Closed cell microcellular foam having cells with diameters of less than 10 mu m and preferably having a density is less than 0.1 gm/cm<3> are prepared from copolymers of alpha -olefin and alpha , beta -monoethylenically unsaturated carboxylic acid. The copolymer is permeated with a blowing agent and ammonia at a pressure of 1.4 to 20 MPag in the presence of an inert gas and subsequently is heat...

In the composite materials, a polypropylene having a high isotactic content, low molecular weight and narrow molecular weight distribution and containing grafted-on carboxyl groups is combined with a glass mat whose fibres are provided with an organosilane size (sizing agent). The composite material has high strength and rigidity and is suitable for automotive parts, for example for seat shells.

PURPOSE:To enhance adhesion between fibers and a rubber compound and improve flexural stability and water resistance, by a method wherein fibers are soaked with a rubber cement incorporating a urethane-modified epoxy resin, and are brought into close contact with an unvulcanized rubber, followed by vulcanization. CONSTITUTION:The fibers, preferably, glass fibers, aromatic polyamide fibers, aliphat...

A process for the manufacture of a resilient foam based on a melamine-formaldehyde condensate, wherein an aqueous or alcoholic solution or dispersion containing a melamine-formaldehyde precondensate, an emulsifier, a blowing agent and a hardener is foamed by ultra-high-frequency irradiation and the foam is hardened by crosslinking the precondensate. The foam may be employed for heat and sound insu...

PCT No. PCT/DK86/00004 Sec. 371 Date Oct. 31, 1986 Sec. 102(e) Date Oct. 31, 1986 PCT Filed Jan. 10, 1986 PCT Pub. No. WO86/04013 PCT Pub. Date Jul. 17, 1986.Method for the production of building elements preferably brick facings by granulation of a mixture of 40-60% by weight of cement, 60-40% by weight of aggregate, 0.5-2% by weight of thickening agent such as carboxymethylcellulose and preferab...

The film (11) extruded from a vinylidene fluoride polymer is subjected to a stretching of at least 200% while still in the molten state, and then cooled rapidly to a temperature below 50 DEG C. The equipment comprises, in series, an extruding device (1) (2), a cooling device consisting of a thermostatically controlled liquid bath (6), the level of which is located at a distance of 10 to 300 mm fr...

An optical phase plate in the form of a drawn and oriented film or sheet having a composition comprising a vinylidene fluoride resin and a methyl methacrylate resin in a mixing ratio of the former to the latter between about 65/35 and about 85/15 by weight, in which the crystal structure of the vinylidene fluoride resin is mainly consists of a beta -form and the film or the sheet has a dimensiona...

An acoustic window intended for land transport vehicles is proposed. Its index of acoustic attenuation differs by no more than 5dB from an index increasing by 3dB per octave from 800 to 2000 Hz, and by 1 dB per octave above this range. The examples are doubled-glazed windows or laminated windows in which the intermediate layer has a high attenuation. It is effective with respect to aerodynamic noi...

1. Addition-crosslinking impression compounds or duplication compounds, in particular for the dental field, based on silicones and consisting of A) a base component consisting of a) organopolysiloxanes having 2 or more vinyl groups in the molecule, b) organohydrogenpolysiloxanes as crosslinking agents and c) untreated or surface-modified inorganic fillers and B) a catalyst component consisting of ...

An apparatus for butt-welding longitudinally slotted plastic profiles 1 for windows or the like has at least one welding head 4, which has two profile clamping units 5, which can be displaced in relation to each other, and a heating mirror 6, which can be introduced between the mitre-cut ends of two profiles 1 to be welded. To be able also to weld profiles 1 already fitted with window panes 3 and ...

There are disclosed compounds of the formula in which R<1> is an alkenyl or alkynyl group optionally substituted with an optionally substituted phenyl group and containing from 5 to 30 carbon atoms, and R<3>, R<4> and R<5> are each selected from hydrogen, carboxyl, C2-5 alkoxycarbonyl, C1-4 alkyl, C1-4 alkoxy, hydroxyl, optionally protected tetrazolyl, halo, trifluoromethyl, nitrile, nitro...

Compounds of formula wherein R<1> represents: an optionally substituted alkyl, alkenyl, or alkynyl group ; or an optionally substituted cycloalkyl group; or an optionally substituted cycloalkenyl group ; or a group such as aryl, aralkyl, COOR<3>, COR<3>, CN, NO<2>, NR<3>R<4>, OR<5>, halogen atom. R2 represents a group such as NO<2>, CN, R<5>, S(O)mR<5>, SO2NR<3>R<4>, COOR<3>, COR<3>, CONR<...

A pallet made of corrugated material employs stringers in which panel portions therewithin are secured in oblique positions, against the external sidewall panel portions to afford enhanced lateral stability and resistance to failure.

PURPOSE: To enhance the corrosion resistance of the surface of aluminum or aluminum alloy by first coating the surface of the aluminum or aluminum alloy with a thermally dryable lacquer system, then forming a UV-protective lacquer film thereon. CONSTITUTION: The surface of the aluminum or aluminum alloy is coated with the thermally dryable lacquer system. The UV-protective lacquer film is then lam...

PURPOSE: To obtain high strength with low material requirement by having a molding surface, inserting a tube of a polymeric material into an open and hollow mold, applying an internal pressure under thermoplastic conditions to inflate the tube, forming and subsequently cooling the cage profile so as to remove it from the hollow mold. CONSTITUTION: A tube comprising a polymeric material is introduc...

A method for timing audio and video component signals of a television signal with coincidental markers generates (22-24) a field pulse every Nth field of the television signal at the transmitter. The duration of the field pulse is approximately one video field, and is used to enable an audio tone generator (30) for the one video field and to switch (10) a distinctive video signal, such as a flat v...

This invention relates to activated electrophilic ketone analogs of certain peptidase substrates which are useful in inhibiting serine-, carboxylic acid- and metallo- proteolytic senzymes, the inhibition of which will have useful physiological consequences in a variety of disease states.

This invention relates to a device for exploiting the maximum drive unit torque of the drives of vehicles (35) or conveyers, which vehicles (35) are movable in an optional direction or which conveyers permit transport of objects in an optional direction, the vehicle (35) or the conveyer having at least two driven means (H1, H2, H3, H4) with oblique ground contact elements (41), the driven means be...

In order to rough-cast a wet and/or salt containing masonry work there is applied on all the surfaces a trowel-projected rough casting containing damp proof additives as well as pore-forming additives and/or light porous aggregates, said rough casting being coated after hardening with a preferably porous sweetening rough casting.

In a memory system comprising a plurality of memory units (10) each of which possesses unit-level error correction capabilities (20) and each of which are tied to a system level error correction function (30), memory reliability is enhanced by providing means (Fig. 2) for disabling the unit-level error correction capability, for example, in response to the occurrence of an uncorrectable error in o...