4; R3, R4 are independently C1 to C18 linear or branched alkyl; R5 is C1 to C18 alkanediyl or dialkyl ether diyl; X4 is halogen or a group of structure IV, V, VI, VII or VIII wherein R6, R7, R8, R9, and R10 are independently H or C1 to C8 alkyl; R11 is C2 to C8 alkanediyl; R12 and R13 are independently H, aryl or C1 to C8 alkyl; Q is N or a group of structure IX wherein R14 is C1 to C8 alk. |
167 |
PNEUMATIC TIRE |
US15469869 |
2017-03-27 |
US20170291450A1 |
2017-10-12 |
Suguru IZUMO; Ryoji KOJIMA |
There is provided a pneumatic tire having improved wet grip performance and fuel efficiency in a good balance. The pneumatic tire is provided with a tread composed of a rubber composition comprising not less than 0.5 part by mass of silica and not less than 5 parts by mass of a resin based on 100 parts by mass of a rubber component comprising 40 to 100% by mass of a styrene-butadiene rubber and 0 to 60% by mass of a butadiene rubber, wherein an adhesive force of the rubber composition measured by the specified adhesion test method is not less than 300 when an adhesive force of a reference rubber composition wherein the whole amount of resin has been replaced by oil is assumed to be 100, and a ratio of a loss tangent tan δ0° C. at 0° C. of the rubber composition to a loss tangent tan δ70° C. at 70° C. of the rubber composition (tan δ0° C./tan δ70° C. is from 3.0 to 10. |
168 |
MODIFIED BUTADIENE-BASED POLYMER AND MODIFIER USEFUL FOR PREPARING THE SAME |
US15505371 |
2015-11-27 |
US20170275390A1 |
2017-09-28 |
Hyo Jin Bae; Won Hee Kim; Hee Jung Jeon; Seung Ho Choi; Kyoung Hwan Oh; Dong Hui Kim; Hyun Woong Park; Won Mun Choi; Jeong Heon Ahn; Suk Youn Kang |
The present invention provides a modified butadiene-based polymer capable of enhancing dispersability of an inorganic filler when used in a rubber composition, and enhancing viscoelasticity, a tensile property and processibility of the rubber composition in a balanced way from an interaction with the inorganic filler, and a modifier useful for preparing the same. |
169 |
CONJUGATED DIENE POLYMER AND CONJUGATED DIENE POLYMER COMPOSITION |
US15509731 |
2015-09-09 |
US20170267800A1 |
2017-09-21 |
Koichiro TAJIMA |
Disclosed is a conjugated diene polymer comprising a conjugated diene as a monomeric unit. The conjugated diene polymer is obtained by a polymerization reaction in a reaction solution comprising a conjugated diene, at least one compound selected from the group consisting of limonene, terpinene, and terpinolene, and an organoalkali metal compound as a polymerization initiator. Mz/Mn is 1.7 or more and 4.0 or less, when Mz is a Z-average molecular weight of the conjugated diene polymer, Mn is a number average molecular weight of the conjugated diene polymer, and the Z-average molecular weight and the number average molecular weight are values in terms of polystyrene by gel permeation chromatography. |
170 |
Tire |
US14837588 |
2015-08-27 |
US09745454B2 |
2017-08-29 |
Masako Nakatani |
Tire having improved wet grip performance and improved resistance to breaking or chipping along with good fuel economy. The tire includes a tire component (preferably, a tire tread) formed of a vulcanized rubber composition. The vulcanized rubber composition is obtained by vulcanizing a specific unvulcanized rubber composition. The unvulcanized rubber composition comprises (a) a rubber component composed of natural rubber, polybutadiene rubber, and two different types of styrene-butadiene rubber, (b) a filler that includes silica, and (c) a silane coupling agent that incorporates a —C(═O)—S— moiety. |
171 |
Butyl rubber with increased impermeability |
US14651478 |
2013-12-16 |
US09745388B2 |
2017-08-29 |
Tricia Breen Carmichael; Akhil Vohra; Lorenzo Ferrari; Natalie Suhan |
Surface modification methods based on a combination of plasma and chemical treatments render an unfilled butyl rubber surface highly reactive toward organosilanes, allowing formation of an organosilane self-assembled monolayer (SAM). Plasma oxidation of the butyl rubber surface followed by vapor deposition of SiCl4 produces a hydrophilic surface suitable for anchoring organosilanes. Fabrication of SAMs on this hydrophilic butyl rubber surface with n-octadecyltrichlorosilane (OTS) and trichloro(1H,1H,2H,2H-perfluorooctyl)silane (FOTS) via vapor deposition resulted in a 15% and 25% decrease in gas permeability, respectively, with no change in optical transparency of the butyl rubber. |
