Abstract: An expandable polymeric styrene particle is provided from which molded foamed articles can be produced exhibiting reduced flammability characteristics. The expandable polymeric styrene particle contains a blowing agent, a minor amount of pentaerythritol tetrastearate and a minor amount of hexabromocyclododecane. The additives can be incorporated during impregnation with the blowing agent or by blending with the expandable particles after impregnation.

Abstract: Surface active compositions for dispersing oil slicks consisting essentially of specified proportions of a fatty acid sorbitan monoester, a polyalkyleneoxide adduct of a fatty acid sorbitan monoester, an aqueous solution of a dialkylsulfosuccinate salt, a glycol monoether and water and a method for dispersing an oil slick on water comprising applying a surface active composition of the above-described type to the surface of the oil slick.

Abstract: Block copolymers having a first sequence formed with a conjugated diene or a vinyl substituted aromatic hydrocarbon other than alpha-methylstyrene, a second sequence formed with an acrylic ester, and a linking intermediate sequence formed with alpha-methylstyrene. An anionic polymerization process is used to form these block copolymers.

Abstract: This invention is a freeze protection valve assembly for preventing the freezing of water in pipes of residential and the like water systems. The valve is positioned in a reservoir containing water of the water system. If the water temperature falls below a predetermined minimum, the valve opens discharging water from the system at the same time bringing into the system the warmer waters from the underground supply. Since the valve is activated by the temperature of the water itself, water waste is minimized.

Abstract: A composition and process for reducing the adhesion of expandable polystyrene beads impregnated with a blowing agent such as pentane. The composition comprises effective amounts of magnesium stearate and zinc stearate respectively. The composition is added to the polystyrene in an apparatus such as a tumble blender prior to pre-expansion of the impregnated polystyrene beads.

Abstract: A process for the production of styrene wherein ethylene oxide and benzene are added to a reactor at a temperature between about 600.degree. F. and about 825.degree. F. in the presence of an aluminosilicate type catalyst. The reaction proceeds directly to form styrene within the reactor.

Abstract: An improved expandable polymeric styrene particle is provided containing a blowing agent, a minor amount of pentaerythritol tetrastearate, overcoated with a minor amount of glyceryl monostearate. The improved particle results in a significantly reduced final mold cooling cycle in producing the finished molded article. Pentaerythritol tetrastearate is preferably incorporated during impregnation with the blowing agent and glyceryl monostearate overcoated by blending with the expandable particles after impregnation.

Abstract: An improved expandable polymeric styrene particle is provided containing a blowing agent, a minor amount of pentaerythritol tetrastearate, overcoated with a minor amount of glyceryl monostearate. The improved particle results in a significantly reduced final mold cooling cycle in producing the finished molded article. Pentaerythritol tetrastearate is preferably incorporated during impregnation with the blowing agent and glyceryl monostearate overcoated by blending with the expandable particles after impregnation.

Abstract: Aromatic hydrocarbons are separated from a mixture thereof with paraffinic hydrocarbons by solvent extraction with N-(2-hydroxyethyl)-2-pyrrolidone containing a minor amount of water at specified elevated temperatures and pressures. Temperature variations within the specified range have little effect on the loading capacity and selectivity of the solvent thus greatly simplifying process control.

Abstract: An expandable polymeric styrene particle is provided from which molded foamed articles can be produced exhibiting reduced flammability characteristics. The expandable polymeric styrene particle contains a blowing agent, a minor amount of bis(allyl ether) of tetrabromobisphenol A and a minor amount of dibromoethyldibromocyclohexane. The additives can be incorporated during impregnation with the blowing agent or by blending with the expandable particles after impregnation.

Abstract: In the continuous catalytic polymerization of isobutylene, the exothermic heat of reaction is removed by vaporizing unreacted hydrocarbons, compressing and condensing the vaporized hydrocarbons to yield a liquid condensate at a pressure and temperature higher than that in the reaction zone, reducing the pressure on the liquid condensate to reduce its temperature to that of the reaction zone, separating any vapors thus formed and recycling the liquid condensate to the reaction zone. The process provides an energy efficient means of controlling reaction zone temperature. The process can be employed when using either a fluidized or fixed bed catalytic system.

Abstract: An improved expandable polymeric styrene particle is provided containing a blowing agent and a minor amount of ethylene-bis-stearamide and dibromoethyldibromocyclohexane. The improved particle results in a significantly reduced final mold cooling cycle in producing the finished molded article. Ethylene-bis-stearamide and dibromoethyldibromocyclohexane can be incorporated during impregnation with the blowing agent or by blending with the expandable particles after impregnation.

Abstract: A state of relaxation or mental harmonization in a subject is created by exposing a color solely to one field of vision of a subject and the complement of that color solely to the other field of vision of the subject while simultaneously exposing an audible tone solely to one ear of the subject and a harmonious tone solely to the other ear of the subject. The color and tones employed are subjectively comfortable and compatible. Preferably, the frequency difference between the two audible tones is one-half the frequency of the audible tone having the lowest frequency.

Abstract: An expandable polymeric styrene particle is provided from which molded foamed articles can be produced exhibiting reduced flammability characteristics. The expandable polymeric styrene particle contains a blowing agent, a minor amount of bis(allyl ether) of tetrabromobisphenol A and a minor amount of pentabromomonochlorocyclohexane. The additives can be incorporated during impregnation with the blowing agent or by blending with the expandable particles after impregnation.

Abstract: An expandable polymeric styrene particle is provided from which molded foamed articles can be produced exhibiting reduced flammability characteristics. The expandable polymeric styrene particle contains a blowing agent, a minor amount of bis (allyl ether) of tetrabromobisphenol A and a minor amount of dibromoethyldibromocyclohexane. The additives can be incorporated during impregnation with the blowing agent or by blending with the expandable particles after impregnation.

Abstract: A grid-type face guard is attached to a football helmet by means of forehead spring clips and side spring clips. Forehead spring clips include means for preventing any downward movement of face guard in the event of a blow toward face guard. With this construction, the face guard will detach by a slight pull in any direction away from face guard yet not detach as a result of a blow toward the face guard. Injuries resulting from face masking are prevented.

Abstract: A method and apparatus for checking the calibration of analyzers employing radiant energy is disclosed. The invention embodies changing the radiant energy source color temperature by a precise increment and adjusting the span to reflect the predetermined amount of differential absorbance between reference and analytical interference filters which would result from said increment of change in source color temperature. The invention is particularly useful when employing radiant energy in the ultraviolet, visible and infrared spectra. The invention eliminates the need for standard liquid or gaseous calibration solutions or special optical calibration filters.