摘要:
A system for collection of liquid phase sample fractions from a supercritical fluid chromatography system is disclosed. The system has different ways of gathering the liquid phase into a collection chamber and provides for automated removal of liquid phase from a collection chamber into separate collection container. A separate pressure scheme is invoked upon the collection chambers to move liquid phase out of a chamber and into the separate collection container. In addition, the invention provides a renewal system for the collection chambers where each chamber returns to an uncontaminated stated by washing with a cleaning solution after removal of collected liquid phase. Spent cleaner from a chamber is purged using the pressure system into a waste stream for disposal.
摘要:
The invention is a device and method in a high-pressure chromatography system, such as a supercritical fluid chromatography (SFC) system, that uses a pump as a pressure source for precision pumping of a compressible fluid. The preferred exemplary embodiment comprises a pressure regulation assembly installed downstream from a compressible fluid pump but prior to combining the compressible flow with a relatively incompressible modifier flow stream. The present invention allows the replacement of an high-grade SFC pump in the compressible fluid flow stream with an inexpensive and imprecise pump. The imprecise pump becomes capable of moving the compressible fluid flow stream in a precise flow rate and pattern. The assembly dampens the damaging effects of an imprecise pump, such as large pressure oscillations caused by flow ripples and noisy pressure signals that do not meet precise SFC pumping requirements.
摘要:
The invention is a device and method in a high-pressure chromatography system, such as a supercritical fluid chromatography (SFC) system, that uses a pump as a pressure source for precision pumping of a compressible fluid. The preferred exemplary embodiment comprises a pressure regulation assembly installed downstream from a compressible fluid pump but prior to combining the compressible flow with a relatively incompressible modifier flow stream. The present invention allows the replacement of an high-grade SFC pump in the compressible fluid flow stream with an inexpensive and imprecise pump. The imprecise pump becomes capable of moving the compressible fluid flow stream in a precise flow rate and pattern. The assembly dampens the damaging effects of an imprecise pump, such as large pressure oscillations caused by flow ripples and noisy pressure signals that do not meet precise SFC pumping requirements.
摘要:
A process and device for chromatography, such as preparative and analytical supercritical fluid chromatography, or supercritical fluid extraction for a liquid phase SFC collection system that separates and retains eluted components from sample injections. The process efficiently separates liquid and gas phases in the flow stream upstream of a collection vessel and without additional pressure schemes or solvent extractions imposed on the flowstream. Sample fractions are collected from sample component concentration peaks based upon the chromatographic elution of the sample components. Samples are repeatedly the injected into the mobile phase flow stream and collected into large volume collection containers, thereby allowing longer unattended run times and cost-efficient sample purification and recovery.
摘要:
A composition for topical application to the skin of a human being is disclosed which provides a barrier against irritation and painful damage due to contact with many otherwise harmful materials. The composition comprises in combination water, dimethicone, stearic acid, coconut fatty acid, isopropyl myristate, glycerin, triethanolamine, cetyl alcohol, polyvinyl pyrrolidone, cetearyl alcohol, ceteareth-20, tetrasodium EDTA, hydroxyethyl cellulose, aloe vera gel, vitamin E and lanolin.
摘要:
Improved compositions of benzoyl peroxide are prepared by at least partially dissolving benzoyl peroxide in diethylene glycol monoethyl ether to prepare a premixture which forms a flocculent composition of benzoyl peroxide when admixed with water or an aqueous medium. The improved benzoyl peroxide compositions have a small particle size compared with those prepared by conventional grinding techniques and the time and potential hazards associated with grinding are avoided. The small particle size of the benzoyl peroxide flocculents result in increased surface area of active ingredient on the skin for a given concentration of benzoyl peroxide. The flocculent compositions are used to prepare compositions for the topical treatment of acne or other dermatological disorders.
摘要:
A system for integrating multiple software modules configured to produce output according to established business rules is provided. The system in one embodiment coordinates the printing of a variety of labels and reports according to a set of complex business rules. Complex output tasks may be distributed to remote computers in a network for optimum efficiency. The system may be configured to comply with one or more standard database connectivity standards in order to provide a generic interface with foreign systems. The method in one embodiment includes acquiring an input, sending a query to a database, retrieving business rules and associated tasks, and building scripts or commands for each task. This Abstract is provided to comply with the rules, which require an abstract to quickly inform a searcher or other reader about the subject matter of the application. This Abstract is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.
摘要:
A personal care composition for topical application to the skin or hair comprising (a) a branched primary alcohol component, having from 8 to 36 carbon atoms and an average number of branches per molecule of from 0.7 to 3.0, said branching comprising methyl and ethyl branches, and said branched primary alcohol component optionally comprising up to 3 moles of alkylene oxide per mole of alcohol; (b) one or more sunscreens; and (c) a cosmetically-acceptable vehicle. The personal care compositions of the invention provide excellent sunscreen protection, stability, viscosity and rheology characteristics, together with emolliency, application and skin feel benefits.
摘要:
The invention relates to raspberry seed oil derivatives prepared by the reaction of dimethicone copolyol and cold pressed raspberry seed oil. The choice of cold pressed raspberry seed oil as a raw material in the preparation of the compounds is critical, since it has been found that the cold pressed raspberry seed oil contains antioxidants, antimicrobial compounds and which when reacted with a water soluble or water dispersible silicone result in products that deliver said actives to the skin and hair, resulting in protection of the skin and hair from environmental factors such as acid rain, ozone attack and UV degradation.
摘要:
The present invention relates to the cosmetic use of certain esters, prepared by the reaction of a Guerbet alcohol and lanolin. The result is a cosmetically elegant ester and lanolin alcohol which is a highly functional material in skin care. These compositions provide conditioning effects when applied to the hair and skin.