Abstract: This invention discloses an extruder head having a cavity whose shape can be visualized with reference to a model. The model is a circular tube having a wall thickness which is constant at any given distance from one end. The tube is split longitudinally at or near one end and unfolded gradually into the form of a flat sheet at the other end. Extrudate which enters the cavity in a solid, circular cross-sectional configuration is shaped into the form of the unsplit portion of the model by a mandrel in an entrance zone. A divider splits the extrudate longitudinally. The cavity continues as a transition zone in which the split tube of extrudate is unfolded gradually to become a flat sheet in an exit zone. Variations in the shape of the cavity in the exit zone are presented in which the extrudate is formed into shapes more complex than the flat sheet.

Abstract: Disclosed are N-substituted triorganostannylhydrocarbylcarboxylic acid hydrazides useful as insecticides.

Abstract: A pneumatic tire having a tread design for reducing the amount of noise generated by the tire when rolled on a given surface, is disclosed. The tread comprises a plurality of circumferentially spaced lugs defining therebetween respective grooves, the lugs all being substantially similar to one another in configuration. Each of the lugs and its corresponding groove adjacent thereto in a given circumferential direction together defining a pitch of specified length which circumferentially is dimensionally identical to the pitch of certain others of the lugs and their corresponding grooves and is yet dimensionally different from the pitch of still others of the lugs and their corresponding grooves.

Abstract: N,N'-disubstituted sulfonyl hydrazine with the following structural formula are disclosed:R(SO.sub.2 NR.sup.1 NHR.sup.2).sub.nwherein the R.sup.1 and R.sup.2 groups are the same or different and are either --COOR.sup.3 or --CONHR.sup.4. These novel compounds are useful as high temperature blowing agents for gas-expandable polymers.

Abstract: A no-gel latex foam is formed by curing a no-gel latex foam froth on a water vapor permeable foraminous support that has been coated with a flock. During curing, the foam froth dehydrates through an upper free surface and at its lower supported surface through the flock and the foraminous supporting means. When the cured foam is removed from the foraminous supporting means, a portion of the flock adheres to the foam undersurface and another portion of the flock is left as a residue.

Abstract: The pneumatic tire has a reinforcing belt that is asymmetric with respect to the equatorial plane of the tire. The reinforcing belt includes a ply folded to form confronting main and auxiliary portions, with the fold being situated at an axially internal edge of the tire. Other embodiments of the reinforcing belt include a supplementary ply preferably positioned adjacent the auxiliary ply.Further embodiments of the tire include a tread having sculpture characteristics that differ from the axially internal side of the equatorial plane to the axially external side thereof, with provision for the reinforcement belt to be of lesser diameter at an axially external edge of the tire than at an axially internal edge thereof.

Abstract: A fire retardant system comprising a compound having within its structure the 1,2,3,4,9,9-hexahalo-1,4-dihydro-1,4-methanonaphthalene-5,8-dione or 1,2,3,4,9,9-hexahalo-1,4-dihydro-1,4-methanophthalene-5,8-dioxy nucleus or a compound which is capable of being converted to the 1,2,3,4,9,9-hexahalo-1,4-dihydro-1,4-methanonaphthalene-5,8-dione nucleus and requires no metal oxide addition to exert its function.

Abstract: Substituted thiophenes of the following formula, some of which are new compounds, are useful in controlling certain pests, particularly mites: ##STR1## wherein A, Y and Z are various substituents such as phenyl and substituted phenyl.

Abstract: Novel blowing agents are disclosed comprising 3,3'-carbonylbis(organo carbazates). The organo group may be alkyl, cycloalkyl, aryl or aralkyl moieties. In the preferred embodiment the organo group is an alkyl group selected from the group consisting of methyl, isopropyl, secondary butyl or tertiary butyl. The blowing agents find utility in the preparation of expanded organoplastic materials such as rubbers, thermosetting resins and thermoplastic resins.

