Abstract: A hydrosilation catalyst is provided having platinum atoms anchored onto a hydroxylated oxide of silicon or aluminum by Pt--S linkages through sulfur organo siloxy groups. A hydrosilation method and a method for making such platinum catalyst is also provided.

Abstract: Siloxane polymers containing zwitterions on tertiary silicone atoms and their aminoalkyl siloxane polymer intermediates are provided. Methods of their production are also provided. The aminoalkyl siloxane polymer intermediates and the zwitterionic siloxane polymers are obtained by co-polymerizing trifunctional aminoalkyl silanes or zwitterionic silanes, respectively, with hydroxy-terminated siloxane oligomers in the presence of an acid catalyst. The aminoalkyl siloxane polymer intermediates are converted to zwitterionic siloxane polymer by reaction with an organosultone or an organolactone. Trifunctional aminoalkyl silanes are readily available and utilizing these silanes provides an economical route to obtaining zwitterionic siloxane polymers.

Abstract: Zwitterionic siloxane polymers containing tertiary silicone atoms with zwitterions and their aminoalkyl siloxane polymer intermediates production are provided. Methods of their production are also provided. The aminoalkyl siloxane polymer intermediates and the zwitterionic siloxane polymers are obtained by co-polymerizing trifunctional aminoalkyl silanes or zwitterionic silanes, respectively, with hydroxy-terminated siloxane oligomers in the presence of an acid catalyst. The aminoalkyl siloxane polymer intermediates are converted to zwitterionic siloxane polymer by reaction with an organosultone or an organolactone. Trifunctional aminoalkyl silanes are readily available and utilizing these silanes provides an economical route to obtaining zwitterionic siloxane polymers.

Abstract: A hydrosilation catalyst is provided having platinum atoms anchored onto a hydroxylated oxide of silicon or aluminum by Pt-S linkages through sulfur organo siloxy groups. A hydrosilation method and a method for making such platinum catalyst is also provided.

Abstract: A method is provided for producing aminoalkyl-siloxane polymers of a high molecular weight by hydrolyzing a difunctional aminoalkyl-silane prior to incorporation into the siloxane polymer. The high molecular weight siloxane polymers obtained may be converted to zwitterionic siloxane rubbers with excellent engineering properties and integrity.

Abstract: A method is provided wherein ionically cross-linked zwitterionic siloxane polymers are solubilized by the addition of a weak base to a combination of the zwitterionic siloxane polymers and an organic solvent. Where a weak base having a high vapor pressure is utilized, the zwitterionic siloxane polymers can be recured by evaporation of the organic solvent and base.

Abstract: A method is provided for making cyclopolysiloxanes by hydrolyzing diorganodichlorosilanes and aqueous hydrochloric acid in the presence of an effective amount of a perfluorinated alkyl substituted organic material, such as a perfluorinated alkyl sulfonic acid salt.

Abstract: A mount is provided for securing a jack to the tongue of a trailer, and the like. The mount in one embodiment includes two separate brackets, each having a gusset-like configuration; the brackets being welded or bolted to the tongue in position such that the forward edges of a pair of upright sides of each of the brackets engages the jack in essentially diametrically opposite relationship to the jack. These edges are welded to the jack, and the resulting assembly provides a rugged, rigid, strong and simple mount for the jack. In a second embodiment the mount is formed of a single piece.

Abstract: Decamethyl cyclopentasiloxane can be prepared in good yields by treatment of octamethylcyclotetrasiloxane with aqueous hydrochloric acid and a normal C.sub.6-16 alkyl sulfonic acid.

Abstract: Cyclic methyl polysiloxanes can be prepared by hydrolysis of dimethyldichlorosilane and aqueous hydrochloric acid in the presence of a normal C.sub.6-16 alkyl sulfonic acid to give good yields of cyclic polysiloxanes and minimal amounts of linear silanols.

Abstract: A multiple layered laminated tape has an upper strength layer made of a film of pre-stretched polypropylene or the like which is laminated to a very weak lower carrier layer of relatively thin low internal bond Kraft paper. The carrier layer has a coating of a water soluble adhesive which is used to apply the tape to separable portions of a cardboard carton or the like. The carrier layer serves only as a medium to "carry" the water soluble adhesive and also to provide sufficient longitudinal rigidity to permit dispensing of the tape from a standard Kraft paper type tape dispensing machine. Stripping the tape from a carton pulls away the upper plastic layer and may split the Kraft carrier layer that has low internal bond, leaving only so thin a layer of Kraft on the carton that it can very easily be broken to permit opening of the carton.

