Abstract: A contact lens material which is lipophobic, easily machined and is oxygen permeable which comprises a copolymer comprising from 25% to 50% by weight of a polysiloxanylalkyl ester of acrylic or methacrylic acid, from 40% to 69% by weight of a fluorinated styrene, from 4% to 7% of a hydrophilic monomer, from 2% to 5% of a suitable cross-linking agent and from 0% to 2% of a UV absorber.

Abstract: A multifocal lens useful as a contact lens or implantable as an intraocular lens which comprises at least 3 zones, the first zone comprising a polymer of a specified refractive index, the second zone comprising a polymer having the same repeating units as the polymer comprising the first zone and having a specified refractive index differing from the refractive index of the polymer comprising the first zone by not more than 0.1 units and by not less than 0.01 units and the third zone between the first and second zones comprising a polymer having the same repeating units as the polymers comprising the first and second zones and having a refractive index continuously variable between that of the polymer comprising the first zone and that of the polymer comprising the second zone, the at least three zones being transparent and having no discontinuities visible to the human eye between the zones.

Abstract: A pharmaceutical product comprising a potassium channel activator antihypertensive agent and a .beta.-blocker antihypertensive agent as a combined preparation for simultaneous, separate or sequential use in therapy of hypertension.

Abstract: .beta.-Lactam antibiotics have the formula (Ia) or are pharmaceutically acceptable salts or pharmaceutically acceptable in vivo hydrolysable esters thereof: ##STR1## in which the group CO.sub.2 R.sup.1 is carboxy or a carboxylate anion. The use of the compounds and processes for their preparation are disclosed.

Abstract: An anti-caries composition has a source of hydrogen citrate ions, preferably an alkali metal hydrogen citrate salt, an oxalate salt and an orally acceptable excipient, and optionally further comprises an ionic fluorine-containing compound. The composition may be in the form of dentifrice when silica is the preferred abrasive, or a mouthwash.

Abstract: A catalyst comprising a Y zeolite of which silica/alumina molar ratio ranges from 15 to 110, use of this catalyst for alkylation of monoisopropylnaphthalene and a method for preparation of this catalyst comprising treating a Y zeolite with an acid(s) to adjust the silica/alumina molar ratio to 15 to 110 are disclosed. A method for preparation of mono and/or diisopropylnaphthalenes comprising reacting naphthalene and/or monoisopropylnaphthalene with propylene in the presence of at least one saturated polycarbocyclic compounds and a catalyst comprising a Y zeolite having the silica/alumina molar ratio of from 10 to 350 are disclosed. This catalyst makes possible the production of .beta.-monoisopropylnaphthalene in good yield by alkylation of naphthalene and the production of .beta.-monoisopropylnaphthalene and/or 2,6- and 2,7-diisopropylnaphthalenes in good yield by alkylation of naphthalene and/or monoisopropylnaphthalene in good percent conversion.

Abstract: A computer-controlled, uninterruptable power supply system is disclosed. The system selectively operates from more than one input source of power, e.g., an AC input, an external DC input and internal batteries. The system is of the type which utilizes one or more switch mode converters and is especially suited for use in computer systems. The system monitors a number of functions under computer control and reacts automatically to the monitored functions to follow a programmed course of action. During start up, the system monitors prescribed functions and prevents power turn-on upon detection of prescribed faults. The system may communicate with a host computer, provide data thereto, and receive down-loaded parameters therefrom. Such down-loaded parameters may be used by the system to control operation of the system.

Abstract: Skin friendly pressure sensitive adhesives in the form of inherently tacky polyurethane-containing gells may be prepared by reacting an isocyanate prepolymer, which is itself the reaction product of poly-functional isocyanate and polyoxyalkylene diol monoalkyl ether, with a hydroxyl-containing ester of acrylic or methacrylic acid and optionally other hydroxyl containing compounds and then cross-linking the polymer so formed by means of irradiation. The proportion of acrylate chosen is such that it will react with at least 15 to 25% of the free isocyanate groups in the prepolymer and the remainder react with the other hydroxyl containing compound. The adhesives are capable of absorbing up to 95%, typically from 35 to 95% by weight of water when hydrated. The use of the adhesive in highly moisture vapor permeable dressings is also disclosed.

Abstract: An oral hygiene composition comprising a silica base, from 1 to 10% by weight of the composition of a water solouble non-toxic strontium salt, a fluoride source providing from 250 ppm to 2000 ppm of fluoride in the composition, and a dentally acceptable carrier, provided that when the strontium salt is other than strontium acetate the silica base has a BET surface area of from 50 to 400 m.sup.2 /g.The composition has improved anti-sensitivity properties coupled with high levels of available fluorine.