172 |
Method of making base stabilized polymers, polymer compositions and articles containing such polymers |
US14405501 |
2013-06-05 |
US09718931B2 |
2017-08-01 |
Kenji Nakatani; Mark N. DeDecker; Joseph P. Padolewski; James H. Pawlow |
A method of making a polymer with stable Mooney viscosity and molecular weight is described. A conjugated diolefin is reacted in a hydrocarbon solvent in the presence of an initiator to form a polymer. After forming the polymer, alkoxy silane terminal functionalizing groups are bonded to the polymer. A dialkoxysilane stabilizing agent is then added to the polymer in combination with a base material. The polymer is then desolvatizing, resulting in a polymer with stable Mooney viscosity and molecular weight, even over prolonged periods of time. Compositions and articles containing the polymer are also described. |
173 |
Carbinol-terminated polymers containing allylamine |
US14399101 |
2013-04-29 |
US09718912B2 |
2017-08-01 |
Norbert Steinhauser; Thomas Gross; Fernanda Albino |
The present invention relates to diene polymers or diene copolymers, wherein the diene polymers or diene copolymers have, at the start of the polymer chains, tertiary amino groups of the formula (Ia), (Ib), (IIa) or (IIb) where R1, R2 are the same or different and are each alkyl, cycloalkyl, aryl, alkaryl and aralkyl radicals which may contain heteroatoms such as O, N, S and/or Si, Z is a divalent organic radical which, as well as C and H, may contain heteroatoms such as O, N, S and/or Si, and, at the end of the polymer chains, silane-containing carbinol groups of the formula (III) or metal salts thereof or semimetal salts thereof, where R3, R4, R5, R6 are the same or different and are each an H or alkyl, cycloalkyl, aryl, alkaryl and aralkyl radicals which may contain heteroatoms such as O, N, S and/or Si, A is a divalent organic radical which, as well as C and H, may contain heteroatoms such as O, N, S and/or Si. |
174 |
TIRE WITH LOW ROLLING RESISTANCE |
US15315601 |
2015-05-27 |
US20170204256A1 |
2017-07-20 |
PHILIPPE LABRUNIE; BENOIT DE GAUDEMARIS |
A tire tread comprises a rubber composition based on at least: an elastomer matrix comprising more than 50% by weight of a solution SBR bearing a silanol function and an amine function, a reinforcing filler present at a content of between 40 and 80 phr, which reinforcing filler comprises between 40 and 80 phr of a silica, a coupling agent for coupling the silica to the solution SBR, 10 to 50 phr of a hydrocarbon-based resin having a Tg of greater than 20° C., and 0 to less than 5 phr of a liquid plasticizer. Such a tire has a good performance compromise between rolling resistance and wet grip. |
175 |
Rubber composition having a crosslink distribution, its preparation and article with component |
US14739391 |
2015-06-15 |
US09701821B2 |
2017-07-11 |
George Jim Papakonstantopoulos; Frank James Feher; Christin Louise Alwardt; Byoung Jo Lee |
The invention relates to a rubber composition and its preparation having a crosslink distribution, particularly at least two types of crosslinks, its preparation, and an article of manufacture, including a tire, having a component of such rubber composition. In one embodiment the crosslink distribution can be a controlled crosslink distribution of at least two types of crosslinks. In one embodiment, such crosslink distribution relates to an inclusion in the rubber composition of an additive to promote the crosslink distribution where the additive itself has a part of the desired crosslink characteristics. The distributed crosslinks can be of different types including different length, different chemistry, and connecting different points on the crosslinked rubber chains. The distributed crosslinks can be present in different concentrations in the rubber composition. The crosslink distribution can be random or in the nature of a gradient change between domains of different crosslinks. The properties of the rubber composition can be varied by adjustment of such distributed crosslinks to promote various physical properties such as, for example, its viscoelastic properties, tear strength, abrasion resistance and green strength. |
