Abstract: Topical compositions for application to the stratum corneum include a polyester and an active ingredient which is a chemical exfoliating agent, sunless tanning agent, skin lightening agent and/or an insect repellent. The polyester substantially retains the active ingredient on or in the stratum corneum. A method for improving the effect of the active ingredient in a topical composition includes providing a polyester which functions to substantially retain the active ingredient on or in the stratum corneum to improve the effect of the active ingredient.

Abstract: Sunscreen formulations including functionalized polyesters and at least two organic active sunscreen ingredients are provided. One of the organic active ingredients is at least partially soluble in the other, and the organic active ingredients are compatible and co-soluble with the functionalized polyester. The functionalized polyesters are also included in sunscreen formulations as dispersing agents for inorganic active sunscreen ingredients.

Abstract: A dry sunscreen composition comprising effective amounts of octyl methoxycinnamate, octyl salicylate, homosalate, menthyl anthranilate, octocrylene, benzohenone-3, propylparaben, BHT, PVP/eicosene copolymer, octyldodecyl neopentanoate, C.sub.12-15 alcohols benzoate, titanium dioxide, and acrylates copolymer. A process for preparing a dry sunscreen composition that involves: combining effective amounts of octyl methoxycinnamate, octyl salicylate, homosalate, menthyl anthranilate, octocrylene, benzohenone-3, propylparaben, BHT, and PVP/eicosene copolymer to form a first section of ingredients; heating the first section of ingredients to a sufficient temperature with substantially constant mixing until it becomes clear and homogenous; combining effective amounts of C.sub.

Abstract: A dry sunscreen composition, including a highly crosslinked polymethacrylate copolymer powder combined with active sunscreen ingredients. The composition includes, by weight percent, about 7.50% octyl methoxycinnamate, 5.00% octyl salicylate 15.00% homosalate, 5.00% menthyl anthranilate, 10.00% octocrylene, 6.00% benzophenone-3, 0.05% propylparaben, 0.05% BHT, 4,49% PVP/eicosene copolymer, 5.75% C12-15 alcohols benzoate, 5.75% octyldodecyl neopentanoate, 10.00% titanium dioxode, 0.15% D&C yellow No. 5 aluminum lake, and 25.26% acrylates copolymer.

Abstract: An apparatus useful in investigating the wall surfaces of a structure defining a cavity comprising: a tool having a periphery and being capable of being at least partially located in the cavity; and a plurality of transducers located at different points on the periphery of the tool, each of the transducers being capable of sending first signals toward the wall surfaces of the cavity and receiving reflected second signals. An improved method for investigating the wall surfaces of a structure defining a cavity is also disclosed.

Abstract: An ultrasonic borehole televiewer is modified to provide a vertical array of receiving transducers arranged above and below a conventional transmit/receive transducer. The variation in amplitude of reflected energy detected across this array for each firing of the televiewer is a measure of the extent to which scattered energy is present in addition to specular reflections. This in turn is an index of the relative smoothness or roughness of the borehole surface on a scale comparable to or smaller than the wavelength of the incident energy.

Abstract: A glass optical fiber waveguide preform is prepared by chemical reaction of vapor ingredients within a bait tube. As the reactants flow through the bait tube, a hot zone traverses the tube to cause the deposition of soot in a section of the tube just downstream of the hot zone. An axially disposed heater, which is located just downstream from the hot zone in the vicinity of the soot deposit, is mechanically coupled to the burner which generates the hot zone. The heater enhances the thermophoresis effect, thereby increasing deposition rate and efficiency. Also, a gas may be flowed over the surface of the heater to confine the reactant vapors to an annular channel adjacent the bait tube wall and to prevent soot deposition on the heater. The heater may comprise an enlarged end portion to cause soot to flow toward the bait tube wall in the deposition region.

Abstract: A method of forming a preform or blank for an optical filament, the preform itself, and resulting optical filament is disclosed. A hollow cylindrical substrate is provided within which is disposed a burner having a substantially radial flame. Reactants are flowed into the hollow cylindrical substrate in the annular space between the inner surface of said substrate and the exterior of said burner. A hot zone is established within the interior of said substrate in the vicinity of said radial flame so that the reactants are reacted to produce a suspension of particulate material. The burner is traversed substantially along the longitudinal axis of the substrate whereby the hot zone is caused to move along the length of said substrate. A portion of the particulate material formed within the hot zone travels downstream where at least a portion thereof comes to rest on the inner surface of the substrate to subsequently form a continuous glassy deposit thereon.