The prodn. of flexible foam comprises reacting di- or poly- isocyanates with cpds. contg. at least two NCO-reactive H atoms in the presence of a blowing agent (II) and opt. other additives. (II) is a mixt. contg. 1,1,1,2-tetrafluoroethane (TFE) and at least one other cpd. selected from 1,1-difluoroethane (DFE) and readily volatile organic cpds. with a b.pt. below 105 (pref. below 80) degrees C, i....

A carcass for a self-sealing pneumatic tire is constructed by starting with an extruded thin flat strip of puncture sealant both surfaces of which are detackified. The strip is place on a building drum and its upper surface is wiped clean so that an inner liner may be adhered to it. Thereafter, the carcass is conventionally completed with superimposed successive layers of belts, and tread along wi...

A method and an assembly for decontaminating a material. The material is charged into a container (2), where at first steam (4) is introduced and fluids including some contaminants are removed. Then extractant (6) is introduced into the container (2), and fluids (8) comprising condensation water, extractant and contaminants are removed. Then the material is stripped with vapour. The dry or slightl...

Integrated air sepn. comprises: (a) sepg. air by compressing a feed air stream, cooling the stream to a temp. suitable for its rectification, rectifying the air so that a waste stream is produced, and warming the waste stream; and (b) pre-purifying the feed air stream prior to its cooling by a pressure swing adsorption (PSA) process to produce a purified air stream. The PSA process comprises subje...

An ethylene polymer having a Polydispersity Index of at least about 3.0, a melt index, MI, and a Relaxation Spectrum Index, RSI, such that (RSI)(MI< alpha >) is greater than about 26 when alpha is about 0.7, and a Crystallizable Chain Length Distribution Index, Lw/Ln, less than about 3 is provided. Such ethylene polymer has processability equivalent or superior to even conventional high pressure...

A tread conditioning unit for applying a brake block (3) against the tread of a rail vehicle wheel comprises a pneumatic cylinder (1) having a piston (9) with a piston rod (11). A block holder (2) for the brake block is pivotably connected to the piston rod by means comprising a pivot sleeve (19) rotatably attached in the end of the piston rod facing the block holder, which is provided with a circ...

An ethylene polymer having a Polydispersity Index of at least about 3.0, a melt index, MI, and a Relaxation Spectrum Index, RSI, such that (RSI)(MI< alpha >) is greater than about 26 when alpha is about 0.7, and a Crystallizable Chain Length Distribution Index, Lw/Ln, less than about 3 is provided. Such ethylene polymer has processability equivalent or superior to even conventional high pressure...

The present invention relates to biodegradable PHA copolymers comprising at least two randomly repeating monomer units (RRMU) wherein the first RRMU has structure (I) wherein R<1> is H or C2 alkyl, and n is 1 or 2; the second RRMU has structure (II); and wherein at least 50 % of the RRMUs have the structure of the first RRMU. The present invention further relates to plastic articles comprising sai...

The present invention relates to a method of preparing a polyester comprising polymerizing at least one beta -substituted- beta -propiolactone in the presence of an initiating amount of alkylzinc alkoxide in bulk or in solvent for a reaction time and temperature sufficient to produce said polyester.

The present invention relates to fibers, and nonwovens comprising said fibers, comprising a biodegradable copolymer, wherein the copolymer comprises at least two randomly repeating monomer units (RRMU) wherein the first RRMU monomer unit has the structure and the second RRMU has the structure wherein at least 50% of the RRMUs have the structure of the first RRMU. The present invention further rela...

The present invention relates to biodegradable PHA copolymers comprising at least two randomly repeating monomer units. The present invention further relates to a plastic article comprising a biodegradable copolymer, wherein the biodegradable copolymer comprises at least two randomly repeating monomer units (RRMU) wherein the first RRMU has structure (I), wherein R<1> is H, or C1 or C2 alkyl, and ...

Shaped articles with a coherent matrix which comprises homogeneously arranged inorganic solid particles A of a size of from about 50 ANGSTROM to about 0.5 micron, such as silica dust particles, and densely packed solid particles B having a size of the order of 0.5-100 micron and being at least one order of magnitude larger than the respective particles A, such as Portland cement particles, the p...

A method of information transmission from above-ground to a downhole information receiver (esp. within a drilling tool), during drilling with mud circulation by an above-ground mud pump, comprises transmitting the information as mud flow rate changes which are detected and evaluated by the information receiver. The novelty is that the mud flow rate, produced by the mud pump, is changed in a region...

Drilling tool steering is achieved by a group of actuators distributed over its circumference. Whilst drilling subterranean formations, sensors on the tool determine bore direction and actuator settings, in conjunction with an integral programmable computer. This compares actual and desired values to develop a control output to the actuators. The tool internal control loop, exchanges data with an ...

PCT No. PCT/SE89/00138 Sec. 371 Date Nov. 1, 1990 Sec. 102(e) Date Nov. 1, 1990 PCT Filed Apr. 16, 1989 PCT Pub. No. WO89/10793 PCT Pub. Date Nov. 16, 1989.In a centrifugal separator there is formed within the rotor a separating chamber (7) and a central chamber (26), which latter communicates with a peripheral part of the separating chamber through a channel (19a, 19b). The part (19a) of the chan...

PCT No. PCT/FI94/00376 Sec. 371 Date May 31, 1996 Sec. 102(e) Date May 31, 1996 PCT Filed Aug. 26, 1994 PCT Pub. No. WO95/06004 PCT Pub. Date Mar. 2, 1995Waste water sludge which contains phosphorous, heavy metals and at least one metal originating from a waste water treatment coagulant, is treated in order to recover the phosphorous and the at least one metal, and to discharge the heavy metals. T...

PCT No. PCT/FI95/00717 Sec. 371 Date Aug. 18, 1997 Sec. 102(e) Date Aug. 18, 1997 PCT Filed Dec. 29, 1995 PCT Pub. No. WO96/20894 PCT Pub. Date Jul. 11, 1996The invention relates to a method for treating waste water sludge comprising at least one metal originating from a waste water treatment coagulant, and phosphorus and heavy metals in order to recover said at least one metal and phosphorus and ...

A method of producing a porous material having open pores comprises stirring a mixture comprising (i) an epoxy compound having at least one epoxy ring in a molecule, (ii) a hardener capable of reacting with the epoxy compount to harden the epoxy compound, (iii) a filler and (iv) water to form an emulsion slurry having a low viscosity and containing the soluble salts uniformly dispersed therein, ca...

Heat-sealable and peelable film for polystyrene containers, consisting of at least one film comprising a mixture (a) of polystyrene, (b) of one or more copolymer(s) of ethylene and of acrylic derivatives. Also a process for sealing a polystyrene container by means of the said film and the heat-sealed polystyrene container thus obtained.