Mixtures which are used for the production of polyurethane foam and which contain amines having primary or secondary aliphatic hydroxyl groups, and also customary quantities of trichlorotrifluoroethane and/or trichlorofluoromethane as a blowing agent, can be stabilized against the premature reaction of the components by adding 0.05 to 5% by weight of 2,4-diphenyl-4-methylpentene in which the ratio...

An arithmetic device having successive arithmetic registers connected in cascade, with buffer registers at each end of the cascade. An information exchange circuit bidirectionally connected to all the arithmetic registers for controlling information transfer therebetween such that the first register is connected to all of the other registers and every other register is also connected to a precedin...

(S) alpha -cyano-3-phenoxy-benzyl alcohol having the formula I and a novel process for its preparation and novel intermediates.

Anti-microbial polymeric quaternary ammonium compounds having linear chains which terminate in quaternary ammonium moieties, such compounds being formed by polymerization which is carried out in such a manner that the linear chains thereof are terminated in random fashion, the reaction resulting in the formation of the compounds being a one-step reaction between 1,4-dihalo-2-butene and a mixture o...

A microprogram control circuit interrupts high speed clock signals inputted to a processor when a HALT instruction issues from the processor in order to end operation at completion of a program. The clock signal is provided only when a program is in process. Should a program continue beyond a preselected time period without a HALT instruction, a control circuit including a timer detects this condi...

Ce procédé consiste à mélanger du combustible essentiellement solide avec de l'alcool polyvinylique et de l'oxyde de calcium et/ou de l'oxyde de magnésium en présence d'au moins 1% en poids d'eau, puis à transformer ce mélange en briquettes de façon connue par pressage. Utilisation de ces briquettes par exemple pour le chauffage de fours éventuellement dépourvus d'un dispositif de postcombustion d...

A limited slip differential includes a rotatably mounted differential casing with a pair of side gears rotatably mounted therein. One of the side gears includes an annular clutch plate having a frusto-conical clutch surface. A clutch ring is generally mounted for rotation with the differential casing and is capable of axial movement between a biased non-engaged position and an engaged position aga...

To control transmission ratio of a continuously variable transmission connected to a combustion engine (e.g., for optimal fuel efficiency of a powered vehicle), effective diameter of pulleys is controlled in response to an electrical signal. A control signal suitable for comparison with hydrostatic pressure values is produced by a computing device based on input signals representing load, speed, a...

Polyester reinforcement fibers are treated to improve adhesion to rubber by applying a dissolved aromatic urethane coating to the fibers followed by coating the fibers with a resorcinol-formaldehyde latex and then heating the fibers sufficiently to convert the aromatic urethane to an aromatic isocyanate and applying to and curing a layer of rubber on said treated polyester fibers.

Fixedly arranging an array of electroformed letters or patterns on a product which includes the steps of forming a layer of resist on a metallic plate, electroforming letters, removing the electroformed letters from the plate with adhesive tape, coating each of the exposed surfaces of the electroformed letters with an adhesive, placing the electroformed letters and tape on the product and peeling ...

Heavy metal pollutant ions and emulsified fat are removed from a wastewater stream in a two-stage process. The first stage involves the demulsification and removal of fat through the use of chemical emulsion breakers leaving residual fat in suspension and in solution. The second stage involves the preparation and introduction of a calcium sulfide mixture to the wastewater resulting in the precipit...

The non-flammable rigid foam e.g. used as a building material complies with the requirements of DIN 4102 and which provides a non-toxicity of the combustion fumes according to DIN 53436. It has a mass ratio of resin component:filler of at least 1:2,5 and a bulk density amounting to 50 kg/m3 to 450 kg/m3. The resin component is formed by reaction of 50-62 mass parts resolic resin, 0-15 mass parts f...

Asbestos-free fibre reinforced sheet material comprises from 10 to 35% by weight of a cured elastomeric binder and from 20 to 70% by weight of glass fibres (including ceramic fibres, or mineral fibres or mixtures of these) surface treated with a composition which is readily soluble in the solvent used in compounding the elastomeric binder.

A process for preparing an aqueous adhesive composition which comprises preparing a solvent dispersion by mixing rubber, carbon black, vulcanizing agent, tackifying resin and accelerator with sufficient organic solvent to form a solvent dispersion and thereafter emulsifying the solvent dispersion in the presence of water to form an aqueous emulsion. The aqueous emulsion may be used to bond unvulca...

The blocking characteristics of ethylene interpolymers containing -COOH groups are reduced by treating such polymers with a solution of an inorganic compound of a Group I-A metal such as trisodium phosphate and an organic compound of a Group I-A metal such as sodium acetate or a combination thereof.

The blocking characteristics of ethylene interpolymers containing -COOH groups are reduced by treating such polymers with a solution of an inorganic compound of a Group I-A metal such as trisodium phosphate and an organic compound of a Group I-A metal such as sodium acetate or a combination thereof.

The blocking characteristics of ethylene interpolymers containing -COOH groups are reduced by treating such polymers with a solution of an inorganic compound of a Group I-A metal such as trisodium phosphate and an organic compound of a Group I-A metal such as sodium acetate or a combination thereof.

A process for simultaneously, biaxially orienting tubular ethylene polymer film by expansion and extension of the tube under particular conditions for heating the expanding tube, to give a heat skrinkable film. The heat shrinkable film has excellent heat shrinkability, shrinkage stress, transparency, heat sealability and impact resistance, and is very suited for use in shrink packaging.