Abstract: A method for preparing polyurethane by spraying a mixture of(a) polyurethane prepolymer, and(b) curative which gives a tack-free time of 15 seconds to 5 minutes,wherein (a) and/or (b) contain a lactone as viscosity modifier.

Abstract: This invention relates to flame-retarded cross-linked elastomer compositions obtained from an elastomeric polyurethane prepolymer; an organic fire-retardant additive containing chlorine and/or bromine; a compound of antimony; and a hexaalkoxymethyl melamine. These new compositions are self-extinguishing as well as non-dripping.

Abstract: A compound of the formula ##STR1## is useful in protecting organic materials normally subject to oxidative degradation. Among the products benefiting from the incorporation of this phenolic antioxidant are synthetic and natural rubbers, petroleum products and plastics.

Abstract: Thermoplastic elastomeric blend of:(A) EPM or EPDM type rubber;(B) amorphous polypropylene homopolymer or copolymer resin; and(C) crystalline polyolefin resin,characterized by improved processability and physical properties.

Abstract: A run-flat insert structure for a pneumatic tire is disclosed in which the insert structure comprises a homogeneous elastomeric material and is fully enclosed and pneumatically inflated. The insert structure is mounted within the cavity formed by the pneumatic tire and the wheel rim upon which the tire is mounted. The insert structure is shaped and spaced from the interior walls of the tire such that contact between the insert structure and the interior tire walls is minimized during rated load carrying and inflation conditions of the tire. The volume of the insert structure is less than 50% of the volume of the cavity formed by the tire and the wheel rim to thereby assist in avoiding undesirable contact between the insert structure and the tire. During the deflated condition of the tire, the insert structure supports the tire and its load at a deflection that prevents excessively rapid deterioration of the tire while running in the deflated, run-flat condition.

Abstract: Sulfonyl carbazates containing at least one group of:--SO.sub.2 --NHNH--COO--wherein the oxygen and the sulfur atoms attach to various organic groups are useful as high temperature blowing agents for gas-expandable polymers. Additionally, novel polyfunctional and secondary-alkyl substituted sulfonyl carbazates have been discovered.

Abstract: A method of making a notched variable speed belt or a notched V-belt by placing the layers of the belt around a smooth cylindrical mold, placing an endless elastomeric sleeve having ribs on its inner surface, around the mold and layers thereon and applying heat and pressure to urge the sleeve against the belt layers to form a cured belt slab with molded grooves therein. The cured belt slab may then be cut into individual notched V-belts or variable speed belts of high quality.

Abstract: Organotin sulfinates are useful for controlling insects and acarids. Certain of these organotin sulfinates are novel compounds.

Abstract: Dynamically partially cured blends of monoolefin copolymer rubber with a polyolefin resin and a conjugated diene rubber are thermoplastic and can be fabricated into useful articles by conventional processing methods such as injection molding or extrusion.

Abstract: New chemicals containing two diphenylaminomethane groups, linked together by a moiety other than oxygen, e.g., 1,2-bis[4-(3-methyl-alpha-amino-benzyl)phenoxy]ethane, are effective antimicrobial agents useful as agricultural or industrial fungicides and bactericides.

Abstract: A thermoplastic composition characterized by high impact strength and flex-resistance, based on a graft copolymer of resin-forming monomer (e.g., styrene-acrylonitrile) on EPDM type of rubber (especially a terpolymer of ethylene, propylene and 5-ethylidene-2-norbornene) having a Mooney viscosity of at least 55 ML-4 at 257.degree. F. and an iodine number of at least 15.

Abstract: A method of making a belted, radial ply tire in a single stage is disclosed wherein a body layer is formed from one or more body plies of cord fabric which are wound around a tire building drum in such a manner that the cords extend parallel to the axis of the building drum. At least a pair of breaker plies of cord fabric are wrapped around the body plies to create a breaker layer with the cords in each breaker ply being oppositely disposed in adjacent plies, extending parallel to one another within each breaker ply and forming a bias angle of from about 50.degree. to about 70.degree. with a circumferential line corresponding to the crown centerline of the completed tire. A strip of high soft stretch reinforcing tape is wrapped helically over the breaker layer at an angle of substantially 90.degree. to a plane including the axis of the body layer to form a 0.degree. cap band preparatory to securing a tread slab over the breaker layer, completing the raw carcass.

Abstract: The production, by either a batch process or a continuous process, of vehicle seat trim pads or like articles of cured polymer no-gel latex foam and having convex or crowned surfaces free of congealed polymer skin, is disclosed. In the process, a backing fabric is first laid on a pervious supporting surface. A no-gel latex foam is then deposited on the fabric, and an open-bottom open-top grid of a height not greater than that of the deposited mass of latex foam is placed into the latter, excess latex foam above the top plane of the grid being scraped off to impart to each pocket or island of foam a smooth and level top surface. The entire assembly is then subjected to dry heat to effect both a rapid dehydration and a curing of the latex foam. During the initial stage of this operation, the no-gel latex foam expands somewhat so that the top surface of each island thereof becomes crowned without having to be disposed in contact with a mold surface of appropriate contours.

Abstract: The use of di- and triaryl-substituted thiazoles as pesticides is disclosed. Insects, such as mosquitos, and acarids, such as mites and ticks, are among the pests which may be controlled.

Abstract: A method for preparing polyurethane by spraying a mixture of(a) polyurethane prepolymer, and(b) curativewherein (a) and/or (b) contain a lactone as viscosity modifier.

Abstract: An anvil for supporting an outsole based upon an elastomeric compound, the outsole having a heel portion of greater thickness than the sole portion, during a process of imparting a multiplicity of slits to the outer surface of the heel and sole portions of said outsole. The anvil has a sole portion extending to a greater height than the heel portion of the anvil, whereby the multiplicity of slits may be imparted to the heel and sole portions of the outsole by a single reciprocating cutting blade in one continuous operation without removing the outsole from the anvil or changing the position of the outsole on the anvil. A method of imparting the multiplicity of slits to the outsole is also provided.

Abstract: The viscosity of synthetic and/or natural elastomers is markedly reduced by incorporation of a particulate, finely-divided basic zinc methacrylate-type adjuvant, without adversely affecting the physical properties of the final vulcanizates. This viscosity reduction allows higher levels of fillers and other rubber compounding materials to be used for improved physical properties, while maintaining the level of compound viscosity necessary for processing.

Abstract: Apparatus for positioning a partially shaped, uncured tire carcass and a tire curing bladder of a lower half-section of a vulcanization mold relative to one another, is disclosed. The apparatus includes the lower half-section of a vulcanization mold from which an inflatable, tire curing bladder extends axially upwardly, the bladder being axially and radially expansible and contractible. A bladder-controlling piston rod is associated with the lower half-section and is used to axially elongate the bladder and thereby radially contract the latter. A circumferentially expansible-contractible tire carcass transporter is associated with the lower half-section and is effective to position a generally toroidally shaped, uncured tire carcass concentrically around the bladder, with the lower bead of the tire in contact with the upper inner surface of the lower half-section. A downwardly projecting cylinder and piston rod assembly is carried concentrically in and by the tire carcass transporter.

Abstract: Thermoplastic blends of partially cured monoolefin copolymer rubber (such as EPM or EPDM rubber) with a polyolefin resin (such as polypropylene) exhibit good physical properties and are reprocessable. The partial cure of the rubber is effected by heating the rubber with a curative such as a peroxide. The blends are used to make molded or extruded articles which have good physical properties without requiring vulcanization; preferred blends have the characteristics of thermoplastic elastomers.