A thermoplastic synthetic resin such as polyethylene or ethylene-vinyl acetate copolymer resin containing 0.1 to 10 wt. % of a specific additive selected from specific classes of compounds, namely saturated higher fatty acid amides, saturated higher aliphatic amines and complete esters of saturated higher fatty acids is found to be very suitable for production of expanded articles and can be easil...

Process for preparing homogeneous compositions of olefinic polymers in flakes and of additives, suitable for the direct transformation into manufactured articles, consisting in mixing the polymer with the additive and with a third component, acting as coupling agent, selected from the class consisting of liquid or solid paraffinic compounds having a linear or branched chain, comprising from 2 to 5...

An easily-pumpable liquid alkali metal silicate composition, having controlled gelling characteristics and comprising water, an alkali metal silicate and glyoxal, also contains hydrogen peroxide in an amount of 0.02 to 0.7 mole per mole of glyoxal, i.e. an amount in the range from 0.025 to 0.18 mole of hydrogen peroxide per litre of composition. The composition also optionally contains a Group I-I...

A vehicle transmission (not shown) is provided with a device for preventing the engagement of a gear (such as reverse) at a too high speed. A speed selector 1 compares a speed analogue signal F from a transmitter 3 with a threshold value. if the speed is above a predetermined level, the selector 1 generates a first input signal V and feeds it to a logic selector 2. A state-of-the-transmission indi...

Novel aqueous oil emulsions, in particular self-absorbent paraffin emulsions for engine sizing (pulp sizing) in papermaking, contain, in an aqueous phase, 2-70% (based on the total weight) of an oil and, as polymeric emulsifier, 2-10% (based on the weight of the oil) of a water-soluble polyelectrolyte comprising 10-40% by weight of an unsaturated polymerisable monomer containing an ammonium group ...

The method makes it possible to generate, by manual data acquisition (for example by the client via videotex or a self-service terminal) or by automated document reading (for example at the first financial institution commissioned) of only a few numeric information items, undocumented data records which, due to the beneficial redundancy of the data (in matters of information theory) make it possib...

In the process, to obtain cash at home and abroad at the counters of financial institutions and to pay for goods and services in cash-on-delivery stores at the tills of appropriately equipped point-of-sale (POS) systems, a bank card in conjunction with a payment order is used. In order to preserve the dualism of two media which have high-level security and which also seem expedient in future for r...

To obtain a UF foam which is low in formaldehyde, yet is dimensionally stable, up to 96% urea is dissolved in an approximately 10 to 30% aqueous extract of an alkyl, aryl or alkaryl sulphonic acid, said solution being mixed with a conventional hardener/foaming agent solution containing the sodium salt of an alkyl, aryl or alkaryl sulphonic acid in an aqueous diluent usually employed for foaming, i...

A fluidized-bed combustion system for a boiler, a heating furnace for heating steels or the like, in which a plurality of gas distribution pipes are disposed at the bottom of the combustion chamber. The lower end of each gas distribution pipe is communicated with an air supply line with an air flow rate control valve and a fuel supply line with a fuel flow rate control valve and the air and fuel a...

The invention relates to a device for connecting flanged pipes. For this purpose, a multiple-section clamp is mainly used which includes inwardly protruding flanges engaging beyond the collars of the pipe ends. An annular profiled seal forms an approximately U-shaped hollow profile with the shanks which are formed as sealing lips and which abut against the peripheral surfaces of the collars. The a...

In a dry-shaving apparatus which is adapted to be connected to an a.c. source and which comprises at least one reciprocating cutter, there is provided a self-starting single-phase synchronous motor for driving the cutter. Via at least one drive mechanism, which couples the drive spindle of the motor to the cutter and which converts the rotary movement of the drive spindle into a reciprocating move...

An epoxy resin composition having excellent adhesive and high mechanical strength is disclosed. The composition comprises: (A) a bisphenol A type epoxy resin present in an amount of at least 45 wt % of the total epoxy resin; (B) a novolak type epoxy resin present in an amount of at least 8 wt % of the total epoxy resin; (C) a glycidyl amine type epoxy resin (including the one used in (D)) present ...

A method is provided for making certain methoxy-substituted silyl benzophenones useful as ultraviolet light absorbing agents for silicone hardcoat formulations. The methoxy-substituted benzophenones have been found to more readily equilibrate into silicone hardcoat formulations without adversely affecting the shelf-life of the resulting formulation. The ultraviolet light absorbing agents are obtai...

An aqueous phenol formaldehyde resole, suitable for use in the manufacture of phenolic foam insulation, has a molar ratio of formaldehyde to phenol in the range of from about 1.7:1 to about 2.3:1, and a weight average molecular weight greater than 800. Preferably, the resole also has a number average molecular weight greater than 350 and a dispersivity greater than about 1.7. Phenol formaldehyde r...

A foamable phenolic resole composition is foamed and cured with an acid curing agent which is an anhydrous aryl sulfonic acid which has a pKa of less than about 2.0 and which reduces the compatibility of the resole with water, e.g. benzene, toluene or xylene sulfonic acids. The phenolic foam formed has cell walls which are substantially free of perforations. The preferred anhydrous aryl sulfonic a...

A closed cell phenolic foam having a cell structure in which the cell walls are substantially free of both ruptures and perforations is made by foaming and curing a foamable phenolic resole composition containing an aqueous phenol formaldehyde resole, a surfactant, a blowing agent and optionally other additives, with an acid foaming and curing agent which is an anhydrous aryl sulfonic acid which h...

In a process for the production of a shaped article involving the remelting of a polyamide which has been subjected to a drying stage, such as that which occurs during solid phase polymerisation, the stage of conditioning the polyamide prior to remelting can be reduced or even avoided by adding a controlled amount of water to the polymer when molten or immediately prior to its remelting.

A method of manufacturing integrated capacitors in a semiconductor body coated with a multilayer wiring network constituted by two patterns which are separated by insulating layers, in which method on a first insulating layer is deposited a metal layer from which a dense layer is formed by anodic oxidation, which layer is then subjected to a photo-etching treatment in order to form a dielectric of...