A toroidal elecrical transformer having a low voltage coil, a high voltage coil and an annular magnetic core is disclosed. The preferred low voltage and high voltage coils are each continuous and form an arcuate elongated passage therethrough. The preferred annular magnetic core is wound in place in said arcuate elongated passage substantially from a continuous strip of magnetic material resulting...

PCT No. PCT/GB81/00187 Sec. 371 Date May 6, 1982 Sec. 102(e) Date May 6, 1982 PCT Filed Sep. 11, 1981 PCT Pub. No. WO82/00998 PCT Pub. Date Apr. 1, 1982.A method of processing waste material comprises treating the material with flue dust and bonding it to form a solid mass with cement powder, e.g. Portland cement. Acidic liquors containing heavy metals can be processed. Suitable flue dust is obtai...

The combination of adhesion and rheology properties of aqueous adhesives the adhesive component of which is a water soluble or water swellable polymeric material can be improved by copolymerizing the monomers from which the polymeric material is obtained with an ethylenically unsaturated monomer that includes a pendant group -AmBnApR where B is ethoxy, n is at least 2, A is propoxy or butoxy, m an...

Disclosed is a composition comprising about 5 to about 95 phr of a polyepoxide or other resinous component, about 20 to about 90% of an aprotic solvent, about 5 to about 95 phr of a polyimide having sufficient amic acid functionality to be soluble in the solvent, and sufficient water to hydrolyze the polyimide. A laminate is made from the composition by heating it until the amic acid functionality...

Porous particles of crosslinked PVC are disclosed. The particles are skinless and have a fast powder mix time. Processes to produce the novel particles are also disclosed.

A new polyimide film which contains 30 to 800 ppm of titanium based on the weight of the film, and a process for producing a new polyimide film which comprises introducing an organic titanium compound substance into the film-forming polyimide resin prior to the casting step. This process enables one to control the film surface forming process and improve directly the adhesive properties of the fil...

Melt-processible tetrafluoroethylene/perfluoroolefin copolymer granules, and process for their preparation, are disclosed having improved thermal stability, high purity and reduced bubble tendency.

Powdered, cured silicone rubber in the form of microfine particles is prepared by emulsifying a curable liquid silicone rubber composition in a mixture of water and a surfactant at a temperature of from 0 to 25 degrees C., dispersing the curable composition in water heated to a temperature of at least 25 degrees C. and recovering the resultant cured particles. The liquid silicone rubber compositio...

A cured silicone rubber is produced by heating at a temperature of at least 150 degrees C. under a pressure of at least 9.8 kilopascals gauge pressure a silicone rubber composition comprising an alkenyl-containing organopolysiloxane, an organohydrogenpolysiloxane and finely divided silica in the absence of a hydrosilation catalyst or organoperoxide.

An improved process for preparing polyimides is disclosed which involves end capping intermediate polyamic acids with dicarboxylic acid monoanhydrides and thermally converting to high molecular weight polyimides.

Laser imaging system and method for imaging a plurality of printed pages on an output medium in positions and orientations corresponding to an imposition format. Different areas of the medium are scanned to form the images for different pages with the beam traveling and being modulated to provide the proper orientation and position for each page.

OF THE DICLOSURE EPOXY RESIN COMPOSITIONS A hardenable epoxy resin comprising a curable epoxy resin, a hardener for the epoxy resin and a polymer of epihslohydrin which composition is characterised in that the amount of the polymer of epihalohydrin in the composition is from 1 to 6 parts per one hundred parts by weight of the epoxy resin and in that the composition also comprises from 2 to 25 part...

A two component additive and a liquid hydrocarbon based fuel composition, containing the additive. The fuel composition is comprised of a major amount of a liquid hydrocarbon diesel fuel and a minor fuel efficiency improving amount of the additive. The additive is composed of: (A) an overbased transition metal salt of a carboxylic acid; and (B) a compound represented by general formula (II), where...

A single-component, visible light-curable liquid adhesive composition having a viscosity of less than 25 centipoise at 25 DEG C which comprises (a) 2 to 20 parts by weight of at least one substantially pure phosphate ester having the formula CH2=C(R<1>).CO.O.R<2>.OP(O)(OH)<2> in which R<1> is a hydrogen atom or a methyl group, and R<2> is -CH2-CH2-, -CH2-CH(CH3)- or -CH(CH3)-CH2- and (b) 98 to ...

In order to mount a body on a base by way of a synthetic resin member, a structure is useful in tightening and fixing the synthetic resin member on the body by means of a screw which can be tightened only to a limited degree, so as to avoid its tightening to the screw head thereof. A planar portion with a screw insertion hole formed therethrough is provided at the screwed part of the synthetic res...

HYDRAULIC MINING METHOD A method of hydraulically mining an underground pitched mineral vein comprising drilling a vertical borehole through the earth's lithosphere into the vein and drilling a slant borehole along the footwall of the vein to intersect the vertical borehole. Material is removed form the mineral vein by directing a high pressure water jet thereagainst. The resulting slurry of miner...

1. A process for the production of mouldings, especially cushions, from at least two foams, especially polyurethane foams forming fluid reaction mixtures of different elasticity or hardness, wherein a first and at least a second reaction mixture are introduced into a mould cavity and are left to react out to form a moulding having zones (4, 5, 8) of different elasticity or hardness before the moul...

A side shift backhoe mounted on a sliding frame adapted for sliding transversely along upper and lower tracks of a main frame and in which the sliding frame and one of the tracks have matching chamfered surfaces and the sliding frame and other track have matching horizontal surfaces, and a power device extending between the sliding frame and main frame to effect movement of the sliding frame verti...

An integrated circuit having multiple programmable arrays in which a first programmable array receives a plurality of first inputs and generates a plurality of first outputs as programmed by the user. Also, a second programmable array receives a plurality of second inputs and generates a plurality of second outputs as programmed by the user. Also, buried state registers store signals as programmed...

A suspension of liposomes whose sizes are predominantly greater than about 1 micron is passed through an asymmetric ceramic filter whose inner-surface pore size is about 1 micron. The processed liposomes have a selected average size of about 0.4 microns or less, depending on the number of filter cycles, and a narrow distribution.