6 results about "Bisphenol S" patented technology

This invention relates to the fields of environmental and bioanalytical technology, and particularly to a method for simultaneous pretreatment and detection of bisphenol S and bisphenol AF in biological tissues. The technical solution includes a framework process for simultaneous pretreatment and detection of bisphenol S and bisphenol AF in biological tissues. This invention establishes a dual-solvent secondary extraction system composed of n-hexane and methyl tert-butyl ether, achieving differentiated adaptation to different tissue matrices. By combining the advantages of non-polar and moderately polar solvents, it can simultaneously handle the relatively highly polar bisphenol S and the relatively non-polar bisphenol AF in a single extraction process. Furthermore, this method sets key physical parameters during the extraction process according to the histological characteristics of each organ. For heart and lung tissues, specific ultrasonic power is used to ensure thorough cell disruption; while for liver and spleen with high lipid content, different power and time are used to ensure the full release of lipid-bound target substances.

This invention discloses a method for synthesizing high-purity and high-stability trimellitic anhydride bisphenol S ester in the field of polymer monomer synthesis technology. The method includes: dissolving bisphenol S, a catalyst, and a composite stabilizer containing at least two components in an organic solvent under an inert atmosphere; slowly adding a trimellitic anhydride acyl chloride solution dropwise at low temperature; reacting with a stepwise temperature increase; and obtaining the product through precipitation, washing, and recrystallization. This invention optimizes the catalyst system and innovatively introduces a composite stabilizer with synergistic effects to protect the product in situ during the reaction. Combined with precisely controlled reaction and purification processes, it effectively suppresses side reactions and product decomposition. This method can stably prepare trimellitic anhydride bisphenol S ester with a purity of not less than 99% and excellent thermo-oxidative stability, solving the problems of low product purity and poor storage stability in existing technologies, and meeting the application requirements of high-end polymer materials.

The application discloses a biomarker for evaluating bisphenol S male reproductive toxicity and application thereof, and belongs to the technical field of biological medicine. The biomarker for evaluating bisphenol S male reproductive toxicity is screened out based on multi-omics integration and functional phenotype, and the biomarker comprises one or more of a Cyp2e1 gene, a Tdo2 gene and a Ugt1a1 gene. The expression amount of the above biomarker is detected by a detection reagent to evaluate the male reproductive toxicity of bisphenol S, and the detection reagent has high accuracy and specificity. A corresponding detection kit and a use method are developed, and the male reproductive toxicity of bisphenol S can be quickly and accurately evaluated.

This invention relates to the field of carbon fiber surface treatment and composite material technology, and discloses a sizing agent and a carbon fiber composite material and its preparation method. The disclosed sizing agent, by weight parts, comprises: 25-35 parts of a low-hydroxyl-type moisture-resistant epoxy resin, 8-15 parts of an epoxy-terminated acylhydrazone-PAI prepolymer, 15-25 parts of epoxy silane-modified lignin, 6-10 parts of phytosterol polyoxyethylene ether, 2-5 parts of a diamine-containing urea dynamic crosslinking agent, and 50-60 parts of water; the low-hydroxyl-type moisture-resistant epoxy resin is selected from at least one of bisphenol S epoxy resin and bisphenol F epoxy resin. The sizing agent emulsion provided by this invention has good stability, and the carbon fiber exhibits low moisture regain after sizing; its reinforced composite material has high shear strength retention, high impact strength recovery, and low water absorption under humid and hot environments, making it suitable for extreme humid and hot environments such as aerospace and marine engineering.

This invention belongs to the technical field of general physical or chemical methods or apparatus, specifically relating to separation, and more particularly to a decolorizing device for bisphenol S and its operating method. In this decolorizing device for bisphenol S, when the drive shaft rotates at a slow speed, the liquid enters the decolorizing mechanism and flows from the front to the back of the decolorizing component, completing the decolorization. When the drive shaft rotates at a faster speed, the decolorizing component moves away from the drive shaft, at which point the liquid enters the decolorizing mechanism and flows from the back to the front, completing the decolorization. The direction of liquid flow through the decolorizing component is opposite to the direction of movement of the activated carbon within the decolorizing component due to centrifugal force, thus preventing the activated carbon from breaking at higher drive shaft speeds and ensuring the decolorization effect.