Abstract:
Formulations and wipes for imparting a sporicide to a surface are disclosed herein. To achieve the sporicidal efficacy of the product, a synergistic amount of an amine oxide surfactant and a mixture of oxidants is incorporated into the formulation. The operative sporicidal formulation contains a solvent, an amine oxide surfactant, a water soluble oxidant and a water insoluble oxidant. Typically, the formulation can contain about 0.05 to about 3.7 percent (by weight of the formulation) of an amine oxide surfactant, about 0.5 to about 4 percent (by weight of the formulation) of a water soluble oxidant, and about 0.1 to about 6 percent (by weight of the formulation) of a water insoluble oxidant.
Abstract:
This invention discloses an immunochromatographic assay device to detect and quantify analytes. The device utilizes up-converting luminescent probes to detect time-resolved luminescence signals. Because the unconverting luminescent probes can have relatively long emission lifetime, background interference from sample autofluorescence and light scattering from excitation source can be easily eliminated through delayed luminescence detection. Furthermore, the up-converting luminescent probes can be excited by near Infrared (IR) or IR light sources. In comparing with UV and visible lights, the near IR and IR lights can penetrate deeper into sample matrices and more effectively excite the probes, but not the sample matrices, resulting in less background and higher detection sensitivity. A simple and low cost reader can be designed to measure the delayed up-converting luminescence of long lifetime that does not use expensive optical filters and mirrors.
Abstract:
A biodegradable, substantially continuous filament is provided. The filament contains a first component formed from at least one high melting polyester and a second component formed from at least one low melting polyester. The low melting point polyester is an aliphatic-aromatic copolyester formed by melt blending a polymer and an alcohol to initiate an alcoholysis reaction that results in a copolyester having one or more hydroxyalkyl or alkyl terminal groups. By selectively controlling the alcoholysis conditions (e.g., alcohol and copolymer concentrations, catalysts, temperature, etc.), a modified aliphatic-aromatic copolyester may be achieved that has a molecular weight lower than the starting aliphatic-aromatic polymer. Such lower molecular weight polymers also have the combination of a higher melt flow index and lower apparent viscosity, which is useful in the formation of substantially continuous filaments.
Abstract:
This invention describes a general magnetic binding assay method to detect the presence and quantity of analyte in a sample. The method uses magnetic particles for separating and concentrating analytes of interest from complex samples and use time-resolved up-converting fluorescence detection technique to provide highly sensitive detection without using expensive optical components such as band-pass filters. The method uses pulsed long wavelength light for excitation and time-delayed luminescence detection, resulting in little interferences from sample matrices. Furthermore, the usage of long wavelength excitation light requires simpler sample preparation and clean-up such as removal of red blood cells, which otherwise will significantly interfere with excitation efficiency of the fluorescence probes.
Abstract:
A biodegradable fiber that is formed from a thermoplastic composition that contains polylactic acid, a plasticizer, and a compatibilizer is provided. The compatibilizer includes a polymer that is modified with a polar compound that is compatible with the plasticizer and a non-polar component provided by the polymer backbone that is compatible with polylactic acid. Such functionalized polymers may thus stabilize each of the polymer phases and reduce plasticizer migration. By reducing the plasticizer migration, the composition may remain ductile and soft. Further, addition of the functionalized polymer may also promote improved bonding and initiate crystallization faster than conventional polylactic acid fibers. The polar compound includes an organic acid, an anhydride of an organic acid, an amide of an organic acid, or a combination thereof. Such compounds are believed to be more compatible with the generally acidic nature of the polylactic acid fibers.
Abstract:
A biodegradable fiber for use in forming a nonwoven web is provided. The fiber is formed from a thermoplastic composition comprising at least one polylactic acid in an amount from about 75 wt. % to about 99 wt. % and at least one polyether copolymer in an amount from about 1 wt. % to about 25 wt. %, wherein the polyether copolymer contains from about 40 mol. % to about 95 mol. % of a repeating unit (A) having the following formula. wherein, x is an integer from 1 to 250, the polyether copolymer further containing from about 5 mol. % to about 60 mol. % of a repeating unit (B) having the following formula. wherein, n is an integer from 3 to 20; and y is an integer from 1 to 150. Such polyether copolymers have been found to improve a variety of characteristics of the resulting thermoplastic composition, including its ability to be melt processed into fibers and webs, as well as its sensitivity to moisture.
Abstract:
A method for forming a fiber is provided. The method comprises supplying at least one aromatic polyester to a melt processing device and modifying the aromatic polyester with at least one polyether copolymer within the device to form a thermoplastic composition having a melt flow rate that is greater than the melt flow rate of the aromatic polyester. The polyether copolymer contains a repeating unit (A) having the following formula: C2H4Ox (A) wherein, x is an integer from 1 to 250, the polyether copolymer further containing a repeating unit (B) having the following formula: CnH2nOy (B) wherein, n is an integer from 3 to 20; and y is an integer from 1 to 150.
Abstract translation:提供了一种形成纤维的方法。 该方法包括向熔融加工装置供应至少一种芳族聚酯,并在装置内用至少一种聚醚共聚物改性芳族聚酯以形成熔体流动速率大于芳族聚酯的熔体流动速率的热塑性组合物 。 聚醚共聚物含有具有下式的重复单元(A):其中,x为1〜250的整数,聚醚共聚物还含有具有下式的重复单元(B): C n H 2n O(B)其中,n为3至20的整数; y为1〜150的整数。