Abstract: This invention concerns a process for modifying polymer surfaces by contacting the surface with a selected organic modifying agent while irradiating the surface with ultraviolet and/or visible light that can be absorbed by the modifier. Patterns of modified and unmodified surfaces can be produced. Polymers with modified surfaces are useful for absorbing biologically active molecules, composites, printing plates and electronics.

Abstract: A grounding ferrule is characterized by a generally cylindrical hollow member having at least three equiangularly circumferentially spaced axially extending slots which cooperate to define a plurality of circumferentially adjacent webs. Each web has a plurality of radially inwardly extending protrusions provided on the inner surface thereof. The ferrule responds to a radially inwardly directed crimping force applied circumferentially to the exterior surface of the webs by deflecting radially inwardly to define a constricted central region.

Abstract: An improved process for preparing 1,1-dichloro-1-fluoroethane by hydrogen fluoride addition, in the vapor phase, to 1,1-dichloroethylene in the presence of an aluminum fluoride catalyst.

Abstract: A self-contained theft and vandalism deterrent system for equipment security includes sensors (12) for detecting conditions to which an alarm (24, 26, 28, 50) is responsive. The analog signals from the sensors (12) are serially delivered by a multiplexer circuit (16) when they are then directed to a network (20) for conversion to digital signals. The digital signals are delivered to a micro processor (22) where the signals are evaluated to determine if an alarm condition exists. The sensing means (12) include sound and vibration detectors for monitoring the ambient envelope. The micro processor (22) includes built in reprogramming and comparator circuits for varying the level at which a given condition will trigger an alarm response.

Abstract: Apparatus and method for producing a novel drawn film by propelling individual carriages along opposed loops from a first speed abutted in stacks in carriage collection sections to a second speed space apart in a drawing section of a tenter frame and to a third speed in stack forming sections where the carriages return to the first speed in the stacks. First primaries positioned adjacent one part of each loop develop electromagnetic waves for engaging synchronous secondaries attached to active carriages to provide controlled spacing of such carriages, and second primaries adjacent another part of the loop develop other electromagnetic waves for engaging hysteresis secondaries attached to active and to passive carriages to provide controlled abutting of the carriages.

Abstract: An improved waterbased coating composition containing about 10-50% by weight of film forming binder and pigment in a pigment to binder weight ratio of about 1/100 to 200/100 dispersed in an aqueous carrier and having a pH of about 7-10; wherein the improvement used in the composition is a acrylourethane pigment dispersing polymer in an amount of about 0.5-10% by weight, based on the weight of the coating composition; the acrylourethane pigment dispersing polymer is composed ofhydroxyl and carboxyl functional acrylic polyol having a hydroxyl no. of about 50-170 and an acid no. of about 30-120 and chain extended with an aliphatic, cycloaliphatic or aromatic diisocyanate in the presence of a monohydric alcohol and the polymer has a weight average molecular weight of about 10,000-40,000 and the carboxyl groups are neutralized with ammonia or an amine.

Abstract: The apparatus includes a body (222) that fits within the bore of a collet (228). An expandable sleeve (223) slides over the body (222). The body (222) includes a flange (240) on one end. A nut (224) is threaded over the other end of the body, with the sleeve (223) disposed between the flange (240) and the nut (224). As the nut is threaded toward the flange (240), the sleeve (223) is wedged between the flange (240) and nut (224), and forced to expand against the collet (228), thereby to fix the position of the stop apparatus body (222) relative to the collet (228). A rod (226) is slidable within the stop apparatus body (222) and may be locked in position relative to the body (222) for providing a stop face (235) for limiting penetration of a work piece (241) that is held by the collet (228).

Abstract: A process and apparatus for sampling a stream of gas-entrained particulate matter are provided. A sampling tube is employed which has an inlet exposed to the gas-entrained stream and extending to an outlet in a sample receiver. Pressurized gas is introduced into the sampling tube between the inlet and the outlet and is directed toward the sample receiver so that gas acts to decrease the gas pressure present at the inlet of the sampling tube to substantially continuously draw the particulate matter into the tube and deposit it in the sample receiver. So that a sample of a desired size can be collected over a given time period, the rate at which the particulate matter is drawn into the sampling tube is adjusted. The sample receiver provides for venting gas while retaining the sampled particulate matter.