Abstract: Compounds of the formula ##STR1## and pharmaceutically acceptable salts thereof, R.sup.1 is hydrogen, alkyl or aryl unsubstituted or substituted by one or two halo moieties, R.sup.3 is hydrogen or alkyl, A is N, W is O or NR.sup.3 wherein R.sup.3 is hydrogen, alkyl, acyl, haloacyl, 2alkoxycarbonyl or (5-methyl-2-oxo-1,3-dioxolen-4-yl) methyl are useful for treating bacterial infections in humans and animals.

Abstract: A repairing agent for cells and tissues is disclosed, which agent comprises, as an active ingredient, a compound of the general formula: ##STR1## wherein Z represents lithium, potassium, sodium, ammonium or an organic ammonium when n is 1, and Z represents calcium, barium or magnesium when n is 2.

Abstract: An adhesive dressing for use on moist wounds which comprises a pressure sensitive adhesive-coated wound contacting first layer in which there are present holes capable of transmitting liquid water and a moisture vapor permeable, continuous film. The continuous film is attached to the first layer in such a way as to form a reservoir into which water can pass through the holes in the first layer and can evaporate from the reservoir through the continuous film. The adhesive coated first layer has a moisture vapor permeability of less than 300 gm.sup.-2 24 hr.sup.-1 at 37.degree. C. and 100% to 10% relative humidity difference and the continuous film has a moisture vapor permeability which is greater when in contact with liquid water than when not in contact with liquid water. Optionally, an intermediate water transmitting layer may be present between the first layer and the continuous film.

Abstract: Quinolinecarboxylic acid derivatives of the formula (I) ##STR1## and pharmaceutically acceptable salts thereof wherein R.sup.1 is hydrogen, straight or branch chain lower alkyl or phenyl unsubstituted or substituted by one or more halo moieties; R.sup.2 is hydrogen or straight or branch chain lower alkyl; and ##STR2## is a 5- or 6-membered ring wherein the nitrogen atom is the only heteroatom or where there is a second heteroatom selected from the group consisting of nitrogen, oxygen and sulfur, said 5- or 6-membered ring being unsubstituted or substituted by lower alkyl, amino or mono- or di-lower alkyl amino are useful for treating bacterial infections in humans and animals.

Abstract: A system is disclosed for determining the position of at least one target by triangulation, comprising two passive sighting devices which measure the intensity of radiation received along a sighting line which scans a vertical sighting plane. They are disposed at a distance from each other along the same vertical axis and are driven in rotation about this common axis so that their sighting planes merge. A circuit extracts the angular coordinates of the target, relative to each of the sighting devices, and computes the distance of the target by triangulation in the vertical sighting plane.

Abstract: A bottom wiper seal for a moving glass, in particular in a car door, the wiper seal comprising a stub or clamp for fixing and mounting on the frame of the door and a first sealing lip carried by the stub and suitable for co-operating with the window glass. The wiper seal further comprises a second lip which is offset downwards relative to the first, and which is shaped and placed in such a manner as to come into contact with the window glass only when the glass is fully extended, in which case the second lip bears sufficiently against the glass for the lip to provide satisfactory sealing, with the first lip being covered on portions thereof liable to come into contact with the window by means of a relatively flexible covering of flock, whereas the second lip is coated on its operative portion with a sliding coating.

Abstract: A plurality of speakers and related audio system components are transported to and from an outdoor marine location by a packaging arrangement which includes a pair of weather-resistant carrying containers that are detachably secured. When secured together, the containers carrying their respective speakers are transported as an integrated cargo unit. When detached, each container carrying its respective speaker is independently transported as an individual cargo unit.

Abstract: A composite material comprising a para-oriented aramide fiber sheet and a thermosetting resin matrix. The composite material is characterized in that the reinforcing para-oiented aramide fiber sheet is pre-treated with a reactive siloxane oligomer prior to impregnation with the thermosetting resin. The reactive siloxane oligomer is represented by the following general formula (1) of: ##STR1## wherein Z is ##STR2## CH.sub.2 --O--, HS, NH.sub.2 -- or CH.sub.2 .dbd.CH--; m is an integer of from zero to 4; n is an integer of from 1 to 9; and R.sub.1 is the same or different groups selected from methyl, ethyl and phenyl.The composite material is improved in electric resistance properties, particularly after being dipped in boiling water, and also improved in thermal resistance to soldering.

Abstract: A polyamide binder for use in injection molding a metal powder comprising in combination: (a) 40 to 50 wt % of a polyamide resin component having an average molecular weight of not less than 20,000 and prepared by co-polycondensation of a mixture of dimer acid, azelaic acid, ethylenediamine and xylylenediamine each being mixed in a substantially equal molecular equivalent ratio; (b) 20 to 30 wt % of ethylene-bis-laurylamide; and (c) the balance of N,N-diacetylpiperazine.