Patent application number | Description | Published |
20090197995 | Tire Innerliners Having Improved Cold Temperature Properties - Provided are elastomeric compositions, such as a tire innerliner, comprising at least one isobutylene based elastomer and at least one hydrocarbon fluid additive (“HFA”). The compositions have improved cold temperature properties and are particularly useful as tire innerliners for an aircraft tire. The use of a HFA in the elastomeric composition may allow for the use of reduced amounts of secondary elastomers, such as natural rubber, while allowing for an improved balance in the composition's brittleness and permeability properties. Examples of useful HFAs include polyalphaolefins, high purity hydrocarbon fluids, and water white group III mineral oils. | 08-06-2009 |
20100076121 | TIRE INNERLINERS HAVING IMPROVED COLD TEMPERATURE PROPERTIES - Provided are elastomeric compositions, such as a tire innerliner, comprising at least one isobutylene based elastomer and at least one hydrocarbon fluid additive (“HFA”). The compositions have improved cold temperature properties and are particularly useful as tire innerliners for an aircraft tire. The use of a HFA in the elastomeric composition may allow for the use of reduced amounts of secondary elastomers, such as natural rubber, while allowing for an improved balance in the composition's brittleness and permeability properties. Examples of useful HFAs include polyalphaolefins, high purity hydrocarbon fluids, and water white group III mineral oils. | 03-25-2010 |
20120157631 | Fiber-Reinforced Polypropylene/Elastomer Composite - Provided is a fiber-reinforced composite. The composite has a propylene polymer including 90 wt % or more of propylene monomeric units based on the weight of the propylene polymer; a plurality of fibers of a solid, flexible material grafted to the propylene polymer; and an elastomer. The fibers are present in the composite at 10 wt % to 80 wt % based on the total weight of the composite. The propylene polymer is present in the composite at from 30 wt % to 95 wt % based on the total weight of the composite. The elastomer is present in the composite at from 5 wt % to 50 wt % based on the total weight of the composite. Greater than 50 wt % of the fibers are dispersed within the propylene polymer based on the total weight of the fibers in the composite. There is also provided a process for making a fiber-reinforced composite. | 06-21-2012 |
20120296046 | STAR HYDROCARBON POLYMER, PROCESS FOR MAKING, AND A POLYMER BLEND COMPOSITION HAVING SAME - Provided is a process for making a saturated star hydrocarbon polymer. The process has the following steps: (A) hydrosilylating tetraethylene silicon with methyldichlorosilane in the presence of a hydrosilylating catalyst to form a chlorosilane dendrimer; (B) reacting the chlorosilane dendrimer with vinylmagnesium bromide in the presence of a lithium and/or organolithium initiator stepwise to build a higher generation chlorosilane dendrimer; (C) anionically polymerizing polybutadiene in the presence of a lithium and/or organolithium initiator to form living poly(butadienyl)lithium; (D) attaching the living poly(butadienyl)lithium to the higher generation dendrimer to form a star polybutadiene; and (E) hydrogenating the star polybutadiene to form the saturated star hydrocarbon polymer. There is also provided a saturated star hydrocarbon polymer made according to the above process and a polymer composition of a matrix ethylene polymer and the saturated star hydrocarbon polymer. | 11-22-2012 |
20130018120 | DENDRITIC ETHYLENE POLYMERS AND PROCESSES FOR MAKINGAANM Tsou; Andy H.AACI AllentownAAST PAAACO USAAGP Tsou; Andy H. Allentown PA USAANM Luo; ShujiAACI BridgewaterAAST NJAACO USAAGP Luo; Shuji Bridgewater NJ USAANM Crowther; Donna J.AACI SeabrookAAST TXAACO USAAGP Crowther; Donna J. Seabrook TX USAANM Kiss; GaborAACI HamptonAAST NJAACO USAAGP Kiss; Gabor Hampton NJ USAANM Soulages; Johannes M.AACI MorristownAAST NJAACO USAAGP Soulages; Johannes M. Morristown NJ USAANM Shirodkar; Pradeep P.AACI HoustonAAST TXAACO USAAGP Shirodkar; Pradeep P. Houston TX US - Provided is a dendritic ethylene polymer. The polymer is a dendritic polymer of an ethylene/alpha-olefin-diene copolymer and a vinyl-terminated polyethylene. There is also provided a process for making a dendritic ethylene polymer. The process includes the steps of preparing a dendritic ethylene polymer by reacting ethylene/alpha-olefin-diene copolymer with vinyl-terminated polyethylene in the presence of a radical source. There is also provided a blend and a blown film that include the dendritic ethylene polymer. | 01-17-2013 |
20130018149 | MULTI-ARM STAR ETHYLENE POLYMERS AND PROCESS FOR MAKINGAANM Tsou; Andy H.AACI AllentownAAST PAAACO USAAGP Tsou; Andy H. Allentown PA USAANM Luo; ShujiAACI BridgewaterAAST NJAACO USAAGP Luo; Shuji Bridgewater NJ USAANM Soulages; Johannes M.AACI MorristownAAST NJAACO USAAGP Soulages; Johannes M. Morristown NJ US - Provided is a multi-arm (greater than 3 arms) star ethylene polymer (sEP). The multi-arm star ethylene polymer is a polymer of an ethylene/maleic anhydride copolymer (EMAC) grafted with vinyl-terminated polyethylene. There are also provided a process for making the sEP and blend of a matrix ethylene polymer and the sEP. | 01-17-2013 |
20130087263 | CONSTRUCTION COMPRISING TIE LAYER - A layered structure suitable for use in a pneumatic tire as an innerliner is prepared by directly bonding a fluid permeation prevention film and an adhesive tie layer. Prior to the bonding, the fluid permeation prevention layer is treated to remove any residual plasticizers or oils on the surface of the film. The tie layer comprises 100 weight % of at least one halogenated isobutylene containing elastomer and about 1 to about 20 parts per hundred (phr) of at least one tackifier. The fluid permeation prevention film comprises an elastomeric component dispersed in a vulcanized or partially vulcanized state, as a discontinuous phase, in a matrix of the thermoplastic resin component. The two layers of the layered structure may be separately extruded and then adhered to each other or adhered to each other during a calendaring operation wherein the adhesive tie layer composition is coated onto the treated film. | 04-11-2013 |
20130211008 | Modified Polyethylene Film Compositions - The present invention relates to polyethylene compositions comprising one or more ethylene polymers and one or more dendritic hydrocarbon polymer modifiers, in particular, this invention further relates to polyethylene blends comprising one or more ethylene polymers and one or more dendritic hydrocarbon polymer modifiers, wherein the modifier has: 1) a g′ value less than 0.75; 2) a Cayley tree topology with a layer number of 2 or more more; and 3) a average Mw between the branch points of 1,500 g/mol or more. | 08-15-2013 |
20130211009 | Modified Polyethylene Blown Film Compositions Having Excellent Bubble Stability - The present invention relates to polyethylene compositions comprising one or more ethylene polymers and one or more dendritic hydrocarbon polymer modifiers, in particular, this invention further relates to polyethylene blends comprising one or more ethylene polymers and one or more dendritic hydrocarbon polymer modifiers, wherein the modifier has: 1) a g′ | 08-15-2013 |