Abstract: A power transmission belt having a plurality of teeth of elastomeric material positioned along a peripheral surface of said belt, each possessing a predetermined spring rate, and a fabric cover formed over the teeth and over the land portions between the teeth, said fabric cover cooperating with said teeth such that the spring rate of each fabric covered tooth is greater than 1.2 times and less than 3 times the spring rate of such tooth alone.

Abstract: A composition comprising 100 parts of an elastomer selected from the group consisting of EPDM, butyl rubber and a EPDM-butyl rubber mixture; 0.1 to 3.0 parts of a compound having the structural formula [(CH.sub.2).sub.n NCS].sub.2 S.sub.6, where n is 4 or 5; and 0 to 0.5 parts of a sulfur donor curative is disclosed. The composition has particular application as roof sheeting or flashing.

Abstract: In a positive drive power transmission system composed of a toothed belt and two or more pulleys, operating noise resulting from the impact of the belt and the pulleys is dramatically reduced by having surface discontinuities on either the belt or on the pulleys on those surfaces where the belt and the pulleys engage in impact contact when in operation. The surface discontinuities may be formed by recessed or raised portions of the belt or pulleys, may be straight or curved, and may be substantially parallel to the tensile member or at an angle thereto. Several methods of manufacturing belts with such surface discontinuities are disclosed.

Abstract: A process for making a compound of the formula ##STR1## is disclosed wherein: R is C.sub.1 -C.sub.12 alkyl, allyl or benzyl,R.sup.1 and R.sup.2 are hydrogen, halogen, C.sub.1 -C.sub.4 alkyl, or phenyl,R.sup.3 is hydrogen, halogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, CF.sub.3, NO.sub.2, phenyl or phenoxy, m is an integer from 1 to 3 andn is zero or 1,by contacting a compound of said formula where R is hydrogen with certain halohydrocarbons in the presence of solid KOH, a phase transfer catalyst, a solvent and an effective amount of water. The process of this invention permits production of the above compound, useful as a herbicide, without the need for cocatalysts or excess high concentration of NaOH and water.

Abstract: An adhesive for bonding cured EPDM membranes is provided comprising(A) a halogenated butyl rubber(B) a pre-cross linked butyl rubber(C) a styrene/ethylene butylene/styrene block thermoplastic rubber,(D) a thermoplastic petroleum based hydrocarbon feedstock derived aliphatic monomer resin and(E) an aliphatic isocyanate.

Abstract: A process for mon-nitrating a plynuclear aromatic compound essentially in the absence of sulfuric acid and a solvent comprising adding nitric acid to a liquid aromatic compound wherein the molar ratio of nitric acid to the aromatic compound in from 0.75/1 ot 2/1 and the reaction temperature is from 50.degree. to 100.degree. C.

Abstract: High impact strength blends based on thermoplastic polyester resin, aromatic polycarbonate resin and graft copolymers of EPDM or EPM.

Abstract: Thermoplastic elastomeric sequentially prepared propylene and (ethylene-propylene) polymer, or propylene, (ethylene-propylene) and propylene polymer, made in solvent medium with catalyst system based on (a) complex of titanium tetrachloride and alkyl benzoate or a phenol, supported on magnesium dihalide and (b) trialkyl aluminum modified by electron rich substituted benzoate.

Abstract: Blend of polybutylene terephthalate resin and a graft copolymer of styrene and acrylonitrile on olefin copolymer rubber (e.g., EPDM) has high impact strength, provided the blend contains at least 25% of the graft.

Abstract: A blowing agent composition is provided comprising an azodicarbonamid; zinc oxide, zinc carbonate or a zinc salt of C.sub.1 -C.sub.4 organic acid; and an aromatic sulfinic acid or a metal salt of an aromatic sulfinic acid. For each hundred parts by weight of the azodicarbonamid, the zinc oxide, zinc carbonate or zinc salt is 0.25-25 parts by weight and the aromatic sulfinic acid or metal salt is from 1-2000 parts by weight for each 100 parts of the zinc oxide, zinc carbonate or zinc salt. The total weight of the zinc oxide, zinc carbonate or zinc salt plus the aromatic sulfinic acid or metal salt is from 20-25 parts by weight.

