The Goodyear & Tire Rubber Company

Danisco US Inc.

Frank James Feher

Joseph Charles McAuliffe

Aaron Scott Puhala

Dane Kenton Parker

Fernando Valle

Gregory Marshall Whited

Marguerite A Cervin

Gopal K Chotani

Karl John Sanford

Andrei Miasnikov

Viswanath Mahadevan

Caroline M Peres

George Jim Papakonstantopoulos

Richard La Duca

Thomas Franklin Spilker

Bruce Raymond Hahn

Arindam Mazumdar

Stephan Rodewald

Carol Marie Fioresi

Ilana S Aldor

Ralf Mruk

Robert Fokko Roskamp

Tang Hong Wong

Kelsey Elizabeth Cantwell

Byoung Jo Lee

Thierry Florent Edme Materne

Junling Zhao

Joseph John Kulig

Liqing Ma

Timothy A Sabo

Ji Yang Jin

Christin Louise Alwardt

John Kaluen Kan

Thomas F McCall

Lawrence J Pickert

Christopher D Ploetz

Eric Sean Castner

Lei Zheng

Rudolf Wilhelm Zentel

Michael Lawrence Gersman

Alexandra Hermann

Aruna Mani Velamakanni

John Thomas Lean

Anthony Ryan Lame

Joseph C Mcauliffe

Rober Neil Beers

This invention reveals a method of manufacturing a puncture sealing pneumatic rubber tire which comprises: (1) building an unvulcanized tire including a circumferential rubber tread, a supporting carcass therefor, two spaced beads, two rubber sidewalls connecting said beads, an inner liner and a solid sealant formulation layer disposed inwardly from said supporting carcass and outwardly from said inner liner, wherein said solid sealant formulation layer is comprised of (a) polyisobutylene, (b) a peroxide, and (c) a reinforcing filler, wherein the polyisobutylene is present in the sealant layer at a level of at least 50 weight percent; and (2) shaping and vulcanizing said tire in a tire mold under conditions of heat and pressure and simultaneously forming in situ a puncture sealant layer in said tire by both crosslinking and partially depolymerizing said polyisobutylene rubber in said sealant layer formulation.

Self sealing tire

It has been discovered that certain monofunctional thiuram compounds can be synthesized at low cost and utilized as vulcanization accelerators which provide excellent cure rates without causing a high level of scorch. The use of these monofunctional thiuram compounds as vulcanization accelerators also result in cured rubber compositions that exhibit reduced compression set, improved age hardening characteristics, and degradation resistant crosslinks. These monofunctional thiuram compounds are of the structural formula: wherein Rand Rcan be the same or different and represent organyl radicals, wherein Rand Rcontain a total of at least 8 carbon atoms, and wherein Rand Rcan join together to form a cyclic structure, and wherein Rrepresents an organyl radical containing at least 6 carbon atoms.

Accelerator for the vulcanization of rubbery polymers

The present invention provides a route for synthesizing monofunctional thiuram compounds that is safe, environmentally friendly, and cost effective. This method specifically involves synthesizing a monofunctional thiuram by (1) reacting a tetraorganylthiuram disulfide with an organyl mercaptan to produce the monofunctional thiuram and a dithiocarbamate metal salt or a dithiocarbamate metalloid salt under basic conditions, (2) separating the monofunctional thiuram in an organic phase from the dithiocarbamate metal salt or the dithiocarbamate metalloid salt in an aqueous phase, and (3) recovering the monofunctional thiuram from the aqueous phase. The monofunctional thiuram compounds made in accordance with this invention are of particular value as accelerators for use in the vulcanization of rubber. The use of these monofunctional thiuram compounds as accelerators provides good cure rates and as well as good scorch safety.

Synthesis of monofunctional thiuram accelerator

The present invention is directed to novel functionalized vegetable oils, a method of making the oils, their use in rubber compositions, and their use in tires.

Functional disulfide vegetable oils, method of making and use in rubber compositions and tires

The present invention is directed to novel silane disulfide vegetable oils, a method of making the oils, their use in rubber compositions, and their use in tires.

Silane disulfide vegetable oils, method of making and use in rubber compositions and tires

The invention features methods for producing isoprene from cultured cells. The invention also provides compositions that include these cultured cells.

Compositions and methods for producing isoprene

This invention relates to a vehicular tire containing at least one carbon black reinforced polyurethane component.

Tire with carbon black reinforced polyurethane

Methods and apparatus for the purification of isoprene, such as the purification of a bioisoprene composition from fermentor off-gas. The apparatus includes two columns that process the fermentor off-gas, which includes isoprene and various impurities. A solvent is added to the off-gas in the first column, and the isoprene is stripped from the solvent in the second column. Also provided is a downstream further purification process. Also provided are the resulting purified isoprene compositions.

Purification of isoprene from renewable resources

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.

Rubber composition having a crosslink distribution, its preparation and article with component

It has been found that certain cells in culture can convert more than about 0.002 percent of the carbon available in the cell culture medium into isoprene. These cells have a heterologous nucleic acid that (i) encodes an isoprene synthase polypeptide and (ii) is operably linked to a promoter. The isoprene produced in such a cultured medium can then be recovered and polymerized into synthetic rubbers and other useful polymeric materials. The synthetic isoprene containing polymers of this invention offer the benefit of being verifiable as to being derived from non-petrochemical based resources. They can also be analytically distinguished from rubbers that come from natural sources. The present invention more specifically discloses a polyisoprene polymer which is comprised of repeat units that are derived from isoprene monomer, wherein the polyisoprene polymer has &#x3b4;C value of greater than &#x2212;22%.

Polymers of isoprene from renewable resources

The present invention is directed to a method of making a copolymer, comprising the steps of at least partially epoxidizing a polyisoprene to produce an epoxidized polyisoprene; reacting the epoxidized polyisoprene with a dithiol to produce a thiol functionalized polyisoprene; and reacting the thiol functionalized polyisoprene with a thiolophile-functionalized polymer derived from a monomer having a hydrogen bond donor site and hydrogen bond acceptor site to form the copolymer.

Method of making functionalized elastomer

The present invention is directed to a polymer blend, the blend including a diene-based elastomer grafted with a substituted acrylamide polymer through a sulfur atom, and from 1 to 20 percent by weight of an additional polymer miscible with the substituted acrylamide polymer.

Blend of a graft copolymer and a second polymer miscible with sidechains of the graft copolymer

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Copley, OH, United States of America

Frank James Feher