Abstract: Graft copolymers of resin-forming monomers on monoolefin-type rubber spines, particularly ethylene-propylene-non-conjugated diene rubber spines, are made in solution with the aid of a free radical polymerization initiator. The graft copolymers have high impact strength.

Abstract: A pneumatic tire having a "run-flat" capability, is disclosed. The tire is in the form of a substantially toroidally shaped carcass having a pair of bead-reinforced sidewall regions and a crown region annularly bridging the sidewall regions. Internally of the carcass, there is provided an expandable nail-deflector for deflecting a nail that punctures, for example, the crown region. The nail deflector has a releasably constrained normal condition when the crown region is puncture-free that is annularly spaced from the interior of the crown region, and is circumferentially self-expandable into engagement with the interior of the crown region upon puncture of the latter by a nail to deflect such nail harmlessly away from its path of entry.

Abstract: The protective package device, which can be varied in size to accommodate articles within a given dimensional range, includes a plurality of insert members, and a given number of corner sleeve members corresponding to the number of corners of the article being enclosed.An insert member when folded in one fashion engages straight sides of the article, and when folded in another fashion engages a corner portion of the article. The corner sleeve members are installed after the insert members are engaged with the article and are sized to overlap each other when installed on articles within the given dimensional range. The corner sleeve members can thus telescopically expand or contract to different package sizes determined by the enclosed article.

Abstract: Non-dripping, self-extinguishing polyurethane elastomers comprising, a hexaalkoxymethylmelamine; an organic halogen-containing a compound and a P-substituted phosphocyclopentane 1-oxide incorporated into a polyurethane elastomer.

Abstract: A fastening device for fastening together flexible belts having reinforcing cords therein and a method of fastening in which damage to the reinforcing cords of the belts is minimized. The fastening device may also be utilized to attach a rigid plate having an aperture therein to a flexible belt having reinforcing cords therein to minimize damage to the reinforcing cords of the belt.

Abstract: Tetrasubstituted organotin compounds, which are useful for controlling insects and other pests, are disclosed. Many of these organotin compounds are new compounds.

Abstract: Disclosed is a novel polybutadiene or butadiene-styrene copolymer based gum plastic having excellent impact strength and weather aging resistance and a method for its preparation. The ABS composition of the invention is a matrix of a polymer of at least one monoethylenically unsaturated monomer and a graft copolymer comprising a graftable rubber substrate which is formed from a mixture of an at least partially cross-linked pre-grafted polybutadiene or SBR spine latex, and a low-gel elastomer which has been at least partially cross-linked during the preparation of the product. Within certain ratios of cross-linked spine to low-gel spine, significant improvements in impact strength and weather aging resistance are achieved. In the method of preparation, the latex, monomers and low-gel elastomer, are converted directly to the final product by a conventional suspension polymerization process.

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 stabilizer suitable for use to protect organic materials into which it is soluble or miscible against oxidative degradation having the general formula ##STR1## wherein R.sub.1 and R.sub.2 are lower alkyl or a radical of the structure ##STR2## wherein "x" represents a tertiary butyl radical.

Abstract: A pneumatic insert for a pneumatic tire comprises a generally toroidal shaped hollow member having a pair of annular insert beads with sidewalls extending therefrom joined to an insert crown portion. An annular flap portion is joined to the outer surface of each insert sidewall at the bead area and extends beyond each bead a predetermined amount.The pneumatic insert is disposed in a standard tire and mounted on standard rim. The insert flaps are tucked between the respective insert beads and the bead support surface of the rim to provide a leak-tight seal. When the insert is inflated the insert beads push the respective tire beads against the rim flange. In one embodiment the tire is inflated through an air passage member disposed between the tire and insert beads. In another embodiment the tire is inflated directly through the tire sidewall with a hypodermic needle. The insert inflation chamber and the tire inflation chamber do not communicate and can be inflated to different pressure levels.