A flotation machine for de-inking waste paper stock comprises a horizontally extending flotation cell (5) defining a reservoir for a stock liquid which forms a free liquid surface in the cell. A froth receptacle (4) extends along the entire length of the cell and receives froth floating up to the liquid surface. At opposite ends of the cell are a stock inlet (1) and a stock outlet (2). Situated wi...

Oriented polyester film primer coated with a hydrolyzed aminosilane IS disclosed. The aminosilanes in the unhydrolyzed state have the formula: (R<1>)aSi(R<2>)b(R<3>)c wherein R<1> is a functional group with at least one primary amino group; R<2> is a hydrolyzeable group such as a lower alkoxy group, an acetoxy group, or a halide; and R<3> is a nonreactive, nonhydrolyzeable group such as a lower a...

PCT No. PCT/EP97/01060 Sec. 371 Date Sep. 11, 1998 Sec. 102(e) Date Sep. 11, 1998 PCT Filed Mar. 3, 1997 PCT Pub. No. WO97/34946 PCT Pub. Date Sep. 25, 1997A process for preparing polyurethane rigid foams from polyols and polyisocyanates as well as blowing agents and optionally foam auxiliary agents, characterized in that the polyurethane rigid foam is obtained by reacting A) a polyol component wi...

The invention concerns an amorphous plate which is between 1 and 20 mm thick and is characterized in that its main component is at least one polyalkylene naphthalate. The invention further concerns a process for producing this plate.

A laser light irradiation apparatus used in medical treatment while the laser light emitting surface of the apparatus is brought into contact with the living tissues. This apparatus comprises an optical fiber (10) and a holder (20) which has rigitidy higher than that of the optical fiber (10) and which surrounds the optical fiber (10) integrally. With respect to the direction extending from the ou...

Methods and apparatus are described for identifying and removing noise from borehole telemetry signals. A spectrum of the signal and of an approximated noise-free spectrum of the signals are generated and compared so as to identify frequencies at which noise occurs. The approximated spectrum is preferably generated by an averaging or integrating process which essentially results in a smoothened va...

A method for making a cellular rubber is described, in which water is added to a high water absorption resin, followed by allowing the resulting mixture to stand and form a hydrous gel. The hydrous gel, with or without a foaming agent, is added to a rubber compound and subjected to foaming under conditions sufficient for vulcanization thereby obtaining a cellular rubber having a closed cell struct...

Decontamination of soil and waste contg. iron oxides fixing heavy metals comprises: (a) contacting, in a reactor, waste and a source of assimilable carbon under anaerobic conditions for a time sufficient to solubilise the iron oxides by the action of ferri-reducing microorganisms, and as a result, solubilising the heavy metals; (b) retaining in the reactor a soln. contg. the solubilised iron and t...

Connections to and from the circuit board (2) serving switches, potentiometers and other controls (10) are taken through a plug moulding (3) which protrudes through an opening (9) in the housing (1). The board is introduced into guides (7) set into the sidewalls and is held in by two resilient tongues (4) formed integrally on the wall of the housing in which the opening is made.The tongues lie at ...

A processable poly(hydroxy acid) composition which has been stabilized by adding to the polymer during the melt processing stage 0.05-3% by weight of a peroxy compound the degradation of which produces one or more acid radicals, and which has good melt strength and elasticity. The melt strength is high enough to produce films with conventional methods as the film blowing method.

Polymeric film of water-vapour-permeable thermoplastic elastomer type and the process for its manufacture. The film in accordance with the invention is based on polyetheresteramide and preferably on block polyetheramide. The invention also relates to articles comprising such a film and capable in particular of coming into contact with the human body.

PCT No. PCT/NO90/00177 Sec. 371 Date Jun. 8, 1992 Sec. 102(e) Date Jun. 8, 1992 PCT Filed Nov. 29, 1990 PCT Pub. No. WO91/09076 PCT Pub. Date Jun. 27, 1991.A method for production of a crosslinked, foamed vinyl chloride containing polymer, by adding a blowing agent to a copolymer produced by a copolymerisation of a monomer composition comprising vinyl chloride and glycidyl containing monomer, and ...

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 personalized coupon generating and processing system (10) includes a coupon dispensing source (12) that communicates with responsive consumers (16) through a communications interface (14). The availability of preselected coupons is communicated to the consumers by an availability communications means (20), and consumer responses are communicated to the coupon dispensing source by consumer respon...

Elongate lyocell members such as fibres of low fibrillation tendency can be manufactured by a method wherein a solution of cellulose in an aqueous tertiary amine N-oxide solvent is extruded through a die by way of a gaseous gap into an aqueous coagulating bath to form an elongate member which is thereafter washed and dried, the method having good spinning stability and being characterised in that ...

A digital integrated touchpanel browsing system. The system includes a microcontroller assembly, a touch-sensitive panel that cooperates with a plurality of images depicted on a graphic overlay, a digital information retrieval assembly, and storage media for presenting to the user information that has been stored as a preselected file of digital data. The components of the system are located withi...

A photoactivatable reagent useful as a chain transfer reagent for providing a semitelechelic polymer having one or more terminal photoactivatable groups. The reagent provides one or more photoactivatable groups and one or more sulfhydryl (or other chain transfer) groups, the photoactivatable and chain transfer groups optionally being joined together by a spacer group. The reagent can be used to pr...