Abstract:
This invention relates to a conjugated diene-based rubber composition reinforced with silica-based reinforcement together with a non-silane coupling agent as N-3-(1,2-dihydroxypropyl)-N-oleylammonium bromide and/or N-3-(1,2-dihydroxypropyl)-N-methyl-2-mercaptoimidazolium bromide for endeavoring to both couple synthetic aggregates of precipitated silica to elastomers and enhancing electrical conductivity of such rubber compositions which contain less than 25 parts by weight carbon black per 100 parts by weight elastomer. Said coupling agent materials may be provided for mixing with said diene-based rubber(s), for example, as individual materials, as at least one of said materials being supported on a carbon black carrier or as being pre-reacted, or otherwise pre-treated, with synthetic silica aggregates. The invention includes an article of manufacture, including a tire, having at least one component comprised of such rubber composition.
Abstract:
The present invention relates to unsaturated amine-functional silane compounds of the formula: ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 are independently selected from the group consisting of alkoxy radicals having from 1 to 8 carbon atoms, alkyl radicals having 1 to 8 carbon atoms and aryl radicals having 6 carbon atoms, with the proviso that at least one of R.sup.1, R.sup.2 and R.sup.3 is an alkoxy radical; R.sup.4 is selected from the group consisting of alkylene groups having from 1 to 18 carbon atoms and arylene and alkyl substituted arylene groups having from 6 to 10 carbon atoms; R.sup.5 is selected from the group consisting of hydrogen and an alkyl group having 1 carbon atom and X is a halogen atom selected from the group consisting of Cl, Br and I.
Abstract:
This invention discloses a process for manufacturing an elastomeric article by liquid injection molding, said process comprising the steps of: (I) heating a curable composition comprised of (1) a liquid polymer comprised of repeat units that are derived from a conjugated diolefin monomer, wherein said liquid polymer has a weight average molecular weight which is within the range of 5,000 to 100,000, and wherein the liquid polymer is functionalized with an amine moiety, (2) a carbonyl inhibited platinum catalyst, and (3) a tetrakis(dialkyl siloxy) silane crosslinking agent, to a temperature which is within the range of 30° C. to 100° C.; (II) injecting the heated curable composition into a mold at a temperature which is within the range of 100° C. to 210° C. to produce the elastomeric article; and (III) removing the elastomeric article from the mold.
Abstract:
This invention discloses a process for manufacturing an elastomeric article by liquid injection molding, wherein the article has improved tensile strength and improved tear strength, said process comprising the steps of: (I) heating a curable composition comprised of (1) a liquid polymer comprised of repeat units that are derived from a conjugated diolefin monomer, wherein said liquid polymer has a weight average molecular weight which is within the range of 5,000 to 100,000, and wherein the liquid polymer is functionalized with an ether moiety, (2) a carbonyl inhibited platinum catalyst, and (3) a tetrakis(dialkyl siloxy) silane crosslinking agent, to a temperature which is within the range of 30° C. to 100° C.; (II) injecting the heated curable composition into a mold at a temperature which is within the range of 100° C. to 210° C. to produce the elastomeric article; and (III) removing the elastomeric article from the mold. This invention also discloses that the elasticity of such cured elastomeric articles can be increased without reducing cure levels by incorporating a liquid C5 tackifier resin into the liquid polymer.
Abstract:
This invention discloses a process for manufacturing an elastomeric article by liquid injection molding, wherein the article has improved tensile strength and improved tear strength, said process comprising the steps of: (I) heating a curable composition comprised of (1) a liquid polymer comprised of repeat units that are derived from a conjugated diolefin monomer, wherein said liquid polymer has a weight average molecular weight which is within the range of 5,000 to 100,000, and wherein the liquid polymer is functionalized with an ether moiety, (2) a carbonyl inhibited platinum catalyst, and (3) a tetrakis(dialkyl siloxy) silane crosslinking agent, to a temperature which is within the range of 30° C. to 100° C.; (II) injecting the heated curable composition into a mold at a temperature which is within the range of 100° C. to 210° C. to produce the elastomeric article; and (III) removing the elastomeric article from the mold. This invention also discloses that the elasticity of such cured elastomeric articles can be increased without reducing cure levels by incorporating a liquid C5 tackifier resin into the liquid polymer.
Abstract:
This invention discloses a process for manufacturing an elastomeric article by liquid injection molding, wherein the article has improved tensile strength and improved tear strength, said process comprising the steps of: (I) heating a curable composition comprised of (1) a liquid polymer comprised of repeat units that are derived from a conjugated diolefin monomer, wherein said liquid polymer has a weight average molecular weight which is within the range of 5,000 to 100,000, and wherein the liquid polymer is functionalized with an ether moiety, (2) a carbonyl inhibited platinum catalyst, and (3) a tetrakis(dialkyl siloxy)silane crosslinking agent, to a temperature which is within the range of 30° C. to 100° C.; (II) injecting the heated curable composition into a mold at a temperature which is within the range of 100° C. to 210° C. to produce the elastomeric article; and (III) removing the elastomeric article from the mold. This invention also discloses that the elasticity of such cured elastomeric articles can be increased without reducing cure levels by incorporating a liquid C5 tackifier resin into the liquid polymer.
Abstract:
This invention relates to a conjugated diene-based rubber composition reinforced with silica-based reinforcement together with a non-silane coupling agent as a combination of 1-thioglycerol(3-mercapto-1,2-propanediol) and 2,2′-benzothiazyl disulfide. Said coupling agent materials may be provided for mixing with said diene-based rubber(s), for example, as individual materials, as at least one of said materials being supported on a carbon black carrier or as being pre-reacted, or otherwise pre-treated, with synthetic silica aggregates. The invention includes an article of manufacture, including a tire, having at least one component comprised of such rubber composition.
Abstract:
The invention relates to a sulfur curable (and cured) rubber composition which contains one or more pentaerythritol derivatives as pentaerythritol tetrabenzoate (PTB) and/or pentaerythritol tetrakis (3,5-di-tert-butyl-4-hydroxyhydrocinnamate) (PTHC) together with a low molecular weight polyester sebacate. Such combination of materials has been observed to increase resistance to tear for a rubber composition. The invention particularly relates to a tire having a component comprised of such rubber composition.
Abstract:
This invention relates to rubber compositions comprised of cis-1,4-polyisoprene and a 4,4′-(para or meta-phenylenediisopropylidine) dianiline and to articles of manufacture having at least one component comprised thereof, including tires. The 4,4′-(phenylenediisopropylidine) dianiline acid has been observed to enhance green strength of such rubber composition.
Abstract:
This invention relates to a conjugated diene-based rubber composition reinforced with particulate silica-based reinforcement together with tetrathiodipropionic acid as a non-silane containing coupling agent to aid in the reinforcement of the rubber composition with a particulate silica-based material and an article of manufacture, including a tire, having at least one component comprised of such rubber composition.