Abstract: Ventilated cigarettes are made by perforating the wrapper of each filter over an area which lies within pre-formed perforations in the uniting band joining the filter to the tobacco rod. The filter wrappers may be perforated by pins on a rolling plate and fluted drum between which filter portions cut from longer filter rods are rolled to stagger the portions so that they can then be pushed into a single row.

Abstract: A device for testing filter cigarettes, comprises a drum or equivalent means for conveying cigarettes in succession through a test station at which each cigarette in turn is tested with the aid of a pressure chamber surrounding the wrapper of the cigarette, and a pressure detector connected to the filter end of the cigarette while the tobacco end of the cigarette is open to atmosphere, and including means for measuring the pressure in the pressure chamber and means for comparing that pressure with the pressure detected at the filter end of the cigarette. Preferably there is a second test station at which the pressure chamber extends over the tobacco end of the cigarette, and a second pressure detector is connected to the filter end of the cigarette.

Abstract: A device for staggering and aligning filter portions cut from multiple-length filter rods includes a first fluted drum which conveys the filter rods (already cut) to a second fluted drum with a rolling plate for rolling at least one portion of each filter rod into a staggered position with respect to another portion of the same rod, at least one stationary finger being arranged to hold adjacent filter portions out of the flutes until they have been rolled to their staggered positions at least some of the filter portions along the flutes of the second drum are then displaced to align all the filter portions.

Abstract: A microprocessor based instrument designed to retrofit into existing perimeters utilizing the mechanics and stimulus control aspects of the existing perimeter. The device includes an array board positioned adjacent the perimeter mechanical arm and includes a multiplicity of visual indicators spatially arranged in a composite pattern of testing locations required for one or more ophthalmic testing procedures. A processor is connected to the array board for sequentially actuating the visual indicators in accordance with the testing procedure whereby the operator guides a cursor attached to the perimeter mechanical arm to align with the actuated indicators and control the location of the perimeter test stimulus. The processor includes means for sensing the position of the cursor, silently presenting a light flash to the patient, and a memory which records the patient's responses.

Abstract: First and second electro-optical display devices for displaying visual acuity targets, one of which is adapted to be viewed by a patient and the other of which is adapted to be viewed by an examiner. An electronic memory is connected to the display devices containing a plurality of acuity targets stored in various orientations for presentation to the display devices. Controls are provided in an examiner's console for selecting one of a plurality of available target sizes, "zoom" increasing size or decreasing size, selecting a single or a line of multiple target characters, providing normal or reverse video presentation, changing the orientation of the target characters, and providing a blank screen. The size of the targets is varied by changing the dimensions of each of the targets about its own center and in the case of multiple targets, maintaining proportional spacing between the targets as the size of the targets vary.

Abstract: Suspended droplets of oil are separated from a waste water stream by the method and apparatus of the present invention. The oil and water mixture is injected into a partially submerged, vertical pipe. Gas bubbles injected into the lower end of the pipe, rise through the pipe and countercurrently contact the suspended oil droplets, thereby promoting the separation of the droplets from the waste water. The oil droplets coalesce and form a separate oil layer on top of the waste water which is readily withdrawn while clarified waste water is discharged from the lower end of the pipe. If employed to separate oil from a waste water stream on an offshore rig, the vertical pipe is submerged adjacent to the rig.

Abstract: A cigarette perforating device for filter cigarettes in which the cigarettes are rolled between a drum and a rolling plate carrying perforator pins. The rolling plate is mounted on a pivot arm which is held in the operative position by an adjustable permanent magnet latch so that when a predetermined increase in pressure occurs in the device, due to a jam, the rolling plate can move away from the drum. This action also operates a switch controlling an electromagnetic catch retaining a conveyor carrying cigarettes away from the perforator so that damaged cigarettes are then dropped to waste.

Abstract: Filter tipped cigarettes are produced by dividing a continuous tobacco stream into alternate sections having respective lengths corresponding to a double cigarette filler and a double filter portion. The double filter portion sections are removed from the stream to leave spaced double filler sections which proceed to a position where double filter portions are inserted in the gaps left by the removed sections. The stream of alternating tobacco sections and filter portions is continuously wrapped and subsequently cut at the middles of the tobacco sections and filter portions to produce individual filter cigarettes. The sections of tobacco removed from the continuous stream may be returned to the stream.