Abstract: Polymer films are formed by electrocodeposition of solutions containing a dispersion of charged particles of a first polymer and charged particles of a second polymer. Microheterogeneous films are obtained having micro-domains of a minor component polymer dispersed in the major component polymer. Processes for preparing dispersions for electrocodeposition are also provided In a first process, two polymers are dissolved in a common solvent and then dispersed as small charged particles in another solvent which is a precipitant for both polymers. In another process, a dispersion of a first polymer is prepared by adding a solution of the first polymer to a dispersant solvent, and then a solution of a second polymer is dispersed in the dispersion of the first polymer. In another process, a solution of the second polymer is added to a dispersion of the first polymer which contains only a single non-solvent for the second polymer.

Abstract: A cylinder press converted to printing foil embossed images onto a printing stock. A supply roll of foil bearing ribbon is mounted forward on the reciprocating chase and the ribbon is extended over the chase through a pair of adjusting guide rollers to a stationary take-up mechanism. In the take-up mechanism, the ribbon is wrapped around a puller roller and onto a rewind roller. One of the guide rollers is stationary and the other reciprocates in a parallel path in at least half the speed of the reciprocating chase. The ribbon is wound in a serpentine configuration around the reciprocating guide roller forward to the stationary guide roller and back to the take-up mechanism to thereby retain a fixed pathway length regardless of the position of the chase. The ribbon is wrapped around the puller roller having a friction gripping surface for non-slip pulling of the ribbon.

Abstract: The removal of water vapor from a gas/vapor mixture by means of vapor permeation takes place by passing the mixture to be separated along one side of a membrane and the permeation of water vapor through the membrane is achieved by maintaining a relatively low partial pressure of water vapor on the other side of the membrane. To increase the flux the membrane is impregnated beforehand with a hygroscopic electrolyte.

Abstract: A sampler including a hood having a valve mounted at one end and a reciprocally related sleeve slidably mounted in the hood. a sample bottle having a septum is held in a bottle retainer that is slidably mounted on the hood. A pair of needles extend from the hood and communicate with a pair of bores that extend through the hood. One bore is vented to the exterior while the other bore communicates with channels in the valve. The needles may be sterilized, in a simple manner, prior to and/or after sampling. In a special embodiment of the sampler it is possible to sterilize the needles after sampling and before the needles contact the ambient air.

Abstract: The problem encountered with filling sample bottles with the aid of a known device, that dangerous liquids can only be manipulated by using a branch line to a closed casing, has according to the invention be solved by placing an injection needle within a cap which is fixedly connected to the process portion and has an internal surface which corresponds with the external surface of the sample bottle, which cap preferably also has a slot so that a worker can see to which extent the bottle is filled.

Abstract: A disk file having on one side of a disk a servo track and a plurality of data tracks all equally spaced on centers and a carriage translatable across the disk and having an array of read/write heads some of which are spaced on centers for the distance equal to the spacing between adjacent ones of said tracks and others of which are spaced on centers for multiples of the distance between adjacent ones of said tracks, the spacing between heads being such that when said heads are successively in alignment with said servo track the others of said heads are aligned with said data tracks.