The appts. to unwind a thread from a static bobbin uses a rotating unit, turning round the bobbin axis. The unit has at least one thread passage, displaced from the axis by a greater amount than the wound thread on the bobbin. The rotary unit turns freely through the thread take-off action. The free end of the unit carries a step, and the remainder is a solid disc with several passages at various...

A rigid foam, especially a largely closed-cell polyurethane or polyisocyanurate rigid foam, includes a cell structure being formed by the expansion of rigid foam raw materials with carbon dioxide as an inflating agent. The cell structure is substantially homogeneous and has a cell content of substantially CO2 inflating agent and proportions of a physical inflating agent being at least substantiall...

PCT No. PCT/FR89/00559 Sec. 371 Date Apr. 29, 1991 Sec. 102(e) Date Apr. 29, 1991 PCT Filed Oct. 26, 1989 PCT Pub. No. WO90/04547 PCT Pub. Date May 3, 1990.A package for a liquid which is purified includes a neck with a lock-chamber slidable therein. The lock-chamber includes a purifying substance through which the liquid passes when dispensed. At one end of the lock chamber, a plug is positioned ...

A bag or sack made from two layers of flexible thermoplastic film with welded borders is provided with a pouring spout having a forked root with wedge-shaped branches onto which the opposing layers of film can be sealed. A passage through the junction of the root allows material to pass from the bag to the spout, or vice versa. Pref. the spout with its integral root is made of a thermoplastic mate...

For the production of a monoaxially stretched shaped article of polytetrafluoroethylene (PTFE), a pasty composition containing PTFE powder is worked continuously into a moulding, which is passed over a plurality of rollers or rolls, is heated and stretched, the moulding being heated before applying the stretching tension to a temperature of between 327 and 450 DEG C, preferably between 350 and 390...

The invention relates to pourable, fine-particle dry powders based on a water-soluble and/or water-distendable combination of non-ionogenic cellulose ethers and dried redispersion polymers mixed, if desired, with other additives with and/or without adhesive force. The new dry powders are characterized by a particle structure with the closed nuclei of the non-ionogenic cellulose ethers surrounded b...

A process for forming diamond coatings is disclosed, in which a gas or a mixture of gases is passed through a low temperature silent discharge to generate a low temperature non-equilibrium plasma gas stream, the plasma gas stream is adiabatically expanded into a region of lover pressure to ford a plasma gas stream of highly ionized and dissociated gases, a carbon-containing gas is injected into th...

Fire-retardant expandable vinyl aromatic polymer beads are prepared by an aqueous suspension method whereby micronized hexabromocyclododecane and a volatile aliphatic hydrocarbon foaming agent are incorporated into particles of a thermoplastic such as polystyrene. The beads are useful in the preparation of molded foam articles having excellent resistance to flame.

Removal of As and other metals from waste water currents, opt. in presence of H2SO4, in soln. in varying ratios, involves (a) treating the water with H2S under pressure in countercurrent, in 1 or more stages, giving a soln. with pptd. sulphides, and a soln. contg. gas, comprising, among others, unreacted H2S, (b) filtering to remove the ppte. and give a clear soln., and (c) de-gassing the clear so...

A rubber mixture is proposed which forms a durable bond to copper alloys on vulcanisation. According to the invention, at least one monosaccharide from the group comprising the ketoses is admixed, as adhesion additive, with the rubber mixture. This adhesion additive is particularly toxicologically acceptable and can be mixed and processed without problems. The resultant vulcanisates have very good...

A storage-stable container sealing composition which is fluid and comprises an aqueous dispersion of a visco elastic, generally elastomeric, polymer and hollow microspheres of a thermoplastic polymeric material containing a liquid blowing agent. The compositions are applied as gaskets to container closures and are heated to volatilize the blowing agent and expand the microspheres.

Electronic terminal for banking operations, especially payments, made with the aid of payment cards, cheques or the like, including a teletext or Minitel terminal 2; peripheral equipment 3 (ticket printer, card reader, encrypter, etc.) connected to a computer peripheral circuit 6 of the teletext terminal for data exchange between the teletext terminal and the peripheral equipment; at least one ada...

The invention relates to a method for assisting the directing of means ET for carrying loads of ore of different categories to unloading points PD corresponding to these categories. According to the invention, for each carriage means and for each trip the following steps are carried out, namely: - the ore is loaded onto the carriage means; - this ore is sorted ST; - in response to this sorti...

Fire-retardant expandable vinyl aromatic polymer beads are prepared by an aqueous suspension method whereby micronized hexabromocyclododecane and a volatile aliphatic hydrocarbon foaming agent are incorporated into particles of a thermoplastic such as polystyrene. The beads are useful in the preparation of molded foam articles having excellent resistance to flame.

A method is presented for obtaining borehole measurements using measurement-while-drilling apparatus wherein mud pulse telemetry signals are decoded from the annulus pressure signals at 60. The data bearing signals are enhanced by combining the annulus pressure signals and standpipe pressure signals sensed at 46 using addition, multiplication or correlation techniques.

- 11 - O.Z. 0050/40907 Bead-form expandable styrene polymers are obtained by suspension polymerization of styrene with addition of from 1 to 10 % by weight of C3to C6-hydrocarbons as blowing agents and, if desired, customary additives, where a) the polymerization is initiated by rapidly heating the polymerization batch to from 80 to 90.degree.C within a maximum of 2 hours, b) subsequently allowing...

O.Z. 0050/40908 Bead-form expandable styrene polymers containing a styrene polymer having a mean molecular weight (weight average) of less than 130.103 and a steep high-molecular-weight flank of the molecular-weight distribution curve, and 0.15 to 1.5 mol of a C3- to C6hydrocarbon as blowing agent, and, if desired, customary additives in effective amounts, are distinguished by a particularly high ...

At least one layer of a mono- or multilayered, bioriented film contains as film-forming polymers (A) from 75 to 100 percent of a linear ethylene/alpha-olefin copolymer having a density of from 0.890 g/cm<3> to 0.930 g/cm<3> and (B) from 25 to 0 percent of a high density linear polyethylene having a density of from 0.935 g/cm<3> to 0.960 g/cm<3>. All percentages are based on the total weight of (A)...

Différentiel autobloquant dans lequel deux roues d'arbre d'essieu 3 avec denture périphérique sont maintenues coaxialement dans une coquille de différentiel 1, et dans lequel un premier groupe de roues satellites 4 est en prise avec l'une des deux roues d'arbre d'essieu 3 et un deuxième groupe de roues satellites 5 est en prise avec l'autre des deux arbres d'essieu, et des roues 4, 5 des deux g...

Containers, in particular bags for limited liquid, oil, cream doses, etc., that can be easily opened and reclosed even after various drawings, and that can be difficultly submitted to violations, including a container body formed by thermosealable, substantially flexible composite film (laminated or coextruded film), characterized by a substantially rigid insert (IN), welded to a head part (TE) of...