176 |
Crosslinked rubber, member for tires, vibration-proofing member, member for belts, and rubber composition |
US15023529 |
2014-10-29 |
US09683095B2 |
2017-06-20 |
Yukihiro Sawada; Hirofumi Senga; Shigeru Abe |
A cross-linked rubber exhibits high strength and excellent abrasion resistance as compared with a known cross-linked rubber. The cross-linked rubber is obtained by cross-linking a rubber composition that includes a hydrogenated conjugated diene-based polymer, an olefin-based rubber, and a cross-linking agent, the hydrogenated conjugated diene-based polymer being a hydrogenated product of a polymer that includes a structural unit derived from butadiene, and including at least one of an amino group and a hydrocarbyloxysilyl group at one terminal or each terminal. |
177 |
Processes for preparing aminosilane functionalized polymers |
US15014620 |
2016-02-03 |
US09676874B2 |
2017-06-13 |
David F. Lawson; Terrence E. Hogan; Christine Rademacher; David M. Roggeman; Fuminori Ota |
Disclosed herein are metallated aminosilane compounds for use as functional initiators in anionic polymerizations and processes for producing an aminosilane-functionalized polymer using the metallated aminosilane compounds to initiate anionic polymerization of at least one type of anionically polymerizable monomer. Preferred use of the metallated aminosilane compounds results in rubber compositions for use in tires comprising an aminosilane functionalized polymer. A telechelic polymer may result from use of the metallated aminosilane compound and a functional terminator. |
178 |
Functionalized diene elastomer, and rubber composition containing same |
US13500942 |
2010-10-07 |
US09670291B2 |
2017-06-06 |
Jean-Marc Marechal; Stéphanie De Landtsheer; Jean-Michel Favrot |
The present invention relates to a specific functionalized diene elastomer. This functionalized elastomer exhibits a reduced cold flow without, however, damaging the properties of a reinforced rubber composition in which it is present, in particular the processing properties and the hysteresis properties. This functionalized diene elastomer carries, at the chain end, a silanol functional group or a polysiloxane block having a silanol end and is partially coupled by or star-branched by tin. |
179 |
TIRE |
US15292374 |
2016-10-13 |
US20170137598A1 |
2017-05-18 |
Mikako TAKENAKA; Ryoji KOJIMA |
A purpose of the present invention is to provide a tire assuring that clogging of snow and sticking of snow are inhibited, particularly a tire assuring that clogging of snow and sticking of snow can be inhibited and having good performance on ice and snow and abrasion resistance without depending on the tread pattern form while maintaining wet grip performance and abrasion resistance. The tire is composed of a rubber composition which comprises a rubber component comprising a modified butadiene rubber and silica and has a pure water contact angle of from 125° to 140°. |
180 |
METHOD OF PRODUCTION OF CONJUGATED DIENE RUBBER |
US15322285 |
2015-06-26 |
US20170137555A1 |
2017-05-18 |
Takuro SAKURAI; Takashi IIZUKA |
Production of a conjugated diene rubber includes polymerizing isoprene or a monomer mixture containing isoprene and an aromatic vinyl monomer in an inert solvent by using a polymerization initiator so as to form a polymer block (A) having an active end, mixing the polymer block (A) having an active end and 1,3-butadiene or a monomer mixture containing 1,3-butadiene and an aromatic vinyl monomer to continue a polymerization reaction so as to obtain a conjugated diene polymer chain having an active end and containing a polymer block (A) and a polymer block (B), and reacting a compound represented by the following general formula (1) with the active end of the conjugated diene polymer chain having an active end: |