Abstract: A laminar “precured” or “replacement” tread for wheeled vehicles operating at night on retreaded tires is made more readily visible when grooves in the tires are provided with elastomeric strips or bands in which are embedded retroreflective elements such as transparent glass or synthetic resinous microspheres (referred to herein as “beads”). Upper surfaces of longitudinal ridges in a flat curing mold lend themselves to supporting the strips which are then precisely positioned in grooves defined by the ridges, when the flat tread is cured.

Abstract: Poly(p-phenylene-2,6-benzobisoxazole) (“PBO”) yarn or cord is first coated with a subcoat of a mixture of (a) an aliphatic polyglycidyl ether having a flash point greater than 150° C. with enough OH-groups to be substantially water-soluble and (b) a vinyl pyridine-styrene-butadiene rubber latex (VPSBRL), then coated in a conventional RFL dip, yields a twice-coated PBO yarn; this yarn provides adhesive strength in sulfur-vulcanizable rubber which is substantially the same as, or better than, that provided by aramid yarn having the same physical dimensions and construction, and coated with an aromatic polyglycidyl ether.

Abstract: A radial tire having the apex area around the steel reinforced carcass ply turn-up comprised of at least one selected diene rubber and a trans 1,4-polybutadiene rubber.

Abstract: A black rubber sidewall compound essentially free of a silanated rubber which includes a combination of less than 10 phr of a rosin acid type “tackifier” and less than 1 phr of a t-alkanolamine generates, upon curing against a metal mold surface having a finish in the range from about 8 RA to 32 RA, a reaction product which, at the surface of the sidewall, has a gloss in the range from about 10 to 40 lasting at least one month. A secondary advantage is that the surface of the mold remains clean enough not to require refurbishing through at least 20% more curing cycles than is possible with a sidewall conventional sidewall compound without the specified tackifier and t-alkanolamine. Multiple washing of the sidewalls during a month of using the tire, fails to diminish the gloss substantially.

Abstract: The present invention relates to asymmetrical siloxy compounds of the formula wherein R1, R2 and R3 are independently selected from the group consisting of alkoxy radicals having from 1 to 8 carbon atoms; and R4 is selected from the group consisting of substituted or unsubstituted alkylene groups having from 1 to 18 carbon atoms and arylene and alkyl substituted arylene groups having from 6 to 12 carbon atoms. The asymmetrical siloxy disulfide compounds are prepared from N-cyclohexylthiophthalimide and a mercaptoalkoxysilane.

Abstract: The pneumatic tire has a single carcass ply reinforced with parallel metallic cords, each cord composed of at least one filament having a tensile strength of at least (−2000×D+4400 MPa) ×95%, where D is the filament diameter in millimeters. The turnup portion of the single carcass ply 12 in the bead portion of a pneumatic tire is interposed between the bead core 11 and a toe guard 18, and the radially outer edge of each turnup portion being in contact with the main portion of the carcass ply and extending to an end point 0.5 to 4.0 inches (12.7 to 101.6 mm) radially outward of the bead core. The toe guard 18 has a first and second end and each end is disposed directly adjacent to the carcass ply. The first end 18a of the toe guard is located on the axially inner side of the main portion of the carcass ply at a location about 0.4 to 3.

Abstract: A tire with a rubber containing component compound of, based on 100 parts by weight (phr) of rubber, (A) from 10 to 90 phr of a terpolymer rubber having pendant hydroxyl groups; and (B) from 10 to 90 phr of a rubber containing a nitrile moiety.

Abstract: An endless single V-grooved power transmission belt having a tension section; a cushion section; and a load-carrying section disposed between the tension section and cushion section; and the belt containing a sulfur-cured elastomeric composition comprising 100 parts of a rubber derived from 25 to 100 parts by weight of natural rubber; 0 to 75 parts by weight of a second rubber selected from the group consisting of polychloroprene, synthetic polyisoprene, epichlorohydrin, acrylonitrile rubber, hydrogenated acrylonitrile rubber, styrene-butadiene rubber, styrene-isoprene rubber, isoprene-butadiene rubber, styrene-isoprene-butadiene rubber, 1,4-trans-polybutadiene, chlorosulfonated polyethylene, alkylated chlorosulfonated polyethylene, trans-polyoctenamer and mixtures thereof from 1 to 30 parts by weight per 100 parts by weight of total rubber (phr) of a polybutadiene adduct of maleic acid anhydride; and from 5 to 50 phr of fibers distributed throughout the elastomer composition.

Abstract: A strip of tire ply stock is reinforced with steel cords wherein the steel cords are constructed of high strength wire filament having at least a tensile strength of −2000×D+4400 MPa where D is the filament diameter in mm. Tires are constructed with the ply stock in the belt and/or carcass.

Abstract: This invention relates to power transmission belts and to a rubber composition for use therein. The composition contains from 90 to 10 phr alkylated chlorosulfonated polyethylene and 10 to 90 phr ethylene vinyl acetate.