Abstract: An improved process is disclosed for the manufacture of 1,1,1,2-tetrafluoroethane, more particularly, a gas-phase reaction of 1,1,1-trifluorochloroethane with hydrogen fluoride in the presence of a catalyst, a selected metal on aluminum fluoride, and molecular oxygen which process minimizes the oxidation of liberated hydrogen chloride to chlorine and water, extends catalyst life and improves yield.

Abstract: An improved vapor degrease characterized by a deep freeboard zone (i.e., freeboard to width ratio of 1.0 to 2.3) containing a three-stage condenser/heat exchanger configuration comprising: a water-cooled lower primary exchanger operating above 32.degree. F. to effect condensation of the bulk of the vapor generated by the boiling sump and a combination of an intermediate exchanger above, but preferably overlapping, the primary exchanger and a dehumidifying third exchanger position just below the top lip of the degreaser, both operating at a temperature below 32.degree.F. (preferably +10.degree. to -30.degree.F.) to effect a reduction in the vapor concentration gradient that controls the rate of vapor diffusion through the freeboard zone. The improved vapor degreaser is particularly useful in reducing vapor losses when using low boiling solvents.

Abstract: A photosensitive aqueous developable photosensitive silver conductive composition is disclosed which is fireable in a nonoxidizing atmosphere and is developable in an aqueous solution containing 0.8 percent by weight sodium carbonate.

Abstract: Antihypercholesterolemic activity is exhibited by novel compounds of the formula ##STR1## wherein: Z is ##STR2## X is lower alkyl or lower alenyl; R.sup.1 is aryl or alkyl;R.sup.2 and R.sup.3 are the same or different and are hydrogen, or lower alkyl or aryl, or R.sup.2 and R.sup.3 taken together to form a cycloalkyl group; andR.sup.4 is hydrogen, lower alkyl, or alkali metal (such as sodium, lithium, or potassium) or a radical such as ammonium.Methods of use and novel intermediates of these compounds are also provided.

Abstract: A process for extruding a smooth and uniform film or sheet of an ordered poly(ether ketone ketone) having a thickness of about 2.5 to 250 micrometers, wherein the molten extrudate is quenched on a drum maintained at a temperature of about 100.degree.-170.degree. C.

Abstract: A copolyester of long chain and short chain ester units, said long chain ester units being represented by the structure: ##STR1## and said short chain ester units being represented by the structure: ##STR2## wherein G is a divalent radical remaining after removal of terminal hydroxyl groups from a poly(alkylene oxide) glycol;R is a divalent radical remaining after the removal of carboxyl groups from a dicarboxylic acid; andD is a divalent radical remaining after removal of hydroxyl groups from a low molecular weight diol;with the proviso that the short chain ester units constitute about 25-65% by weight of the copolyester, at least about 75% of the R groups are 1,3-phenylene radicals, at least about 75% of the D groups are 1,4-butylene radicals, and the sum of the percentages of the R groups which are not 1,3-phenylene radicals and the D groups which are not 1,4-butylene radicals cannot exceed about 25%; said copolyester being further characterized by a melt index at 120.degree. C.

Abstract: The invention provides high impact resistant heat formable composites comprising an addition polymer or copolymer, a metal oxide or metal carbonate filler and oriented thermoplastic elastomeric fibers.

Abstract: Improved non-stick coating systems can be applied to untreated smooth substrate with a polyether sulfone undercoat 0.1-5.0 microns thick preferably containing colloidal silica and surfactant.

Abstract: A method for producing an attapulgite clay which retains its thixotropic properties, but does not release gases upon being compounded and cured in organic binder systems, such as plastisol, and the resultant low moisture thixotrope. The method involves (1) reducing the moisture content of the attapulgite by heating it under vacuum at an elevated temperature, preferably between 100.degree. C. and 300.degree. C., or (2) reducing the moisture content of the attapulgite by heating it at an elevated temperature, preferably between 100.degree. C. and 350.degree. C., and adding a silicone fluid, to preserve its thixotropic properties.

Abstract: A method of controlling with a computer the blending of solids from a plurality of sources. The sources of solids, having at least one common physical property, are selected in succession pairwise to achieve a predetermined goal value of the common physical property for the solids blend.

Abstract: A low temperature cure electrodepositable cathodic resin is disclosed. The resin is the reaction product of a polyepoxide amine adduct and a novel blocked crosslinking agent. The crosslinking agent of our invention is tetramethylxylene diisocyanate blocked with any suitable blocking agent. The resulting resin can be cured at relatively low temperatures (250.degree.-275.degree. F.), which potentially allows the use of the resin with articles containing plastics.