Novel improved polymer/polyisocyanate composition made by polymerizing acrylonitrile alone or with one or more ethylenically unsaturated monomers in situ in a polyisocyanate. The polyisocyanate comprises a diarylalkylene diisocyanate; a polymeric diarylalkylene polyisocyanate; a quasi-prepolymer of a diarylalkylene diisocyanate or a polymeric diarylalkylene diisocyanate with an active hydrogen org...

The present invention relates to one component polyurethane foam compositions which comprise mixtures of prepolymers of a polyol and an excess of isocyanate; the usual adjuvants for polyurethane foams, an expanding gas under pressure and a polysiloxane compound with antifoam activity stored in a valved pressure vessel.

An interlayer film for a laminated glass, which comprises polyvinyl butyral and a plasticizer and has a T peel strength at 20 DEG C. of not more than 0.5 kg/cm, said polyvinyl butyral satisfying the following expression Y>/=-3X+486 wherein X is the degree of butyralization in mole % and Y is the half-value width in cm-1 of hydroxyl absorption in the infrared absorption spectrum of the polyvinyl b...

The invention provides for a process for inducing immediate high slip properties in a silicone modified, unorientated polyester. The process comprises heating the polyester film, article, etc., in a fluid at a temperature of from about 70 DEG C. to about 200 DEG C.

A tire assembly means employing a conveyor (12) which is used to transport a plurality of tire building drums (14) to a plurality of applicator stations (11) wherein various components are applied to the tire building drums (14) at the various applicator stations (11) in order to fabricate a tire when the tire building drums have made a complete traversal of the conveyor (12), wherein the tire bui...

Polymer pellets with improved extrusion characteristics are prepd. by (a) providing a high mol. wt. polymer or copolymer of propylene or butylene (b) mixing the polymer with a free radical generating prodegradant (I) which has a half life in the polymer of at least Ca 0.5 mins at temps. that allow extrusion of pellets; (c) pellectizing the polymer under conditions such that more than 50% of (I) ad...

By a special structure the conductor paths between connection prongs at one end of an electric circuit unit and circuit components located on two circuit boards are greatly shortened. The circuit boards are connected at their ends remote from the connector prongs by studs that releasably snap together while a flexible flat conductor makes connections between the two circuit boards. The two circuit...

The invention relates to a control unit, which is used for control of the electrons, particularly in a display device, between a gas-discharge cavity and a post-acceleration cavity, and which consists of at least two thin glass plates (1), which are combined into a stack and have a hole grid which corresponds to the grid of the electron control elements applied in the form of a matrix on at least ...

Mercury is removed from an industrial effluent by treating the effluent with a sulphide or hydrosulphite of an alkali metal in the presence of a flocculant at a pH of from 7 to 12 so as to precipitate an alkaline sludge containing precipitated mercuric sulphide and flocculated material, treating the alkaline sludge with effluent to redissolve the flocculated material but not the mercuric sulphide,...

A fibre-reinforced plastics (FRP) material comprises a woven fabric, preferably several plies of woven fabric, embedded in a monomer-cast nylon thermoplastic polymer. The FRP is produced by impregnating the fabric with a molten nylon monomer or monomer mixture that polymerises in situ. The low viscosity of the molten monomer or monomer mixture facilitates impregnation of the fabric plies to the ex...

A process for the production of a mixture of a polymer and a fibrous material, which comprises agitating an aqueous solution of a coagulant for the polymer; adding an aqueous suspension of the fibrous material to the coagulant solution; adding the polymer, in aqueous latex form, to the coagulant solution; co-coagulating the polymer and the fibrous material; and recovering and drying the mixture of...

A plasticized polyacrylonitrile composition and a film thereof containing a plasticizing proportion of a liquid polyether prepared by reacting ethylene oxide and propylene oxide with at least one monohydric alcohol active hydrogen compound initiator having about one to about ten aliphatic carbon atoms to yield a heterized copolymer. The invention is also concerned with a continuous process for the...

A caliper logging sonde is equipped with a plurality of fingers (54) mounted swivelably with respect to its body member (51). The movement of each finger (54) is transmitted to a respective bar (176) in magnetic material. This bar moves within a longitudinal tube (136) which is mounted in a sealed manner with respect to the sonde body member so that its interior is subjected to the pressure outsid...

1. A double acting thrust collar for a toothed gear unit with a simple helicoidal gear transmission, of the type comprising a pinion (40) meshing with a toothed wheel (46), the axis XX of said pinion and the axis YY of said wheel being parallel, said collar (43) being press-fitted to the pinion at the median level of the teeth, and penetrating into a groove (45) provided in the median zone of the ...

A process for the preparation of a particulate gel, which process comprises (i) contacting the gel with a swelling agent and (ii) subjecting the swollen gel to shear stress such that the swollen gel is comminuted to particles.

A video recorder-playback machine is provided for recording and or playing back video information from an information disc. The machine includes a <> laser (16) and a <> laser (80) respectively for generating record and playback optical beams (11, 81) which are focused upon the disc by an optical record-playback head (34). An optics carriage (30) movably positions the head with respec...

A video recorder-playback machine is provided for recording and or playing back video information from an information disc. The machine includes a <> laser (16) and a <> laser (80) respectively for generating record and playback optical beams (11, 81) which are focused upon the disc by an optical record-playback head (34). An optics carriage (30) movably positions the head with respec...

A protective coating composition containing a polycaprolactone polyol and an aminoplast derivative is applied to a thermoplastic substrate to produce a thermoformable article having abrasion resistance, solvent resistance and weatherability.

A process for the treatment of a soft contact lens, to increase its resistance to the deposition thereon and diffusion and accumulation therein of substances which will promote its clouding and discoloration in use, and to improve its mechanical strength, includes treating a hydroxyl group-containing acrylic ester soft contact lens or replica with an organic acid anhydride for a sufficient period ...