Abstract: The present invention relates to mixed diaryl-p-phenylenediamine disulfides and its use in compounds. The mixed diaryl-p-phenylenediamine are of the formula and mixtures thereof wherein R1 and R2 are each independently selected from the group consisting of hydrogen and alkyls having from 1 to 8 carbon atoms.

Abstract: There is disclosed a rubber composition comprising: (a) 100 parts by weight of at least one rubber containing olefinic unsaturation; and (b) 1 to 150 phr of a precipitated organosilicon particles having a core and a shell, wherein the core is obtained by the condensation of at least one monomer of the formula: R1—Si(OR2)3  I  where R1 is selected from the group consisting of hydrogen, methyl, ethyl, vinyl, alkoxy having from 1 to 4 carbon atoms, and phenyl; R2 is selected from the group consisting of alkyls having from 1 to 4 carbon atoms and phenyl; and wherein said condensation of said monomer is in the presence of a surfactant; and wherein the shell is obtained by the subsequent addition to the core of a monomer of the formula: R3—Si(OR2)3  II  where R3 is selected from the group consisting of —CH═CH2, —CH2—CH═CH2, &Parenopenst;CH2&Parenclosest;nSH and mixtures thereof; and n is an integer of from 2 to 8.

Abstract: There is disclosed a pneumatic tire having a rubber component comprising a sulfur cured rubber composition composed of, based on 100 parts by weight of rubber (phr): (a) 99 to 50 parts by weight of a first rubber containing olefinic unsaturation; and (b) 1 to 50 parts by weight of a second rubber which is different from said first rubber and which is an elastomeric block copolymer of (1) from 15 to 65 percent by weight, based on the total block copolymer, of butadiene, and (2) from 35 to 85 percent by weight, based on the total block copolymer, of styrene, which block copolymer has: (a) at least two blocks A which have polymerized units of styrene, a glass transition temperature Tg above 25° C.

Abstract: The present invention relates to siloxy containing salts of the formula: wherein each R1 and R2 are independently selected from the group consisting of alkoxy radicals having from 1 to 8 carbon atoms and alkyls having from 1 to 8 carbon atoms; R3 is selected from the group consisting of alkoxy radicals having from 1 to 8 carbon atoms; each R4 is independently selected from the group consisting of alkylenes and having from 1 to 15 carbon atoms, arylenes alkyl substituted arylenes having from 6 to 10 carbon atoms, —R5—O—R6— and —R5—NH—R7—; R5 and R7 are independently selected from the group consisting of alkylenes having from 1 to 15 carbon atoms, arylenes and alkyl substituted arylenes having from 6 to 10 carbon atoms; R6 is selected from the group consisting of alkylenes having from 1 to 15 carbon atoms, arylenes and alkyl substituted arylenes having from 6 to 10 carbon atoms and alkenylenes having from 2 to 15 carbon atoms; and x is an integer

Abstract: An endless power transmission belt comprising (a) a tension section; (b) a compression section; (c) a load-carrying section disposed between the tension section and cushion section; and (d) at least one drive surface having a flocked fabric facing layer bonded to an outer surface of the belt.

Abstract: There is disclosed a rubber composition comprising: (A) 100 parts by weight of at least one rubber containing olefinic unsaturation; and (B) 1.

Abstract: A strip of sheet material is wound on a spool by a driving belt wrapped around spaced rollers of a surface winder which urge the sheet material into contact with the spool, rotating the spool, and at the same time, applying the sheet material to the spool, with layers of the material being separated by a liner wrapped around the spool as the sheet material is being applied.

Abstract: A pneumatic tire having a tread comprised of (a) a diene-based elastomer containing olefinic unsaturation and (b) from 1 to 150 phr of a metal oxide aerogel.

Abstract: There is disclosed a method for the preparation of a diene polymer interpenetrated with a polysiloxane comprising the polymerization of (A) at least one silane monomer of the formula: (B) at least one silane monomer of the formula: (C) at least one diene monomer, said polymerization being conducted in the presence of an anionic base, an inert solvent and a polymerization initiator, wherein each R1 is independently selected from the group consisting of alkyl radicals having from 1 to 4 carbon atoms and aryl radicals having 6 carbon atoms and R2 is selected from the group consisting of where x is an integer of from 1 to 8.

Abstract: The present invention relates to a process for improving the cured adhesion of at least two rubber components which contact each other in a pneumatic tire. The process involves the steps of assembling and vulcanizing a pneumatic tire wherein prior to vulcanization of the pneumatic tire, one of the components is a precured rubber compound and the other is an uncured rubber compound. The process involves using a precured rubber compound comprising from 40 to 100 parts by weight of natural rubber or emulsion-polymerized styrene-butadiene copolymer rubber containing 0.5 to 3 phr of a fatty acid, precipitated silica and no fatty acid other than contained in the natural rubber or emulsion-polymerized styrene-butadiene rubber.