Abstract: A method is disclosed for combating the soil insect, corn rootworm which comprises contacting the corn rootworm with an effective amount of N-methyl 2-(1-methylethyl)phenylcarbamate.

Abstract: A composition, extrudable or calenderable into a membrane, comprising 100 parts by weight of a neutralized sulfonated elastomeric polymer, 40 to 250 parts of a non-polar process oil, 5 to 50 parts of a preferential plasticizer selected from the group consisting of a basic salt of a carboxylic acid and an organic amide and at least 65 parts of carbon black. The membrane, made in accordance with the composition of this invention, has particular application as a roof covering.

Abstract: A process for preparing p-nitrosodiphenylamine hydrochloride is provided from N-nitrosodiphenylamine and hydrogen chloride. The product is prepared in the absence of an aromatic solvent and using a solvent consisting essentially of aliphatic C.sub.5 -C.sub.10 alcohol.

Abstract: A reinforced rubber composition is provided comprising a mixture of (a) a sulfur vulcanizable rubber and (b) ground coal having an average mesh size of 25 or more and which produces an aqueous slurry with a pH of less than 7.0, and wherein a metallic reinforcing member is embedded in the rubber mixture of (a) and (b).

Abstract: Mass graft copolymerization carried out in an extrusion passageway having a sealing zone to prevent back flow of grafting material introduced to the extrusion passageway downstream of the sealing zone.

Abstract: A blowing agent composition is provided comprising an azodicarbonamid; zinc oxide, zinc carbonate or a zinc salt of C.sub.1 -C.sub.4 organic acid; and an aromatic sulfinic acid or a metal salt of an aromatic sulfinic acid. For each hundred parts by weight of the azodicarbonamid, the zinc oxide, zinc carbonate or zinc salt is 0.24-25 parts by weight and the aromatic sulfinic acid or metal salt is from 1-2000 parts by weight for each 100 parts of the zinc oxide, zinc carbonate or zinc salt. The total weight of the zinc oxide, zinc carbonate or zinc salt plus the aromatic sulfinic acid or metal salt is from 20-25 parts by weight.

Abstract: An organophosphorus compound of the formula ##STR1## where R and R.sup.1 together form a 1,3-butadien-1,4-diyl group optionally substituted with a chloro group, or R and R.sup.1 together form a 1,2-ethenediylthio group wherein sulfur is attached to carbon; R.sup.2 is hydrogen, chlorine or bromine; X is O or S; R.sup.3 is C.sub.1 -C.sub.2 alkyl; and R.sup.4 is C.sub.1 or C.sub.2 alkoxy or propylthio is disclosed. The organophosphorus compounds defined above are effective in the control of insects, nematodes and acarids.

Abstract: An olefin copolymer rubber graft composition having a viscoelastic performance index of not greater than 100 as defined by the expressionPI=(DS.times.MV)/i.v.where DS is the die swell of the composition, MV is the melt viscosity of the composition and i.v. is the intrinsic viscosity of a resinous portion extracted from the composition.

Abstract: The invention comprises a novel stabilizing system useful for imparting resistance to oxidative breakdown comprising:(1) a metal deactivator azine of the formula: ##STR1## where: R.sub.1 and R.sub.2 can be hydrogen, alkyl with 1-12 carbon atoms, alkoxy with 1-12 carbon atoms, carbalkoxy with 1-12 carbon atoms, halogen, hydroxy, nitro and amino groups and X.sub.1 and X.sub.2 can be hydrogen, alkyl with 1-12 carbon atoms or di-, tri- or tetramethylene bridges to the aromatic ring.(2) an amine;(3) a metal compound selected from the group consisting of metals or metal salt; and(4) a lubricating oil selected from the group consisting of mineral oils or synthetic hydrocarbon oils.

Abstract: A process is provided for oligomerizing alpha-olefins comprising contacting in a reaction zone under reaction conditions: (a) alpha-olefins having at least three carbon atoms; (b) an aluminum compound having the formula R.sub.3 Al, wherein R is an hydrocarbyl group and (c) a cocatalyst which is hydrocarbyl halide having at least one halogen group reactive with said aluminum compound, elemental bromine or elemental iodine.