Abstract: A method of making a vacuum blanket for vacuum curing elastomeric and plastic materials and more specifically, it relates to making a vacuum blanket by spray coating a polyurethane liquid reaction mixture.

Abstract: A building form and method of preparing molded articles thereon which comprises molding an article on the casting surface of a building form comprising a casting surface adhered to a water destructible support layer, the said casting surface comprising a water permeable polymeric film, water destructing the said support layer, water penetrating the said casting surface, and removing the molded article.

Abstract: N-sulfonyl-sulfilimine compounds such as S,S-di(isopropyl)-N-(p-toluenesulfonyl) sulfilimine are used as premature vulcanization inhibitors in polymers compounded for sulfur vulcanization.

Abstract: A seal between the surface of a traction shoe and the belt of a removable track for a tire in which the belt-engaging surface of the shoe has a groove extending axially of the track. An elongated sealing member is located in the groove and has a thickness greater than the depth of the groove for sealing engagement with the shoe-engaging surface of the belt. The groove may extend along the side and end edges of the shoe and the sealing member may be an endless strip of material providing a seal completely around the belt-engaging surface of the traction shoe.

Abstract: A machine used in the renewal of large earthmover type tires, wherein the worn lugs are completely removed from the tire casing and replaced with convolutions of unvulcanized rubber material. The machine is provided with a heated knife blade which is utilized to cut a series of grooves in the unvulcanized rubber material of the tread in accordance with a pattern mounted on the machine. The pattern consists of a cam with a curved outer periphery which is monitored as the cam rotates on the machine. The depth to which the knife cuts into the unvulcanized rubber material as it moves transversely across the tread, is varied in accordance with the periphery of the cam being monitored.

Abstract: Compounds such as bis[1-(4-anilinophenoxy)-2-propyl] 4,7-dithiadecanedioate and [3-(4-anilinophenoxy)-2-hydroxypropyl] 4,7-dithiadecanedioate are provided by reactions between 4-anilinophenoxy alcohols and epoxides and a dicarboxylic acid. The bis(4-anilinophenoxy) ester products are useful as antioxidants in polymers.

Abstract: A radial ply tire and rim assembly in which the tire has an aspect ratio of less than 70 percent and a bead spacing of no greater than 65 percent of the maximum axial width of the inflated tire. The rim has a pair of axially extending flanges which engage the lower sidewall of the tire and distort the carcass from its natural equilibrium curvature without causing any reversal of curvature of the carcass.

Abstract: A flexible elastic ring having a generally rectangular cross section with radially inner and outer surfaces. A plurality of rigid members are molded in the ring at circumferentially spaced-apart positions and each of the rigid members extends diagonally from an edge at the radially inner surface to an edge at the radially outer surface of the elastic ring. The ring is mounted in a wheel well of the tire rim with the tire bead overlapping the edge at the radially outer surface to hold down the ring and the ends of the rigid members in that edge. The other ends of the rigid members are located in the edge at the radially inner surface of the ring adjacent a radially extending side surface of the ring for resisting deflection of the side surface which abuts a radially extending surface of the wheel well. The rigid members prevent the ring from rotating out of the wheel well in this manner when the ring is subject to centrifugal force during rotation of the wheel on which the rim is mounted.

Abstract: A foam mattress having a crown area with cored-out areas therein to modify the harshness of feel of said mattress.

Abstract: A foamed article having zones of varying hardness is prepared by moving a shaping means relative to at least two foam pouring means to distribute a foamable mixture over the surface of the shaping means in a fan-shaped pattern in response to the relative motion between the pouring means and the shaper, adjusting the fan-shaped pattern to define zones in the foamed article having the desired physical characteristics.

Abstract: A shock absorbing element, suitable for use in a railroad draft gear, as well as a resilient polyureaurethane composition therefor, said element characterized by a compressive cycling test as well as preferably a cold temperature compression test, where said polyureaurethane is prepared by reacting a complex of 4,4'-methylene dianiline and a salt with the reaction product of selected diisocyanates and manipulatively selected polymeric polyols. An assembly of such shock absorbing elements is also disclosed under compression in a cylinder suitable as a railroad shock absorbing draft gear.

Abstract: There is disclosed an olefin metathesis process which comprises subjecting at least one olefin to a catalyst system consisting of (1) salts of the metals selected from the group of tungsten, molybdenum and chromium, said salts being halides or the reaction products of these metal halides with carboxylic acids, phenols and 1,3-diketones, (2) a material selected from the group represented by the formulae:R.sub.3-n MX.sub.nandR.sub.3 M.sub.2 X.sub.3wherein R is an alkyl radical containing from 1 to 12 carbon atoms, M is selected from the group consisting of aluminum, gallium and indium, X is a halogen from the group of fluorine, chlorine, bromine and iodine, and n equals 0, 1 or 2, and (3) a compound defined by the formula:N R.sub.1 R.sub.2 R.sub.3in which R.sub.1 and R.sub.2 are selected from the group of hydrogen, alkyl, aralkyl, aryl, alkenyl and alkaryl, R.sub.

Abstract: An improved vibration damper for use with oscillating bodies and the method of making said damper. The damper includes an inner core member or hub, an outer inertia mass member or inertia ring surrounding and spaced from the hub, and compressible resilient damping means such as a layer of compressible elastomeric material under a limited compression and a retaining means such as a metallic band disposed between the core member and the inertia member. The damping means is chemically adhered to both the retaining means and the core member or the inertia member and the retaining means is fixed in an interference fit to either the outer peripheral surface of the core member or the inner peripheral surface of the inertia member. The damper is particularly useful for mounting on the end of a crankshaft of an internal combustion engine.

Abstract: This invention relates to a flexible mold and a process of making wherein a composition or laminate is formed to give the mold the desired solvent resistance and yet maintain its flexibility.

Abstract: This invention relates to a method of forming shaped articles utilizing liquid functional group polymers compounded with suitable compounding agents to produce mixtures of extremely viscous nature and moving these viscous mixtures to a shaping device without the entrapment of air.

Abstract: Compounds such as 1-(4-anilinophenoxy)-3-dodecanethio-2-propanol are formed by reaction between an epoxypropoxydiphenylamine and a thiol, an alcohol or an amine. The compounds produced are useful as antioxidants for natural and synthetic elastomers.

Abstract: A method and apparatus for building a closed torus pneumatic tire in which the components of the tire, exclusive of the belt and tread structures, are wrapped about a cylindrical former, inextensible bead rings are positioned about the former in positions spaced axially apart substantially the same as the final desired axial spacing. The former is radially expanded and expands the carcass structure to clampingly engage the bead rings. Each axially outer end portion of the carcass structures is folded over toward the axial centerplane of the drum in a manner in which the carcass is free of internal restraint at the fold. Each axially outer end of the folded over end portion of the carcass structure freely contracts radially into position to be clamped by a pull-over ring and is pulled axially across the former to a predetermined position past the midcircumferential centerplane of the former and released. A sidewall restraint ring moves into position adjacent the fold to prevent roll back of each end portion.

Abstract: Hindered alkenyl phenols, all of which can be used as antioxidants, and some of which can be used as monomers, can be prepared by the dehydrohalogenation of the .alpha.-haloalkyl phenol.