Aliphatic polyketones prepared from carbon monoxide and at last one ethylenically unsaturated hydrocarbon are surface derivatized to improve their properties e.g. tribological, paintability and conductivity properties. The surface of the polyketone is silylated by treatment with an aminosilane, or by reduction of the carbonyl groups at the surface followed by silylation using a halogenated silane ...

The device consists of a planar oscillating structure (13) which is free to move relative to a supporting substrate (12) in response to angular velocity or an acceleration. A set of segmented interdigitated comb electrodes (161, 162) are applied to the oscillating element (13) separated from one another by insulating areas (160). These interlink with electrodes (171) mounted in fixed relation to t...

An improved electrical submersible pump is disclosed in which a processor (37) downhole is utilized to monitor one or more subsurface conditions, to record data, and to alter at least one operating condition of the electrical submersible pump (23). Novel uses are described for downhole gas compression, the delivery of particulate matter to wellbore sites, and for the disposal of waste.

Forming domains of high crosslinking density in an elastomer matrix comprises: (a) loading a carrier having a m.pt. above the mixing temp. of a green elastomer and below the curing temp. of the green elastomer, with 10-40 wt.% curing agents; (b) forming the carrier into fibres having a dia. of 0.001-0.050 ins. and an aspect ratio of 1-100; (c) mixing the fibres with a green elastomer; and (d) curi...

A process for the production of fireproof poly-methacryl-imide foam comprises adding a conventional fire retardant and 0.1-4 wt% epoxy resin to the polymerisation mixture for the foam.

Extruded polystyrene (PS) foam slab with a minimum thickness of 20 mm which is produced with halogen-free blowing agents (I), containing closed cells which are free from halogen- containing gases and with a thermoplastic matrix consisting of PS with an average mol. wt. (Mw) of 175,000-500,000 and a heterogeneity of Mw/Mn = more than 2.6. Also claimed is a process for the production of foam slab as...

A siloxane composition is described that is useful as a silicone die attach adhesive. Said composition cures both through the free radical reaction of acrylic-functional organopolysiloxane as induced by exposure to high-energy radiation and through the hydrosilylation reaction between alkenyl-functional organopolysiloxane and silicon-bonded hydrogen-functional organopolysiloxane. Also claimed is a...

A carrier for a bioreactor comprises an organic polymer substance which contains at least one inorganic salt, organic nitrogen source or organic carbon source utilizable as a nutrient by animal cells, plant cells and/or microorganisms useful in the bioreactor and exhibits a water absorptivity of 50 to 1,700%. A method of biologically purifying wastewater in the presence of activated sludge compris...

A method of producing a substantially open-cell, expanded polystyrene sheet, comprising the steps of: forming a mixture comprising from 30 to 95% of polystyrene incorporating an aliphatic hydrocarbon with 4-6 carbon atoms, from 0 to 65% of polystyrene, and from 0.2 to 10% of a nucleating agent, mixing the mixture obtained and melting it by heating inside an extruder, bringing the mixture to a te...

An acrylic resin brittle film prepared from a resin composition which comprises (A) 100 parts by weight of an acrylic resin having an elongation at break of 10 to 180 %, (B) 10 to 70 parts by weight of at least one type of filler selected from the group consisting of (a) fused silica, (b) aluminum hydroxide, (c) barium sulfate, and (d) calcium carbonate, each having a specific average diameter of ...

Poly(3-hydroxybutanoic acid) having a number average molecular weight of not less than 500,000 is oriented at a draw ratio of 2-fold or more to reproducibly obtain a film made of poly(3-hydroxybutanoic acid) having biodegradability and biocompatibility as well as sufficient strength and flexibility (for example, tensile strength of not less than 30 MPa and elongation to break of not less than 15%)...

A vibration damper detects vibrations of brake pads (3) and vibrates the pads (3) in such a way as to damp the vibrations detected. The damper has the function of adjusting control constants of a control circuit (10) according to the degree of deterioration with time, of the pads (3) due to wear so that vibrations of the pads can always be damped in an optimum manner. A vibration detector (7) mean...

A decision support apparatus for emergency operations is provided to support in order that each post of local governments and the associated organs can quickly and accurately take measures against occurrence of a disaster such as a natural calamity or an unexpected incident. In addition, a computer-readable recording medium is provided to store therein an execution procedure for supporting decisio...

A method for stabilizing the silicon removal rate during chemical-mechanical wafer polishing, the method comprising the steps of circulating a polishing slurry (28) in a chemical-mechanical wafer polishing apparatus (10) and agitating the polishing slurry to adjust both the redox potential and pH of the polishing slurry, to dissolve SiOx aggregates in the polishing slurry and to minimize or elimin...

Zunächst werden zur Permanenterregung vorgesehene magnetisierbare Schalenteile (1.2) am Innenumfang des Motorgehäuses (1.1) angeordnet, dann der Rotor (1.3-1.6) mit einem freien Wellenende in das Motorgehäuse (1.1) gesteckt und vorpositioniert, dann die Schalenteile (1.2) durch eine äußere Magnetisierungsvorrichtung (1.1;1.2) magnetisiert und schließlich ein hochpolig magnetisiertes Polrad (3) als...

A business transaction network including a wireless communication link for coupling a plurality of card transaction terminals (10) to a host computer (14) through a limited number of lines connected to the public switched telephone network (PSTN 12). The wireless link includes interface units (20, 24) for interfacing with the terminals and with the PSTN (12) and encoding and decoding digital data ...

A method for managing particulate in a chemical-mechanical polishing slurry (28), the method comprising circulating the polishing slurry (28) in a chemical-mechanical wafer polishing apparatus (10), passing the polishing slurry through a filtration system (39) and filtering the particulate, including aggregates, precipitates and particles of SiOx created during the polishing process, out of the po...

This invention concerns biaxially oriented polypropylene films containing from 1 to 40 percent by weight of a hydrocarbon resin, the resin being substantially miscible with the polypropylene, and the film having a crease retention of at least 50% as measured by ASTM D920-49. The hydrocarbon resin is preferably a terpene resin, a hydrogenated synthetic resin or a compatible rosin. Crease retention ...

PCT No. PCT/JP94/00700 Sec. 371 Date Nov. 2, 1994 Sec. 102(e) Date Nov. 2, 1994 PCT Filed Apr. 26, 1994 PCT Pub. No. WO94/25516 PCT Pub. Date Nov. 10, 1994.Disclosed is an expanded foamed bead of a rubber-modified styrene polymer, comprising a plurality of closed cells defined by cell walls which constitute a matrix for the bead, wherein each of the cell walls comprises two surfaces separated by a...

A porous molded article having microvoids therein which comprises a stretched product of a resin molded material made up of, as the base material, an olefinic resin composition containing from 95 to 50% by weight of a crystalline olefinic resin component (A) and from 5 to 50% by weight of a polymer of a cyclic olefin having a weight average molecular weight of not less than 1,000 and less than 10,...