Abstract: A floating dispenser having an external float or an internal float for supporting a cartridge or cartridges for floatingly delivering a dispersant or dispersants to a body of water with the floating dispenser having cartridges rotationally positionable with respect to one another to control the rate of dispensing while the dispenser floats in an upright condition with the floating dispenser changing its flotation orientation in response to consumption of the dispersant or dispersants in the cartridge or cartridges to thereby provide a visual alert to replace a spent cartridge with a fresh cartridge. In addition, the inventions described herein permit changing the dispensing nature of the system from a multiple dispensing system to a single dispensing system without changing the floating characteristics of the floating dispensers through replacement of a dispersant in one of the cartridges with an inert or ballast material that has no effect on the water characteristics.

Abstract: A passive distributed vibration absorber that utilizes multiple discrete mass elements and a viscoelastic layer and that effectively attenuates vibration in modally dense structures excited by a broadband input noise excitation. and is tunable to multiple natural frequencies in such modally dense vibrating structures including low frequencies.

Abstract: A passive distributed vibration absorber that utilizes multiple discrete mass elements and a viscoelastic layer and that effectively attenuates vibration in modally dense structures excited by a broadband input noise excitation and is tunable to multiple natural frequencies in such modally dense vibrating structures including low frequencies

Abstract: This invention relates generally to a drawbridge apparatus for reversibly spanning from a first base to a second base, and more particularly to a cantilever drawbridge with an initial vertical motion of the bridge deck then a sliding or horizontal-linear motion of the said bridge deck. The invention herein described effectively overcomes the problem of the adjacent first bridge approach obstructing the sliding movement of a sliding drawbridge. This is achieved by an initial vertical motion lifting the bridge deck until it effectively clears the first adjacent bridge approach thereby allowing the sliding the bridge deck to slide over said first adjacent bridge approach. A lifting mechanism and a sliding mechanism are included in the design to provide the apparatus the means to move the bridge deck vertically and horizontally.

Abstract: The present invention provides a composition comprising polycarbonate wherein the polycarbonate has a very low Fries content (e.g., above 5 ppm and below 360 ppm). The present invention also provides a polycarbonate having a very low Fries content which is made by the melt process. This polycarbonate has high ductility and high impact strength. The invention also provides a method for making these compositions. Another aspect of the invention is an optical disk comprising polycarbonate having a very low Fries content which is made by the melt process. Such optical disks resist breakage due to bending.

Abstract: There is provided herein an optical storage media which has low VBR. In a preferred embodiment, there is provided an optical disk comprising a genus of copolycarbonates, including copolyestercarbonates, which have excellent physical and optical properties. Said copolycarbonates have proportions of structural units which fall within a specific composition range, and said range defines certain materials, a large percentage of which can be molded into optical disks having the desired optical properties, including low VBR.

Abstract: Blow moldable polycarbonate is produced by first producing a polycarbonate preform by a melt transesterification process. The polycarbonate preform comprises 2.1 to 10 mole percent polyfunctional branching agent, based on the total moles of polycarbonate in the polycarbonate preform. The polycarbonate preform is then melt equilibrated with a second polycarbonate to produce a blow moldable grade.

Abstract: UV stabilized polycarbonates are provided having chemically combined polyhydric phenol benzotriazole carbonate units, such as 1,1-bis(4-hydroxyphenyl)-1-[4-hydroxy-3-(N-2-benzotriazole)phenyl]ethane carbonate units and methods for making. Incorporation of the polyhydric phenol benzotriazole functional units into the polycarbonate backbone can be achieved by redistribution or transesterification under melt polymerization conditions.

Abstract: Polyalkylated xanthenes are prepared by effecting reaction between an alkylated phenol such as m-cresol and an oxygenated organic material such as acetone in the presence of an acid catalyst such as methanesulfonic acid.

Abstract: Copolysiloxanecarbonates are prepared in the melt by the reaction of a diaryl carbonate such as diphenyl carbonate with a mixture of a dihydroxyaromatic compound and a carbonate-terminated polydiorganosiloxane, the latter typically prepared by reaction of a diaryl carbonate or aryl chloroformate with a hydroxyorgano-terminated polydiorganosiloxane. By this method, incorporation of silicone units in the copolysiloxanecarbonate is maximized.

Abstract: The present invention is directed to a method for effecting the redistribution of polycarbonate and polycarbonate blends utilizing a tetraorganophosphonium carboxylate salt.

Abstract: The present invention is directed to a method of making polycarbonates by the melt condensation of diarylcarbonate and dihydric phenol in the presence of a tetraorganophosphonium carboxylate salt, such as tetrabutylphosphonium acetate.

Abstract: Improved yields of aromatic organic carbonates made by the palladium catalyzed direct carbonylation of aromatic organic hydroxy compounds can be achieved if the total gas pressure and partial pressure of carbon monoxide and oxygen are substantially maintained during the reaction.

Abstract: The present invention discloses thermoplastic resins and methods for producing said resins utilizing a single component heterocyclic amine catalyst system. More particularly, the invention discloses resins such as high molecular weight polycarbonate resins that are produced by a solventless melt condensation reaction between diphenol carbonate (DPC) and bisphenol A (BPA) in the presence of a heterocyclic amine catalyst.

Abstract: The present invention discloses thermoplastic resins and methods for producing said resins utilizing a single component tertiary amine catalyst system. More particularly, the invention discloses resins such as high molecular weight polycarbonate resins that are produced by a solventless melt condensation reaction between diphenyl carbonate (DPC) and bisphenol A (BPA) in the presence of tertiary amine catalyst.

Abstract: Addition-curable platinum group metal catalyzed silicone compositions are provided which utilize a bis(trialkoxysilylalkyleneoxycarbonylalkylene)amine adhesion promoter, such as NH[CH.sub.2 CH.sub.2 C(O)OCH.sub.2 CH.sub.2 CH.sub.2 Si(OCH.sub.3).sub.3 ].sub.2. Cohesive bonding is effected on both plastic and metal substrates at temperatures of 100.degree. C. or less and in 1 hour or less.

Abstract: A method is provided for making aromatic polycarbonates by the melt condensation of a diaryl carbonate and an aromatic bis hydroxy compound in the presence of a condensation catalyst, such as hexahydro-2H-pyrimido[1,2-a]pyrimidine or an alkyl substituted derivative.

Abstract: A method is provided for making aromatic carbonates, such as diphenyl carbonate by the carbonylation of an aromatic hydroxy compound, such as phenol in the presence of a palladium catalyst and an organic cocatalyst, such as a terpyridine compound.

Abstract: A method is provided for making diphenyl carbonate by the direct carbonylation of phenol utilizing a palladium catalyst in combination with an inorganic cocatalyst in the form of a cobalt pentadentate complex.